Manufactured by CHG Bearing, the 77.5*83.966 is a precision Tapered Rollers. Key dimensional parameters include a mm bore diameter, a mm outer diameter, and a 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.
77.5*83.966 - Tapered Rollers
Technical Specifications
| Overview | |
|---|---|
| Part Number | 77.5*83.966 |
| Brand | CHG® |
| Product Type | Tapered Roller |
| Taper Angle | 4°20' |
| Dimensions | |
| Roller Length, Lw | 83.966 mm |
| Center Recess Diameter | 30 mm |
| Through-hole Diameter | 16 mm |
| Center Recess Depth | 2.5 mm |
| Large-end Diameter, Dw | 77.5 mm |
| Spherical End Radius, SR | 511 mm |
| Through-hole Chamfer | - mm |
| Large-end Diameter Tolerance | -0.02 to +0.04 mm |
| Through-hole Coaxiality | 0.1 mm |
| Rolling Surface Roughness, Ra (µm) | 0.25 |
| Axial Chamfer — Large End | 2 mm |
| Axial Chamfer Tolerance — Large End | -0.2 to +0.2 mm |
| Radial Chamfer — Large End | 1.5 mm |
| Radial Chamfer Tolerance — Large End | -0.2 to +0.2 mm |
| Axial Chamfer — Small End | 1.5 mm |
| Axial Chamfer Tolerance — Small End | -0.2 to +0.2 mm |
| Radial Chamfer — Small End | 2 mm |
| Radial Chamfer Tolerance — Small End | -0.2 to +0.2 mm |
| Performance | |
| Spherical End Surface Roughness, Ra (µm) | 0.32 µm |
| Dimensional & Geometrical Accuracy | |
| Roller Length Tolerance | -0.5 to 0 mm |
| End-face Runout | - mm |
| Diameter Variation Between Ends | ±0.004 mm |
| Roundness | 0.003 mm |
| Ovality | 0.003 mm |
77.5*83.966 77.5 mm 83.966 mm 511 mm Frequently Asked Questions about 77.5*83.966 Tapered Rollers
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
To safeguard CHG Bearing 77.5*83.966 against fretting wear and false brinelling during transport or vibration, assemble mating surfaces ( mm x mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
Absolutely. The CHG Bearing 77.5*83.966 Tapered Rollers is a 1:1 direct interchange for renowned brands, matching part numbers: SKF 77.5*83.966, FAG 77.5*83.966, NSK 77.5*83.966. It shares identical envelope boundary dimensions, load capacities, and shaft fits, allowing instant drop-in replacement without retrofitting your machinery.
Yes, 100% of 77.5*83.966 Tapered Rollers 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.
For international ocean and air freight, CHG Bearing packs 77.5*83.966 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.
