Timken to FULI Bearing Cross Reference: Ball, Tapered Roller and Housed Units

This chart lists Timken and Fafnir numbers for 6000, 6200 and 6300 series deep groove ball bearings and UC housed units next to the FULI number with the same boundary dimensions. Timken writes shields as -ZZ, seals as -2RS and clearance as -C3. A second table covers 18 metric tapered roller bearings, from 30205 to 32212, with the SKF, NSK, NTN, Koyo and FAG numbers for each size.

How Timken and Fafnir suffixes map to FULI

Timken / Fafnir	Meaning	FULI
-ZZ (6205-ZZ)	Shields on both sides	ZZ
-2RS (6205-2RS)	Contact seals on both sides	2RS
-C3 (6205-2RS-C3)	Radial clearance larger than normal	C3 (on request)
-2RZ	Non-contact seals on both sides	Not in FULI catalog; send the number and we will reply
Fafnir K	Conrad (deep groove) type, open	Open
Fafnir KDD	K type with two shields	ZZ
Fafnir PP	Two seals	2RS
Fafnir 9100 / 200 / 300	Series that match 6000 / 6200 / 6300	Same series

Timken does not use 2Z

Timken deep groove ball bearings use -ZZ for two shields, not the 2Z that SKF uses. The open 6200 is listed in the Timken catalog as 6200-C0. The shielded C3 versions of 6308 and 6310 are written 6308-ZZC3 and 6310-ZZC3, with no hyphen before C3.

Reading Fafnir numbers

A Fafnir number is series + size + type. 205KDD is the 200 series, size 05, K type with two shields: the same size as 6205ZZ. 9105PP is the 9100 series, size 05, with two seals: the same size as 6005-2RS. The rules come from Timken ball bearing catalog 10734 and the Timken interchange guide 7536.

Timken to FULI cross reference chart: ball bearings

Download this chart as a PDF with the U Series housed unit table, the Fafnir numbering note and our contact details.

Dimensions are from the FULI catalog. Timken numbers are from the Timken online catalog. Fafnir numbers are from the Timken interchange guide 7536 and are shown only where we have confirmed them; “ask us” means we have not confirmed that Fafnir or Timken number yet, so send it to us and we will check it. The C3 column shows how Timken writes the C3 version; for FULI, C3 is on request. Sources are listed at the end of the page.

Timken U Series housed units

Timken sells UC inserts and UCP, UCF and UCFL units under the same JIS-style numbers, for example UCP205, UCF205 and UCFL205 in the Timken U Series catalog. The catalog states: “Bolt-hole spacing and base-to-center height dimensions are interchangeable with competitive units.” The FULI unit with the same number has the same size code and bore.

This table lists the metric sizes we have checked in the Timken U Series catalog. For other sizes, send us the Timken number. FULI unit size tables: UCP 200 series and UCF and UCFL 200 series. SKF, NTN and Koyo unit numbers and Fafnir inch-shaft units: Pillow block bearing cross reference.

Timken metric tapered roller bearings to FULI

Timken sells metric tapered roller bearings under the ISO number, so Timken 30205 is listed as 30205 and the FULI number is also 30205. The Timken catalog E0400-GB also shows the newer ISO 355 numbers (for example T4CB100) and a J prefix for some sizes. If your drawing uses one of those, send it to us and we will check the size.

The other brands add their own codes to the same basic number. These codes mark design or ISO 355 conformance, not seals:

• NSK writes HR in front and J at the end: HR30205J.
• NTN writes 4T- in front: 4T-30205. A few sizes differ, for example 4T-30304A and 32212U.
• Koyo writes JR at the end: 30205JR. A few sizes carry -1, for example 30307JR-1.
• FAG writes -XL or -A at the end: 30205-XL, 30304-A.
• SKF’s catalog table shows only the basic number. The SKF order number usually adds J2/Q (J2 = pressed steel cage, Q = improved friction torque and raceway geometry).

Notes on this table:

• 30304: the cone width B (inner ring) is 15 mm at NSK and Timken and 16 mm at NTN and Koyo. Bore d, outside diameter D, total width T and cup width C (13 mm) match. If your fit depends on B, tell us which brand you are replacing.
• 32205: SKF does not list a standard-angle 32205. It sells 32205 BJ2/Q, where B means a larger contact angle than standard. d, D and T match the other brands; the contact angle does not. Timken lists 32205 and 32205B separately.
• SKF 30304 and 30308: we have found the full SKF order number in one source only, so that cell says “ask us”.
• Timken assembly numbers such as 30205M-90KM1: we have not confirmed what the assembly suffix covers. Send us the full number and we will check it.
• Dimensions d × D × T are from the FULI catalog. Brand numbers are from each maker’s catalog; sources are listed at the end of the page. Each FULI number links to its product page.

Fafnir housed units: check the locking type

Fafnir RAK, RAS, RCJ and RCJT units use eccentric locking collar inserts (for example G1100KRRB). FULI UC units use set screws. Fafnir set-screw units for inch shafts include YAS pillow blocks and YCJ / YCJT flange units. When you replace a Fafnir unit, tell us the full number so we can check the housing and the locking type.

Worked example: Timken 6205-2RS

Timken 6205-2RS is 25 × 52 × 15 mm with seals on both sides. The FULI number is 6205-2RS. Fafnir writes the same size as 205PP. FULI 6205 dimensions are on the 6205 bearing page; load ratings and speeds for the 6205 are still being checked against FULI’s catalog, so ask for them with the quote.

Send your Timken or Fafnir numbers

List the Timken or Fafnir numbers with suffixes and quantities. We reply with the FULI number for each line, price and lead time. Email sales@fuli-bearings.com or use the contact form.

Other brands: SKF to FULI cross reference · NSK, NTN, Koyo and NACHI to FULI cross reference. Mounted units: Pillow block bearing cross reference. All brands and suffixes: Bearing cross reference.

Timken and Fafnir are trademarks of The Timken Company. FULI is not affiliated with, authorized by or endorsed by The Timken Company. Part numbers are shown for interchange reference only. FULI dimensions, load ratings and speeds come from the FULI catalog. SKF, NSK, NTN, Koyo and FAG are trademarks of their respective owners and are shown only as reference numbers.

Sources

1. https://cad.timken.com/viewitems/deep-groove-ball-bearings/deep-groove-ball-bearings--6000--6200--6300--64
2. https://www.timken.com/wp-content/uploads/2018/04/Timken-Ball-Bearing-Catalog_10734.pdf
3. https://www.collectivebearings.com/pdf/timken-bearing-cross-reference-guide.pdf
4. https://www.timken.com/wp-content/uploads/2018/08/E11112-GB.pdf
5. https://www.timken.com/wp-content/uploads/2024/07/0A1E-FFNRMNTDBLLB-Fafnir-Mounted-Ball-Bearing-Revisions-11437_V4.pdf
6. https://www.timken.com/wp-content/uploads/2024/08/Fafnir-Ball-Bearing-Pillow-Block-Interchange-Guide_10861.pdf
7. https://www.timken.com/wp-content/uploads/2016/10/E0400-GB_TimkenMetric-Tapered-Roller-bearings-Catalog-5.pdf
8. https://cdn.skfmediahub.skf.com/api/public/0901d196807026e8/pdf_preview_medium/0901d196807026e8_pdf_preview_medium.pdf
9. https://www.nsk.com/content/dam/nsk/common/catalogs/ctrgPdf/bearings/e1103b.pdf
10. https://www.ntnbearing.in/catalog/2202E_all.pdf
11. https://koyo.jtekt.co.jp/en/support/catalog-download/uploads/catbs004en_b.pdf
12. https://www.schaeffler.us/remotemedien/media/_shared_media/08_media_library/01_publications/schaeffler_2/tpi/downloads_8/tpi_241_de_en.pdf