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Super Precision Angular Contact Ball Bearings 71821 ACDGA/P4

Super Precision Angular Contact Ball Bearings 71821 ACDGA/P4

The 71821 ACDGA/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 4860 lbf and operates smoothly at speeds up to 16,000 RPM.

With a 25° contact angle and extra light preload, it offers precise performance for demanding applications. The open design and phenolic cage ensure reliable operation in temperatures from -30°C to 110°C.

This bearing is interchangeable with SKF models and comes lubricated for immediate use. Ideal for high-precision machinery like spindles or CNC equipment where accuracy is key.

Weighing 0.32kg, it’s part of a universal matching set, allowing flexible arrangements like back-to-back or face-to-face mounting. Compliant with P4 tolerance standards for consistent performance.

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Product Parameters

  • Part Number 71821 ACDGA/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 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 4860 lbf
  • Static Radial Load 6412 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 ACDGA/P4 dimension drawing
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Features

Performance Features of 71821 ACDGA/P4 Bearing

71821 ACDGA/P4 Bearing is crafted with a 25° 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 4860 lbf, 71821 ACDGA/P4 Bearing handles demanding conditions reliably.
The P4 tolerance class guarantees high precision, making it suitable for critical machinery.

71821 ACDGA/P4 Bearing operates smoothly at speeds up to 16,000 rpm, balancing performance and longevity.
Its open design allows for easy lubrication, maintaining efficiency over extended periods.

Application

Super Precision Angular Contact Ball Bearings 71821 ACDGA/P4 are commonly used in high-speed machine tools, where their 25° contact angle ensures accurate radial and axial load handling. The open design and phenolic cage make them suitable for applications requiring minimal friction and heat generation.

In robotics, 71821 ACDGA/P4 Bearings provide smooth motion control for articulated arms and precision joints. Their P4 tolerance class guarantees consistent performance in automated systems where repeatability is key.

For aerospace applications, 71821 ACDGA/P4 Bearings are chosen for their ability to handle combined loads in compact spaces, such as actuator systems. The chrome steel construction offers durability under demanding conditions.

Consumer electronics like high-end printers benefit from 71821 ACDGA/P4 Bearings’ low noise and vibration levels. The extra light preload ensures quiet operation, ideal for office environments.

Medical imaging devices rely on 71821 ACDGA/P4 Bearings for their precision and reliability. The lubricated design maintains performance over long periods, reducing maintenance needs in critical healthcare equipment.

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