A4812-NBA

A4812-NBA
Precision Bearings

Precision, Steel Ball Bushing Bearing, 0.250 in, Not Self-Aligning, Closed, Not Corrosion Resistant

Lead Time:  Next Day Lead times may increase with higher quantities. Lead time displayed in business days.

  • 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.

Dimensions

Dimensions
Dimension Value
C 19.05 mm (0.750 in)
C1 13.08 mm (0.515 in)
C2 0.99 mm (0.039 in)
d 6.35 mm (0.250 in)
D 12.70 mm (0.500 in)

Specifications

Specification Value
Adjustable/Not Adjustable Not Adjustable
Closed/Open Closed
Number of Ball Circuits 3
Nylon Ball or Alternating Nylon Ball Alternating Nylon Balls
Roll Pack No Roll Pack
Food Grade Rated Not Food Grade
Self Alignment Not self-aligning
Single/Twin Single
Temperature Max 85 °C / 185 °F
Use with shafting class S
Wipers, Seals
Weight 0.009 kg / 0.02 lbs
Nominal Diameter 6.350 mm / 0.25 in
Outer Diameter 12.700 mm / 0.5 in
Length 19.050 mm / 0.75 in

Performance

Performance
Performance
Performance
Performance Value
Load Capacity, Dynamic 42.258 N / 9.5 lbf

Get Quote

*Please fill out the information below so we can best assist you:

Would you like to receive periodic Thomson email updates including application stories, online training opportunities, new product information and links to online design tools?