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Super Precision Angular Contact Ball Bearings 71912 ACD/P4AQBCB

Super Precision Angular Contact Ball Bearings 71912 ACD/P4AQBCB

The 71912 ACD/P4AQBCB is a super precision angular contact ball bearing with a 60mm bore and 85mm outer diameter, crafted from high-quality chrome steel. It handles radial loads up to 11115 lbf and operates smoothly at speeds up to 33000 RPM.

Its 25° contact angle and matched set of four bearings provide excellent stability for angular loads. The phenolic cage ensures quiet operation and durability, even under light preload conditions.

This bearing is ideal for high-precision applications like machine tool spindles or robotics, where accuracy and speed are crucial. It works reliably in temperatures from -30°C to 110°C.

Weighing 0.76kg, it’s a robust yet manageable component. Compliant with P4A tolerance standards, it’s interchangeable with SKF bearings for easy replacements. The open design allows for straightforward lubrication and maintenance.

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Product Parameters

  • Part Number 71912 ACD/P4AQBCB
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 60 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 85 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 52 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 7.938 mm
  • Ball Qty 24
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 4 bearings <<>> QBC
  • Number Of Bearings In Matched Set 4
  • Universal Matching Bearing No
  • Preload Light / Class B
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 11115 lbf
  • Static Radial Load 13162 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 33000 rpm
  • Weight 0.76 kg
  • Price（$） 463.41
Super Precision Angular Contact Ball Bearings 71912 ACD/P4AQBCB dimension drawing
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Features

How Does 71912 ACD/P4AQBCB Bearing Achieve Super Precision?

71912 ACD/P4AQBCB Bearing features a 25° contact angle, optimised for high-precision angular contact applications.
Its chrome steel rings and balls ensure durability while maintaining tight tolerances for smooth operation.
With a dynamic radial load capacity of 11115 lbf, it handles demanding tasks with reliability.
The phenolic cage reduces friction and noise, making it suitable for high-speed applications up to 33,000 rpm.

Application

Common Applications of 71912 ACD/P4AQBCB Bearing
71912 ACD/P4AQBCB Bearing is widely used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The light preload and P4A tolerance class make it suitable for applications demanding minimal vibration.

In robotics, 71912 ACD/P4AQBCB Bearing supports articulated arms, providing smooth movement and long service life. The phenolic cage material reduces friction, enhancing efficiency in repetitive motions.

For aerospace components, 71912 ACD/P4AQBCB Bearing handles both radial and axial loads in systems like gyroscopes. Its chrome steel construction offers durability under varying temperatures and speeds.

Medical imaging devices benefit from 71912 ACD/P4AQBCB Bearing’s precision, ensuring stable operation in scanners. The matched set arrangement improves alignment and reduces downtime.

Q&A

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