Manufactured by CHG Bearing, the 63801 is a precision Metric Super-Thin Deep Groove Ball Bearings. Key dimensional parameters include a 12 mm bore diameter, a 21 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.
Technical Specifications
| Overview | |
|---|---|
| Part Number | 63801 63801 |
| Dimensions | |
| Bore Diameter (d) | 12 mm |
| Width (B) | 7 mm |
| Outer Diameter (D) | 21 mm |
| Radius rs min | 0.3 mm |
| Flange Df | 23 mm |
| Flange Width Bf | 1.5 mm |
| Performance | |
| Dynamic Load Cr | 1915 N 430.51 lbf |
| Static Load C0r | 1041 N 234.03 lbf |
| Grease Speed (x1000 rpm) | 33 x1000 rpm 33 x1000 rpm |
| Oil Speed (x1000 rpm) | 39 x1000 rpm 39 x1000 rpm |
| Design Configurations | |
| Open Model | 63801 63801 |
| Flanged Open Model | F63801 F63801 |
| Shielded Model | 63801ZZ 63801ZZ |
| Flanged Shielded Model | F63801ZZ F63801ZZ |
| 2RS | 2RS 2RS |
| 2RU | 2RU 2RU |
| TTS | - - |
| Internal Design & Weight | |
| Cage Type | J, TW J, TW |
| Ball Qty. Z | 12 12 |
| Ball Size Dw | 2.381 mm |
| Shielded Weight | 8.5 g 0.0187 lb |
| Flanged Shielded Weight | 9.3 g 0.0205 lb |
63801 21 mm 12 mm 7 mm Frequently Asked Questions about 63801 Metric Super-Thin Deep Groove Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Model 63801 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 12 mm) and steep thermal gradients between inner and outer rings.
Standard batches of CHG Bearing 63801 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.
To ensure optimum performance of CHG Bearing 63801 Metric Super-Thin Deep Groove Ball Bearings under general rotational loads, our application engineers advise an inner-ring shaft tolerance of m5 or k5 for the 12 mm bore. For the 21 mm outer ring, an H7 or J7 housing bore fit is recommended to eliminate creep while accommodating normal thermal gradient expansion.
In its sealed configuration (Open Type), CHG Bearing pre-charges 63801 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.
