Super Thin Section Angular Contact Ball Bearings

CHG super thin section sngular contact ball bearings use a type A raceway geometry with a reduced shoulder on one side of the inner or outer ring. This geometry allows a larger ball complement within an exceptionally small cross section, supporting radial load and axial load in one direction.

The cross section remains nearly constant as bore diameter increases, helping designers enlarge hollow shafts or cable passages without a proportional increase in bearing envelope and mass. For axial loads in both directions, two bearings should be mounted as a matched pair.

Design Features and Benefits

2.5 mm ultra-slim width reduces axial installation space and total mechanism weight.

Large bore-to-section ratio supports hollow-shaft, cable-routing and compact motion-control designs.

Type A geometry carries combined radial and one-direction axial loads; paired sets provide bidirectional axial positioning.

Stainless-steel rings and balls improve corrosion resistance in moisture and selected clean environments.

Low mass and low rotational inertia support sensitive positioning and intermittent motion.

Custom preload, clearance, precision, lubricant and hybrid ceramic-ball options are available after application review.

Load Direction and Bearing Arrangement

A single Type A bearing supports axial load in one direction only. The bearing requires an applied thrust component to establish the intended contact condition. Where reversing axial load, moment rigidity or controlled axial position is required, use a paired arrangement selected according to the application.

Robotic joints, end-effectors and compact rotary axes

Satellite mechanisms, optical payloads and camera gimbals

Inspection, measuring and precision positioning equipment

Medical instruments and compact diagnostic mechanisms

Semiconductor and clean motion-control modules

Light and medium duty mechanisms with slow or intermittent rotation

Application boundary

This series is intended primarily for precision positioning and light-to-medium duty mechanisms. Continuous high-speed, shock-load, vacuum, extreme-temperature or high-cycle applications require a dedicated engineering review.

Selection and Installation Guidelines

Define radial load, axial load direction, overturning moment, duty cycle and target life.

Select single, back-to-back, face-to-face or tandem arrangement according to load direction and rigidity.Control shaft and housing roundness, flatness and fit; thin rings are sensitive to mounting distortion.Apply mounting force only to the ring being fitted; never transmit force through the balls.

Specify lubricant, operating temperature, cleanliness, corrosion exposure and relubrication strategy.

Confirm preload or clearance after the actual shaft, housing and temperature effects are considered.

Customization and Engineering Support

Dimensional customization and non-standard ring geometry

Precision class, preload and internal clearance selection

Stainless-steel or hybrid ceramic-ball configurations

Special lubricants for low torque, clean, vacuum or temperature requirements

Application calculations, drawings, inspection reports and material certificates

CHG Bearing combines manufacturing in Luoyang with application engineering and customized bearing development. Before quotation, our engineers can review the installation envelope, load spectrum, speed, accuracy, environment and expected service life.

Information Required for Quotation

Bearing model or required d × D × B

Radial/axial load, moment and load direction

Speed, duty cycle and expected life

Accuracy, runout, preload or clearance requirement

Temperature, lubricant, cleanliness and corrosion conditions

Quantity, destination country and required delivery date