A4812-OH

A4812-OH
A4812-OH

Linear Bearing, Ball Bushing only, Precision Steel, 0.25 in, Closed, Not Self-aligning, Oil Hole, A Grade; Use with 0.25 in Diameter Class S Shaft in end supported applications


  • Precision Steel Ball Bushing bearings offer great improvements in efficiency, productivity, and accuracy over high-friction plain bearings flat-ways.
  • The all-steel design makes the bearing product line perfect for replacing plain bearings in high temperature applications.
  • The steel sleeve anti-friction recirculating ball bushing provides rigid low drag movement – ~100x lower drag coefficient than a plain contact bearing.
  • A coefficient of friction as low as .001. When replacing high friction plain bearings, Precision Steel Ball Bushing Bearings dramatically improve machine productivity and efficiency.
  • For use with S class Shafting.

Dimensions

dimensions
DimensionValue
[d] Shaft, Nominal Diameter0.25 in
[D] Housing Bore recommended for Press Fit housing0.4990 / 0.4995 in 
[D] Recommended Housing Bore0.5000 / 0.5005 in 
[D], Nominal0.5 in

Specifications

SpecificationsValue
Adjustable/Not AdjustableNot Adjustable 
Closed/OpenClosed 
GradeA Grade 
MaterialSteel 
Number of Ball Circuits
Oil HoleOil Hole 
Self AlignmentNot Self-aligning 
Temperature Max500 °F
Use with shafting ClassClass S 
Weight0.02 lb

Performance

performance graphic
performance graphic
performance graphic
PerformanceValue
Load Capacity, Dynamic19 lbf

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