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Super Precision Angular Contact Ball Bearings 71908 ACDGA/P4A

Super Precision Angular Contact Ball Bearings 71908 ACDGA/P4A

The 71908 ACDGA/P4A is a super precision angular contact ball bearing with a 40mm bore and 62mm outer diameter, crafted from durable chrome steel. Its compact 12mm width makes it suitable for tight spaces while maintaining high performance.

With a 25° contact angle, it handles both radial and axial loads efficiently, supporting up to 2632 lbf dynamically. It spins smoothly at speeds up to 41,000 RPM, ideal for high-speed applications.

The open design and phenolic cage ensure low friction and easy maintenance. It operates reliably in temperatures from -30°C to 110°C, making it versatile for various environments.

This bearing is part of a universal matching set, allowing flexible arrangements like back-to-back or face-to-face. Perfect for precision machinery, spindles, or tools where accuracy and speed are crucial. Weighing just 0.11kg, it’s lightweight yet robust.

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Product Parameters

  • Part Number 71908 ACDGA/P4A
  • 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 12 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 No
  • Number Of Bearings In Matched Set 3
  • 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 2632 lbf
  • Static Radial Load 1800 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 41000 rpm
  • Weight 0.11 kg
  • Price（$） 66.519
Super Precision Angular Contact Ball Bearings 71908 ACDGA/P4A dimension drawing
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Features

Performance Features of 71908 ACDGA/P4A Bearing

71908 ACDGA/P4A Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
The chrome steel construction ensures durability and resistance to wear under dynamic radial loads up to 2632 lbf.

Its phenolic cage maintains ball alignment, reducing friction and enabling smooth operation at speeds up to 41,000 rpm.
The extra light preload (Class A) enhances precision, making it suitable for high-accuracy tasks.

71908 ACDGA/P4A Bearing operates efficiently in temperatures ranging from -30°C to 110°C.
The open design allows for easy lubrication, ensuring consistent performance over time.

With a P4A tolerance class, this bearing meets strict precision standards.
Its universal matching capability supports various configurations (back-to-back, face-to-face, or tandem).

Application

Industrial Uses of 71908 ACDGA/P4A Bearing
71908 ACDGA/P4A Bearing is commonly used in high-speed machine tools, where its precision angular contact design ensures accurate spindle rotation. The phenolic cage reduces friction, making it suitable for continuous operation.

In robotics, 71908 ACDGA/P4A Bearing provides smooth motion control for articulated arms, thanks to its extra light preload and P4A tolerance class. Its compact size fits well in space-constrained robotic joints.

For medical imaging devices, 71908 ACDGA/P4A Bearing’s chrome steel construction offers reliable performance in high-resolution scanners. The open seal type allows for easy lubrication, extending service life in critical applications.

Automotive vs Aerospace: Applications of 71908 ACDGA/P4A Bearing
In automotive systems, 71908 ACDGA/P4A Bearing supports high-speed gearbox components, where its dynamic radial load capacity ensures durability. The metric sizing makes it compatible with various European car models.

Aerospace applications benefit from 71908 ACDGA/P4A Bearing’s lightweight design and precision, ideal for aircraft instrumentation. Its temperature range handles both ground and flight conditions effectively.

Perfect Fit for Automation: 71908 ACDGA/P4A Bearing
71908 ACDGA/P4A Bearing excels in automated production lines, where its tandem arrangement options provide flexibility. The 25° contact angle optimizes load distribution for consistent performance.

Its high max speed capability makes it a reliable choice for CNC machinery, reducing downtime in manufacturing environments. The lubricated design ensures smooth operation even under heavy use.

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