Manufactured by CHG Bearing, the 629 is a precision Metric Miniature Deep Groove Ball Bearings. Key dimensional parameters include a 9 mm bore diameter, a 26 mm outer diameter, and a 8 mm overall width. This component is designed to meet standard load requirements and ensure consistent operational performance. For comprehensive technical evaluation, please explore the detailed specifications, dimensional data, product images, and CAD drawings provided below. A complete PDF data sheet is also readily available for direct download to support your engineering and procurement needs.
629 - Metric Miniature Deep Groove Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 629 |
| Dimensions | |
| Bore Diameter (d) | 9 mm |
| Width (B) | 8 mm |
| Outer Diameter (D) | 26 mm |
| Open Width B | 8 mm |
| Radius rs min | 0.6 mm |
| Closed Width B1 | 8 mm |
| Performance | |
| Dynamic Load Cr (N) | 4563 N |
| Static Load C0r (N) | 1983 N |
| Grease Speed (x1000 rpm) | 28 x1000 rpm |
| Oil Speed (x1000 rpm) | 34 x1000 rpm |
| Design Configurations | |
| Open Model | 629 |
| Flanged Open Model | - |
| Shielded Model | 629ZZ |
| Flanged Shielded Model | - |
| 2RS | 2RS |
| 2RU | 2RU |
| TTS | - |
| Internal Design & Weight | |
| Cage Type | J |
| Ball Qty. Z | 7 |
| Ball Size Dw | 4.762 mm |
| Shielded Weight (g) | 21.8 g |
| Open Weight (g) | 19 g |
629 26 mm 9 mm 8 mm Frequently Asked Questions about 629 Metric Miniature Deep Groove Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
For international ocean and air freight, CHG Bearing packs 629 with industrial VCI anti-corrosion barrier wrapping, sealed polybags, individual cartons, and fumigated ocean-worthy wooden crates. This multi-layer barrier guarantees rust-free storage for a minimum shelf life of 24 to 36 months.
To safeguard CHG Bearing 629 against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (9 mm x 26 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
To ensure optimum performance of CHG Bearing 629 Metric Miniature Deep Groove Ball Bearings under general rotational loads, our application engineers advise an inner-ring shaft tolerance of m5 or k5 for the 9 mm bore. For the 26 mm outer ring, an H7 or J7 housing bore fit is recommended to eliminate creep while accommodating normal thermal gradient expansion.
In its sealed configuration (Open Type), CHG Bearing pre-charges 629 with premium wide-temperature lithium-complex or polyurea grease, calibrated to a 30%–35% cavity volume ratio. For open-type variants, synthetic PAO or refined mineral lubricating oils with appropriate EP (Extreme Pressure) additives should be circulated.
