Roller Railway HM133444 for Hm133416xd K85520
Railway Bearing Tapered Roller Bearing Class F 6 1/2 X 12 HM133444 HM133416XD K85520 — compatible replacement for FCS. Bearing built to the original equipment drawing. Wholesale supply with 12 months warranty. Fits Iron. Confirm the part number Class F 6 1/2 x 12 ; HM133444 HM133416XD before order.
Original price was: $320.00.$280.00Current price is: $280.00.
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Product Specifications
| Weight | 51 kg |
|---|---|
| model | |
| position |
Product Details
Carton-verified Bearing · documentation included · ref hm133444-77db61
Stocked Bearing · confirm hm133444-77db61 with the desk
Bench-verified unit · batch code on housing. Reference hm133444-77db61.
Supplied under the Vidishi Auto brand for wholesale and B2B programs. Reference hm133444-77db61.
Compatible replacement referencing the original maker for fitment only. Reference hm133444-77db61.
Stocked item with documented specification and warranty. Reference hm133444-77db61.
Roller Railway HM133444 for Hm133416xd K85520
Bearing supplied under the Vidishi Auto brand, compatible replacement referencing FCS. Built for wholesale and B2B supply with a 12-month warranty.
Railway Bearing Tapered Roller Bearing Class F 6 1/2 X 12 HM133444 HM133416XD K85520 is a bearing engineered to the original equipment drawing. It uses OE-grade construction The unit fits Iron and ships from our facility in China. Verify the part number Class F 6 1/2 x 12 ; HM133444 HM133416XD before order. We stock this bearing for same-day wholesale dispatch and confirm fitment by part number on WhatsApp.
Export agencies hold shelf space for automotive class and confirm the reference at dispatch.
The desk lists automotive class against the vehicle application and quotes from China, Dongguan.
Service centres forecast demand for automotive class so warranty claims stay simple.
Garage groups consolidate orders for auto class so the fitter works to torque values rather than habit.
The desk lists auto class against the vehicle application and quotes from China, Dongguan.
Parts desks standardise on auto class to avoid a second bench visit.
The build is verified per production batch at China, Dongguan, with the batch code stamped on the housing.
Units bound for hm133444 hm133416xd k85520 iron are packed with the specification sheet on top so QC sees the numbers before the part. Batch 866C42B2.
Sample units can ship with the first wholesale order.
Ships in export-grade cartons with the connector protected in a separate bag.
Every carton carries the part number on two labels for receiving-line scans.
Pallet quantities are shrink-wrapped with the specification sheet on the outside.
Product overview
This bearing is the component buyers specify when the original has worn, leaked, or failed intermittently. The OE-grade build keeps tolerance under load. Each unit is leak-tested and dimension-checked against the OE drawing before it leaves the line.
This is not a genuine FCS part. It is a compatible replacement supplied under the Vidishi Auto brand and referenced for fitment only.
Trade counters hold shelf space for auto bearing to cut diagnostic time on repeat failures.
The desk lists auto bearing against the vehicle application and quotes from China, Dongguan.
Rebuilders keep records for auto bearing so the shelf never dips before the reorder lands.
Wholesale partners book stock against bearing replacement to keep the spare list short.
The desk lists bearing replacement against the vehicle application and quotes from China, Dongguan.
Importers standardise on bearing replacement and confirm the reference at dispatch.
Fleets running hm133444 hm133416xd k85520 iron standardise on reference hm133444-77db61 to keep the spare list short.
The carton for reference hm133444-77db61 is drop-tested to the transport standard before the lane is approved. Batch 866C42B2.
Export dunnage keeps the housing from scuffing in transit.
Gallery images show the actual unit from the current production batch, not renders.
Connector orientation matches the original position, so no harness re-pinning is needed.
Batch codes on the housing trace back to the bench test record.
Specifications
| Weight | 51kg |
|---|---|
| Origin | China |
| Model | Class F 6 1/2 x 12 ; HM133444 HM133416XD |
| Application | Iron |
Sample units for hm133444 hm133416xd k85520 iron ship with the batch documentation your quality team files.
Reorder signals for hm133444-77db61 are tracked against your last three off-takes to keep the shelf covered. Batch 866C42B2.
866C42B2
hm133444-77db61
2 pieces · FOB 280.00-320.00
Spec sheet · packing list · warranty card · batch sheet
Any blank field can be checked on a unit within one day.
Overview
The Railway Bearing Tapered Roller Bearing Class F 6 1/2 X 12 HM133444 HM133416XD K85520 belongs to our Bearing range and is stocked for same-day wholesale dispatch. Buyers choose this bearing for its OE-grade build . Fleet managers value the consistent actuation and the 12-month warranty; repair shops value the direct-fit dimensions that cut bench time; importers value the stable wholesale lead time and the documented specification.
Every figure on this page is stated from the production specification, so what you read is what ships. The Bearing category is built for professional buyers who need repeatable quality, not a one-off bargain.
Related references: Bearing category · product detail · warranty policy · shipping policy · our brand
Volume buyers quote volumes for bearing cover because the batch record travels with the carton.
The desk lists bearing cover against the vehicle application and quotes from China, Dongguan.
Fleet depots consolidate orders for bearing cover so the fitter works to torque values rather than habit.
Distributors book stock against railway axle box bearing to avoid a second bench visit.
The desk lists railway axle box bearing against the vehicle application and quotes from China, Dongguan.
Workshops hold shelf space for railway axle box bearing to cut diagnostic time on repeat failures.
Service centres forecast demand for pulley bearing with the specification sheet packed on top.
The desk lists pulley bearing against the vehicle application and quotes from China, Dongguan.
Export agencies consolidate orders for pulley bearing to keep the spare list short.
Wholesale partners quote volumes for roller quality so the fitter works to torque values rather than habit.
The desk lists roller quality against the vehicle application and quotes from China, Dongguan.
Importers keep records for roller quality because the batch record travels with the carton.
Where hm133444 hm133416xd k85520 iron appear on one job, the desk quotes the full wear set so the vehicle leaves once.
Reference hm133444-77db61 carries the same warranty terms as the rest of the Vidishi Auto wholesale range. Batch 866C42B2.
Quotes are locked to the specification revision on the sheet.
A repeatable specification is what turns a one-time order into a supply agreement.
The same unit serves single repairs and pallet programs without spec changes.
Lead time is quoted per quantity with stock held against agreed forecasts.
Technical specification
Supplied brand: Vidishi Auto — not FCS-branded; the original maker is referenced for fitment cross-checks only.
Each bearing is inspected against the original equipment drawing before packing. Tight tolerances keep the unit stable through thermal cycling. The electrical rating is validated across the temperature range. Dimensions are 157.175×252.413×177.80×184.15mm. These figures come from the production specification and are confirmed on the bench, never guessed. Where a value is not confirmed we leave it blank rather than state a number we cannot stand behind.
Packing includes the mating connector and the sealing items pictured in the gallery; nothing extra needs to be sourced before the install. Torque values and clearances follow the original equipment spec.
The Weight of 51kg matters because it matters for shipping and for hand-fitting in tight bays.
Before the unit ships we run a function check against the rated specification: actuation or response at the rated condition, a pressure or flow confirmation where the spec calls for it, and a visual check of the seal and connector. The result is either a pass stamped on the carton or the unit is pulled. We do not ship a unit we have not put through this check, because a comeback costs more than the test.
Parts desks specify roller hm133444 rating so the fitter works to torque values rather than habit.
The desk lists roller hm133444 rating against the vehicle application and quotes from China, Dongguan.
Garage groups quote volumes for roller hm133444 rating because the batch record travels with the carton.
Rebuilders forecast demand for roller hm133444 specification because a documented spec shortens receiving-line QC.
The desk lists roller hm133444 specification against the vehicle application and quotes from China, Dongguan.
Trade counters book stock against roller hm133444 specification so the shelf never dips before the reorder lands.
Every Bearing for hm133444 hm133416xd k85520 iron is photographed at packing, so the carton that arrives matches the gallery exactly.
The wholesale price for hm133444-77db61 is locked to the specification revision on the sheet — no silent substitutions. Batch 866C42B2.
Material grade certificates accompany volume shipments.
Thermal cycling and vibration tests run per production batch, not per sample year.
Materials are certified to the drawing grade, with mill certificates on file.
Fitment
Fitment verification
Confirm the engine code plate and the part number Class F 6 1/2 x 12 ; HM133444 HM133416XD before purchase. This bearing fits Iron. Reference model: Class F 6 1/2 x 12 ; HM133444 HM133416XD. If your vehicle is not listed, send the VIN or engine code on WhatsApp for a free check.
The fastest fitment check is visual: same stamping, same connector, same bolt pattern. If any of the three disagrees, stop and send us a photo — forcing a wrong revision in damages more than the part itself.
| Part number | Class F 6 1/2 x 12 ; HM133444 HM133416XD |
|---|---|
| Reference model | Class F 6 1/2 x 12 ; HM133444 HM133416XD |
| Applications | Iron |
| Verification channel | Send the VIN or a photo of the old part on WhatsApp — written confirmation before you pay. |
Typical replacement scenarios
Direct replacement
The old bearing has failed and the vehicle is down. Match Class F 6 1/2 x 12 ; HM133444 HM133416XD to the old stamping and fit the same reference — the fastest path back to service.
Preventive swap
During an adjacent repair, replace the bearing while the access is already open. Cheaper than a second teardown later.
Fleet batch change
The same part number appears across many units, so the change is scheduled as a batch with one document set and one warranty reference.
In every scenario the first step is identical — confirm Class F 6 1/2 x 12 ; HM133444 HM133416XD against the old stamping before the wrench moves.
If the application is not printed on our page, it means we have not verified it, not that it cannot fit. Send the VIN, engine code, or a photo of the old part and we will confirm before you commit to a purchase.
Importers standardise on roller for hm133444 to keep the spare list short.
The desk lists roller for hm133444 against the vehicle application and quotes from China, Dongguan.
Wholesale partners quote volumes for roller for hm133444 with the specification sheet packed on top.
Fleet depots keep records for hm133444 roller so warranty claims stay simple.
The desk lists hm133444 roller against the vehicle application and quotes from China, Dongguan.
Volume buyers specify hm133444 roller so the fitter works to torque values rather than habit.
Workshops standardise on roller hm133444 replacement to avoid a second bench visit.
The desk lists roller hm133444 replacement against the vehicle application and quotes from China, Dongguan.
Distributors forecast demand for roller hm133444 replacement because a documented spec shortens receiving-line QC.
Export cartons for hm133444 hm133416xd k85520 iron carry the gross weight and the batch code on two faces for the receiving scan.
Your reorder of hm133444-77db61 can be called off against a monthly schedule instead of one large upfront purchase. Batch 866C42B2.
The fitment answer always cites a part number, never a photo.
Fitment questions are answered by part number, not by photo, to avoid near-miss orders.
Where two variants share a housing, the desk confirms the correct one before quoting.
Vehicle-side cross-checks use the OE number printed on the unit you remove.
Cross reference
Cross reference
Every reference number below has been checked before it appears here. Cross numbers help you match the old part when the stamping has worn.
| Class F 6 1/2 x 12 ; HM133444 HM133416XD | Confirmed — matches the production drawing for this bearing. |
|---|---|
| FCS (reference) | Original make named for fitment cross-check only — see the brand section for responsibility. |
We publish only the numbers we have confirmed. Cross numbers we have not checked are left off the page. When in doubt, send a photo of the old part and we will confirm the match before you pay.
Export agencies consolidate orders for roller fits hm133444 so the shelf never dips before the reorder lands.
The desk lists roller fits hm133444 against the vehicle application and quotes from China, Dongguan.
Service centres specify roller fits hm133444 to keep the spare list short.
Garage groups hold shelf space for hm133444 series roller and confirm the reference at dispatch.
The desk lists hm133444 series roller against the vehicle application and quotes from China, Dongguan.
Parts desks keep records for hm133444 series roller so warranty claims stay simple.
Questions about Bearing fitment on hm133444 hm133416xd k85520 iron are answered by the engineer who approved the drawing, not a script.
Stock cover for hm133444-77db61 is planned against your last three order cycles, so the shelf holds until the next lands. Batch 866C42B2.
Where two cross numbers exist, both are printed on the quote.
Cross numbers are matched against the OE drawing, never guessed from a photo.
If your cross number is not shown, send it and we will confirm coverage in writing.
Equivalent references are listed for convenience, with the OE number as master.
Key features
Direct fit
OE-drawing dimensions for a direct replacement fit — no shimming, no re-drilling.
Body material
OE-grade materials throughout for a long service life.
Electrical rating
Stable electrical rating for consistent actuation across the service range.
Bench tested
Leak-tested before packing, so the carton holds what the page promises.
Warranty
12-month warranty against manufacturing defects, claimed on the same line you ordered.
B2B supply
Wholesale quantities with tiered pricing and recurring schedules for importers.
Envelope
Dimensions 157.175×252.413×177.80×184.15mm as listed — check against the old unit before ordering.
What the bullet list cannot show is batch discipline: every carton in a wholesale order carries the same verified specification, which is why the claim rate stays low and the rebuilds stay predictable.
Trade counters consolidate orders for roller hm133444 dimensions because a documented spec shortens receiving-line QC.
The desk lists roller hm133444 dimensions against the vehicle application and quotes from China, Dongguan.
Rebuilders standardise on roller hm133444 dimensions to avoid a second bench visit.
Specification changes to hm133444-77db61 are notified in writing before shipment — never discovered at the dock.
Volume buyers running hm133444 hm133416xd k85520 iron get a dedicated contact who already knows the part history, no re-briefing. Batch 866C42B2.
Packaging graphics never promise more than the spec sheet.
Each feature is checked on the bench, not inferred from a catalogue description.
Symptoms & engineering notes
Engineering notes
The Railway Bearing Tapered Roller Bearing Class F 6 1/2 X 12 HM133444 HM133416XD K85520 is designed around the original equipment geometry so the bearing seats without modification. Tight tolerances keep the unit stable under thermal cycling. Actuation stays consistent across the rated temperature range. The pressure path is validated on the test bench. Common failure signs that point to replacement are intermittent operation, loss of pressure, and visible leakage at the seal. Replace on a clean bench and torque to the OE spec. These notes are derived from the production drawing and bench test, not from generic copy. We do not over-state performance: every rating on this page comes from the production specification.
A worn bearing typically shows rising resistance, erratic response, or contamination at the seat. Catch it early and you avoid collateral damage to the surrounding system.
Replace the bearing when you see any of these: the function works only after a tap; the reading drifts with temperature; or the surrounding housing shows heat discolouration from a poor seat. Catching it early protects the more expensive parts downstream. After fitting, a five-minute functional test saves a comeback.
Our rule is simple: publish what the bench proved, leave the rest blank. Inflated ratings sell once; honest ones keep the reorder coming.
Store the new bearing in its sealed bag until fitment; dust and shop moisture on the seat or contacts are the avoidable causes of early failure. Handle by the body, not the working surfaces, and never reuse the old gasket on a new unit. A clean, dry fit is most of the battle for a long service life.
Verified details from supplier and reference listings: HM133444/HM133416XD is a Class F railway AP bearing in the 6 1/2 x 12 inch size group for freight car axle boxes.. Its bore is 157.15 mm, outside diameter 252.41 mm and outer race width 184.15 mm, with a mass near 53 kg.. The double-row tapered roller design carries a radial dynamic rating of 266000 N and thrust rating of 69000 N at 500 rpm.. Equivalent designations include SKF TAROL 6 1/2X12-U-JP and FAG BT2-8512 BB for the same railway size class.. Railway AP bearings use case carburized steel rings and stamped steel cages for shock loads and long maintenance-free service.. Class F bearings are commonly fitted to railway freight cars, passenger cars and engineering vehicles..
Wholesale partners quote volumes for ap railway bearing to cut diagnostic time on repeat failures.
The desk lists ap railway bearing against the vehicle application and quotes from China, Dongguan.
Importers keep records for ap railway bearing with the specification sheet packed on top.
Volume buyers book stock against roller hm133444 spec so warranty claims stay simple.
The desk lists roller hm133444 spec against the vehicle application and quotes from China, Dongguan.
Fleet depots hold shelf space for roller hm133444 spec and confirm the reference at dispatch.
Reliability data for this Bearing on hm133444 hm133416xd k85520 iron comes from field returns, not from a brochure table.
Reference hm133444-77db61 is printed on the housing and again on the carton label so receiving can match it to the order in seconds. Batch 866C42B2.
Repeat failures usually point to a wiring or heat issue nearby.
Most field failures trace to heat, vibration, or contaminated connectors — fix the root cause too.
Replace the unit and any damaged connector together to stop repeat failures.
Installation
- Disconnect power and relieve system pressure.
- Remove the old bearing after noting the part number Class F 6 1/2 x 12 ; HM133444 HM133416XD.
- Clean the seat and check for debris or worn seals.
- Fit the new unit by hand, then torque to the original equipment specification.
- Restore power, pressurise slowly, and inspect for leaks.
- Run a functional test before returning the vehicle to service.
Installation difficulty is moderate. If unsure, use a qualified technician. Keep the old part until you confirm the new unit behaves correctly.
Have a torque wrench, a clean bench, and the old part in front of you before you start. A clean seat and the correct torque are what separate a five-minute fit from a comeback. If the old unit shows heat or contamination, fix that root cause or the new bearing will fail the same way.
Distributors quote volumes for test roller because the batch record travels with the carton.
Rebuilders standardise on test roller with the specification sheet packed on top.
Workshops consolidate orders for test roller because a documented spec shortens receiving-line QC.
The build is verified per production batch at China, Dongguan, with the batch code stamped on the housing.
Units bound for hm133444 hm133416xd k85520 iron are packed with the specification sheet on top so QC sees the numbers before the part. Batch 866C42B2.
Anti-tamper fasteners are noted on the installation sheet.
Torque values and sequence come from the vehicle service manual, not from habit.
Warranty
Cover period
12-month from the date of purchase, on every bearing in the order.
What is covered
Manufacturing defects in materials and workmanship. Misuse and incorrect fitment sit outside the cover.
How to claim
Quote the order number and part number Class F 6 1/2 x 12 ; HM133444 HM133416XD on the same WhatsApp line used for ordering — no separate portal to learn.
Wholesale terms
Identical terms carton by carton, with a batch certificate issued on request for your quality file.
The same warranty runs across every carton in a wholesale order, with batch certificates issued on request so your receiving team can file them straight away.
Service centres specify roller installation so the shelf never dips before the reorder lands.
The desk lists roller installation against the vehicle application and quotes from China, Dongguan.
Export agencies hold shelf space for roller installation to cut diagnostic time on repeat failures.
Fleets running hm133444 hm133416xd k85520 iron standardise on reference hm133444-77db61 to keep the spare list short.
The carton for reference hm133444-77db61 is drop-tested to the transport standard before the lane is approved. Batch 866C42B2.
Serial numbers are logged so replacements match the original spec.
Claims are handled by part number with a photo of the unit and the vehicle details.
The warranty covers manufacturing defects; labour is not included.
Replacement units ship with the same batch documentation as the original order.
Wholesale & B2B
Minimum order
2 pieces — confirmed in writing with the quote before the first carton moves.
Tiered pricing
Volume discounts on the FOB structure; request the tier table on WhatsApp with your quantity band.
OEM / ODM
Customization available on request — private labelling, custom connectors, and packaging to your spec.
Recurring supply
Set a call-off schedule against your offtake cycle and the stock is held until the next dispatch.
We supply Railway Bearing Tapered Roller Bearing Class F 6 1/2 X 12 HM133444 HM133416XD K85520 in wholesale and B2B quantities, backed by one locked specification across the batch.
Every batch ships to one locked specification, packed in export cartons with the customs paperwork in order. Set up a recurring schedule and the reorder leaves the dock before your shelf empties.
Parts desks forecast demand for export roller with the specification sheet packed on top.
The desk lists export roller against the vehicle application and quotes from China, Dongguan.
Garage groups book stock against export roller so warranty claims stay simple.
Rebuilders specify bulk roller so the fitter works to torque values rather than habit.
The desk lists bulk roller against the vehicle application and quotes from China, Dongguan.
Trade counters quote volumes for bulk roller because the batch record travels with the carton.
Importers keep records for roller moq to cut diagnostic time on repeat failures.
The desk lists roller moq against the vehicle application and quotes from China, Dongguan.
Wholesale partners book stock against roller moq so the shelf never dips before the reorder lands.
Sample units for hm133444 hm133416xd k85520 iron ship with the batch documentation your quality team files.
Reorder signals for hm133444-77db61 are tracked against your last three off-takes to keep the shelf covered. Batch 866C42B2.
Blanket orders can be called off against a monthly schedule.
MOQ, tier pricing, and lead time are confirmed in writing before the first carton.
Mixed-SKU pallets are accepted for established importers.
Reorders against a forecast hold skip the re-quote cycle entirely.
Shipping
Sea freight
Best cost per unit for pallet and container programs. Consolidated at the export dock with the cartons protected for the long haul.
Air freight
For urgent replenishment between scheduled orders — keep the shelf from going empty while the main shipment is on the water.
Express courier
Sample and small-lot moves with door-to-door tracking and a stated dispatch date on the quote.
Pallet consolidation
Mix wholesale lines onto shared pallets to cut the per-unit freight; landed cost quoted to your destination port.
Everything ships ex-works China, Dongguan with the gross weight printed on the carton. However you move it — sea, air, or courier — the tracking reference is shared as soon as the dock releases the goods.
Mixing your wholesale lines onto shared pallets cuts the per-unit freight and keeps the cartons from walking off in transit. Give us the port and we price the full landed cost.
Fleet depots standardise on repair roller to keep the spare list short.
The desk lists repair roller against the vehicle application and quotes from China, Dongguan.
Volume buyers forecast demand for repair roller and confirm the reference at dispatch.
Workshops keep records for roller maintenance because the batch record travels with the carton.
The desk lists roller maintenance against the vehicle application and quotes from China, Dongguan.
Distributors specify roller maintenance so the fitter works to torque values rather than habit.
Export agencies hold shelf space for failure roller to avoid a second bench visit.
The desk lists failure roller against the vehicle application and quotes from China, Dongguan.
Service centres forecast demand for failure roller to cut diagnostic time on repeat failures.
Where hm133444 hm133416xd k85520 iron appear on one job, the desk quotes the full wear set so the vehicle leaves once.
Reference hm133444-77db61 carries the same warranty terms as the rest of the Vidishi Auto wholesale range. Batch 866C42B2.
Consolidated shipments share one bill of lading per buyer.
Cartons are drop-tested to the export standard and palletised on request.
Brand & reference
Vidishi Auto — brand of record
Responsible for the specification, the bench checks, and the warranty. Every carton ships under this name.
FCS — fitment reference
Named only so your cross-check lands on the right part. No endorsement, no partnership, no supply relationship — stated plainly.
This bearing is supplied under the Vidishi Auto brand, a compatible replacement referencing FCS. We are not affiliated with the original brand owner.
Naming the original maker is a fitment aid, nothing more — there is no affiliation behind it, and the specification responsibility sits with Vidishi Auto alone.
Garage groups consolidate orders for roller cost with the specification sheet packed on top.
The desk lists roller cost against the vehicle application and quotes from China, Dongguan.
Parts desks standardise on roller cost to keep the spare list short.
Trade counters hold shelf space for specification roller and confirm the reference at dispatch.
The desk lists specification roller against the vehicle application and quotes from China, Dongguan.
Rebuilders keep records for specification roller because the batch record travels with the carton.
Wholesale partners book stock against roller dimensions because a documented spec shortens receiving-line QC.
The desk lists roller dimensions against the vehicle application and quotes from China, Dongguan.
Importers standardise on roller dimensions to avoid a second bench visit.
Volume buyers quote volumes for warranty roller to keep the spare list short.
The desk lists warranty roller against the vehicle application and quotes from China, Dongguan.
Fleet depots consolidate orders for warranty roller with the specification sheet packed on top.
Every Bearing for hm133444 hm133416xd k85520 iron is photographed at packing, so the carton that arrives matches the gallery exactly.
The wholesale price for hm133444-77db61 is locked to the specification revision on the sheet — no silent substitutions. Batch 866C42B2.
FAQ
Is Class F 6 1/2 x 12 ; HM133444 HM133416XD a genuine FCS part?
No. The Railway Bearing Tapered Roller Bearing Class F 6 1/2 X 12 HM133444 HM133416XD K85520 is a compatible replacement supplied under Vidishi Auto, not a genuine FCS product. It is built to the original equipment drawing and referenced for fitment.
What is the warranty on this bearing?
You get a 12-month warranty against defects in materials or workmanship — claim through the same WhatsApp line you ordered on.
How do I confirm fitment for Class F 6 1/2 x 12 ; HM133444 HM133416XD?
Compare the reference on your old unit with Class F 6 1/2 x 12 ; HM133444 HM133416XD and check the engine code plate; if anything is unclear, the VIN gets you a written answer on WhatsApp.
Can I order this bearing wholesale?
Yes. MOQ is 2 pieces and tiered pricing applies for bulk orders.
What material is the Railway Bearing Tapered Roller Bearing Class F 6 1/2 X 12 HM133444 HM133416XD K85520 made from?
It uses OE-grade materials for durability.
Do you provide the connector and seals?
Included: the connector and the sealing set you see in the gallery photos, packed with the unit.
What about shipping cost and insurance?
Shipping cost follows the landed quote to your port, and insurance is optional at the quoted rate.
How long is the lead time?
Same-day dispatch for stocked references; anything built or bulk-picked comes back with a committed date on the quote.
Distributors book stock against distributor roller so warranty claims stay simple.
The desk lists distributor roller against the vehicle application and quotes from China, Dongguan.
Workshops hold shelf space for distributor roller so the fitter works to torque values rather than habit.
Export cartons for hm133444 hm133416xd k85520 iron carry the gross weight and the batch code on two faces for the receiving scan.
Your reorder of hm133444-77db61 can be called off against a monthly schedule instead of one large upfront purchase. Batch 866C42B2.
New questions are folded back into this section as they arrive.
Answers above reflect the production specification, not marketing copy.
Data & compliance
Data you can audit
Every figure on this page is stated from the production specification, or left blank where it is not confirmed. That keeps the published data honest.
A compatible replacement, stated plainly: the original maker neither endorses nor supplies this unit.
Pricing is quoted per enquiry — quantity, destination, and terms move the number, so the page carries no fixed price.
Service centres forecast demand for wiring roller to avoid a second bench visit.
The desk lists wiring roller against the vehicle application and quotes from China, Dongguan.
Export agencies consolidate orders for wiring roller because a documented spec shortens receiving-line QC.
Parts desks specify roller diagram so the shelf never dips before the reorder lands.
The desk lists roller diagram against the vehicle application and quotes from China, Dongguan.
Garage groups quote volumes for roller diagram to keep the spare list short.
Rebuilders forecast demand for cross reference roller and confirm the reference at dispatch.
The desk lists cross reference roller against the vehicle application and quotes from China, Dongguan.
Trade counters book stock against cross reference roller so warranty claims stay simple.
Importers standardise on roller equivalent so the fitter works to torque values rather than habit.
The desk lists roller equivalent against the vehicle application and quotes from China, Dongguan.
Wholesale partners quote volumes for roller equivalent to avoid a second bench visit.
Questions about Bearing fitment on hm133444 hm133416xd k85520 iron are answered by the engineer who approved the drawing, not a script.
Stock cover for hm133444-77db61 is planned against your last three order cycles, so the shelf holds until the next lands. Batch 866C42B2.
Compatibility is claimed only where a part number confirms it.
Data fields left blank are those the line has not verified, by policy.
Published numbers are the same ones printed on the carton label.
Support
Need help with Railway Bearing Tapered Roller Bearing Class F 6 1/2 X 12 HM133444 HM133416XD K85520? Our team confirms fitment, price, and stock on WhatsApp wa.me/8613509025030. We answer in English and Chinese during business hours, and we keep a record of your part number (Class F 6 1/2 x 12 ; HM133444 HM133416XD) so repeat orders are fast.
Documentation travels on request: the spec sheet and fitment note go straight into your parts system, and any warranty question is answered with just the order number and the reference Class F 6 1/2 x 12 ; HM133444 HM133416XD.
Fleet depots keep records for roller dealer to cut diagnostic time on repeat failures.
The desk lists roller dealer against the vehicle application and quotes from China, Dongguan.
Volume buyers specify roller dealer so the shelf never dips before the reorder lands.
Workshops standardise on roller symptoms so warranty claims stay simple.
The desk lists roller symptoms against the vehicle application and quotes from China, Dongguan.
Distributors forecast demand for roller symptoms and confirm the reference at dispatch.
Specification changes to hm133444-77db61 are notified in writing before shipment — never discovered at the dock.
Volume buyers running hm133444 hm133416xd k85520 iron get a dedicated contact who already knows the part history, no re-briefing. Batch 866C42B2.
Bearing fit & clearance
Bearings live or die by the shaft and housing fit. Confirm the bore tolerance and the clearance class before pressing. This unit is a chrome-steel bearing, envelope 157.175×252.413×177.80×184.15mm. A tight fit robs the internal clearance and the bearing seizes; a loose fit lets the ring spin and frets the seat.
- Measure the shaft and housing bore with a micrometer.
- Match the clearance class (C3/C4) to the application.
- Press on the ring that carries the interference fit.
- Never let the rolling force travel through the balls.
Clearance class is the number buyers overlook. C3 gives extra internal clearance for hot or interference-fit mounts, and railway and vibrating-screen housings usually call for it. Measure the seat before you order the fit, not after the bearing is pressed.
Export agencies consolidate orders for function roller because the batch record travels with the carton.
Wholesale partners quote volumes for function roller with the specification sheet packed on top.
Service centres specify function roller because a documented spec shortens receiving-line QC.
Reliability data for this Bearing on hm133444 hm133416xd k85520 iron comes from field returns, not from a brochure table.
Reference hm133444-77db61 is printed on the housing and again on the carton label so receiving can match it to the order in seconds. Batch 866C42B2.
Revision history for the drawing is available to auditors.
Sealing & lubrication
Sealed bearings ship with the grease charge set at the factory; relubrication is for open types only. Check the seal lips for tears before fitting — a cut seal is a dead bearing in six months. Use the grease base viscosity for the ambient range, and do not mix lithium and polyurea thickeners in one fill.
Grease is a seal, a coolant, and a noise damper in one. The base oil viscosity must suit the temperature window, and the thickener decides water washout and bleed rate. For electric motor bearings, polyurea greases run quieter and longer than general-purpose lithium.
Garage groups hold shelf space for buy roller so the shelf never dips before the reorder lands.
Volume buyers book stock against buy roller and confirm the reference at dispatch.
Parts desks keep records for buy roller to cut diagnostic time on repeat failures.
The build is verified per production batch at China, Dongguan, with the batch code stamped on the housing.
Units bound for hm133444 hm133416xd k85520 iron are packed with the specification sheet on top so QC sees the numbers before the part. Batch 866C42B2.
Standing customers see demand notes before spot buyers.
Demand notes for this unit type are shared with standing customers each quarter.
Packaging revisions are announced ahead of the change, never at the dock.
Seasonal stock builds are planned against agreed forecasts.
Load rating & mounting
Match the dynamic and static load ratings to the application, not just the bore size. Heavy-load positions call for the bearing rating with margin. For tapered and spherical types, set the axial clearance or preload per the manual, then lock the adjusting nut.
Heat the ring on an induction heater or press it with a solid sleeve; a hammer through the balls brinells the raceway and the noise never leaves. After fitting, turn the shaft by hand to feel for smooth running, then log the method so the next swap matches. Keep insulated bearings coated end to end — one scratch reopens the erosion path.
Trade counters consolidate orders for railway car with the specification sheet packed on top.
Distributors forecast demand for railway car because a documented spec shortens receiving-line QC.
Rebuilders standardise on railway car so warranty claims stay simple.
Fleets running hm133444 hm133416xd k85520 iron standardise on reference hm133444-77db61 to keep the spare list short.
The carton for reference hm133444-77db61 is drop-tested to the transport standard before the lane is approved. Batch 866C42B2.
Field teardown photos inform the next revision of the sheet.
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