Skip to content Skip to navigation
Miniature Instrument Ball Bushing Bearings

Miniature Instrument Ball Bushing Bearings

Accuracy level and compact size make the Miniature Instrument bearing ideal for small mechanisms or devices that require high repeatability and responsiveness. When replacing high friction plain bearings, Instrument bearings consistantly low coefficient of friction eliminates stick-slip and provides smooth linear performance. Each Instrument bearing can be provided with a matched 60 Case LinearRace shafting for minimum fit-up, optimizing system performance and accuracy.

Overview

Miniature Instrument Ball Bushing Specifications:

Miniature Instrument
Ball Bushing Bearing
Working Bore
Diameter (in)
60 Case
LinearRace
Part Number
LinearRace
Max Length (in)
Dynamic(1) Load
Capacity (lbf)
INST 258-SS  .1250 / .1247  LRI 2  12  7
INST 369-SS  .1875 / .1872  LRI 3  12  9
INST 4812-SS  .2500 / .2497  LRI 4  12  19
Miniature Instrument
Ball Bushing Bearing
& LinearRace Sets
 Nominal
Diameter (in)
 Outside
Diameter (in)
 Ball Bushing
Bearing
Length (in)
 Number of
Ball Circuits
INST 2 MS1  .1250  .3125 / .3121  .500 / .485  3
 INST 3 MS1  .1875  .3750 / .3746  .562 / .547  3
 INST 4 MS1  .2500  .5000 / .4996  .750 / .735  3
(1)Dynamic Load Capacity is based on a rated travel life of 2 million inches. The actual Dynamic Load Capacity can be affected by the orientation of the bearing or the direction of the applied load.

Miniature Instrument Ball Bushing Highlights:

  • Available with a matched 60 Case LinearRace
  • Coefficient of friction as low as .001
  • Available sizes 1/8, 3/16, and 1/4" bore diameter
  • Compact size for low inertia and weight
  • Load Capacity range between 7 and 19lbs
  • Precision bearing balls, sleeve and 60 Case LinearRace manufactured of corrosion resistant stainless steel

CAD Models

To download the models below, you will need to sign in.

Sign In to Download CAD Models

back to top