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Super Precision Angular Contact Ball Bearings 71909 ACB/P4A

Super Precision Angular Contact Ball Bearings 71909 ACB/P4A

The 71909 ACB/P4A is a super precision angular contact ball bearing with a 45mm bore and 68mm outer diameter, crafted from high-quality chrome steel. Its 25° contact angle efficiently manages combined radial and axial loads, making it versatile for demanding setups.

This bearing spins smoothly at speeds up to 38,000 RPM and handles dynamic radial loads of 1580 lbf. The phenolic cage ensures quiet operation and durability, while the open design allows for easy lubrication.

Precision-machined to P4 (ABEC-7) standards, it offers excellent accuracy for high-performance applications. Matched arrangements are available for enhanced stability in paired setups.

Ideal for machine tools, spindles, or high-speed robotics where precision and reliability are key. Weighing just 0.13kg, it’s lightweight yet robust for its size. Suitable for temperatures from -30°C to 110°C.

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Product Parameters

  • Part Number 71909 ACB/P4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 45 mm
  • Bore Dia Tolerance -0.006mm to 0
  • Outer Dia 68 mm
  • Outer Dia Tolerance -0.007mm to 0
  • Width 12 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 4.762 mm
  • Ball Qty 27
  • Contact Angle 25°
  • Tolerance Class P4 (ABEC-7)
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement Available
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 1580 lbf
  • Static Radial Load 1238 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 38000 rpm
  • Weight 0.13 kg
  • Price（$） 324.72
Super Precision Angular Contact Ball Bearings 71909 ACB/P4A dimension drawing
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Features

Why Choose 71909 ACB/P4A Bearing for Precision Tasks?

71909 ACB/P4A Bearing features a 25° contact angle, optimised for high-precision angular contact applications.
Its chrome steel construction ensures durability and consistent performance under radial loads up to 1580 lbf.
The phenolic cage maintains ball alignment, reducing friction and enhancing speed capabilities up to 38,000 rpm.
With a P4 tolerance class, it delivers exceptional accuracy for demanding industrial uses.

Application

Key Fields for 71909 ACB/P4A Bearing
71909 ACB/P4A Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The phenolic cage reduces friction, making it suitable for high-speed operations.

In robotics, 71909 ACB/P4A Bearing provides smooth movement for articulated arms, thanks to its 25° contact angle. Its P4 tolerance class guarantees consistent performance in repetitive tasks.

For aerospace applications, 71909 ACB/P4A Bearing handles both radial and axial loads in components like landing gear systems. The chrome steel construction offers durability in demanding conditions.

Medical imaging devices benefit from 71909 ACB/P4A Bearing’s low vibration and high-speed capabilities. Its lubricated design ensures quiet operation, crucial for sensitive equipment.

In automotive transmissions, 71909 ACB/P4A Bearing supports smooth gear shifts with its precise load handling. The metric sizing makes it compatible with various vehicle models.

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