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Super Precision Angular Contact Ball Bearings 71918 ACD/P4AQBCB

Super Precision Angular Contact Ball Bearings 71918 ACD/P4AQBCB

The 71918 ACD/P4AQBCB is a super precision angular contact ball bearing with a 90mm bore and 125mm outer diameter, crafted from durable chrome steel. It handles radial loads up to 26325 lbf and spins smoothly at speeds up to 15000 RPM.

With a 25° contact angle and light preload, it offers excellent stability for high-precision applications. The phenolic cage ensures quiet operation and long service life.

This set includes four matched bearings (arranged <> QBC) for balanced performance. Ideal for machine tools or spindles where accuracy and speed are crucial.

Weighing 2.2kg, it operates in temperatures from -30°C to 110°C. Compliant with P4A tolerance standards for reliable performance.

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Product Parameters

  • Part Number 71918 ACD/P4AQBCB
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 90 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 125 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 72 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 11.112 mm
  • Ball Qty 26
  • 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 26325 lbf
  • Static Radial Load 43425 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 15000 rpm
  • Weight 2.2 kg
Super Precision Angular Contact Ball Bearings 71918 ACD/P4AQBCB dimension drawing
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Features

Engineered for Precision: 71918 ACD/P4AQBCB Bearing

71918 ACD/P4AQBCB Bearing features a 25° contact angle, optimised for high-precision angular contact applications.
Its chrome steel rings and balls ensure durability, while the phenolic cage reduces friction for smoother operation.

With a dynamic radial load capacity of 26325 lbf, it handles demanding conditions reliably.
The matched arrangement of four bearings provides consistent performance in precision setups.

Designed for speeds up to 15,000 rpm, it balances high performance with stability.
Its P4A tolerance class ensures tight precision, making it suitable for critical applications.

The open design allows for easy lubrication, maintaining efficiency over time.
Operating between -30°C to 110°C, it performs well in varied temperature conditions.

Application

Key Fields for 71918 ACD/P4AQBCB Bearing
71918 ACD/P4AQBCB Bearing is widely used in high-precision machine tools, where its 25° contact angle ensures accurate radial and axial load handling. The matched set of four bearings provides stability in demanding applications like CNC spindles.

In aerospace components, 71918 ACD/P4AQBCB Bearing’s phenolic cage and P4A tolerance class meet strict requirements for reliability. Its lightweight design suits rotor assemblies and landing gear systems.

For automation systems, this bearing’s lubricated design reduces friction in robotic arms and linear guides. The chrome steel construction offers durability in continuous operation environments.

Medical imaging devices benefit from 71918 ACD/P4AQBCB Bearing’s smooth rotation and low vibration. Its precise tolerances ensure consistent performance in sensitive diagnostic equipment.

In electric vehicle motors, the bearing’s high-speed capability (15,000 rpm) supports efficient power transmission. The light preload class minimises energy loss during operation.

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