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When your build demands a bearing that fits where standard units simply won't, engineers, hobbyists, and repair technicians reach for thin wall deep groove ball bearings. The 6700ZZ through 6707ZZ series is designed for applications where radial space is at a premium — from compact RC drivetrains to medical-grade instrumentation — and where consistent rotational accuracy is non-negotiable.
Each bearing in this series features a steel inner and outer ring with a full complement of chrome steel balls retained in a pressed-steel cage, sealed on both sides by metal shields (ZZ designation). Sizes span from 6700ZZ (10 × 15 × 4 mm / 0.39" × 0.59" × 0.16") up to 6707ZZ (35 × 44 × 5 mm / 1.38" × 1.73" × 0.20"), covering bore diameters of 10–35 mm across the range.
Typical use cases include thin wall deep groove ball bearings for RC car wheel hubs, robotics joint assemblies requiring low-profile deep groove bearings, skateboard and inline skate axle replacements, and precision spindle bearings for CNC router Z-axis carriages. Available in packs of 1, 10, 30, or 50 pieces to suit prototyping through production runs.
Reduced cross-section (4–5 mm width) allows installation in space-constrained housings where standard bearings cannot fit, without sacrificing load capacity.
Both sides sealed with pressed-steel shields to retain factory grease and block coarse contaminants — no additional sealing hardware required for most indoor applications.
Inner ring, outer ring, and balls manufactured from through-hardened chrome steel (typically GCr15 / 52100 equivalent) for consistent hardness and fatigue resistance across the load cycle.
Select from 6700ZZ through 6707ZZ — bore diameters 10 mm to 35 mm — so you can source the exact fit for your project without hunting across multiple listings.
Available in 1, 10, 30, or 50-piece packs. Order a single unit for a repair job or a bulk pack for production assembly — per-unit cost decreases with larger quantities.
Dimensionally interchangeable with ABEC-standard 6700–6707 series bearings from other manufacturers, making these a direct swap for worn or failed units in existing equipment.
| Bearing Series | 6700ZZ – 6707ZZ |
|---|---|
| Bore Diameter (ID) | 10 mm – 35 mm (see variant options) |
| Outer Diameter (OD) | 15 mm – 44 mm (see variant options) |
| Width | 4 mm (6700ZZ–6706ZZ) / 5 mm (6707ZZ) |
| Shield Type | ZZ (double metal shield, both sides) |
| Material | Chrome steel (GCr15 / 52100 equivalent) |
| Cage Type | Pressed steel |
| Lubrication | Factory-greased (sealed, non-contact shields) |
| Operating Temperature | See variant options |
| Dynamic Load Rating (Cr) | See variant options |
| Static Load Rating (C0r) | See variant options |
| Pack Quantity | 1 / 10 / 30 / 50 pcs (select above) |
Match the bearing to your shaft bore diameter first: 6700ZZ fits a 10 mm shaft, 6701ZZ fits 12 mm, 6702ZZ fits 15 mm, 6703ZZ fits 17 mm, 6704ZZ fits 20 mm, 6705ZZ fits 25 mm, 6706ZZ fits 30 mm, and 6707ZZ fits a 35 mm shaft. Then confirm the outer diameter fits your housing and the 4–5 mm width clears your assembly. All dimensions are listed in the variant selector above.
ZZ indicates double metal shields on both sides of the bearing. The shields retain factory-applied grease and prevent coarse particles from entering the raceway. Unlike rubber seals (2RS), ZZ shields are non-contact, which means slightly lower friction and higher speed capability — but less protection against fine dust or liquid ingress. For wet or heavily contaminated environments, consider a 2RS-sealed variant instead.
The 6700–6707ZZ series is rated for light-to-moderate radial loads typical of RC vehicles, robotics joints, skateboard axles, small motors, and precision instruments. They are not designed for heavy axial (thrust) loads or shock-heavy industrial machinery. If your application involves significant axial loading, consider angular contact or thrust bearings instead. Specific dynamic and static load ratings vary by size — contact us to confirm for your use case.
Chrome steel bearings offer moderate corrosion resistance suitable for dry and lightly humid indoor environments. For outdoor, marine, or washdown applications where moisture exposure is frequent, stainless steel bearings (e.g., 6700ZZ in AISI 440C) are a more appropriate choice. The ZZ metal shields provide a basic barrier but are not waterproof.
Yes — the 6700ZZ through 6707ZZ series follows standard ISO/ABEC dimensional specifications, making them dimensionally interchangeable with bearings of the same designation from other manufacturers. Confirm the bore, OD, and width match your current bearing's stamped numbers before ordering. If your existing bearing is marked 6702ZZ, for example, the 6702ZZ variant in this listing is a direct drop-in replacement.
For a single repair or prototype build, the 1-piece pack is the most economical entry point. If you're building multiple units or want spares on hand, the 10-piece pack offers a lower per-unit cost. The 30- and 50-piece packs are suited for small production runs or workshop stock. All pack sizes ship the same bearing — only the quantity and per-unit price differ.
Yes. Each bearing is factory-greased before the ZZ shields are fitted. For most applications — RC cars, robotics, skateboards, small appliances — no additional lubrication is needed out of the box. If you're running at elevated temperatures or very high RPM, you may wish to re-grease with a compatible bearing grease after initial break-in. Do not wash ZZ-shielded bearings with solvent, as this removes the factory grease.
