Manufactured by CHG Bearing, the 381176 is a precision Four-Row Tapered Roller Bearings. Key dimensional parameters include a 380 mm bore diameter, a 620 mm outer diameter, and a 420 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.
381176 - Four-Row Tapered Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 381176 |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Four Row Tapered Roller Bearing |
| Number of Rows | Four Row |
| Tolerance Class | P0 |
| Dimensions | |
| Bore Diameter (d) | 380 mm |
| Width (B) | 420 mm |
| Outer Diameter (D) | 620 mm |
| Bore Diameter Tolerance | -0.040 – 0 mm |
| Outside Diameter Tolerance | -0.050 – 0 mm |
| Inner Ring Chamfer | 5 min mm |
| Outer Ring Chamfer | 4 min mm |
| Inner Ring Assembly Width Tolerance | -0.8 – +0.8 mm |
| Outer Ring Assembly Width | 420 mm |
| Outer Ring Assembly Width Tolerance | -0.8 – +0.8 mm |
| Shaft Abutment Diameter | 405 mm |
| Housing Abutment Diameter | 570 mm |
| Lubrication Hole Diameter | 9 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 5082 kN |
| Basic Static Load Rating C0 (kN) | 9604 kN |
| Material | |
| Mass (kg) | 519 kg |
| Ring Material | Case-Hardened Steel / Bearing Steel |
| Rolling Element Material | Case-Hardened Steel / Bearing Steel |
| Cage Material | Grade 45 Steel / 08Al Steel / Grade 10 Steel |
| Lubrication Groove Width | 20 mm |
381176 620 mm 380 mm 420 mm Frequently Asked Questions about 381176 Four-Row Tapered Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
For international ocean and air freight, CHG Bearing packs 381176 with industrial VCI anti-corrosion barrier wrapping, sealed polybags, individual cartons, and fumigated ocean-worthy wooden crates. This multi-layer barrier guarantees rust-free storage for a minimum shelf life of 24 to 36 months.
Model 381176 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 380 mm) and steep thermal gradients between inner and outer rings.
Engineered according to international ISO boundary plans, CHG Bearing supplies 381176 with a precision bore diameter (d) of 380 mm, an outside diameter (D) of 620 mm, and a nominal ring width (B) of 420 mm. This configuration yields an effective cross-sectional wall thickness of 120.0 mm and an envelope ratio (D/d) of 1.63, delivering compact rigidity for OEM machinery housings.
Quality starts with raw material selection: CHG Bearing crafts 381176 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.
