Koyo / JTEKT bearings for gearboxes, drive shafts and general machinery
Target Industries · Machinery Company
Machinery Company supplies Koyo and JTEKT tapered, cylindrical, needle, ball and spherical roller bearings to gearbox builders, repair shops and machinery manufacturers. Start from your industry, then quote by part number, equipment model or assembly list.
Gearboxes & reducers
Build, repair and overhaul
Drive shafts & gear trains
Industrial transmission lines
Machine assemblies
Whole-unit bearing sets
Target Industries
Each industry page groups the Koyo / JTEKT bearing types used in that equipment, from needle roller bearings in tight radial spaces to spherical roller bearings on heavy shafts.
01 99 models Industrial gearboxes and speed reducers carry their input, intermediate and output shafts on tapered, cylindrical and spherical roller bearings. Each bearing position sees its…
Gearbox and Reducer Bearings · Tapered Roller Bearings · Cylindrical Roller Bearings · Spherical Roller Bearings
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02 79 models Transmission repair workshops replace input shaft, countershaft, differential and clutch release bearings during overhauls of vehicle and equipment transmissions. Old bearings often have worn…
Tapered Roller Bearings · Inch Size Bearings · Clutch Release Bearings · Automotive Bearings and Parts
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03 81 models 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…
Self-Aligning Ball Bearings · Deep Groove Ball Bearings · Sealed and Shielded Bearings · Thrust Ball Bearings
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04 33 models Industrial gear sets, spindles and shaft systems need bearings that hold shafts in an accurate position under gear mesh forces. Cylindrical roller bearings carry…
Cylindrical Roller Bearings · Angular Contact Ball Bearings · Thrust Ball Bearings · Super-Precision Bearings
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05 83 models General machinery such as fans, pumps, electric motors, textile machines and auxiliary drives relies mostly on deep groove ball bearings in standard and miniature…
Ball Bearings · Deep Groove Ball Bearings · Fan and HVAC Bearings · Textile Machinery Bearings
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06 87 models Machinery assembly plants fit many bearing types into one product, from forklift masts and construction equipment to custom assemblies built to drawing. A single…
Bearings by Industry · Deep Groove Ball Bearings · Forklift Bearings · Construction Machinery Bearings
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07 105 models Cement plants, mining sites and metal processing run heavy conveyor gearboxes, crushers, vibrating screens and mills with large spherical and roller bearings. These bearings…
Spherical Roller Bearings · Large Size Bearings · Mining and Vibrating Screen Bearings · Rolling Mill Bearings
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08 117 models Harvesters, tractors, balers and tillage equipment use tapered roller, sealed ball and self-aligning bearings in wheel hubs, gearboxes, rotors and disc gangs. Field conditions…
Agricultural Machinery Bearings · Tapered Roller Bearings · Sealed and Shielded Bearings · Self-Aligning Ball Bearings
View productsRepair or manufacture
Repair workshops identify bearings by shaft position and check them against the full overhaul list; equipment manufacturers check geometry against approved specifications and separate prototype quantities from production runs. Both are quoted from the same Koyo / JTEKT range.
| Checkpoint | Repair workshops | Equipment manufacturers |
|---|---|---|
| Typical buyer | Gearbox repair manager, transmission repair shop | Transmission design engineer, production buyer |
| How the bearing is identified | By shaft position: input, intermediate, output | By bearing geometry and the approved assembly specification |
| What gets checked | Every line against the complete overhaul list | Dimensions and execution against the approved drawing |
| Quantities | Per-unit quantity for each gearbox being rebuilt | Prototype quantity and batch production quantity on separate lines |
| References accepted | Old Koyo marks, current JTEKT numbers, photos of worn markings | Part numbers, drawing numbers, Koyo / JTEKT catalogue references |
Heavy-duty applications
For spherical and large roller bearings on heavily loaded shafts, the bearing position, existing marking and the load rating your design calls for are quoted together, so the supplied bearing matches your own calculation.
Gearbox model and shaft position: which shaft, which side, and how many bearings per position.
Required load rating: the value from your calculation or the approved specification, with radial and axial loads noted.
Existing Koyo / JTEKT marking: plus drawing number, so execution and cage details are confirmed before the quote.
Send the gearbox model, shaft position, existing marking and required load rating in one message, and the quote is matched to your own load calculation.
Planned replacement projects
Planned equipment replacement and maintenance projects are quoted as one itemised bearing list covering every machine, shaft position and quantity, instead of bearing-by-bearing orders that miss lines.
Group bearings by gearbox or machine model, then by input, intermediate and output shaft, so each line has a clear location.
Per-unit quantity and order total stay on separate columns, which removes the most common cause of under- or over-ordering.
Old Koyo marks and current JTEKT numbers can sit side by side. Where a marking is worn, attach a clear photo and note what still needs confirming.
Destination country, postcode and the shutdown date let the quote cover lead time, shipping method and the shipping documents the order needs.
Supporting services
Every request to Machinery Company includes part identification, an itemised whole-unit list, clearly marked substitutes and a product document check at quote stage.
Old Koyo marks matched to current JTEKT numbers; incomplete or worn markings checked from photos and dimensions.
The full bearing set for a gearbox or machine, quoted line by line with per-unit and total quantities.
Any alternative reference is listed on its own line, and no technical change goes ahead without buyer approval.
The product and shipping documents your order and customs clearance need are agreed in the written quote.
FAQ
Send both on the same line. List the Koyo marking from the bill of materials next to the JTEKT number from your purchasing records, with the shaft position. If a marking is incomplete, add a clear photo and note what still needs confirming.
Yes. Give the quantity per gearbox or machine and the number of units, and the quote shows both per-unit and order totals for each reference. Prototype and batch production quantities can be quoted on separate lines.
Yes. Application-specific bearings are supplied from drawings or equipment records. Send the equipment model, drawing number and the existing Koyo / JTEKT marking.
It is marked separately on the quote and is only supplied after you approve it. The original reference stays on the list, so you can compare both before ordering.
Request a quote
Tell Machinery Company the equipment, the Koyo / JTEKT references and the quantities. You get a written, itemised quote with stock status, lead time and validity.