From your gearbox BOM
Old Koyo marking
- Copy the marking exactly as it appears on the drawing or the bearing
- Keep any suffixes, even if they look unfamiliar
- Partial or worn marks are fine; add a photo
Koyo / JTEKT gearbox & drive shaft bearings
Every gearbox bearing reference in one clear purchasing list.
Machinery Company supplies Koyo and JTEKT bearings for gearboxes, drive shafts and general machinery. Send old Koyo marks or current JTEKT numbers by shaft position, and get one itemised quote for the whole assembly.
Koyo and JTEKT references
Old marks or current numbers
35
Bearing categories
Needle rollers to spherical rollers
Whole-unit quotes
Per unit and order total, line by line
Koyo marks and JTEKT numbers
Submit old Koyo marks and current JTEKT numbers side by side.
You don't have to convert anything first. Copy the Koyo marking from the gearbox BOM and the JTEKT number from your purchase records exactly as written. We match both to the same bearing before the quote goes out.
From your purchase records
Current JTEKT number
- Enter the JTEKT number next to the old Koyo mark on the same line
- Either reference alone is enough to start
- Any substitute is listed separately for your approval
Organised by shaft position
Quantity per unit and order total are quoted as separate columns.
One gearbox uses several bearings, so each line shows how many fit one unit and how many the whole order needs. Engineers can check the fit, and buyers can check the total, without anything being under- or over-ordered.
| Shaft position | Marking (Koyo / JTEKT) | Qty per unit | Units | Order total |
|---|---|---|---|---|
| Input shaft | Old Koyo mark | 2 | 4 | 8 |
| Intermediate shaft | JTEKT number | 2 | 4 | 8 |
| Output shaft | Koyo mark + JTEKT number | 1 | 4 | 4 |
| Needle roller position | Photo of worn marking | 1 | 4 | 4 |
Sample layout. Your quote follows your own shaft positions and quantities.
Bearing categories
Koyo bearings for every bearing position in the drivetrain.
Tapered rollers for combined loads, needle rollers for tight radial space, spherical rollers for heavy shafts. Browse by the position you need to fill.
01 Roller Bearings
99 models
Browse this category
02 Ball Bearings
83 models
Browse this category
03 Special Bearings
47 models
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04 Bearings by Industry
27 models
Browse this category
05 Automotive Bearings and Parts
6 models
Browse this category
06 Super-Precision Bearings
1 model
Browse this category
Featured Koyo / JTEKT bearings
Frequently quoted gearbox and drive shaft bearings.
187 Koyo and JTEKT models are listed online. Request a price on any of them on its own, or add it to your full gearbox list.
Tapered Roller Bearings
Koyo Tapered Roller Bearing 32910 30208 30209 31307 for Engineering Machinery
Tapered Roller Bearings
Koyo 33109 32210 30308 30211 Tapered Roller Bearing China Supplier
Tapered Roller Bearings
X&S 30205 Tapered Roller Bearing for Truck Spare Parts
Tapered Roller Bearings
Koyo 30206 30207 33205 30306 Tapered Roller Bearing Series Insert
Tapered Roller Bearings
Koyo C3 Tapered Roller Bearing 32211 30212 33010 33207 for Excavator Parts
Tapered Roller Bearings
X&S Tapered Roller Bearing 31306 30210 32910 32208 for Transmission
Tapered Roller Bearings
Koyo Tapered Roller Bearing 32009X 32010X 32011 32012 32013 for Motorcycle
Incomplete or worn markings
Send your drawing, even if the marking is unclear.
Attach a photo of the blurred marking and note what you haven't confirmed yet: the shaft position, a missing suffix, or the measured dimensions. We work from what you have, so an old bearing can be identified without guessing.
Target Industries
Koyo bearings for gearbox shops, machine builders and heavy industry.
Machinery Company supplies Koyo bearings for industrial gearbox and reducer builders, transmission repair workshops, assembly plants, cement plants running heavy conveyor gearboxes, agricultural parts dealers and planned maintenance projects.
01
Industrial Gearboxes & Reducers
Industrial gearboxes and speed reducers carry their input, intermediate and output shafts on tapered, cylindrical and spherical roller bearings. Each bearing position sees its…
02
Transmission Repair Shops
Transmission repair workshops replace input shaft, countershaft, differential and clutch release bearings during overhauls of vehicle and equipment transmissions. Old bearings often have worn…
03
Drive Shafts & Power Transmission
Drive shafts, line shafts and industrial power transmission units use ball, self-aligning and thrust bearings to support long rotating shafts between motors, couplings and…
04
Industrial Gears & Shafting
Industrial gear sets, spindles and shaft systems need bearings that hold shafts in an accurate position under gear mesh forces. Cylindrical roller bearings carry…
05
General Machinery & Equipment
General machinery such as fans, pumps, electric motors, textile machines and auxiliary drives relies mostly on deep groove ball bearings in standard and miniature…
06
Machinery Assembly
Machinery assembly plants fit many bearing types into one product, from forklift masts and construction equipment to custom assemblies built to drawing. A single…
Built for each reviewer
One quote that engineers, buyers and repair managers can all check.
Each line carries the information every reviewer needs: geometry for design, quantities for purchasing, shaft positions for overhaul.
Check geometry against the approved assembly spec
Every line names the exact Koyo or JTEKT designation, so you can check bore, outside diameter, width and execution against your drawing before release.
- Exact designation and specification confirmed per line
- Needle roller positions matched on full envelope, not bore alone
- No technical change without your approval
Separate prototype quantities from production runs
Quantity per unit and order total sit in separate columns, so trial builds and batch orders are priced clearly and totals reconcile with your build plan.
- Model, quantity, price and currency on every line
- Stock status, lead time and quote validity stated
- Shipping and tax terms set out for comparison
Identify bearings by shaft position for a full overhaul
The quote mirrors your gearbox, from input shaft to output shaft, so you can tick off the full overhaul list and keep the repair on schedule.
- Lines grouped by shaft position
- Worn or partial markings identified from photos
- Substitutes flagged separately, never assumed
Customer reviews
What gearbox buyers say about our Koyo supply.
Feedback from gearbox shops, plants and repair workshops on correct executions, careful identification and delivery.
5.0
Our gearbox rebuild shop has used Koyo tapered and cylindrical roller bearings for years. This supplier consistently delivers the correct JTEKT execution, and the bearing timken equivalent cross-reference they provided helped us avoid a substitution that would have failed in service.
4.9
We ordered a set of Koyo spherical roller bearings for a heavy conveyor gearbox at our cement plant. They arrived in good time, the load rating matched our calculation, and after nine months of continuous operation the bearing temperature reads normal. No surprises.
5.0
What stood out was how they handled an incomplete part number. We sent a blurry photo of a bearing that had been in service for years, and they came back with two possible Koyo references plus the dimensions to verify. That kind of support is hard to find.
FAQ
Common questions about Koyo / JTEKT bearing quotes
How should I submit old Koyo markings and current JTEKT numbers?
Put them on the same line, exactly as written. Use the old Koyo mark from your gearbox BOM and the JTEKT number from your purchase records. Either one alone is enough, and we match both to the same bearing before quoting.
Can you quote by quantity per unit and by order total at the same time?
Yes. Each line shows quantity per unit and order total in separate columns, grouped by shaft position. That way a full gearbox set is never under- or over-ordered, whether it's a prototype build or a production batch.
What if the bearing number is incomplete or worn?
Send a clear photo of the marking and note what is still unconfirmed. Add the shaft position, gearbox model and any measured dimensions you have. Any proposed substitute is listed separately and needs your approval.
Which product and shipping documents can you provide?
Tell us the destination country and which documents your customs and quality teams require, and we set them out in the quotation.
Selection guides
Bearing selection notes for gearboxes and drive shafts
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Send your gearbox BOM and get one itemised Koyo / JTEKT quote.
List the gearbox model, markings, shaft positions, quantity per unit and number of units. We reply with model, price, stock and lead time for each line.