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Super Precision Angular Contact Ball Bearings 71908 ACD/P4ATBTB

Super Precision Angular Contact Ball Bearings 71908 ACD/P4ATBTB

The 71908 ACD/P4ATBTB is a super precision angular contact ball bearing with a 40mm bore and 62mm outer diameter, crafted from durable chrome steel. It handles radial loads up to 5648 lbf and spins smoothly at speeds up to 41,000 RPM.

Its 25° contact angle and matched set of three bearings provide stable performance under angular loads. The phenolic cage ensures quiet operation and long service life.

This bearing is preloaded for light use, making it ideal for high-precision applications like machine tool spindles or robotics. It operates well in temperatures from -30°C to 110°C.

Weighing just 0.33kg, it’s a lightweight yet robust choice for demanding environments. Compliant with P4A tolerance standards for exceptional accuracy.

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Product Parameters

  • Part Number 71908 ACD/P4ATBTB
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 40 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 62 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 36 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 6.35 mm
  • Ball Qty 21
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 3 bearings <>> TBT
  • Number Of Bearings In Matched Set 3
  • 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 5648 lbf
  • Static Radial Load 5400 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 41000 rpm
  • Weight 0.33 kg
Super Precision Angular Contact Ball Bearings 71908 ACD/P4ATBTB dimension drawing
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Features

Performance Features of 71908 ACD/P4ATBTB Bearing

71908 ACD/P4ATBTB Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls ensure durability and consistent performance under dynamic radial loads up to 5648 lbf.

The phenolic cage maintains ball alignment, reducing friction and enhancing operational smoothness.
With a maximum speed of 41,000 rpm, it excels in high-speed precision tasks.

71908 ACD/P4ATBTB Bearing operates efficiently in temperatures ranging from -30°C to 110°C.
Its light preload and P4A tolerance class ensure precise and reliable performance.

The matched arrangement of three bearings (TBT) provides stability in demanding applications.
This design reduces vibration and improves overall system accuracy.

Maintenance is simplified thanks to the pre-lubricated design of 71908 ACD/P4ATBTB Bearing.
Its open seal type allows for easy inspection and re-lubrication when needed.

Application

Common Applications of 71908 ACD/P4ATBTB Bearing
71908 ACD/P4ATBTB Bearing is widely used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The matched set of three bearings provides stability for demanding operations like milling and grinding.

In robotics, 71908 ACD/P4ATBTB Bearing supports articulated arms, offering smooth movement and low friction. Its phenolic cage reduces vibration, making it ideal for repetitive tasks in automated assembly lines.

For medical imaging devices, 71908 ACD/P4ATBTB Bearing’s P4A tolerance class delivers the precision needed for clear scans. The chrome steel construction ensures long-term reliability in critical healthcare environments.

Automotive enthusiasts appreciate 71908 ACD/P4ATBTB Bearing in performance gearboxes, where its light preload enhances shifting responsiveness. The metric sizing fits seamlessly into European and Asian transmission designs.

In 3D printing, 71908 ACD/P4ATBTB Bearing’s high-speed capability ensures precise layer deposition. The open design allows for easy lubrication, extending its lifespan in continuous operation.

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