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Super Precision Angular Contact Ball Bearings 71920 ACD/P4ADGA

Super Precision Angular Contact Ball Bearings 71920 ACD/P4ADGA

The 71920 ACD/P4ADGA is a super precision angular contact ball bearing with a 100mm bore and 140mm outer diameter, crafted from high-quality chrome steel. It handles radial loads up to 20768 lbf and operates smoothly at speeds up to 15000 RPM.

Its 25° contact angle and universal matching design allow flexible arrangements like back-to-back or face-to-face, ideal for complex setups. The phenolic cage ensures durability and reduces friction for long-lasting performance.

This bearing is lubricated for easy maintenance and works in temperatures from -30°C to 110°C. It comes in a matched set of two, perfect for high-precision applications like machine tool spindles or high-speed robotics.

Weighing 1.6kg, it’s robust yet manageable for its size. Compliant with P4A tolerance standards, it’s a reliable choice for demanding environments.

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Product Parameters

  • Part Number 71920 ACD/P4ADGA
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 100 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 140 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 40 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 12.7 mm
  • Ball Qty 26
  • Contact Angle 25°
  • Tolerance Class P4A
  • 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 20768 lbf
  • Static Radial Load 28125 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 15000 rpm
  • Weight 1.6 kg
  • Price（$） 564.462
Super Precision Angular Contact Ball Bearings 71920 ACD/P4ADGA dimension drawing
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Features

Performance Features of 71920 ACD/P4ADGA Bearing

71920 ACD/P4ADGA Bearing is crafted with chrome steel rings and balls, offering high precision and durability.

Its 25° contact angle ensures optimal load distribution, making it suitable for angular contact applications.

The phenolic cage enhances stability and reduces friction during high-speed operations.

With a maximum speed of 15,000 rpm, it delivers reliable performance in demanding conditions.

How Does 71920 ACD/P4ADGA Bearing Reduce Friction?

71920 ACD/P4ADGA Bearing features a phenolic cage that minimises friction and wear.

The chrome steel construction ensures smooth operation even under heavy radial loads up to 20768 lbf.

Its universal matching design allows for flexible arrangement options, enhancing versatility.

Precision-engineered to P4A tolerance class, it guarantees consistent performance.

Engineered for Precision: 71920 ACD/P4ADGA Bearing

71920 ACD/P4ADGA Bearing is designed for super precision applications with its P4A tolerance class.

The extra light preload ensures smooth and quiet operation, ideal for high-speed machinery.

Its open seal type allows for easy lubrication, maintaining optimal performance.

With a temperature range of -30°C to 110°C, it adapts to various working environments.

Steel vs Ceramic Bearings: Strengths of 71920 ACD/P4ADGA Bearing

71920 ACD/P4ADGA Bearing’s chrome steel construction provides excellent strength and durability.

The 26 balls with 12.7 mm diameter ensure even load distribution and reduced friction.

Its universal matching capability allows for back-to-back or face-to-face arrangements.

Weighing 1.6 kg, it balances robustness and ease of handling.

Application

Key Fields for 71920 ACD/P4ADGA Bearing
71920 ACD/P4ADGA Bearing is widely used in high-precision machine tools, where its 25° contact angle ensures accurate radial and axial load handling. The open design and phenolic cage make it suitable for high-speed operations up to 15,000 rpm.

In robotics, 71920 ACD/P4ADGA Bearing supports articulated arms and joints, providing smooth movement under angular loads. Its universal matching feature allows flexible arrangement in back-to-back or face-to-face configurations.

For aerospace applications, 71920 ACD/P4ADGA Bearing’s chrome steel construction offers reliability in navigation systems and actuators. The extra-light preload ensures minimal friction, crucial for precision control in flight components.

Where Is 71920 ACD/P4ADGA Bearing Used?
You’ll often find 71920 ACD/P4ADGA Bearing in CNC spindles, where its P4A tolerance class guarantees tight precision. The lubricated design helps maintain performance even during prolonged use.

In medical imaging devices, 71920 ACD/P4ADGA Bearing’s low vibration characteristics ensure clear scans. The temperature range of -30°C to 110°C makes it adaptable to various clinical environments.

Built for Heavy-Duty Use: 71920 ACD/P4ADGA Bearing
71920 ACD/P4ADGA Bearing handles dynamic radial loads up to 20,768 lbf, making it ideal for industrial gearboxes. Its 26-ball design distributes stress evenly, extending service life.

For printing machinery, 71920 ACD/P4ADGA Bearing’s tandem arrangement supports high-speed paper feeding. The metric dimensions ensure compatibility with European and Asian equipment standards.

Automotive vs Aerospace: Applications of 71920 ACD/P4ADGA Bearing
In automotive transmissions, 71920 ACD/P4ADGA Bearing manages angular loads while reducing noise. Its phenolic cage resists heat, a common issue in drivetrain components.

Aerospace systems benefit from 71920 ACD/P4ADGA Bearing’s lightweight yet robust construction. The matched set feature simplifies installation in critical flight control mechanisms.

Q&A

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