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Super Precision Angular Contact Ball Bearings 71812 ACD/P4QBCA

Super Precision Angular Contact Ball Bearings 71812 ACD/P4QBCA

The 71812 ACD/P4QBCA is a super precision angular contact ball bearing with a 60mm bore and 78mm outer diameter, crafted from high-quality chrome steel. It features a 25° contact angle and comes in a matched set of four bearings for balanced performance.

This bearing handles radial loads up to 7470 lbf and operates smoothly at speeds up to 35,000 RPM. Its phenolic cage ensures durability while the extra-light preload reduces friction for efficient running.

The open design allows for easy lubrication, making maintenance straightforward. It performs reliably in temperatures ranging from -30°C to 110°C.

Ideal for high-precision applications like machine tool spindles or robotics, where accuracy and speed are crucial. Weighing 0.4kg, it’s a robust yet lightweight solution for demanding environments.

Interchangeable with SKF bearings, it offers a practical replacement option. Compliant with P4 tolerance standards, ensuring consistent performance.

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Product Parameters

  • Part Number 71812 ACD/P4QBCA
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 60 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 78 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 40 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 5.556 mm
  • Ball Qty 28
  • Contact Angle 25°
  • Tolerance Class P4
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 4 bearings <<>> QBC
  • Number Of Bearings In Matched Set 4
  • 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 7470 lbf
  • Static Radial Load 11925 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 35000 rpm
  • Weight 0.4 kg
Super Precision Angular Contact Ball Bearings 71812 ACD/P4QBCA dimension drawing
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Features

Why Choose 71812 ACD/P4QBCA Bearing for Precision Tasks?

71812 ACD/P4QBCA Bearing features a 25° contact angle, optimised for high-precision angular contact applications.
Its chrome steel rings and balls ensure durability and consistent performance under dynamic radial loads up to 7470 lbf.

The phenolic cage maintains ball alignment, reducing friction and noise during high-speed operation.
With a maximum speed of 35,000 rpm, it delivers reliable efficiency in demanding conditions.

Designed for extra light preload (Class A), it offers smooth operation in matched arrangements.
The P4 tolerance class guarantees precision, making it ideal for critical applications.

Application

Essential Roles of 71812 ACD/P4QBCA Bearing
71812 ACD/P4QBCA 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, 71812 ACD/P4QBCA Bearing provides stability in articulated arms, thanks to its matched arrangement of four bearings. The extra light preload enhances responsiveness in dynamic movements.

For aerospace applications, 71812 ACD/P4QBCA Bearing handles radial and axial loads in avionics systems. Its P4 tolerance class guarantees consistent performance under demanding conditions.

Medical imaging devices benefit from 71812 ACD/P4QBCA Bearing’s smooth operation, crucial for precise positioning. The chrome steel construction ensures durability in sterile environments.

In automotive testing equipment, 71812 ACD/P4QBCA Bearing supports high-speed data acquisition systems. Its lubricated design minimises maintenance needs during prolonged use.

Q&A

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