+86 15806631151 [email protected]
TFL BEARINGS
REQUEST A QUOTE
Super Precision Angular Contact Ball Bearings 71938 ACD/P4ADBA

Super Precision Angular Contact Ball Bearings 71938 ACD/P4ADBA

The 71938 ACD/P4ADBA is a super precision angular contact ball bearing with a 190mm bore and 260mm outer diameter, designed for high-performance applications. Its 25° contact angle and matched arrangement (2 bearings DB) ensure smooth handling of combined radial and axial loads.

Made from durable chrome steel with a phenolic cage, it supports dynamic radial loads up to 58500 lbf and spins at speeds up to 11000 RPM. The extra light preload (Class A) minimises friction, enhancing efficiency.

This open-type bearing is lubricated for easy maintenance and operates in temperatures from -30°C to 110°C. Ideal for machine tools or high-speed spindles where precision is critical.

Weighing 8.7kg, it meets P4A tolerance standards for unmatched accuracy. Compatible with SKF bearings, making replacements straightforward.

Get A Free Quote
    Description Features Application Q&A Featured Products Our Process

Product Parameters

  • Part Number 71938 ACD/P4ADBA
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 190 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 260 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 66 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 22.225 mm
  • Ball Qty 28
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 2 bearings <> DB
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing No
  • Preload Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 58500 lbf
  • Static Radial Load 93375 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 11000 rpm
  • Weight 8.7 kg
Super Precision Angular Contact Ball Bearings 71938 ACD/P4ADBA dimension drawing
Download DWG Download PDF

Features

Performance Features of 71938 ACD/P4ADBA Bearing

71938 ACD/P4ADBA Bearing is designed with a 25° contact angle, optimising load distribution for precision applications.
Its chrome steel rings and balls ensure durability, while the phenolic cage reduces friction for smoother operation.

The matched arrangement of two bearings enhances stability, making it suitable for high-speed use up to 11,000 rpm.
With a dynamic radial load capacity of 58,500 lbf, it handles demanding conditions reliably.

71938 ACD/P4ADBA Bearing operates efficiently in temperatures ranging from -30°C to 110°C.
Its extra light preload (Class A) ensures minimal resistance, improving performance in precision tasks.

Application

Industrial Uses of 71938 ACD/P4ADBA Bearing
71938 ACD/P4ADBA Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The extra light preload makes it suitable for applications demanding minimal friction and high-speed operation.

In aerospace components, 71938 ACD/P4ADBA Bearing provides reliable performance in gearbox systems, thanks to its phenolic cage and chrome steel construction. The matched arrangement of two bearings enhances stability under heavy radial loads.

For automation systems, 71938 ACD/P4ADBA Bearing supports robotic arms and CNC machinery, where its P4A tolerance class guarantees consistent precision. The open seal design allows for easy lubrication, extending service life in continuous operation.

Medical imaging devices benefit from 71938 ACD/P4ADBA Bearing’s smooth operation and low vibration, crucial for maintaining image clarity. Its temperature range also ensures reliability in various clinical environments.

In electric vehicle drivetrains, 71938 ACD/P4ADBA Bearing handles angular loads efficiently, contributing to quieter and more efficient motor performance. The metric sizing ensures compatibility with a wide range of European and Asian automotive designs.

Q&A

SEND INQUIRY