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Super Precision Angular Contact Ball Bearings 71909 ACDGA/P4A

Super Precision Angular Contact Ball Bearings 71909 ACDGA/P4A

The 71909 ACDGA/P4A is a super precision angular contact ball bearing with a 45mm bore and 68mm outer diameter, crafted from durable chrome steel. It handles radial loads up to 2790 lbf and spins smoothly at speeds up to 41,000 RPM.

Its 25° contact angle and extra-light preload ensure precise performance, while the phenolic cage reduces friction for quiet operation. The open design allows easy lubrication and maintenance.

This bearing is ideal for high-speed applications like machine tool spindles or precision instruments. It can be arranged in back-to-back, face-to-face, or tandem configurations for versatile use.

Weighing just 0.13kg, it’s lightweight yet robust. Compliant with P4A tolerance standards, it offers reliable accuracy for demanding tasks.

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Product Parameters

  • Part Number 71909 ACDGA/P4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 45 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 68 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 12 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 6.35 mm
  • Ball Qty 23
  • 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 2790 lbf
  • Static Radial Load 2025 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 41000 rpm
  • Weight 0.13 kg
  • Price（$） 75.258
Super Precision Angular Contact Ball Bearings 71909 ACDGA/P4A dimension drawing
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Features

How Does 71909 ACDGA/P4A Bearing Achieve Super Precision?

71909 ACDGA/P4A 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 and noise.

With a dynamic radial load capacity of 2790 lbf, it handles demanding tasks with ease.
The P4A tolerance class guarantees exceptional accuracy, making it ideal for precision machinery.

Operating at speeds up to 41,000 rpm, it maintains performance without compromising reliability.
Its universal matching capability allows flexible configurations like back-to-back or tandem arrangements.

Application

Precision Applications of 71909 ACDGA/P4A Bearing
71909 ACDGA/P4A Bearing is commonly used in high-speed machine tools, where its 25° contact angle ensures accurate radial and axial load handling. The phenolic cage reduces friction, making it suitable for precision grinding spindles.

In robotics, 71909 ACDGA/P4A Bearing provides smooth motion control for articulated arms, thanks to its extra-light preload and P4A tolerance. Its open design allows for easy lubrication, extending service life in continuous operation.

For medical imaging devices, 71909 ACDGA/P4A Bearing’s chrome steel construction offers reliable performance in high-resolution scanners. The metric dimensions ensure compatibility with European and Asian equipment standards.

Automotive testing equipment benefits from 71909 ACDGA/P4A Bearing’s ability to handle high rotational speeds. Its universal matching option simplifies installation in complex drivetrain setups.

In aerospace applications, 71909 ACDGA/P4A Bearing’s temperature stability makes it ideal for flight control systems. The lightweight phenolic cage contributes to fuel efficiency without compromising durability.

Q&A

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