Manufactured by CHG Bearing, the 31976X2 is a precision Single Row Tapered Roller Bearings. Key dimensional parameters include a 380 mm bore diameter, a 520 mm outer diameter, and a 66.5 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.
31976X2 - Single Row Tapered Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 31976X2 |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Single Row Tapered Roller Bearing |
| Number of Rows | Single Row |
| Tolerance Class | P5 |
| Dimensions | |
| Bore Diameter (d) | 380 mm |
| Width (B) | 66.5 mm |
| Outer Diameter (D) | 520 mm |
| Outer Ring Width C | 46.5 mm |
| Bore Diameter Tolerance | -0.030 – 0 mm |
| Outside Diameter Tolerance | -0.038 – 0 mm |
| Inner Ring Chamfer | 3.7 min mm |
| Outer Ring Chamfer | 3.7 min mm |
| Shaft Abutment Diameter | 402 mm |
| Housing Abutment Diameter | 486 mm |
| Overall Bearing Width Tolerance | -0.40 – +0.40 mm |
| Inner Ring Width B | 65 mm |
| Inner Ring Width Tolerance | -0.80 – 0 mm |
| Outer Ring Width Tolerance | -0.80 – 0 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 984 kN |
| Basic Static Load Rating C0 (kN) | 1930 kN |
| Material | |
| Mass (kg) | 37.3 kg |
| Ring Material | Case-Hardened Steel / Bearing Steel |
| Rolling Element Material | Case-Hardened Steel / Bearing Steel |
| Cage Material | 08Al Steel |
31976X2 520 mm 380 mm 66.5 mm Frequently Asked Questions about 31976X2 Single Row Tapered Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Quality starts with raw material selection: CHG Bearing crafts 31976X2 inner and outer rings from high-purity High-Quality Chrome Steel (GCr15/100Cr6). Our raw billets undergo vacuum degassing and secondary ESR (electroslag remelting) processes to drastically eliminate non-metallic sulfide and oxide inclusions, elevating subsurface contact fatigue resistance.
Following standard ISO 281 fatigue calculation guidelines, the nominal rating life (L10) of CHG Bearing 31976X2 correlates its dynamic capacity (standard dynamic) with equivalent dynamic loads. In controlled industrial settings with proper contamination-free filtration, field data confirms continuous operational longevity exceeding 20,000 to 50,000 service hours.
Absolutely. The CHG Bearing 31976X2 Single Row Tapered Roller Bearings is a 1:1 direct interchange for renowned brands, matching part numbers: SKF 31976X2, FAG 31976X2, NSK 31976X2. It shares identical envelope boundary dimensions, load capacities, and shaft fits, allowing instant drop-in replacement without retrofitting your machinery.
Built for demanding industrial environments, the 31976X2 Single Row Tapered Roller Bearings by CHG Bearing boasts a dynamic load rating (Cr) of standard dynamic and a static load threshold (C0r) of standard static. The optimized internal raceway geometry balances stress distribution, mitigating edge loading even when operating under peak mechanical stresses.
