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Super Precision Angular Contact Ball Bearings 71820 ACDGA/P4

Super Precision Angular Contact Ball Bearings 71820 ACDGA/P4

The 71820 ACDGA/P4 is a super precision angular contact ball bearing with a 100mm bore and 125mm outer diameter, crafted from durable chrome steel. It handles radial loads up to 4770 lbf and operates smoothly at speeds up to 15,000 RPM.

With a 25° contact angle and extra light preload, it offers precise performance for demanding applications. The open design allows easy lubrication, while the phenolic cage ensures quiet operation.

This bearing is ideal for high-speed machinery like spindles or CNC tools, where accuracy is key. It can be paired in back-to-back, face-to-face, or tandem arrangements for versatile use.

Weighing 0.31kg, it’s lightweight yet robust. Compliant with P4 tolerance standards, it ensures reliable performance in temperatures from -30°C to 110°C. Interchangeable with SKF bearings for easy replacement.

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Product Parameters

  • Part Number 71820 ACDGA/P4
  • 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 13 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 7.144 mm
  • Ball Qty 34
  • Contact Angle 25°
  • Tolerance Class P4
  • 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 4770 lbf
  • Static Radial Load 6188 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 15000 rpm
  • Weight 0.31 kg
Super Precision Angular Contact Ball Bearings 71820 ACDGA/P4 dimension drawing
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Features

Engineered for Precision: 71820 ACDGA/P4 Bearing

71820 ACDGA/P4 Bearing features a 25° contact angle, optimised for high-precision angular contact applications.
Its chrome steel rings and balls ensure durability, while the phenolic cage reduces friction for smoother operation.

With a dynamic radial load capacity of 4770 lbf, it handles demanding tasks reliably.
The P4 tolerance class guarantees exceptional accuracy, making it suitable for precision machinery.

Operating at speeds up to 15,000 rpm, it balances performance and longevity.
Its open design allows for easy lubrication, maintaining efficiency over time.

The bearing’s universal matching capability supports versatile configurations like back-to-back or tandem arrangements.
This flexibility makes it a practical choice for complex mechanical systems.

Application

Industrial Uses of 71820 ACDGA/P4 Bearing
71820 ACDGA/P4 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 automotive applications, 71820 ACDGA/P4 Bearing supports wheel hubs and transmission systems, handling both radial and axial loads efficiently. Its P4 tolerance class guarantees consistent performance in demanding conditions.

For robotics, 71820 ACDGA/P4 Bearing provides smooth motion in articulated arms and joints. The chrome steel construction offers durability, while the extra light preload ensures minimal resistance during movement.

Where Is 71820 ACDGA/P4 Bearing Used?
71820 ACDGA/P4 Bearing finds its place in aerospace components, such as gyroscopes and actuators, due to its high precision and reliability. The open design allows for easy lubrication, extending service life.

In medical imaging devices, 71820 ACDGA/P4 Bearing ensures quiet and vibration-free operation. Its temperature stability makes it ideal for equipment requiring consistent performance over long periods.

Built for Heavy-Duty Use: 71820 ACDGA/P4 Bearing
71820 ACDGA/P4 Bearing excels in industrial pumps and compressors, where its dynamic load capacity handles continuous operation. The 25° contact angle optimises load distribution for longer bearing life.

For automation systems, 71820 ACDGA/P4 Bearing enables precise linear motion in CNC machines. Its universal matching capability allows for flexible configurations in complex setups.

Q&A

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