Manufactured by CHG Bearing, the 608 is a precision Metric Miniature Deep Groove Ball Bearings. Key dimensional parameters include a 8 mm bore diameter, a 22 mm outer diameter, and a 7 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.
608 - Metric Miniature Deep Groove Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 608 |
| Dimensions | |
| Bore Diameter (d) | 8 mm |
| Width (B) | 7 mm |
| Outer Diameter (D) | 22 mm |
| Open Width B | 7 mm |
| Radius rs min | 0.3 mm |
| Flange Df | 25 mm |
| Closed Width B1 | 7 mm |
| Open Flange Width Bf | 1.5 mm |
| Closed Flange Width Bf1 | 1.5 mm |
| Performance | |
| Dynamic Load Cr (N) | 3293 N |
| Static Load C0r (N) | 1379 N |
| Grease Speed (x1000 rpm) | 34 x1000 rpm |
| Oil Speed (x1000 rpm) | 40 x1000 rpm |
| Design Configurations | |
| Open Model | 608 |
| Flanged Open Model | F608 |
| Shielded Model | 608ZZ |
| Flanged Shielded Model | F608ZZ |
| 2RS | 2RS |
| 2RU | 2RU |
| TTS | TTS |
| Internal Design & Weight | |
| Cage Type | J, TW |
| Ball Qty. Z | 7 |
| Ball Size Dw | 3.969 mm |
| Shielded Weight (g) | 12.9 g |
| Flanged Shielded Weight (g) | 14.2 g |
| Open Weight (g) | 11.8 g |
| Flanged Open Weight (g) | 13.1 g |
608 22 mm 8 mm 7 mm Frequently Asked Questions about 608 Metric Miniature Deep Groove Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
To safeguard CHG Bearing 608 against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (8 mm x 22 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
As a primary manufacturer, CHG Bearing supports both trial batch evaluations and container-load supply for 608. Standard catalog sizes are stocked for rapid 3–7 day dispatch, while high-volume OEM production runs typically dispatch within 30–45 days.
Model 608 is manufactured by CHG Bearing in standard Normal clearance (CN) for ambient temperature transmission, and C3 or C4 clearance for heavy duty applications. C3 clearance compensates for radial shrinkage caused by tight shaft press-fits (bore 8 mm) and steep thermal gradients between inner and outer rings.
Quality starts with raw material selection: CHG Bearing crafts 608 inner and outer rings from high-purity High-Quality Chrome Steel (GCr15/100Cr6). Our raw billets undergo vacuum degassing and secondary ESR (electroslag remelting) processes to drastically eliminate non-metallic sulfide and oxide inclusions, elevating subsurface contact fatigue resistance.
