Manufactured by CHG Bearing, the 77.7*92.808 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.
77.7*92.808 - Tapered Rollers
Technical Specifications
| Overview | |
|---|---|
| Part Number | 77.7*92.808 |
| Brand | CHG® |
| Product Type | Tapered Roller |
| Taper Angle | 4°2' |
| Dimensions | |
| Roller Length, Lw | 92.808 mm |
| Center Recess Diameter | 30 mm |
| Through-hole Diameter | 17.5 mm |
| Center Recess Depth | 2 mm |
| Large-end Diameter, Dw | 77.7 mm |
| Spherical End Radius, SR | 551 mm |
| Through-hole Chamfer | - mm |
| Large-end Diameter Tolerance | -0.05 to 0 mm |
| Through-hole Coaxiality | 0.08 mm |
| Rolling Surface Roughness, Ra (µm) | 0.25 |
| Axial Chamfer — Large End | 2 mm |
| Axial Chamfer Tolerance — Large End | -0.7 to +0.7 mm |
| Radial Chamfer — Large End | 1.5 mm |
| Radial Chamfer Tolerance — Large End | -0.5 to +0.5 mm |
| Axial Chamfer — Small End | 1.5 mm |
| Axial Chamfer Tolerance — Small End | -0.5 to +0.5 mm |
| Radial Chamfer — Small End | 2 mm |
| Radial Chamfer Tolerance — Small End | -0.7 to +0.7 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 | ±0.005 mm |
| Roundness | 0.003 mm |
| Ovality | 0.003 mm |
77.7*92.808 77.7 mm 92.808 mm 551 mm Frequently Asked Questions about 77.7*92.808 Tapered Rollers
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 77.7*92.808. Standard catalog sizes are stocked for rapid 3–7 day dispatch, while high-volume OEM production runs typically dispatch within 30–45 days.
Sourcing 77.7*92.808 directly from CHG Bearing eliminates intermediate brokerage markups while granting you factory-direct engineering backup, rigorous ISO-certified quality assurance, competitive volume wholesale pricing, and dependable supply chain stability for Tapered Rollers.
In its sealed configuration (Open Type), CHG Bearing pre-charges 77.7*92.808 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.
The CHG Bearing 77.7*92.808 is rated for limiting speeds up to standard rated RPM under forced oil-mist or circulating oil lubrication regimes. When lubricated with factory-filled synthetic high-speed grease, safe continuous velocity is maintained at approximately 75% to 85% of the maximum nominal limit, preventing thermal runaway.
