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Super Precision Angular Contact Ball Bearings 71821 CDGA/P4

Super Precision Angular Contact Ball Bearings 71821 CDGA/P4

The 71821 CDGA/P4 is a super precision angular contact ball bearing with a 105mm bore and 130mm outer diameter, crafted from durable chrome steel. It handles radial loads up to 5152 lbf and operates smoothly at speeds up to 16,000 RPM.

Its 15° contact angle and open design ensure efficient load distribution, while the phenolic cage offers quiet, long-lasting performance. The bearing comes pre-lubricated and works in temperatures from -30°C to 110°C.

This P4-class bearing is part of a universal matching set, suitable for back-to-back, face-to-face, or tandem arrangements. Ideal for high-precision applications like machine tool spindles or robotics.

Weighing just 0.32kg, it’s lightweight yet robust, and interchangeable with SKF bearings for easy replacement. Compliant with industry standards for reliable performance.

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Product Parameters

  • Part Number 71821 CDGA/P4
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 105 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 130 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 13 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 7.144 mm
  • Ball Qty 35
  • Contact Angle 15°
  • Tolerance Class P4
  • 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 5152 lbf
  • Static Radial Load 6750 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16000 rpm
  • Weight 0.32 kg
Super Precision Angular Contact Ball Bearings 71821 CDGA/P4 dimension drawing
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Features

Performance Features of 71821 CDGA/P4 Bearing

71821 CDGA/P4 Bearing is crafted with chrome steel rings and balls, offering high precision for angular contact applications.
Its 15° contact angle ensures optimal load distribution, enhancing performance in demanding setups.

The phenolic cage maintains ball alignment, reducing friction and extending operational life.
With a dynamic radial load capacity of 5152 lbf, it handles rigorous conditions reliably.

71821 CDGA/P4 Bearing operates smoothly at speeds up to 16,000 rpm, balancing speed and durability.
Its P4 tolerance class guarantees consistent precision, making it ideal for high-accuracy machinery.

Application

Essential Roles of 71821 CDGA/P4 Bearing
71821 CDGA/P4 Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The phenolic cage helps reduce friction, making it suitable for high-speed operations.

In automotive applications, 71821 CDGA/P4 Bearing supports components like wheel hubs and transmissions, where its extra light preload enhances performance. The chrome steel construction provides durability under varying loads.

For robotics, 71821 CDGA/P4 Bearing offers reliable motion control in robotic arms and automated systems. Its P4 tolerance class ensures consistent precision in repetitive tasks.

Medical imaging devices benefit from 71821 CDGA/P4 Bearing’s smooth operation and low noise levels. The open design allows for easy lubrication, extending service life in critical applications.

Q&A

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