Qingdao Gleam Hardwares manufactures 625ZZ Bearing for Door and Window Pulleys as industrial pulley cores for door and window roller assemblies. A 625ZZ bearing for sliding door rollers can be reviewed as a bare pulley core or as part of a complete roller assembly. The finished wheel diameter, groove profile, fit, material option, packaging and wholesale MOQ are confirmed separately for each B2B program.
625ZZ Bearing for Sliding Door Rollers and Pulley Assemblies
As a 625ZZ window pulley bearing manufacturer, we support importers, door and window hardware producers, distributors and private-label brands. Buyers should identify whether the RFQ covers the 625ZZ pulley core alone or a finished overmolded or machined roller assembly.
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 |
| Material review | Carbon steel, chrome steel or stainless steel can be evaluated; final grade and suitability must be confirmed against the drawing, environment and approved sample. |
| Wholesale MOQ | Confirmed after the pulley core or finished roller assembly, material, grease, labeling, packing and expected order volume are defined. |
| Packaging | Neutral or customized labeling subject to order review. |
5x16x5mm Bearing for Nylon Pulley Core
The nominal 625ZZ catalogue size is commonly referenced as 5 × 16 × 5 mm. For a 5x16x5mm bearing for nylon pulley core project, the bearing dimensions do not define the finished wheel outside diameter, width, groove or overmolding fit. Submit both the pulley core specification and the complete roller assembly drawing.
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 625ZZ Pulley Core Is Evaluated
- 625ZZ bearing for sliding door rollers and compact window pulley assemblies
- 625ZZ shielded miniature bearing for cabinet rollers, furniture and wardrobe hardware
- 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 Window Pulley Bearing Manufacturer for B2B Programs
For importers and brands, the commercial unit may be a loose pulley core, an overmolded wheel or a finished roller assembly. We therefore review the drawing, sample, annual demand, packing format and wholesale MOQ together. This reduces fitment mistakes and makes repeat purchasing easier to control.
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.
Material Review for Bulk and Corrosion-Exposed Applications
A carbon steel 625ZZ bearing bulk supplier request must identify the actual steel specification, shield, grease and acceptance criteria rather than relying on the model number alone. A stainless steel 625ZZ bearing for shower pulleys enquiry also requires the stainless grade, moisture exposure, wheel material and corrosion test method to be agreed before quotation. We do not treat these material options as interchangeable.
FAQ
Can you quote a 625ZZ bearing for overmolded wheels wholesale program?
Yes. Send the pulley core fit, finished wheel material, outside diameter, width, groove, quantity and packaging. We will evaluate the complete roller assembly and confirm the project-specific wholesale MOQ.
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.
Request a 625ZZ Bearing Quotation
Send your 625ZZ bearing or finished pulley specification. We will check the code, dimensions, application and packaging before quoting.
