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2PACK TIMKEN 6004-ZZ Double Metal Seal Bearings 20x42x12mm

2PACK TIMKEN 6004-ZZ Double Metal Seal Bearings 20x42x12mm

$16.69 USD
$16.69 USD
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✔ TIMKEN 6004-ZZ Double Metal Seal Bearings — Pack of 2
✔ Size: 20 × 42 × 12 mm (standard 6004 series)
✔ Double Metal Shields (ZZ) — Factory Pre-Lubricated
✔ Hardened Chrome Steel Construction
✔ Interchanges with SKF 6004-2Z, NSK 6004ZZ, NTN 6004ZZ

 

TIMKEN 6004-ZZ Double Metal Seal Bearings — 20x42x12 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 seal — 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 6004-ZZ bearings ensures smooth operation and reliable performance.

These are TIMKEN 6004-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


When to Replace (Common Symptoms)
• Grinding, whining, or rumbling noise from the bearing location
• Noticeable play or wobble in the shaft
• Housing running hot
• Grease leaking past a torn or damaged seal
• A bearing removed from a shaft should always be replaced — never reinstall a used bearing

Product Details & Highlights


Product 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
• ✔ Standard 6004 size — used in electric motors, power tools, pumps, automotive alternators, and appliances
• ✔ Two bearings included in this listing

Package Contents


Package Contents
• 2 × TIMKEN 6004-ZZ ball bearings

FAQ

FAQ

Is this the same as SKF 6004-2Z or NSK 6004ZZ?
They are dimensional equivalents: the same 6004 size (20 × 42 × 12 mm) with two metal shields. The suffixes ZZ, 2Z, 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 6004-ZZ bearings are included in this listing.

How do I know this is the right size?
Check the number stamped on your old bearing: 6004-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 ~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. For heavy axial loads, a different bearing type may be needed.

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 6004-2RS).

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