Qingdao Gleam Hardwares manufactures 625ZZ shielded bearings for compact pulley, door and window roller assemblies. This page is focused on buyers searching for a 625ZZ bearing core rather than a finished plastic-coated wheel. The final pulley diameter and groove profile belong to the assembled roller and must be specified separately.
625ZZ Bearing Specification Review
| Specification point | Purchasing requirement |
|---|---|
| Product type | Miniature single-row deep groove ball bearing |
| Reference model | 625ZZ / complete suffix to be confirmed |
| Closure | Metal shields on both sides for the ZZ version |
| Nominal catalogue size | 5 × 16 × 5 mm; verify against the drawing and sample |
| Finished component | Bare bearing core or assembled pulley, stated clearly in the RFQ |
| Fit | Shaft and housing or overmolded wheel fit confirmed by drawing |
| Packaging | Neutral or customized labeling subject to order review |
625ZZ Is Not the Finished Pulley Size
A common purchasing error is to assume that the bearing outside diameter is the same as the completed door roller diameter. A 625ZZ core can be integrated into different housings or wheels. When requesting a 625ZZ sliding door roller bearing or a 625ZZ pulley bearing, provide both the bearing size and the finished roller dimensions.
Where This Bearing Core Is Evaluated
- Compact sliding door and window pulley assemblies
- Furniture, cabinet and wardrobe rollers
- Small guide wheels and hardware mechanisms
- Custom nylon, POM or metal roller assemblies developed from a drawing
Suitability depends on the track, installation, load, contamination and operating conditions. Sample approval should be based on the customer’s real assembly rather than the model number alone.
B2B Value for Importers and Hardware Brands
Clear separation between the bearing core and finished pulley helps prevent fitment complaints, repeated sampling and mislabeled inventory. We can review the core, roller drawing, label and packaging together so distributors can build a more reliable replacement-parts range and brands can maintain consistent specifications between repeat orders.
625ZZ vs 626ZZ
These model numbers are not interchangeable. Confirm the bore, outside diameter, width, closure and finished wheel specification before changing from a 625ZZ to a 626ZZ or another compact bearing. See our door roller bearing comparison guide.
FAQ
Can you supply a completed 625ZZ plastic pulley wheel?
It can be evaluated from the finished wheel drawing or sample. Material, outside diameter, width and groove must be confirmed independently from the bearing code.
What should I send for a faster quotation?
Send the full code, verified dimensions, application photo or drawing, quantity, destination market and packaging requirement.
Get an OEM Quote for 625ZZ Bearings
Send your 625ZZ bearing or finished pulley specification. We will check the code, dimensions, application and packaging before quoting.
