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.
63801 - Metric Super-Thin Deep Groove Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 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 (N) | 1915 N |
| Static Load C0r (N) | 1041 N |
| Grease Speed (x1000 rpm) | 33 x1000 rpm |
| Oil Speed (x1000 rpm) | 39 x1000 rpm |
| Design Configurations | |
| Open Model | 63801 |
| Flanged Open Model | F63801 |
| Shielded Model | 63801ZZ |
| Flanged Shielded Model | F63801ZZ |
| 2RS | 2RS |
| 2RU | 2RU |
| TTS | - |
| Internal Design & Weight | |
| Cage Type | J, TW |
| Ball Qty. Z | 12 |
| Ball Size Dw | 2.381 mm |
| Shielded Weight (g) | 8.5 g |
| Flanged Shielded Weight (g) | 9.3 g |
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.
