Steel Angular Contact Ball Bearing 3.15in Bore 4.92in OD 0.87in Length

Overview

This high-precision steel angular contact ball bearing set is engineered for demanding industrial applications requiring rigid axial and radial load support. Featuring a 3.15-inch bore, 4.92-inch outside diameter, and 0.87-inch width, the assembly utilizes premium-grade steel construction to ensure exceptional durability under high-speed rotation. Manufactured to P5 tolerance standards, these bearings deliver superior rotational accuracy and minimized vibration for critical machinery. The optimized internal geometry supports combined loads efficiently, making this three-unit set ideal for precision spindles, gearboxes, and pump systems operating in rigorous environments.

Key Features

P5 precision tolerance class for enhanced rotational accuracy High-grade steel construction for maximum wear resistance Optimized contact angle for superior axial and radial load capacity Low-friction design suitable for high-speed operations Minimal vibration and noise during continuous use Sold as a matched set of three units for balanced performance Rigorous quality control ensuring consistent dimensional stability

Specifications

Bore Diameter: 3.15 in Outside Diameter: 4.92 in Width: 0.87 in

Material

Steel Tolerance Class: P5 Bearing Type: Angular Contact Ball Bearing Quantity per Pack: 3 units Load Direction: Combined Radial and Axial

Applications

CNC machine tool spindles and high-speed milling heads Industrial gearbox assemblies requiring precise shaft alignment High-pressure centrifugal pumps and compressors Precision robotics joints and automation equipment Electric motor shafts operating at elevated speeds Textile machinery rollers and printing press cylinders Aerospace actuation systems requiring reliable load distribution Technical Notes The angular contact design allows this bearing series to accommodate significant axial loads in one direction while simultaneously supporting radial loads. The P5 tolerance rating indicates a higher degree of precision than standard commercial grades, resulting in tighter clearances and improved running characteristics. This level of precision is essential for applications where shaft deflection must be minimized to maintain product quality or process consistency. The steel material provides excellent hardness and fatigue strength, extending service life even under fluctuating load conditions. Proper installation and lubrication are recommended to achieve the full performance potential of these components. This pack contains three individual bearings, allowing for complete replacement of tandem or back-to-back configurations commonly found in spindle arrangements.