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Super Precision Angular Contact Ball Bearings 71908 ACD/P4ATBTC

Super Precision Angular Contact Ball Bearings 71908 ACD/P4ATBTC

The 71908 ACD/P4ATBTC 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 operates smoothly at speeds up to 41,000 RPM.

Its 25° contact angle and matched set of three bearings provide excellent stability for angular loads. The phenolic cage ensures quiet, long-lasting performance even under moderate preload.

This open-design bearing comes pre-lubricated for immediate use and works in temperatures from -30°C to 110°C. Ideal for high-precision applications like machine tool spindles or high-speed rotary systems.

Weighing 0.33kg, it meets P4A tolerance standards for exceptional accuracy. The set is not universally matchable, making proper installation crucial for optimal performance.

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Product Parameters

  • Part Number 71908 ACD/P4ATBTC
  • 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 Moderate / Class C
  • 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/P4ATBTC dimension drawing
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Features

Performance Features of 71908 ACD/P4ATBTC Bearing

71908 ACD/P4ATBTC Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls enhance durability, while the phenolic cage ensures smooth operation at high speeds.

The bearing’s dynamic radial load capacity of 5648 lbf makes it suitable for demanding tasks.
With a maximum speed of 41,000 rpm, it balances performance and reliability in precision applications.

71908 ACD/P4ATBTC Bearing operates efficiently in temperatures ranging from -30°C to 110°C.
Its moderate preload (Class C) ensures consistent performance without excessive friction.

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

Lubrication is pre-applied, simplifying initial installation and reducing maintenance needs.
The P4A tolerance class guarantees precision fit and reliable operation in critical machinery.

Application

Industrial Uses of 71908 ACD/P4ATBTC Bearing
71908 ACD/P4ATBTC Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The matched arrangement of three bearings provides stability in demanding industrial environments.

In automotive applications, 71908 ACD/P4ATBTC Bearing supports high-speed components like turbochargers and transmission systems. Its moderate preload and phenolic cage make it suitable for both performance and durability.

For robotics, 71908 ACD/P4ATBTC Bearing excels in articulated arms and precision movement systems. The P4A tolerance class ensures minimal vibration, crucial for smooth robotic operations.

Medical imaging devices benefit from 71908 ACD/P4ATBTC Bearing’s reliable performance and low friction. The chrome steel construction maintains precision even under continuous use in scanners and diagnostic equipment.

In automation systems, 71908 ACD/P4ATBTC Bearing is ideal for high-speed conveyor belts and sorting mechanisms. Its open design allows for easy lubrication, extending service life in busy production lines.

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