Super Precision Angular Contact Ball Bearings 71909 ACD/P4ADGA

The 71909 ACD/P4ADGA is a super precision angular contact ball bearing, measuring 45mm by 68mm by 24mm. Made from chrome steel, it’s designed for high-speed applications with a 25° contact angle.

It handles radial loads up to 4478 lbf and spins smoothly at speeds up to 41,000 RPM. The phenolic cage ensures quiet operation and durability, even under extra light preload.

This bearing comes in a matched set of two, allowing universal mounting in back-to-back, face-to-face, or tandem configurations. Ideal for precision machinery like spindles or CNC tools where accuracy is key.

Weighing just 0.26kg, it operates in temperatures from -30°C to 110°C. Compliant with P4A tolerance standards, it’s a reliable choice for demanding applications.

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Description

Features

Application

Q&A

Product Parameters

Part Number 71909 ACD/P4ADGA
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 24 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 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 4478 lbf
Static Radial Load 4050 lbf
Lubrication Lubricated
Temperature Range - 30°C to 110 °C
Max Speed 41000 rpm
Weight 0.26 kg
Price（$） 185.184

Super Precision Angular Contact Ball Bearings 71909 ACD/P4ADGA dimension drawing

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Features

Performance Features of 71909 ACD/P4ADGA Bearing

71909 ACD/P4ADGA Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls provide strength and durability under dynamic radial loads up to 4478 lbf.

The phenolic cage ensures smooth operation at high speeds, reaching up to 41,000 rpm.
Universal matching allows flexible arrangements like back-to-back or face-to-face configurations.

With P4A tolerance class, 71909 ACD/P4ADGA Bearing delivers precise performance in demanding conditions.
Its extra light preload reduces friction, enhancing efficiency and longevity.

The open design simplifies lubrication, maintaining consistent performance between -30°C to 110°C.
This bearing’s balanced construction ensures reliability in high-precision applications.

Application

Key Fields for 71909 ACD/P4ADGA Bearing
71909 ACD/P4ADGA Bearing is widely used in high-speed machine tools, where its 25° contact angle provides excellent radial and axial load capacity. The universal matching design allows flexible arrangements, making it suitable for complex setups.

In robotics, 71909 ACD/P4ADGA Bearing ensures smooth motion in articulated arms and joints, thanks to its phenolic cage reducing friction. The extra-light preload enhances precision in repetitive tasks.

For aerospace applications, 71909 ACD/P4ADGA Bearing’s P4A tolerance class guarantees reliability in navigation systems. Its chrome steel construction withstands varying temperatures without compromising performance.

Automotive testing equipment benefits from 71909 ACD/P4ADGA Bearing’s high-speed capability, handling up to 41,000 rpm. The open design simplifies lubrication, extending service life in demanding conditions.

Medical imaging devices rely on 71909 ACD/P4ADGA Bearing for quiet, vibration-free operation. The matched set configuration ensures consistent accuracy in critical diagnostic tools.