Manufactured by CHG Bearing, the 685 is a precision Metric Miniature Deep Groove Ball Bearings. Key dimensional parameters include a 5 mm bore diameter, a 11 mm outer diameter, and a 3 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.
685 - Metric Miniature Deep Groove Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 685 |
| Dimensions | |
| Bore Diameter (d) | 5 mm |
| Width (B) | 3 mm |
| Outer Diameter (D) | 11 mm |
| Open Width B | 3 mm |
| Radius rs min | 0.15 mm |
| Flange Df | 12.5 mm |
| Closed Width B1 | 5 mm |
| Open Flange Width Bf | 0.8 mm |
| Closed Flange Width Bf1 | 1 mm |
| Performance | |
| Dynamic Load Cr (N) | 716 N |
| Static Load C0r (N) | 282 N |
| Grease Speed (x1000 rpm) | 45 x1000 rpm |
| Oil Speed (x1000 rpm) | 53 x1000 rpm |
| Design Configurations | |
| Open Model | 685 |
| Flanged Open Model | F685 |
| Shielded Model | 685ZZ |
| Flanged Shielded Model | F685ZZ |
| 2RS | 2RS |
| 2RU | 2RU |
| TTS | - |
| Internal Design & Weight | |
| Cage Type | J, TW |
| Ball Qty. Z | 8 |
| Ball Size Dw | 1.588 mm |
| Shielded Weight (g) | 1.93 g |
| Flanged Shielded Weight (g) | 2.15 g |
| Open Weight (g) | 1.16 g |
| Flanged Open Weight (g) | 1.33 g |
685 11 mm 5 mm 3 mm Frequently Asked Questions about 685 Metric Miniature Deep Groove Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Standard batches of CHG Bearing 685 conform strictly to ISO Class Normal (ABEC-1). For high-precision machine tool spindles, gearboxes, or robotics requiring tighter runouts, CHG Bearing can provide custom batches graded to ISO Class 6 (P6/ABEC-3) or ISO Class 5 (P5/ABEC-5) with 100% micrometer verification.
In its sealed configuration (Open Type), CHG Bearing pre-charges 685 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.
As standard production, CHG Bearing subjects 685 to precision bainite or martensite quenching, offering dimensional stability up to 120°C (248°F). For high-heat processing equipment, CHG Bearing also supplies custom S0 (150°C), S1 (200°C), or S2 (250°C) stabilization heat treatments upon request to prevent residual austenite transformation.
To safeguard CHG Bearing 685 against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (5 mm x 11 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
