Manufactured by CHG Bearing, the 3811/750/YA1 is a precision Four-Row Tapered Roller Bearings. Key dimensional parameters include a 750 mm bore diameter, a 1220 mm outer diameter, and a 840 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.
3811/750/YA1 - Four-Row Tapered Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 3811/750/YA1 |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Four Row Tapered Roller Bearing |
| Number of Rows | Four Row |
| Tolerance Class | P0 |
| Dimensions | |
| Bore Diameter (d) | 750 mm |
| Width (B) | 840 mm |
| Outer Diameter (D) | 1220 mm |
| Bore Diameter Tolerance | -0.075 – 0 mm |
| Outside Diameter Tolerance | -0.125 – 0 mm |
| Inner Ring Chamfer | 8 min mm |
| Outer Ring Chamfer | 6 min mm |
| Inner Ring Assembly Width Tolerance | -1.5 – +1.5 mm |
| Outer Ring Assembly Width | 840 mm |
| Outer Ring Assembly Width Tolerance | -1.5 – +1.5 mm |
| Shaft Abutment Diameter | 807 mm |
| Housing Abutment Diameter | 1130 mm |
| Lubrication Hole Diameter | 14 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 18590 kN |
| Basic Static Load Rating C0 (kN) | 41470 kN |
| Material | |
| Mass (kg) | 3994 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 | 35 mm |
3811/750/YA1 1220 mm 750 mm 840 mm Frequently Asked Questions about 3811/750/YA1 Four-Row Tapered Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
As a primary manufacturer, CHG Bearing supports both trial batch evaluations and container-load supply for 3811/750/YA1. Standard catalog sizes are stocked for rapid 3–7 day dispatch, while high-volume OEM production runs typically dispatch within 30–45 days.
To safeguard CHG Bearing 3811/750/YA1 against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (750 mm x 1220 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
Absolutely. The CHG Bearing 3811/750/YA1 Four-Row Tapered Roller Bearings is a 1:1 direct interchange for renowned brands, matching part numbers: SKF 3811/750/YA1, FAG 3811/750/YA1, NSK 3811/750/YA1. It shares identical envelope boundary dimensions, load capacities, and shaft fits, allowing instant drop-in replacement without retrofitting your machinery.
Following standard ISO 281 fatigue calculation guidelines, the nominal rating life (L10) of CHG Bearing 3811/750/YA1 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.
