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Super Precision Angular Contact Ball Bearings 71948 ACD/P4AQBCB

Super Precision Angular Contact Ball Bearings 71948 ACD/P4AQBCB

The 71948 ACD/P4AQBCB is a super precision angular contact ball bearing with a 240mm bore and 320mm outer diameter, crafted from high-grade chrome steel. It handles radial loads up to 128700 lbf and operates smoothly at speeds up to 7500 RPM.

With a 25° contact angle and light preload, it offers excellent stability for precision applications. The phenolic cage ensures quiet and efficient performance, even under heavy loads.

This set includes four matched bearings, ideal for high-accuracy machinery like CNC spindles or grinding equipment. It works reliably in temperatures from -30°C to 110°C.

Weighing 34kg, it’s a robust choice for industrial use. Compliant with P4A tolerance standards, it’s interchangeable with SKF bearings for easy replacement.

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Product Parameters

  • Part Number 71948 ACD/P4AQBCB
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 240 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 320 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 152 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 25.4 mm
  • Ball Qty 31
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 4 bearings <<>> QBC
  • Number Of Bearings In Matched Set 4
  • Universal Matching Bearing No
  • Preload Light / Class B
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 128700 lbf
  • Static Radial Load 274500 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 7500 rpm
  • Weight 34 kg
Super Precision Angular Contact Ball Bearings 71948 ACD/P4AQBCB dimension drawing
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Features

Performance Features of 71948 ACD/P4AQBCB Bearing

71948 ACD/P4AQBCB Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls provide strength and durability under high radial loads.

The phenolic cage ensures smooth operation and reduces friction, enhancing efficiency.
With a dynamic radial load capacity of 128,700 lbf, it handles demanding conditions reliably.

71948 ACD/P4AQBCB Bearing operates efficiently at speeds up to 7,500 rpm.
Its precision P4A tolerance class ensures consistent performance in high-accuracy applications.

The matched arrangement of four bearings offers balanced load distribution.
This design reduces wear and extends the service life of the bearing set.

71948 ACD/P4AQBCB Bearing works in temperatures from -30°C to 110°C.
Its robust construction ensures reliability in varied operating environments.

Application

Industrial Uses of 71948 ACD/P4AQBCB Bearing
71948 ACD/P4AQBCB Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The matched set of four bearings provides excellent stability for heavy cutting operations.

In aerospace applications, 71948 ACD/P4AQBCB Bearing handles the demanding loads of helicopter rotor systems. Its phenolic cage offers lightweight durability, ideal for reducing overall component weight.

For automation systems, 71948 ACD/P4AQBCB Bearing supports robotic arms requiring smooth, precise movement. The P4A tolerance class ensures minimal vibration during high-speed operations.

Medical imaging devices benefit from 71948 ACD/P4AQBCB Bearing’s consistent performance in CT scanners. The chrome steel construction maintains reliability under continuous use.

In wind turbines, 71948 ACD/P4AQBCB Bearing manages radial and axial loads in gearbox systems. Its lubricated design reduces maintenance needs in harsh outdoor conditions.

Q&A

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