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Super Precision Angular Contact Ball Bearings 71812 CD/P4DGA

Super Precision Angular Contact Ball Bearings 71812 CD/P4DGA

The 71812 CD/P4DGA is a super precision angular contact ball bearing with a 60mm bore and 78mm outer diameter, crafted from durable chrome steel. Its 15° contact angle and extra light preload ensure smooth operation under radial loads up to 4972 lbf.

The open design and phenolic cage allow for high-speed performance, reaching up to 33,000 RPM. It comes pre-lubricated for immediate use and handles temperatures from -30°C to 110°C.

This bearing is part of a universal matched set, suitable for back-to-back, face-to-face, or tandem arrangements. Ideal for precision applications like machine tool spindles or high-speed robotics.

Weighing just 0.2kg, it meets P4 tolerance standards for exceptional accuracy. Interchangeable with SKF bearings, making replacements straightforward.

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Product Parameters

  • Part Number 71812 CD/P4DGA
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 60 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 78 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 20 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 5.556 mm
  • Ball Qty 28
  • Contact Angle 15°
  • Tolerance Class P4
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement Universal matching
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing Yes, back-to-back (<>), face-to-face (><) or tandem (>>)
  • Preload Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 4972 lbf
  • Static Radial Load 6412 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 33000 rpm
  • Weight 0.2 kg
Super Precision Angular Contact Ball Bearings 71812 CD/P4DGA dimension drawing
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Features

Performance Features of 71812 CD/P4DGA Bearing

71812 CD/P4DGA Bearing is designed with a 15° contact angle, providing excellent radial and axial load capacity.
Its chrome steel rings and balls ensure durability and smooth operation under high-speed conditions.

The phenolic cage maintains ball alignment, reducing friction and enhancing performance.
With a maximum speed of 33,000 rpm, it is ideal for precision applications requiring high rotational accuracy.

71812 CD/P4DGA Bearing operates efficiently in temperatures ranging from -30°C to 110°C.
Its universal matching design allows flexible arrangement options, including back-to-back and face-to-face configurations.

Application

How Does 71812 CD/P4DGA Bearing Improve Performance?
71812 CD/P4DGA Bearing is widely used in high-speed machine tools, where its precision angular contact design ensures accurate spindle rotation. The universal matching feature allows flexible arrangement for different load requirements.

In robotics, 71812 CD/P4DGA Bearing supports articulated arms, providing smooth movement with minimal friction. Its phenolic cage reduces weight while maintaining stability during rapid directional changes.

For medical imaging devices, 71812 CD/P4DGA Bearing’s P4 tolerance class delivers the consistency needed for clear scans. The chrome steel construction also withstands frequent sterilisation cycles without compromising performance.

Automotive vs Aerospace: Applications of 71812 CD/P4DGA Bearing
In automotive systems, 71812 CD/P4DGA Bearing enhances gearbox efficiency, thanks to its extra-light preload reducing energy loss. The tandem arrangement option accommodates compact designs in modern transmissions.

Aerospace applications benefit from 71812 CD/P4DGA Bearing’s ability to handle combined radial and thrust loads in avionics. Its temperature resilience ensures reliability even during extreme altitude changes.

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