Miniature Bearings 608ZZ for Hardware and Roller Assemblies
Our miniature bearings 608ZZ page focuses on the 8 × 22 × 7mm shielded bearing used inside compatible rollers and compact mechanisms. Qingdao Gleam Hardwares reviews material, clearance, lubrication and inspection requirements with importers and component manufacturers, so repeat orders are based on a defined bearing specification.
A 608ZZ is a single-row deep-groove ball bearing. The ZZ designation identifies metal shields on both sides; rubber-sealed 608-2RS bearings are a separate closure option.
| Specification | Selection details |
|---|---|
| Bearing code | 608ZZ; verify the manufacturer’s suffix and supplied closure. |
| Construction | Single-row deep-groove ball bearing. |
| Dimensions: bore × outside × width | 8 × 22 × 7mm nominal reference dimensions. |
| Closure | Metal shields on both sides; 608-2RS rubber-sealed versions specified separately. |
| Material | Carbon-steel or chrome-steel construction reviewed for the application; stainless enquiries quoted separately. |
| Internal clearance | Specify required radial internal clearance; it is not an oil-gap measurement. |
| Tolerance and inspection | Agreed tolerance class and inspection records for the quoted model. |
| Lubrication and packing | Grease requirements, quantity per pack and bulk carton protection defined in the order. |
Carbon Steel or Chrome Steel?
Compare materials against load, running time, speed and exposure. Buyers sourcing carbon steel bearings 608ZZ for cost-sensitive hardware should evaluate a sample in the complete mechanism. When the duty is more demanding, send the working conditions so an appropriate construction can be reviewed. A shared 608 size does not make different materials equivalent.
Shields, Seals and Assembly Fit
Metal shields help retain lubricant and limit entry of debris. Rubber seals have a different construction and friction behaviour. Select the closure for the environment, and confirm the shaft and housing fits before assembly.
The bare bearing dimensions do not define the finished diameter of a plastic-coated wheel. For a moulded roller, the outer profile, wall thickness, bore fit and hub width belong on the assembly drawing.
Wholesale Ordering Questions
Does a higher precision grade guarantee better performance?
Precision class describes dimensional and running tolerances. Material, lubrication, closure and application testing also matter. Put the required class and acceptance checks on the purchase specification.
Can I order these for skate wheels?
Where the wheel uses a compatible 608 bearing seat, compare the fit and spacer arrangement. Our 608 bearings for skateboard and inline skates page covers that application more directly.
What should a hardware buyer send?
Provide the bearing code, material requirement, operating conditions, quantity and packing format. For coated rollers use our bearings for sliding doors and windows page; for neighbouring codes compare the 605ZZ–608ZZ miniature bearing range.
Browse the bearing category to keep bare bearings and finished roller assemblies separate in your enquiry.
Request a Product-Matched Quotation
Send your drawing or product photo, required dimensions, operating conditions and expected quantity. We will review the specification and provide quotation details for your project.
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