Manufactured by CHG Bearing, the 021.30.900 is a precision Double-Row Ball Slewing Bearings. Key dimensional parameters include a 758 mm bore diameter, a 1042 mm outer diameter, and a 124 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.
021.30.900 - Double-Row Ball Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 021.30.900 |
| Brand | CHG® |
| Gear Type | External Gear |
| Characteristics | |
| Bearing Type | Double-Row Ball Slewing Bearing |
| Row Configuration | Double Row |
| Dimensions | |
| Bore Diameter (d) | 758 mm |
| Width (B) | 124 mm |
| Outer Diameter (D) | 1042 mm |
| End-face Height Difference h | 29 mm |
| Number of Lubrication Holes n1 | 6 |
| Ring Height H1 | 114 mm |
| Mounting Hole Diameter Φ | 22 mm |
| Performance | |
| Mounting Hole Count n | 30 |
| Tangential Tooth Force, Normalized Z (×10⁴ N) | 8 ×10⁴ N |
| Tangential Tooth Force, Quenched T (×10⁴ N) | 11.1 ×10⁴ N |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 998 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 802 mm |
| Lubrication Port Thread / Size Φ1 | M10×1 |
| Gear Data | |
| Gear Module m | 8 mm |
| Gear Tip Diameter De | 1086.4 mm |
| Number of Gear Teeth z | 133 |
| Gear Face Width b | 80 mm |
| Addendum Modification Coefficient x | 0.5 |
| Reference Data | |
| Reference Mass (kg) | 250 kg |
021.30.900 1042 mm 758 mm 124 mm 998 mm 802 mm Frequently Asked Questions about 021.30.900 Double-Row Ball Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
To match diverse operational dynamics, CHG Bearing supplies 021.30.900 with multiple cage configurations: high-strength pressed steel ribbon cages for standard duty, solid machined brass cages (M/CA) for heavy vibration and shock loads, or lightweight glass-fiber reinforced polyamide cages (TN9/TVP) for high acceleration and ultra-low noise.
Yes, 100% of 021.30.900 Double-Row Ball Slewing 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.
Standard batches of CHG Bearing 021.30.900 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 021.30.900 Double-Row Ball Slewing Bearings under general rotational loads, our application engineers advise an inner-ring shaft tolerance of m5 or k5 for the 758 mm bore. For the 1042 mm outer ring, an H7 or J7 housing bore fit is recommended to eliminate creep while accommodating normal thermal gradient expansion.
