Manufactured by CHG Bearing, the R166* is a precision Inch Miniature Deep Groove Ball Bearings. Key dimensional parameters include a 4.762 mm bore diameter, a 9.525 mm outer diameter, and a 3.175 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.
R166* - Inch Miniature Deep Groove Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | R166* |
| Dimensions | |
| Bore Diameter (d) | 4.762 mm |
| Width (B) | 3.175 mm |
| Outer Diameter (D) | 9.525 mm |
| Open Width B | 3.175 mm |
| Radius rs min | 0.1 mm |
| Flange Df | 10.719 mm |
| Closed Width B1 | 3.175 mm |
| Open Flange Width Bf | 0.584 mm |
| Closed Flange Width Bf1 | 0.787 mm |
| Performance | |
| Dynamic Load Cr (N) | 709 N |
| Static Load C0r (N) | 272 N |
| Grease Speed (x1000 rpm) | 50 x1000 rpm |
| Oil Speed (x1000 rpm) | 60 x1000 rpm |
| Design Configurations | |
| Open Model | R166* |
| Flanged Open Model | FR166* |
| Shielded Model | R166ZZ* |
| Flanged Shielded Model | FR166ZZ* |
| 2RS | - |
| 2RU | - |
| TTS | TTS |
| Internal Design & Weight | |
| Cage Type | J |
| Ball Qty. Z | 8 |
| Ball Size Dw | 1.588 mm |
| Shielded Weight (g) | 0.85 g |
| Flanged Shielded Weight (g) | 0.97 g |
| Open Weight (g) | 0.81 g |
| Flanged Open Weight (g) | 0.9 g |
R166* 9.525 mm 4.762 mm 3.175 mm Frequently Asked Questions about R166* Inch Miniature Deep Groove Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Each R166* produced in CHG Bearing manufacturing facilities features accurately profiled corner chamfers complying with DIN 5412 / ISO standard corner radii. When designing mating shafts and housing shoulders, machining an undercut or fillet radius strictly within the inner ring clearance limit (4.762 mm bore side) ensures perfect planar contact without edge binding.
Yes, 100% of R166* Inch Miniature Deep Groove Ball Bearings leaving CHG Bearing production lines are subjected to multi-frequency Anderometer sound testing. All units satisfy baseline Z1V1 levels, with dedicated quiet-running electric motor quality (EMQ) lots certified to Z2V2 and Z3V3 standards for silent machinery integration.
As standard production, CHG Bearing subjects R166* 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.
Every production batch of CHG Bearing R166* Inch Miniature Deep Groove Ball Bearings comes with complete traceability. Upon shipment, CHG Bearing can provide EN 10204 3.1 Material Test Reports (MTR), Certificates of Conformity (CoC), spectral chemical composition analysis, and dimensional inspection sheets.
