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Super Precision Angular Contact Ball Bearings 71921 ACDGA/P4A

Super Precision Angular Contact Ball Bearings 71921 ACDGA/P4A

The 71921 ACDGA/P4A is a super precision angular contact ball bearing with a 105mm bore and 145mm outer diameter, crafted from durable chrome steel. Its compact 20mm width makes it suitable for space-sensitive applications.

Designed for angular contact loads, it handles up to 12870 lbf dynamically and spins smoothly at speeds up to 16000 RPM. The phenolic cage ensures quiet operation and long service life.

With a 25° contact angle and extra light preload, it offers precise performance in demanding setups. The open design allows easy lubrication and maintenance.

Ideal for high-speed spindles or precision machinery, this bearing is interchangeable with SKF models. It operates reliably in temperatures from -30°C to 110°C and weighs just 0.82kg.

The bearing can be paired in back-to-back, face-to-face, or tandem arrangements for versatile use. Compliant with P4A tolerance standards for exceptional accuracy.

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Product Parameters

  • Part Number 71921 ACDGA/P4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 105 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 145 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 20 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 12.7 mm
  • Ball Qty 27
  • Contact Angle 25°
  • Tolerance Class P4A
  • 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 12870 lbf
  • Static Radial Load 14738 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16000 rpm
  • Weight 0.82 kg
Super Precision Angular Contact Ball Bearings 71921 ACDGA/P4A dimension drawing
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Features

Performance Features of 71921 ACDGA/P4A Bearing

71921 ACDGA/P4A Bearing is crafted with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls ensure high durability and resistance to wear.

The phenolic cage maintains ball alignment, reducing friction and enhancing smooth operation.
With a dynamic radial load capacity of 12870 lbf, it handles demanding conditions effortlessly.

71921 ACDGA/P4A Bearing operates efficiently at speeds up to 16,000 rpm, balancing performance and longevity.
Its extra light preload (Class A) ensures precision in high-speed applications.

The open design allows for easy lubrication, maintaining optimal performance over time.
Its temperature range of -30°C to 110°C ensures reliability in varied environments.

71921 ACDGA/P4A Bearing is part of a universal matching set, offering flexibility in mounting configurations.
This makes it suitable for complex assemblies requiring back-to-back, face-to-face, or tandem arrangements.

Application

Industrial Uses of 71921 ACDGA/P4A Bearing
71921 ACDGA/P4A Bearing is commonly used in high-speed machine tools, where its precision and angular contact design ensure accurate performance. The phenolic cage reduces friction, making it suitable for continuous operation.

In automotive applications, 71921 ACDGA/P4A Bearing supports components like wheel hubs and transmissions, handling both radial and axial loads efficiently. Its P4A tolerance class guarantees consistent performance under demanding conditions.

For robotics, 71921 ACDGA/P4A Bearing provides smooth motion in articulated arms and joints, thanks to its extra light preload. The chrome steel construction ensures durability in repetitive movements.

Where Is 71921 ACDGA/P4A Bearing Used?
You’ll find 71921 ACDGA/P4A Bearing in aerospace systems, where its high-speed capability and precision are crucial for flight control mechanisms. The open design allows for easy lubrication maintenance.

In medical imaging devices, 71921 ACDGA/P4A Bearing offers reliable performance, ensuring minimal vibration during operation. Its temperature range makes it adaptable to various clinical environments.

Built for Heavy-Duty Use: 71921 ACDGA/P4A Bearing
71921 ACDGA/P4A Bearing excels in industrial pumps, handling both radial and thrust loads with ease. The phenolic cage material resists wear, even in harsh chemical environments.

For automation systems, 71921 ACDGA/P4A Bearing ensures precise positioning in conveyor belts and assembly lines. Its universal matching feature allows for flexible configurations in complex setups.

Q&A

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