Manufactured by CHG Bearing, the 47.8*66.1-1 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.
47.8*66.1-1 - Tapered Rollers
Technical Specifications
| Overview | |
|---|---|
| Part Number | 47.8*66.1-1 |
| Brand | CHG® |
| Product Type | Tapered Roller |
| Taper Angle | 1°3' |
| Dimensions | |
| Roller Length, Lw | 66.1 mm |
| Center Recess Diameter | 24 mm |
| Through-hole Diameter | - mm |
| Center Recess Depth | 1.5 mm |
| Large-end Diameter, Dw | 47.8 mm |
| Spherical End Radius, SR | 1239 mm |
| Through-hole Chamfer | - mm |
| Large-end Diameter Tolerance | -0.02 to +0.02 mm |
| Through-hole Coaxiality | - mm |
| Rolling Surface Roughness, Ra (µm) | 0.25 |
| Axial Chamfer — Large End | 1.5 mm |
| Axial Chamfer Tolerance — Large End | -0.5 to +0.5 mm |
| Radial Chamfer — Large End | 1.2 mm |
| Radial Chamfer Tolerance — Large End | -0.4 to +0.4 mm |
| Axial Chamfer — Small End | 1.2 mm |
| Axial Chamfer Tolerance — Small End | -0.4 to +0.4 mm |
| Radial Chamfer — Small End | 1.5 mm |
| Radial Chamfer Tolerance — Small End | -0.5 to +0.5 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 |
47.8*66.1-1 47.8 mm 66.1 mm 1239 mm Frequently Asked Questions about 47.8*66.1-1 Tapered Rollers
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Engineered according to international ISO boundary plans, CHG Bearing supplies 47.8*66.1-1 with a precision bore diameter (d) of mm, an outside diameter (D) of mm, and a nominal ring width (B) of mm. This configuration yields an effective cross-sectional wall thickness of 0 mm and an envelope ratio (D/d) of 0, delivering compact rigidity for OEM machinery housings.
To safeguard CHG Bearing 47.8*66.1-1 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.
The CHG Bearing 47.8*66.1-1 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.
As a primary manufacturer, CHG Bearing supports both trial batch evaluations and container-load supply for 47.8*66.1-1. Standard catalog sizes are stocked for rapid 3–7 day dispatch, while high-volume OEM production runs typically dispatch within 30–45 days.
