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Super Precision Angular Contact Ball Bearings 71921 CD/P4ADGA

Super Precision Angular Contact Ball Bearings 71921 CD/P4ADGA

The 71921 CD/P4ADGA is a super precision angular contact ball bearing with a 105mm bore and 145mm outer diameter, crafted from high-quality chrome steel. It features a 15° contact angle and is designed for angular contact loads, handling up to 22388 lbf dynamically.

Its open design and phenolic cage ensure smooth operation at speeds up to 16000 RPM, even in temperatures ranging from -30°C to 110°C. The extra light preload (Class A) enhances precision and reduces friction.

This bearing is universally matched, allowing flexible arrangements like back-to-back, face-to-face, or tandem setups. Ideal for high-precision applications such as machine tool spindles or aerospace components.

Weighing 1.64kg, it’s robust yet manageable for its size. Compliant with P4A tolerance standards, it’s interchangeable with SKF bearings for easy replacements.

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Product Parameters

  • Part Number 71921 CD/P4ADGA
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 105 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 145 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 40 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 12.7 mm
  • Ball Qty 27
  • Contact Angle 15°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement Universal matching
  • Number Of Bearings In Matched Set 2
  • 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 22388 lbf
  • Static Radial Load 30825 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16000 rpm
  • Weight 1.64 kg
Super Precision Angular Contact Ball Bearings 71921 CD/P4ADGA dimension drawing
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Features

Performance Features of 71921 CD/P4ADGA Bearing

71921 CD/P4ADGA Bearing is crafted with a 15° contact angle, optimising load distribution for precision applications.
Its chrome steel construction ensures durability and resistance to wear under high radial loads.

The phenolic cage maintains ball alignment, reducing friction and enhancing operational smoothness.
With a dynamic radial load capacity of 22388 lbf, it handles demanding conditions effortlessly.

71921 CD/P4ADGA Bearing operates efficiently at speeds up to 16,000 rpm, balancing performance and longevity.
Its universal matching design allows flexible arrangements like back-to-back or face-to-face configurations.

The extra light preload (Class A) ensures minimal friction, making it ideal for high-precision machinery.
Temperature resilience from -30°C to 110°C guarantees reliable performance in varied environments.

Application

Industrial Uses of 71921 CD/P4ADGA Bearing
71921 CD/P4ADGA Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The universal matching feature allows flexible arrangements, making it suitable for complex setups.

In automotive applications, 71921 CD/P4ADGA Bearing supports high-speed components like turbochargers and electric motors. Its extra light preload helps reduce friction, improving efficiency and longevity.

For medical imaging devices, 71921 CD/P4ADGA Bearing’s phenolic cage and chrome steel construction provide reliable performance. The P4A tolerance class ensures the precision needed for sensitive diagnostic equipment.

Automation systems benefit from 71921 CD/P4ADGA Bearing’s ability to handle both radial and axial loads. Its high-speed capability makes it ideal for robotic arms and CNC machinery.

In aerospace applications, 71921 CD/P4ADGA Bearing’s durability and temperature resistance are key. The matched set design ensures consistent performance in critical flight components.

Q&A

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