Manufactured by CHG Bearing, the 2TR780 is a precision Double Row Tapered Roller Bearings. Key dimensional parameters include a 780 mm bore diameter, a 1150 mm outer diameter, and a 330 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.
2TR780 - Double Row Tapered Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 2TR780 |
| Brand | CHG® |
| Bearing | Double Row Tapered Roller Bearing |
| Characteristics | |
| Series | 350000 |
| Number of Rows | Double Row |
| Tolerance Class | Class 4 |
| Dimensions | |
| Bore Diameter (d) | 780 mm |
| Width (B) | 330 mm |
| Outer Diameter (D) | 1150 mm |
| Bore Diameter Tolerance | 0 – +0.025 mm |
| Outside Diameter Tolerance | 0 – +0.051 mm |
| Inner Ring Chamfer | 3.2 mm |
| Outer Ring Chamfer | 1.6 mm |
| Inner Ring Assembly Width Tolerance | -0.508 – +0.711 mm |
| Outer Ring Assembly Width | 136.525 mm |
| Outer Ring Assembly Width Tolerance | -0.508 – +0.711 mm |
| Shaft Abutment Diameter | 214 mm |
| Housing Abutment Diameter | 334 mm |
| Lubrication Hole Diameter | 6 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 1610 kN |
| Basic Static Load Rating C0 (kN) | 2920 kN |
| Material | |
| Mass (kg) | 80.1 kg |
| Ring Material | Bearing Steel |
| Cage Material | 08Al Steel / Grade 10 Steel |
| Lubrication Groove Width | 12 mm |
| Roller Material | Bearing Steel |
2TR780 1150 mm 780 mm Frequently Asked Questions about 2TR780 Double Row Tapered Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
In its sealed configuration (Open Type), CHG Bearing pre-charges 2TR780 with premium wide-temperature lithium-complex or polyurea grease, calibrated to a 30%–35% cavity volume ratio. For open-type variants, synthetic PAO or refined mineral lubricating oils with appropriate EP (Extreme Pressure) additives should be circulated.
Yes, 100% of 2TR780 Double Row Tapered Roller 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.
Model 2TR780 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 780 mm) and steep thermal gradients between inner and outer rings.
To safeguard CHG Bearing 2TR780 against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (780 mm x 1150 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
