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Super Precision Angular Contact Ball Bearings S71924 ACD/P4AQBCB

Super Precision Angular Contact Ball Bearings S71924 ACD/P4AQBCB

The S71924 ACD/P4AQBCB is a super precision angular contact ball bearing with a 120mm bore and 165mm outer diameter, crafted from durable chrome steel. It handles radial loads up to 43875 lbf and operates smoothly at speeds up to 11000 RPM.

Its sealed design keeps grease in and contaminants out, while the phenolic cage ensures quiet, long-lasting performance. The 25° contact angle and light preload make it ideal for high-precision applications.

This set includes four matched bearings (QBC arrangement) for balanced performance. Suitable for machine tools or spindle systems where accuracy and reliability are key.

Weighing 4.84kg, it’s built for stability in temperatures from -30°C to 110°C. Compliant with P4A tolerance standards for consistent performance.

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Product Parameters

  • Part Number S71924 ACD/P4AQBCB
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 120 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 165 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 88 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 14.288 mm
  • Ball Qty 28
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Sealed
  • 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 43875 lbf
  • Static Radial Load 77625 lbf
  • Lubrication Grease
  • Temperature Range - 30°C to 110 °C
  • Max Speed 11000 rpm
  • Weight 4.84 kg
Super Precision Angular Contact Ball Bearings S71924 ACD/P4AQBCB dimension drawing
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Features

Performance Features of S71924 ACD/P4AQBCB Bearing

S71924 ACD/P4AQBCB Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls provide strong resistance to radial and axial forces.

The phenolic cage ensures smooth operation, even at high speeds up to 11,000 rpm.
With a dynamic radial load capacity of 43,875 lbf, it handles demanding conditions reliably.

S71924 ACD/P4AQBCB Bearing comes pre-greased and sealed, reducing maintenance needs.
Its precision P4A tolerance class ensures consistent performance in high-accuracy applications.

The matched set of four bearings offers balanced load sharing, enhancing overall system stability.
Operating between -30°C to 110°C, it performs well in varied temperature conditions.

Application

Industrial Uses of S71924 ACD/P4AQBCB Bearing
S71924 ACD/P4AQBCB Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The sealed construction helps maintain performance in environments with dust or debris.

In robotics, S71924 ACD/P4AQBCB Bearing provides smooth motion control for articulated arms, thanks to its light preload and matched arrangement. The phenolic cage reduces friction, enhancing efficiency in repetitive tasks.

For aerospace applications, S71924 ACD/P4AQBCB Bearing’s P4A tolerance class meets the strict requirements for flight control systems. Its grease lubrication ensures reliable operation across a wide temperature range.

Where Is S71924 ACD/P4AQBCB Bearing Used?
S71924 ACD/P4AQBCB Bearing is ideal for CNC machining centres, where its high-speed capability and precision are key. The chrome steel rings offer durability under heavy radial loads.

In medical imaging devices, S71924 ACD/P4AQBCB Bearing’s low vibration contributes to clearer scans. The matched set of four bearings ensures consistent performance in critical applications.

Built for Heavy-Duty Use: S71924 ACD/P4AQBCB Bearing
S71924 ACD/P4AQBCB Bearing handles demanding conditions in industrial pumps, where its sealed design protects against contaminants. The 25° contact angle optimises load distribution.

For electric vehicle motors, S71924 ACD/P4AQBCB Bearing supports high-speed operation with minimal noise. Its grease lubrication reduces maintenance needs, making it a practical choice for automotive applications.

Automotive vs Aerospace: Applications of S71924 ACD/P4AQBCB Bearing
In automotive transmissions, S71924 ACD/P4AQBCB Bearing ensures smooth gear shifts with its angular contact design. The metric sizing fits seamlessly into European and Asian vehicle models.

For aircraft landing gear systems, S71924 ACD/P4AQBCB Bearing’s high static radial load capacity provides reliability under extreme conditions. The phenolic cage withstands temperature variations without compromising performance.

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