Manufactured by CHG Bearing, the 021.25.630 is a precision Double-Row Ball Slewing Bearings. Key dimensional parameters include a 514 mm bore diameter, a 746 mm outer diameter, and a 106 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.
021.25.630 - Double-Row Ball Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 021.25.630 |
| Brand | CHG® |
| Gear Type | External Gear |
| Characteristics | |
| Bearing Type | Double-Row Ball Slewing Bearing |
| Row Configuration | Double Row |
| Dimensions | |
| Bore Diameter (d) | 514 mm |
| Width (B) | 106 mm |
| Outer Diameter (D) | 746 mm |
| End-face Height Difference h | 26 mm |
| Number of Lubrication Holes n1 | 4 |
| Ring Height H1 | 96 mm |
| Mounting Hole Diameter Φ | 18 mm |
| Performance | |
| Mounting Hole Count n | 24 |
| Tangential Tooth Force, Normalized Z (×10⁴ N) | 4.5 ×10⁴ N |
| Tangential Tooth Force, Quenched T (×10⁴ N) | 6.2 ×10⁴ N |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 710 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 550 mm |
| Lubrication Port Thread / Size Φ1 | M10×1 |
| Gear Data | |
| Gear Module m | 6 mm |
| Gear Tip Diameter De | 790.8 mm |
| Number of Gear Teeth z | 129 |
| Gear Face Width b | 60 mm |
| Addendum Modification Coefficient x | 0.5 |
| Reference Data | |
| Reference Mass (kg) | 130 kg |
021.25.630 746 mm 514 mm 106 mm 710 mm 550 mm Frequently Asked Questions about 021.25.630 Double-Row Ball Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Model 021.25.630 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 514 mm) and steep thermal gradients between inner and outer rings.
Standard batches of CHG Bearing 021.25.630 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.
Sourcing 021.25.630 directly from CHG Bearing eliminates intermediate brokerage markups while granting you factory-direct engineering backup, rigorous ISO-certified quality assurance, competitive volume wholesale pricing, and dependable supply chain stability for Double-Row Ball Slewing Bearings.
The Open Type engineered for 021.25.630 by CHG Bearing utilizes precision non-contact metal shields or reinforced NBR/FKM contact lip seals. This barrier prevents particulate ingress, washdown fluids, and abrasive dust from reaching the raceways while eliminating grease leakage under centrifugal forces.
