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Super Precision Angular Contact Ball Bearings 71930 ACDGA/P4A

Super Precision Angular Contact Ball Bearings 71930 ACDGA/P4A

The 71930 ACDGA/P4A is a super precision angular contact ball bearing with a 150mm bore and 210mm outer diameter, crafted from high-quality chrome steel. Its 25° contact angle efficiently handles both radial and axial loads, making it versatile for demanding applications.

With a dynamic radial load capacity of 24300 lbf, it supports high-speed operations up to 11000 RPM. The phenolic cage ensures smooth performance, while the open design allows for easy lubrication and maintenance.

This bearing is ideal for precision machinery like CNC spindles or high-speed motors, where accuracy and reliability are crucial. It operates smoothly in temperatures ranging from -30°C to 110°C.

Weighing 2.5kg, it’s robust yet manageable for its size. Compliant with P4A tolerance standards, it ensures exceptional precision. The bearing can be arranged in back-to-back, face-to-face, or tandem configurations for flexible use.

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Product Parameters

  • Part Number 71930 ACDGA/P4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 150 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 210 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 28 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 19.05 mm
  • Ball Qty 23
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement No
  • Number Of Bearings In Matched Set 3
  • Universal Matching Bearing Yes, back-to-back (<>), face-to-face (><) or tandem (>>)
  • Preload Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 24300 lbf
  • Static Radial Load 28125 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 11000 rpm
  • Weight 2.5 kg
  • Price（$） 818.388
Super Precision Angular Contact Ball Bearings 71930 ACDGA/P4A dimension drawing
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Features

Performance Features of 71930 ACDGA/P4A Bearing

71930 ACDGA/P4A Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls ensure durability, while the phenolic cage reduces friction and heat generation.
With a dynamic radial load capacity of 24,300 lbf, it handles demanding conditions reliably.
The P4A tolerance class guarantees high precision, making it suitable for critical applications.
Operating at speeds up to 11,000 rpm, it balances performance and longevity.
Its universal matching capability allows flexible arrangement options like back-to-back or face-to-face configurations.

Application

Industrial Uses of 71930 ACDGA/P4A Bearing
71930 ACDGA/P4A 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 requiring minimal friction and high-speed operation.

In aerospace components, 71930 ACDGA/P4A Bearing provides reliable performance in gearboxes and rotor systems. Its P4A tolerance class guarantees the precision needed for critical flight operations.

For automation systems, 71930 ACDGA/P4A Bearing supports robotic arms and CNC machinery with smooth angular load handling. The phenolic cage material offers durability while maintaining low weight.

Medical imaging devices benefit from 71930 ACDGA/P4A Bearing’s consistent performance and low noise levels. The chrome steel construction ensures long-term reliability in demanding healthcare environments.

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