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BRA - aluminium ball retainer
BRA - aluminium ball retainer
Material Specs
 
BRA - aluminium ball retainer
Metric Size
 
BRA - aluminium ball retainer
Inch Size
    
       
    

 BRA - Aluminium Ball Retainer 

Aluminium Body Retainer + Steel Balls

This is bronze alloy based material, on which the rollers are arranged orderly in certain angle and intervals.
Moreover, the retaining technique is improved that dropping of the rollers can be thoroughly prevented.
The friction is low and can move freely both in redial and in axial directions, and the bearing is in high
precision. This is a young generation of the roller bearing which can roll in high speed, and is used in
rolling frane of cold impact moulds, high precision machine tools and their accessories. 
The steel ball array is mainly divided into two categories: spiral array and straight line array


Features

1. Low Coef Friction
2. Long life span
3. High movement accuracy
4. Be Proper for straight line and spiral movement
5. Fast Movement
                                                                           

Typical Applications

SB-BRA ball retainer is a new generation replacement of guide pin bush. With high speed movement, this is mainly used in high precision punching
tool, high precision machine tool, etc.

Technical Reference

  Max Load Capacity

  30 N/mm2

  Shrink Fit

  0.01 mm ~ 0.02mm

  Max Sliding Speed

  6 m/s

  Coef Friction

  0.01 ~ 0.08 μ

  Rolling Diameter Deviation

  < 0.002 mm

 
Components' Material Specifications
 

  1.Duid Tube: 

  MATERIAL: GCR15 HARDNESS: HRC 62-66

  MEASUREMENT: USING TRADITIONAL MEASUREMENT METHOD
  (O.D.MICROMETER CALIPER, I.D. MICROMETER CALIPER) TO
  MEASURE HOUSING BORE Dh, SHAFT    DIAMETER AND STEEL

  BALL DIAMETER d , REQUESTING df+2d -Dh=0.01-0.02mm

  2. Shaft: 

  MATERIAL: GCr 15 HARDNESS: HRC 62-66 SHAFT DIAMETER

  TOLERANCE: h5. 

  3. Steel Ball: 

  MATERIAL: GCr 15 HARDNESS: HRC 62-66 STEEL BALL

  OUTSIDE DIAMETER TOLERANCE: +0.001/-0.001mm 


Steel Ball Array

SPIRAL ARRAY   STRAIGHT LINE ARRAY
 

Other Ball Retainer Bearings

     

 

 

Aluminium Based Ball Retainers and Guide Rollers

     
Aluminium Ball Retainer
50x80 mm
  Aluminium Guide Roller
38x60 mm
  Ball Retainer - Aluminium based
38x60 mm
  Aluminium based retainers
60x100 mm