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Angular Contact Bearing Rings
Angular Contact Bearing Rings
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Angular Contact Bearing Rings
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Angular Contact Bearing Rings
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Angular Contact Bearing Rings
| Part Category | Part Name | Material Recommendation | Specifications and Models (National Standard / Example) | Core Dimension Parameters (Example, Unit: mm) | Key Performance Parameters | Applicable Scenarios | Remarks |
| Single-Row Angular Contact Bearing | Single-Row Angular Contact Bearing Inner Ring | - Bearing Steel (GCr15SiMn, General Purpose)- Stainless Steel (440C, Corrosion-Resistant)- High-Temperature Bearing Steel (GCr15SiMo, High-Temperature) | GB/T 292 Example: 7005 Inner Ring, 7210 Inner Ring | Inner Diameter (d): 25 (G5), 50 (k5); Outer Ring Matching Diameter (d2): 35 (r6), 65 (r6); Width (B): 13, 16; Contact Angle (α): 15°/25°/40°; Cylindricity (Inner Bore): ±0.002mm (P4 Grade), ±0.004mm (P5 Grade) | Hardness: HRC 60-64 (GCr15SiMn), HRC 58-62 (440°C) Contact fatigue life: ±1500h (rated load, GCr15SiMn) Surface roughness: Ra ±0.1µm (raceway surface) Temperature resistance: ±150°C (GCr15SiMn), ±300°C (440°C) | High-speed, light-load/medium-load applications, such as machine tool spindles, motor shafts, and precision centrifuges | Interference fit with the shaft (H7/k5); contact angle of 15° for high speeds, 40° for heavy axial loads; requires use with a retainer |
| Single-row angular contact type | Single-row angular contact bearing outer ring | - Bearing steel (GCr15SiMn, general purpose) - Stainless steel (440C, corrosion-resistant) - Ceramic composite (Al₂O₃, lightweight) | GB/T 292 Example: 7005 outer ring, 7210 outer ring | Outer diameter (D): 47 (m6), 80 (h6) Inner raceway diameter (D1): 39 (H7), 69 (H7) Width (B): 13, 16 Contact angle (α): 15°/25°/40° End face parallelism: ±0.003mm (P4) Grade), ±0.006mm (P5 Grade) | Hardness: HRC60-64 (GCr15SiMn), HRC58-62 (440C); Radial dynamic load rating: ±12.8kN (7005), ±32.5kN (7210); Impact resistance: Can withstand 1.2 times the rated static load; Radial clearance: 0.005-0.018mm (C3 Group) | Matches with the inner ring to achieve angular contact, suitable for dusty/humid conditions such as pump and fan shafts | Transition fit with the bearing seat (H7/H6); The ceramic outer ring is 40% lighter than the steel ring, suitable for high-speed noise reduction; extreme pressure grease must be regularly replenished |
| Double-row angular contact bearings | Double-row angular contact bearing inner ring | - Bearing steel (GCr15, heavy load)- Case-hardened steel (20CrNiMoA, high impact)- Stainless steel (316L, low corrosion) | GB/T 292 example: 3206 inner ring, 3312 inner ring | Inner diameter (d): 30 (G5), 60 (k5) Double raceway spacing (s): 8 (3206), 15 (3312) Width (B): 20, 31 Contact angle (α): 30° (fixed) Inner hole roundness: ±0.002mm (P4 grade) | Hardness: HRC60-64 (GCr15), HRC58-62 (20CrNiMoA carburized) Axial dynamic load rating: ±28kN (3206), ±95kN (3312) Temperature resistance: ±150°C (GCr15), ±200°C (20CrNiMoA) Wear loss: ±0.003mm/100h (oil lubrication) | Heavy-duty bidirectional axial load scenarios, such as compressor main shafts and crane drum shafts | Interference fit with the shaft (H7/u6); carburized layer depth 1.0-1.5mm (20CrNiMoA); double raceway coaxiality must be guaranteed within 0.003mm |
| Double-row angular contact bearings | Double-row angular contact bearing outer ring | - Bearing steel (GCr15, heavy load) - High-temperature bearing steel (GCr15SiMo, high-temperature heavy load) - Stainless steel (440C, corrosion-resistant heavy load) | GB/T 292 example: 3206 outer ring, 3312 Outer Ring | Outer Diameter (D): 62 (m6), 130 (h6); Double Inner Raceway Diameter (D1/D2): 42/48 (3206), 85/95 (3312); Width (B): 20, 31; Contact Angle (α): 30° (fixed); Outer Diameter Roundness: ±0.002mm (P4 Grade) | Hardness: HRC60-64 (GCr15), HRC58-62 (GCr15SiMo) Radial static load rating: ±15kN (3206), ±68kN (3312) Temperature resistance: ±250°C (GCr15SiMo), ±300°C (440°C) Deformation resistance: Elastic deformation ±0.001mm/kN at room temperature | Withstands combined radial and bidirectional axial loads, such as hydraulic motors and ship propulsion shafts | Transition fit with bearing housing (H7/H6); High-temperature grease (such as molybdenum disulfide-based) is required for high-temperature operating conditions; Do not use under extreme unidirectional axial loads |
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