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Super Precision Angular Contact Ball Bearings 71820 CD/P4DGA

Super Precision Angular Contact Ball Bearings 71820 CD/P4DGA

The 71820 CD/P4DGA is a super precision angular contact ball bearing with a 100mm bore and 125mm outer diameter, crafted from high-quality chrome steel. It features a 15° contact angle and comes in a universal matching set of two bearings.

Designed for angular contact loads, it handles dynamic radial loads up to 8348 lbf and spins smoothly at speeds up to 15000 RPM. Its phenolic cage ensures quiet operation and long service life.

The open design allows for easy lubrication, while the P4 tolerance class guarantees exceptional accuracy. It works in temperatures from -30°C to 110°C.

Ideal for high-precision applications like machine tool spindles or medical equipment. Weighing 0.62kg, it’s a robust yet manageable component for demanding setups. The universal matching allows flexible arrangements (back-to-back, face-to-face, or tandem).

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Product Parameters

  • Part Number 71820 CD/P4DGA
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 100 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 125 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 26 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 7.144 mm
  • Ball Qty 34
  • Contact Angle 15°
  • Tolerance Class P4
  • 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 8348 lbf
  • Static Radial Load 13162 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 15000 rpm
  • Weight 0.62 kg
  • Price（$） 581.139
Super Precision Angular Contact Ball Bearings 71820 CD/P4DGA dimension drawing
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Features

Performance Features of 71820 CD/P4DGA Bearing

71820 CD/P4DGA Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls ensure durability, while the phenolic cage reduces friction and noise.

With a dynamic radial load capacity of 8348 lbf, it handles demanding conditions reliably.
The P4 tolerance class guarantees high precision, making it suitable for critical applications.

Operating at speeds up to 15,000 rpm, 71820 CD/P4DGA Bearing maintains smooth performance.
Its universal matching design allows flexible arrangement, enhancing versatility in various setups.

Application

Common Applications of 71820 CD/P4DGA Bearing
In precision machine tools, 71820 CD/P4DGA Bearing excels due to its angular contact design and P4 tolerance class, ensuring minimal vibration during high-speed operations. The universal matching feature allows flexible arrangements like back-to-back or tandem setups.

Where Is 71820 CD/P4DGA Bearing Used?
You’ll often find 71820 CD/P4DGA Bearing in spindle assemblies for CNC machines, where its extra light preload enhances accuracy. The phenolic cage also reduces friction, making it ideal for long-running applications.

Built for Heavy-Duty Use: 71820 CD/P4DGA Bearing
This bearing handles dynamic radial loads up to 8348 lbf, making it suitable for industrial gearboxes. Its chrome steel construction ensures durability even in demanding environments.

Automotive vs Aerospace: Applications of 71820 CD/P4DGA Bearing
In automotive systems, 71820 CD/P4DGA Bearing supports high-precision components like turbochargers. For aerospace, its temperature range (-30°C to 110°C) and low-weight design are key advantages.

Perfect Fit for Automation: 71820 CD/P4DGA Bearing
Robotic arms benefit from 71820 CD/P4DGA Bearing’s 15° contact angle, which provides smooth motion control. The lubricated design further reduces maintenance needs in automated production lines.

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