Manufactured by CHG Bearing, the 687 is a precision Metric Miniature Deep Groove Ball Bearings. Key dimensional parameters include a 7 mm bore diameter, a 14 mm outer diameter, and a 3.5 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.
687 - Metric Miniature Deep Groove Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 687 |
| Dimensions | |
| Bore Diameter (d) | 7 mm |
| Width (B) | 3.5 mm |
| Outer Diameter (D) | 14 mm |
| Open Width B | 3.5 mm |
| Radius rs min | 0.15 mm |
| Flange Df | 16 mm |
| Closed Width B1 | 5 mm |
| Open Flange Width Bf | 1 mm |
| Closed Flange Width Bf1 | 1.1 mm |
| Performance | |
| Dynamic Load Cr (N) | 1173 N |
| Static Load C0r (N) | 513 N |
| Grease Speed (x1000 rpm) | 40 x1000 rpm |
| Oil Speed (x1000 rpm) | 50 x1000 rpm |
| Design Configurations | |
| Open Model | 687 |
| Flanged Open Model | F687 |
| Shielded Model | 687ZZ |
| Flanged Shielded Model | F687ZZ |
| 2RS | 2RS |
| 2RU | 2RU |
| TTS | TTS |
| Internal Design & Weight | |
| Cage Type | J |
| Ball Qty. Z | 9 |
| Ball Size Dw | 2 mm |
| Shielded Weight (g) | 2.95 g |
| Flanged Shielded Weight (g) | 3.35 g |
| Open Weight (g) | 2.03 g |
| Flanged Open Weight (g) | 2.4 g |
687 14 mm 7 mm 3.5 mm Frequently Asked Questions about 687 Metric Miniature Deep Groove Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Built for demanding industrial environments, the 687 Metric Miniature Deep Groove Ball Bearings by CHG Bearing boasts a dynamic load rating (Cr) of standard dynamic and a static load threshold (C0r) of standard static. The optimized internal raceway geometry balances stress distribution, mitigating edge loading even when operating under peak mechanical stresses.
To match diverse operational dynamics, CHG Bearing supplies 687 with multiple cage configurations: high-strength pressed steel ribbon cages for standard duty, solid machined brass cages (M/CA) for heavy vibration and shock loads, or lightweight glass-fiber reinforced polyamide cages (TN9/TVP) for high acceleration and ultra-low noise.
To extend the trouble-free lifespan of CHG Bearing 687, preventive maintenance routines should monitor operating housing temperature (normally maintaining below 70°C) and conduct regular vibration FFT analysis to identify early raceway micro-pitting before unexpected line halts occur.
As standard production, CHG Bearing subjects 687 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.
