Manufactured by CHG Bearing, the R156* is a precision Inch Miniature Deep Groove Ball Bearings. Key dimensional parameters include a 4.762 mm bore diameter, a 7.938 mm outer diameter, and a 2.779 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.
R156* - Inch Miniature Deep Groove Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | R156* |
| Dimensions | |
| Bore Diameter (d) | 4.762 mm |
| Width (B) | 2.779 mm |
| Outer Diameter (D) | 7.938 mm |
| Open Width B | 2.779 mm |
| Radius rs min | 0.1 mm |
| Flange Df | 9.119 mm |
| Closed Width B1 | 3.175 mm |
| Open Flange Width Bf | 0.584 mm |
| Closed Flange Width Bf1 | 0.914 mm |
| Performance | |
| Dynamic Load Cr (N) | 359 N |
| Static Load C0r (N) | 150 N |
| Grease Speed (x1000 rpm) | 53 x1000 rpm |
| Oil Speed (x1000 rpm) | 63 x1000 rpm |
| Design Configurations | |
| Open Model | R156* |
| Flanged Open Model | FR156* |
| Shielded Model | R156ZZS* |
| Flanged Shielded Model | FR156ZZS* |
| 2RS | - |
| 2RU | - |
| TTS | TTS |
| Internal Design & Weight | |
| Cage Type | W |
| Ball Qty. Z | 10 |
| Ball Size Dw | 1 mm |
| Shielded Weight (g) | 0.45 g |
| Flanged Shielded Weight (g) | 0.56 g |
| Open Weight (g) | 0.4 g |
| Flanged Open Weight (g) | 0.47 g |
R156* 7.938 mm 4.762 mm 2.779 mm Frequently Asked Questions about R156* Inch Miniature Deep Groove Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
When fitting R156* over a 4.762 mm shaft, CHG Bearing strictly recommends uniform induction heating (controlled between 90°C and 110°C) or precision hydraulic press sleeves. Under no circumstances should direct impact blows be struck against the rings or cage, as shock loads cause brinelling indents and premature spalling.
Absolutely. The CHG Bearing R156* Inch Miniature Deep Groove Ball Bearings is a 1:1 direct interchange for renowned brands, matching part numbers: SKF R156*, FAG R156*, NSK R156*. It shares identical envelope boundary dimensions, load capacities, and shaft fits, allowing instant drop-in replacement without retrofitting your machinery.
Yes, CHG Bearing works closely with industrial OEMs and brand distributors. We offer turnkey custom engineering for R156*, including laser-etched customer logos, custom internal radial clearances, specialized grease formulations, and bespoke protective packaging.
In its sealed configuration (Open Type), CHG Bearing pre-charges R156* 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.
