• TIMKEN 6308-ZZ Double Metal Seal Bearings (Pack of 2)
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TIMKEN 6308-ZZ Double Metal Seal Bearings (Pack of 2)

TIMKEN 6308-ZZ Double Metal Seal Bearings (Pack of 2)

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✔ TIMKEN 6308-ZZ Double Metal Seal Bearings — 2 Pcs, 40x90x23mm
✔ Size: 40 × 90 × 23 mm (standard 6308 series)
✔ Double Metal Shields (ZZ) — Pre-Lubricated for Stable Performance
✔ Hardened Chrome Steel Construction
✔ Cost-Effective Solution — High Quality at a Competitive Price
✔ Deep Groove Ball Bearing — supports radial and moderate axial loads
✔ Interchanges with SKF 6308-2Z, NSK 6308ZZ, NTN 6308ZZ

TIMKEN 6308-ZZ Double Metal Seal Bearings — 40x90x23 mm (Pack of 2)

A grinding or whining noise from a rotating component, play you can feel by hand, a hot housing, or grease leaking past a damaged shield — a worn ball bearing announces itself early. Ignore it, and it can damage the shaft or housing. Replacing worn bearings with this pack of two TIMKEN 6308-ZZ bearings ensures smooth operation, stable performance, and cost-effective reliability.

These are TIMKEN 6308-ZZ single-row deep groove radial ball bearings with double metal shields (ZZ). They are pre-lubricated at the factory with high-quality grease for long-lasting, maintenance-free operation. The metal shields protect the bearing from dust, dirt, and moisture while retaining the grease inside. This listing includes two bearings.

When to Replace

• Grinding, whining, or rumbling noise from the bearing location
• Noticeable play or wobble in the shaft
• Housing running hot
• Grease leaking past a damaged shield
• A bearing removed from a shaft should always be replaced — never reinstall a used bearing

Product Details & Highlights

• ✔ TIMKEN single-row deep groove radial ball bearing
• ✔ Double metal shields on both sides (ZZ) keep grease in and dirt out
• ✔ Factory pre-lubricated — no maintenance lubrication required
• ✔ Hardened chrome steel — TIMKEN's standard bearing material for durability
• ✔ Standard 6308 size — used in electric motors, pumps, power tools, automotive components, and industrial equipment
• ✔ Cost-effective 2-pack — high performance at a competitive price
• ✔ Two bearings included in this listing

Package Contents

• 2 × TIMKEN 6308-ZZ ball bearings

FAQ

FAQ

Is this the same as SKF 6308-2Z or NSK 6308ZZ?
They are dimensional equivalents: the same 6308 size (40 × 90 × 23 mm) with two metal shields. The suffixes ZZ, 2Z, and 2ZR all denote the same shield configuration across brands. They interchange by size, but they are different manufacturers' parts.

What does "ZZ" mean?
Two metal shields (dust covers) — one on each side of the bearing. They keep the factory grease in and contamination out.

Do I need to grease it?
No. The bearing comes pre-greased and sealed; it is not designed to be re-lubricated.

Can I reuse a bearing after pulling it off a shaft?
No. A bearing removed from a shaft should be replaced — reinstalling it risks early failure.

How many bearings do I get?
Two TIMKEN 6308-ZZ bearings are included in this listing.

How do I know this is the right size?
Check the number stamped on your old bearing: 6308-ZZ, or any of the interchange numbers listed above, confirms the fit.

What is the maximum speed I can run this bearing at?
The reference speed is ~7,000–10,000 rpm for grease lubrication, but the maximum safe speed depends on load, temperature, and application conditions. Consult your equipment manual for guidance.

Can this bearing handle axial load?
Yes — deep groove ball bearings can handle moderate axial loads, but they are primarily designed for radial loads.

Does this bearing come with metal shields or rubber seals?
This is the ZZ version with metal shields. If you need rubber contact seals, look for the 2RS version (e.g., TIMKEN 6308-2RS).

Is this a good value for the money?
Yes — this 2-pack offers two high-quality TIMKEN bearings at a cost-effective price, making it an economical choice for maintenance and repairs.

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