Spherical Roller Bearing 
Koyo / JTEKT bearing supplier · Hong Kong
Koyo / JTEKT bearings, quoted only after the full suffix is confirmed.
Koyo Bearings: Source Factory Direct Sales supplies genuine Koyo ball, roller and needle bearings for gearboxes, drive shafts and machinery assemblies. Before we quote, we check base number, seal, clearance and configuration against your marking, so the bearing that arrives is the one your equipment specifies.
- Original packaging
- Available documents stated on each quote
- 2,995 Koyo models online
- Buyers worldwide
DWG-01 · List vs. reference
A shortened stock code is not a complete Koyo reference.
A shortened code tells you the size but not the seal, the clearance or the shaft position, and those are the details that cause wrong deliveries. Before quoting, we fill in each gap below. Any technical change goes on a separate line and needs your approval.
| On the maintenance list | Completed before we quote |
|---|---|
| Brand suffix missing | Full Koyo / JTEKT designation, from the equipment model, a clear marking photo or the original drawing |
| Simplified stock code | Original seal type and internal clearance, stated on the quote line |
| Drive end and non-drive end on one line | One line per bearing position, each with its own quantity |
| Floating and locating positions not separated | Which Koyo series fits each shaft, confirmed per position |
| Matched by dimensions only | The configuration your equipment specifies; any acceptable alternative listed separately for your sign-off |
Send Your Model List for a Suffix Check →
Can't read a reference? Send a photo and mark which items are still open.
DWG-02 · Shaft positions
Which bearing types sit on each gearbox shaft?
Input, intermediate and output shafts carry different loads, so each one usually takes different bearing types. Tap a shaft to see the types commonly found there. The exact Koyo series for your gearbox is confirmed from your list before we quote.
1Input shaft+
- Tapered roller bearings: combined radial and axial load from helical gears
- Cylindrical roller bearings: high radial load on gearbox shaft positions
- Deep groove ball bearings: lighter, general-purpose positions
2Intermediate shaft+
- Tapered roller bearings: paired arrangements carrying combined load
- Cylindrical roller bearings: floating positions with axial movement
- Needle roller bearings: compact positions with tight radial space
3Output shaft+
- Spherical roller bearings: heavy shafts and positions with misalignment
- Tapered roller bearings: combined load at the locating end
- Angular contact ball bearings: combined load where the design calls for it
Bearing types only. Positions vary by gearbox design, and your inquiry list decides the final reference.
DWG-03 · Bearing types
Koyo ball, roller and needle bearings by category
Koyo Bearings: Source Factory Direct Sales lists 2,995 Koyo models across 15 categories. Open a category to compare references, then send the full list for checking.
DWG-04 · Complete assembly
One inquiry covers bearings, adapter sleeves and housings.
You can put the whole assembly on one list. Housings and mounting components are quoted next to the bearings, so nothing gets left off a separate order and nobody finds a missing sleeve on shutdown day.
List each part as its own line
- 01Bearing: full Koyo / JTEKT reference and position on the shaft
- 02Adapter sleeve: model as marked, or note it as still to be confirmed
- 03Housing and mounting components: model and quantity per position
Gaps are flagged before you order
- 01We check whether the assembly on your list is complete before quoting
- 02Maintenance supervisors can check every part against the planned shutdown date
- 03Repeat orders keep the same line structure, so distributors can compare quantities easily
DWG-05 · Featured references
Featured Koyo bearings for gearbox and machinery repair
Start with a reference here, then send it to us. We confirm the suffix and configuration against your equipment before we give a price.
DWG-06 · Written quote
What a Koyo Bearings: Source Factory Direct Sales written quote states
Each written quote lists the confirmed reference, quantity, price and currency, stock status, estimated lead time, validity period and the shipping or tax terms that apply. It also says which product documents can actually be supplied, so procurement engineers can check everything before placing the order.
- ■Lead time is an estimate for each quote and depends on stock. It is not a blanket promise.
- ■Shipping method, dispatch timing and shipping documents are confirmed after you order
- ■Check labels, quantity and condition on arrival. If something is wrong, contact us with the order number and photos.
WRITTEN QUOTATION · SPECIMENKoyo Bearings: Source Factory Direct Sales
- 1Product referenceFull Koyo / JTEKT suffix
- 2QuantityPer line, per position
- 3Price & currencyUnit and line total
- 4Stock statusAs at the quote date
- 5Estimated lead timeStated per quote
- 6Quote validityValidity period shown
- 7Shipping & tax termsWhere applicable
- 8Available documentsWhat can actually be supplied
DWG-08 · Reference notes
Guides on Koyo suffixes, shaft positions and inquiries
Short articles for maintenance and purchasing teams on reading markings, listing positions and preparing a complete inquiry.
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Send your Koyo bearing list for a reference-checked quote
Send your list and we will check each reference, then reply with a written quote. Any line that needs confirming is flagged first.