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Super Precision Angular Contact Ball Bearings 71921 CDGA/P4A

Super Precision Angular Contact Ball Bearings 71921 CDGA/P4A

The 71921 CDGA/P4A is a super precision angular contact ball bearing with a 105mm bore and 145mm outer diameter, crafted from durable chrome steel. It handles radial loads up to 13905 lbf and operates smoothly at speeds up to 16000 RPM.

Its 15° contact angle and extra light preload ensure precise performance, while the phenolic cage offers quiet operation. The bearing works in temperatures from -30°C to 110°C and comes pre-lubricated for easy use.

This model is interchangeable with SKF bearings and can be paired in back-to-back, face-to-face, or tandem arrangements. Ideal for high-precision applications like machine tools or spindle drives.

Weighing 0.82kg, it’s a robust yet manageable size. Compliant with P4A tolerance standards for reliable accuracy.

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Product Parameters

  • Part Number 71921 CDGA/P4A
  • 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 20 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 No
  • 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 13905 lbf
  • Static Radial Load 15638 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16000 rpm
  • Weight 0.82 kg
  • Price（$） 233.676
Super Precision Angular Contact Ball Bearings 71921 CDGA/P4A dimension drawing
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Features

Performance Features of 71921 CDGA/P4A Bearing

71921 CDGA/P4A Bearing is designed with a 15° contact angle, providing excellent radial and axial load capacity.
Its chrome steel rings and balls ensure durability and high performance in precision applications.

The phenolic cage in 71921 CDGA/P4A Bearing maintains ball alignment, reducing friction and wear.
With a dynamic radial load capacity of 13,905 lbf, it handles demanding conditions with ease.

71921 CDGA/P4A Bearing operates smoothly at speeds up to 16,000 rpm, making it ideal for high-speed machinery.
Its extra light preload ensures minimal friction and optimal performance.

The open design of 71921 CDGA/P4A Bearing allows for easy lubrication, extending its service life.
It functions reliably in temperatures ranging from -30°C to 110°C.

71921 CDGA/P4A Bearing’s universal matching capability offers flexibility in various mounting arrangements.
Its precision P4A tolerance class ensures consistent performance in critical applications.

Application

Industrial Uses of 71921 CDGA/P4A Bearing
71921 CDGA/P4A 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, 71921 CDGA/P4A Bearing provides stability in articulated arms, thanks to its extra-light preload and P4A tolerance. Its chrome steel construction offers durability in repetitive motion applications.

For aerospace components, 71921 CDGA/P4A Bearing handles radial and axial loads in avionics systems. The open design allows for easy lubrication, extending service life in demanding conditions.

Where Is 71921 CDGA/P4A Bearing Used?
You’ll find 71921 CDGA/P4A Bearing in medical imaging devices, where its precision and low noise are essential. The 15° contact angle ensures smooth rotation in sensitive equipment.

In automotive testing rigs, 71921 CDGA/P4A Bearing supports high-speed shafts with minimal vibration. Its metric sizing and universal matching make it versatile for various configurations.

Built for Heavy-Duty Use: 71921 CDGA/P4A Bearing
71921 CDGA/P4A Bearing excels in industrial pumps, handling both radial and angular loads effortlessly. The chrome steel balls and rings provide reliable performance in corrosive environments.

For CNC machining centres, 71921 CDGA/P4A Bearing’s high dynamic load capacity ensures long-term accuracy. Its tandem arrangement option allows for customised load distribution in complex setups.

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