- Bore d
- 25.4 mm
- Outside D
- 68.262 mm
- Width B
- 22.225 mm
- Dynamic C
- 63.7 kN
- Static C0
- 61.1 kN
- Limit speed
- 6000 r/min
- Mass
- 0.425 kg
Manufacturer catalogue
11455 PRODUCTS
KOYO
Search KOYO products by designation, product type and boundary dimensions. Technical values are organized for direct comparison.
Customer bearing search
Find a KOYO bearing
Search by designation, category or exact boundary dimensions.
Product families
KOYO bearing families
Start with an official product family, then refine by construction and technical attributes.
All bearing categories →- Bore d
- 28.575 mm
- Outside D
- 68.262 mm
- Width B
- 22.225 mm
- Dynamic C
- 63.7 kN
- Static C0
- 61.1 kN
- Limit speed
- 6000 r/min
- Mass
- 0.402 kg
- Bore d
- 31.75 mm
- Outside D
- 68.262 mm
- Width B
- 22.225 mm
- Dynamic C
- 63.7 kN
- Static C0
- 61.1 kN
- Limit speed
- 6000 r/min
- Mass
- 0.374 kg
- Bore d
- 31.75 mm
- Outside D
- 68.262 mm
- Width B
- 22.225 mm
- Dynamic C
- 63.7 kN
- Static C0
- 61.1 kN
- Limit speed
- 6000 r/min
- Mass
- 0.376 kg
- Bore d
- 28.575 mm
- Outside D
- 73.025 mm
- Width B
- 22.225 mm
- Dynamic C
- 68.8 kN
- Static C0
- 65.7 kN
- Limit speed
- 5500 r/min
- Mass
- 0.477 kg
- Bore d
- 31.75 mm
- Outside D
- 73.025 mm
- Width B
- 22.225 mm
- Dynamic C
- 68.8 kN
- Static C0
- 65.7 kN
- Limit speed
- 5600 r/min
- Mass
- 0.451 kg
- Bore d
- 31.75 mm
- Outside D
- 73.025 mm
- Width B
- 22.225 mm
- Dynamic C
- 68.8 kN
- Static C0
- 65.7 kN
- Limit speed
- 5500 r/min
- Mass
- 0.451 kg
- Bore d
- 34.925 mm
- Outside D
- 73.025 mm
- Width B
- 22.225 mm
- Dynamic C
- 68.8 kN
- Static C0
- 65.7 kN
- Limit speed
- 5500 r/min
- Mass
- 0.42 kg
- Bore d
- 34.925 mm
- Outside D
- 73.025 mm
- Width B
- 22.225 mm
- Dynamic C
- 68.8 kN
- Static C0
- 65.7 kN
- Limit speed
- 5500 r/min
- Mass
- 0.423 kg
- Bore d
- 15.875 mm
- Outside D
- 41.275 mm
- Width B
- 14.681 mm
- Dynamic C
- 27.3 kN
- Static C0
- 20.5 kN
- Limit speed
- 11000 r/min
- Mass
- 0.095 kg
- Bore d
- 30 mm
- Outside D
- 62 mm
- Width B
- 18 mm
- Mass
- 0.246 kg
- Bore d
- 32 mm
- Outside D
- 75 mm
- Width B
- 20 mm
- Mass
- 0.43 kg
- Bore d
- 32 mm
- Outside D
- 75 mm
- Width B
- 20 mm
- Mass
- 0.419 kg
- Bore d
- 20 mm
- Outside D
- 50.005 mm
- Width B
- 14.26 mm
- Dynamic C
- 33.3 kN
- Static C0
- 28.8 kN
- Limit speed
- 7900 r/min
- Mass
- 0.138 kg
- Bore d
- 25 mm
- Outside D
- 50.005 mm
- Width B
- 14.26 mm
- Dynamic C
- 33.3 kN
- Static C0
- 28.8 kN
- Limit speed
- 7900 r/min
- Mass
- 0.12 kg
- Bore d
- 24.981 mm
- Outside D
- 50.005 mm
- Width B
- 14.26 mm
- Dynamic C
- 33.3 kN
- Static C0
- 28.8 kN
- Limit speed
- 7900 r/min
- Mass
- 0.118 kg
- Bore d
- 25.4 mm
- Outside D
- 51.994 mm
- Width B
- 14.26 mm
- Dynamic C
- 33.3 kN
- Static C0
- 28.8 kN
- Limit speed
- 7900 r/min
- Mass
- 0.14 kg
- Bore d
- 25.4 mm
- Outside D
- 50.005 mm
- Width B
- 14.26 mm
- Dynamic C
- 33.3 kN
- Static C0
- 28.8 kN
- Limit speed
- 7900 r/min
- Mass
- 0.119 kg
- Bore d
- 25.4 mm
- Outside D
- 50.005 mm
- Width B
- 14.26 mm
- Dynamic C
- 33.3 kN
- Static C0
- 28.8 kN
- Limit speed
- 7900 r/min
- Mass
- 0.117 kg
- Bore d
- 31.75 mm
- Outside D
- 58.738 mm
- Width B
- 15.08 mm
- Dynamic C
- 37 kN
- Static C0
- 33.3 kN
- Limit speed
- 6600 r/min
- Mass
- 0.165 kg
- Bore d
- 15.875 mm
- Outside D
- 49.225 mm
- Width B
- 21.539 mm
- Dynamic C
- 47.2 kN
- Static C0
- 37.7 kN
- Limit speed
- 8900 r/min
- Mass
- 0.204 kg
- Bore d
- 19.05 mm
- Outside D
- 49.225 mm
- Width B
- 19.05 mm
- Dynamic C
- 47.2 kN
- Static C0
- 37.7 kN
- Limit speed
- 8900 r/min
- Mass
- 0.198 kg
- Bore d
- 19.05 mm
- Outside D
- 49.225 mm
- Width B
- 21.539 mm
- Dynamic C
- 47.2 kN
- Static C0
- 37.7 kN
- Limit speed
- 8900 r/min
- Mass
- 0.189 kg
- Bore d
- 500 mm
- Outside D
- 670 mm
- Width B
- 450 mm
- Dynamic C
- 9070 kN
- Static C0
- 22500 kN
- Mass
- 451 kg
Independent brand reference
Return to results ↑KOYO bearings: identification, catalogue & comparison
Koyo is a JTEKT bearing brand. JTEKT announced a brand unification in April 2022; its September 2026 packaging notice introduces the tagline Koyo, JTEKT Bearing Brand. Koyo and JTEKT references therefore need to be read in their publication and product context, not treated as unrelated bearing makers.
KOYO bearing types & model examples
Start with the bearing's construction, not just its diameter or brand. These source-backed examples connect a bearing type to actual KOYO designations and recorded dimensions. They are lookup starting points, not a recommendation for an unspecified machine or a complete current catalogue.
KOYO Ball bearings3 model examples
Ball bearings are a group of constructions, not one interchangeable design. Deep-groove, angular-contact and self-aligning bearings serve different arrangements; the exact type remains part of the lookup.
Before selecting a model
- Identify whether the arrangement uses deep-groove, angular-contact or self-aligning construction.
- Check the full marking, dimensions, closure and internal clearance on the individual record.
- Use the row count and mounting arrangement from the exact model; do not infer them from the word ball.
6205
Deep groove ball bearing
- Bore diameter (d)
- 25 mm
- Outside diameter (D)
- 52 mm
- Width (B)
- 15 mm
Source basis: JTEKT / Koyo published catalogue record. Captured 2026-09-02.
7205
Angular contact ball bearing
- Bore diameter (d)
- 25 mm
- Outside diameter (D)
- 52 mm
- Width (B)
- 15 mm
Source basis: JTEKT / Koyo published catalogue record. Captured 2026-09-02.
1205
Self-aligning ball bearing
- Bore diameter (d)
- 25 mm
- Outside diameter (D)
- 52 mm
- Width (B)
- 15 mm
Source basis: JTEKT / Koyo published catalogue record. Captured 2026-09-02.
Comparison boundary: The group name alone does not determine load direction, speed, accuracy or installation requirements. Preserve the full designation and suffix. Equal dimensions alone do not establish interchangeability; blank values remain unknown.
Explore bearing constructions →KOYO Deep groove ball bearings3 model examples
A versatile radial bearing family with some axial-load capability; single and double rows differ.
Before selecting a model
- Match envelope, load ratings, closure, clearance, cage, tolerance class and lubrication.
6205
Deep groove ball bearing
- Bore diameter (d)
- 25 mm
- Outside diameter (D)
- 52 mm
- Width (B)
- 15 mm
Source basis: JTEKT / Koyo published catalogue record. Captured 2026-09-02.
6305
Deep groove ball bearing
- Bore diameter (d)
- 25 mm
- Outside diameter (D)
- 62 mm
- Width (B)
- 17 mm
Source basis: JTEKT / Koyo published catalogue record. Captured 2026-09-02.
6005
Deep groove ball bearing
- Bore diameter (d)
- 25 mm
- Outside diameter (D)
- 47 mm
- Width (B)
- 12 mm
Source basis: JTEKT / Koyo published catalogue record. Captured 2026-09-02.
Comparison boundary: Open, shielded and sealed variants may share dimensions while closure, grease or clearance differs. Preserve the full designation and suffix. Equal dimensions alone do not establish interchangeability; blank values remain unknown.
Construction & selection guide →KOYO Roller bearings3 model examples
Roller-bearing searches include cylindrical, spherical, tapered and needle constructions. Start by identifying the roller geometry and whether the record describes a complete bearing or a component.
Before selecting a model
- Distinguish a tapered bore from tapered rollers: they describe different features.
- Check separable components, ring arrangement and the source dimension symbols.
- Verify the individual load direction, mounting and lubrication requirements before comparing models.
NU205R
Cylindrical roller bearing
- Bore diameter (d)
- 25 mm
- Outside diameter (D)
- 52 mm
- Width (B)
- 15 mm
Source basis: JTEKT / Koyo published catalogue record. Captured 2026-09-02.
22205RZ
Spherical roller bearing
- Bore diameter (d)
- 25 mm
- Outside diameter (D)
- 52 mm
- Width (B)
- 18 mm
Source basis: JTEKT / Koyo published catalogue record. Captured 2026-09-02.
30205JR
Tapered roller bearing
- Bore diameter (d)
- 25 mm
- Outside diameter (D)
- 52 mm
- Width (B)
- 15 mm
Source basis: JTEKT / Koyo published catalogue record. Captured 2026-09-02.
Comparison boundary: The group name alone does not determine load direction, speed, accuracy or installation requirements. Preserve the full designation and suffix. Equal dimensions alone do not establish interchangeability; blank values remain unknown.
Explore bearing constructions →KOYO Tapered roller bearings3 model examples
Cone and cup geometry determines the assembly; single-row bearings normally work in opposed arrangements.
Before selecting a model
- Check the complete cup-and-cone pairing, assembly width T, contact angle, endplay or preload and load direction.
30205JR
Tapered roller bearing
- Bore diameter (d)
- 25 mm
- Outside diameter (D)
- 52 mm
- Width (B)
- 15 mm
Source basis: JTEKT / Koyo published catalogue record. Captured 2026-09-02.
30305JR
Tapered roller bearing
- Bore diameter (d)
- 25 mm
- Outside diameter (D)
- 62 mm
- Width (B)
- 17 mm
Source basis: JTEKT / Koyo published catalogue record. Captured 2026-09-02.
30252
Tapered roller bearing
- Bore diameter (d)
- 260 mm
- Outside diameter (D)
- 480 mm
- Width (B)
- 80 mm
Source basis: JTEKT / Koyo published catalogue record. Captured 2026-09-02.
Comparison boundary: Cup and cone references, assembled width, contact geometry and setting must be checked as one arrangement. Preserve the full designation and suffix. Equal dimensions alone do not establish interchangeability; blank values remain unknown.
Construction & selection guide →Dimensions retain their source labels: B is not automatically the same as assembly width T, ring width C or section height H. A component with no inner ring may specify Fw rather than a shaft bore d. These examples do not supply installation fits, approval for a machine, or a promised load/speed capability.
What to identify first
This site's existing KOYO category and stored product identifiers are retained for continuity. Keep the brand shown on the source and the complete marking when comparing an older Koyo record with a newer JTEKT-branded document.
11,455 records currently loaded here. This is BearingScope's coverage, not the manufacturer's entire catalogue. A missing result means a data gap in this website, not that the manufacturer has never made the product.
Find the correct catalogue record
Read the Koyo/JTEKT bearing-number reference together with the exact product table. A renamed brand or packaging revision does not itself change the dimensions of a recorded model, but it also does not prove that two differently suffixed products are identical. Missing historical or supersession evidence remains a data gap.
Use the designation field above for the full marking, or enter bore d, outside diameter D and width B in mm. Leave unknown fields blank. A size chart can find candidates; it cannot establish material, precision or assembly compatibility by itself.
Read the KOYO designation in context
These are interpretation notes, not a universal suffix crosswalk. Preserve every unrecognised code for exact-model verification.
| Marking or field | Meaning and limits |
|---|---|
| ZZ / Z | In JTEKT's basic deep-groove designation reference, ZZ identifies fixed shields on both sides and Z on one side. |
| 2RS / RS | These identify contact-seal arrangements on both sides or one side in the applicable reference families. |
| 2RU / RU | These identify non-contact-seal arrangements on both sides or one side in the applicable reference families. |
| Scope | The closure code is only part of the specification. Retain clearance, precision, grease and special-design suffixes rather than replacing them with a generic 2RS description. |
Koyo packaging changes are not an authenticity test
The notice dated 14 September 2026 says new packaging will be introduced gradually and old and new designs may coexist. A different box alone cannot establish that a bearing is counterfeit or genuine. Keep the full product marking, lot information, packaging photographs and supply documentation for the manufacturer's authentication process.
Compare KOYO with another brand
- Start with the complete designation and supplied component or assembly.
- Compare d×D×B in the same units; for separable bearings include the correct component and assembled dimensions.
- Check closure, clearance, cage, precision, material and lubrication. A blank field remains unknown.
- Compare load and speed figures on the same basis, then check the application's mounting and operating requirements.
Equal boundary dimensions identify a candidate, not an approved replacement. BearingScope does not rank whole brands or certify fitment.
KOYO bearing lookup questions
Is this the official KOYO catalogue or a shop?
No. BearingScope is an independent lookup and comparison reference. It does not sell bearings, quote prices, certify authenticity or claim to contain the manufacturer's complete current range.
Can I search by inside and outside diameter?
Yes, where corresponding product data is loaded. Enter known dimensions in mm in the search controls above. Add width and family to narrow the result. Measure the loose bearing's boundary dimensions, not a housing's mounting-bolt spacing. Keep uncertain readings separate from exact measurements.
Does a catalogue number prove that the bearing is genuine?
No. A plausible marking or a matching database record does not authenticate a physical item. Retain the full marking, packaging and lot identification for the manufacturer's verification process; neither a photograph nor a country name alone settles authenticity.
Where was my KOYO bearing made?
The site does not have a verified factory/lot register. Brand identity and catalogue dimensions cannot establish an individual bearing's manufacturing origin. Check that item's traceability documentation; the missing origin is not filled from another model.
Can I download every KOYO PDF or CAD drawing here?
No. Public lookup records and explanatory guides are not a complete document library. A drawing must match the exact model and revision and be permitted for redistribution. Where no such file is provided, the document request remains a data gap.
What if the full suffix gives no result?
Check the lettering, separators and component identity first. You may use the base number to discover related records, but do not remove the suffix from the part you ultimately compare. Record the missing full designation through the site's data-feedback page.
Editorial reference reviewed 2026-10-01. Source basis: JTEKT — brand unification notice, April 2022; Koyo/JTEKT — bearing packaging notice, 14 September 2026; JTEKT Basic Bearing Knowledge — Bearing numbers, section 6-3. Original explanatory text; no catalogue prose, PDF or CAD is represented as a BearingScope manufacturer document.