Super Precision Angular Contact Ball Bearings 71911 FEGA/HCPA9A

The 71911 FEGA/HCPA9A is a super precision angular contact ball bearing with a 55mm bore and 80mm outer diameter, designed for high-speed applications. Its 18° contact angle and ceramic balls ensure smooth operation under radial loads up to 3442 lbf.

The open design and phenolic cage allow for easy lubrication and reduced friction, supporting speeds up to 34,000 RPM. The extra light preload (Class A) enhances precision in demanding setups.

This bearing is ideal for machine tools or spindles where accuracy and speed are crucial. It can be paired in back-to-back, face-to-face, or tandem arrangements for versatile use. Weighing just 0.14kg, it’s lightweight yet robust for its size.

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Description

Features

Application

Q&A

Product Parameters

Part Number 71911 FEGA/HCPA9A
Brand TFL
Interchangeable SKF
Bore Dia 55 mm
Bore Dia Tolerance -0.004mm to 0
Outer Dia 80 mm
Outer Dia Tolerance -0.004mm to 0
Width 13 mm
Width Tolerance -0.2mm to 0
Ball Dia 7.938 mm
Ball Qty 21
Contact Angle 18°
Tolerance Class PA9A
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 Ceramic
Cage Material Phenolic
Dynamic Radial Load 3442 lbf
Static Radial Load 2340 lbf
Lubrication Lubricated
Temperature Range - 30°C to 110 °C
Max Speed 34000 rpm
Weight 0.14 kg

Super Precision Angular Contact Ball Bearings 71911 FEGA/HCPA9A dimension drawing

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Features

Performance Features of 71911 FEGA/HCPA9A Bearing

71911 FEGA/HCPA9A Bearing is crafted with chrome steel rings and ceramic balls, offering a balance of strength and precision.
The 18° contact angle ensures efficient handling of combined radial and axial loads.

With a dynamic radial load capacity of 3442 lbf, it performs reliably in high-speed applications.
The phenolic cage maintains ball alignment, reducing friction and enhancing durability.

71911 FEGA/HCPA9A Bearing operates smoothly at speeds up to 34,000 rpm, ideal for precision machinery.
Its temperature range of -30°C to 110°C ensures consistent performance in varied conditions.

The extra light preload (Class A) minimises vibration, making it suitable for sensitive equipment.
Its universal matching capability allows flexible arrangement in back-to-back, face-to-face, or tandem configurations.

Application

How Does 71911 FEGA/HCPA9A Bearing Improve Performance?
71911 FEGA/HCPA9A Bearing is commonly used in high-speed machine spindles, where its ceramic balls and phenolic cage reduce friction and heat buildup. The 18° contact angle ensures stable performance under combined radial and axial loads.

In robotics, 71911 FEGA/HCPA9A Bearing provides smooth motion control for articulated arms, thanks to its precision tolerances. The extra light preload makes it ideal for applications requiring minimal resistance.

For aerospace components, 71911 FEGA/HCPA9A Bearing’s chrome steel rings and ceramic balls offer durability in demanding conditions. Its PA9A tolerance class guarantees consistent accuracy even at high rotational speeds.

Where Is 71911 FEGA/HCPA9A Bearing Used?
You’ll often find 71911 FEGA/HCPA9A Bearing in CNC machining centres, where its high-speed capability and precision are key. The open design allows for easy lubrication, extending service life in continuous operation.

In medical imaging devices, 71911 FEGA/HCPA9A Bearing’s smooth rotation ensures accurate positioning of scanning components. The ceramic balls also help reduce electromagnetic interference in sensitive equipment.

Built for Heavy-Duty Use: 71911 FEGA/HCPA9A Bearing
71911 FEGA/HCPA9A Bearing handles demanding loads in industrial pumps, with its dynamic radial load capacity of 3442 lbf. The phenolic cage withstands high temperatures without compromising performance.

For automotive testing equipment, 71911 FEGA/HCPA9A Bearing provides reliable angular contact support. Its universal matching capability allows flexible arrangement in back-to-back or face-to-face configurations.