• 2PACK TIMKEN 6203-2ZC3 / 6203-2Z Double Metal Seal Bearings — 17x40x12mm
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TIMKEN

2PACK TIMKEN 6203-2ZC3 / 6203-2Z Double Metal Seal Bearings — 17x40x12mm

2PACK TIMKEN 6203-2ZC3 / 6203-2Z Double Metal Seal Bearings — 17x40x12mm

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✔ 2PACK TIMKEN 6203-2ZC3 / 6203-2Z Double Metal Seal Bearings — 17x40x12mm
✔ Size: 17 × 40 × 12 mm (standard 6203 series)
✔ Double Metal Shields (2Z / ZZ) — Pre-Lubricated for Stable Performance
✔ C3 Internal Clearance — optimized for thermal expansion and higher speeds
✔ Hardened Chrome Steel Construction
✔ Cost-Effective Solution — High Quality at a Competitive Price
✔ Interchanges with SKF 6203-2Z, NSK 6203ZZ, NTN 6203ZZ

 

TIMKEN 6203-2ZC3 Double Metal Seal Bearings — 17x40x12 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 6203-2ZC3 bearings ensures smooth operation, stable performance, and cost-effective reliability.

These are TIMKEN 6203-2ZC3 single-row deep groove radial ball bearings with double metal shields (2Z) and C3 internal clearance. 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. The C3 clearance designation means the internal clearance is greater than standard (CN), making it suitable for applications involving thermal expansion or higher operating speeds.


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 (2Z) keep grease in and dirt out
• ✔ C3 internal clearance — optimized for thermal expansion and higher speeds
• ✔ Factory pre-lubricated — no maintenance lubrication required
• ✔ Hardened chrome steel — TIMKEN's standard bearing material for durability
• ✔ Standard 6203 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 6203-2ZC3 ball bearings

FAQ

FAQ

Is this the same as SKF 6203-2Z or NSK 6203ZZ?
They are dimensional equivalents: the same 6203 size (17 × 40 × 12 mm) with two metal shields. The suffixes 2Z, ZZ, and 2ZR all denote the same shield configuration across brands. The C3 suffix indicates greater internal clearance. They interchange by size, but they are different manufacturers' parts.

What does "2Z" or "ZZ" mean?
Two metal shields (dust covers) — one on each side of the bearing. They keep the factory grease in and contamination out.

What does "C3" mean?
C3 indicates internal clearance greater than the standard (CN) clearance. This allows for thermal expansion during operation, making it suitable for higher-speed or higher-temperature applications.

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 6203-2ZC3 bearings are included in this listing.

How do I know this is the right size?
Check the number stamped on your old bearing: 6203-2Z, 6203-2ZC3, 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 ~14,000–20,000 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 2Z version with metal shields. If you need rubber contact seals, look for the 2RS version (e.g., TIMKEN 6203-2RS).

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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