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Super Precision Angular Contact Ball Bearings 71908 ACD/P4ATGB

Super Precision Angular Contact Ball Bearings 71908 ACD/P4ATGB

The 71908 ACD/P4ATGB is a super precision angular contact ball bearing with a 40mm bore and 62mm outer diameter, crafted from high-grade chrome steel. It supports radial loads up to 5648 lbf and operates smoothly at speeds up to 41,000 RPM.

Its 25° contact angle and universal matching design allow flexible arrangements like back-to-back or face-to-face mounting. The phenolic cage ensures quiet, efficient performance even under light preload conditions.

This bearing excels in applications requiring high precision, such as machine tool spindles or high-speed motors. It works reliably in temperatures from -30°C to 110°C.

Weighing 0.33kg, it comes in a matched set of three for balanced performance. Compliant with P4A tolerance standards for exceptional accuracy.

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Product Parameters

  • Part Number 71908 ACD/P4ATGB
  • 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 Universal matching
  • Number Of Bearings In Matched Set 3
  • Universal Matching Bearing Yes, back-to-back (<>), face-to-face (><) or tandem (>>)
  • 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
  • Price（$） 249.777
Super Precision Angular Contact Ball Bearings 71908 ACD/P4ATGB dimension drawing
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Features

Performance Features of 71908 ACD/P4ATGB Bearing

71908 ACD/P4ATGB 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/P4ATGB Bearing operates efficiently within a temperature range of -30°C to 110°C.
Its universal matching capability allows flexible arrangement in back-to-back, face-to-face, or tandem configurations.

The P4A tolerance class ensures high precision, making it suitable for demanding industrial applications.
Light preload (Class B) further enhances its performance in precision machinery.

Application

Common Applications of 71908 ACD/P4ATGB Bearing
71908 ACD/P4ATGB Bearing is widely used in high-speed machine tools, where its 25° contact angle ensures precise radial and axial load handling. The phenolic cage reduces friction, making it ideal for continuous operation.

In robotics, 71908 ACD/P4ATGB Bearing supports articulated arms, providing smooth movement and durability. Its universal matching design allows for flexible configurations in automated systems.

For aerospace applications, 71908 ACD/P4ATGB Bearing’s chrome steel construction offers reliability in components like landing gear systems. The P4A tolerance class ensures consistent performance under demanding conditions.

Where Is 71908 ACD/P4ATGB Bearing Used?
71908 ACD/P4ATGB Bearing is a go-to choice for precision spindles in grinding machines, thanks to its light preload and high-speed capability. The open design simplifies lubrication maintenance.

In medical imaging devices, 71908 ACD/P4ATGB Bearing provides stable rotation for critical components. Its temperature range of -30°C to 110°C ensures reliability in various clinical environments.

Optimized for Performance: 71908 ACD/P4ATGB Bearing
71908 ACD/P4ATGB Bearing excels in CNC lathes, where its dynamic radial load capacity supports heavy cutting operations. The matched set arrangement enhances alignment accuracy.

For electric vehicle motors, 71908 ACD/P4ATGB Bearing reduces energy loss with its low-friction design. The 41,000 rpm max speed makes it suitable for high-performance applications.

Automotive vs Aerospace: Applications of 71908 ACD/P4ATGB Bearing
In automotive transmissions, 71908 ACD/P4ATGB Bearing handles angular loads efficiently, ensuring smooth gear shifts. Its metric sizing fits seamlessly into European and Asian models.

For aerospace actuators, 71908 ACD/P4ATGB Bearing’s phenolic cage withstands high temperatures, making it reliable in flight control systems. The universal matching feature simplifies installation.

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