Super Precision Angular Contact Ball Bearings S71905 ACEGA/HCP4A

The S71905 ACEGA/HCP4A is a super precision angular contact ball bearing with a 25mm bore and 42mm outer diameter, measuring just 9mm wide. Made from chrome steel with ceramic balls, it offers smooth operation and durability.

It handles radial loads up to 1141 lbf and spins at speeds up to 83,000 RPM, thanks to its phenolic cage and grease lubrication. The 25° contact angle ensures efficient load distribution.

Sealed for protection, this bearing works in temperatures from -30°C to 110°C. Its P4A tolerance class guarantees high precision for demanding applications.

Ideal for high-speed machinery like spindles or dental tools, where accuracy and reliability are key. Weighing only 0.038kg, it’s lightweight yet robust. Compatible with SKF bearings for easy replacement.

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Description

Features

Application

Q&A

Product Parameters

Part Number S71905 ACEGA/HCP4A
Brand TFL
Interchangeable SKF
Bore Dia 25 mm
Bore Dia Tolerance -0.004mm to 0
Outer Dia 42 mm
Outer Dia Tolerance -0.004mm to 0
Width 9 mm
Width Tolerance -0.2mm to 0
Ball Dia 4.762 mm
Ball Qty 16
Contact Angle 25°
Tolerance Class P4A
System of Measurement Metric
Seal Type Sealed
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 1141 lbf
Static Radial Load 596 lbf
Lubrication Grease
Temperature Range - 30°C to 110 °C
Max Speed 83000 rpm
Weight 0.038 kg

Super Precision Angular Contact Ball Bearings S71905 ACEGA/HCP4A dimension drawing

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Features

Performance Features of S71905 ACEGA/HCP4A Bearing

S71905 ACEGA/HCP4A Bearing is crafted with chrome steel rings and ceramic balls, ensuring smooth operation in high-speed applications.
Its 25° contact angle provides excellent radial and axial load capacity, making it versatile for various tasks.

The phenolic cage maintains ball alignment, reducing friction and extending the bearing’s lifespan.
With a maximum speed of 83,000 rpm, it delivers reliable performance in demanding conditions.

S71905 ACEGA/HCP4A Bearing’s sealed design keeps contaminants out, ensuring consistent operation.
The extra light preload enhances precision, making it ideal for applications requiring tight tolerances.

Its grease lubrication reduces maintenance needs while ensuring smooth performance.
The P4A tolerance class guarantees high precision and reliability in every use.

Application

Where Is S71905 ACEGA/HCP4A Bearing Used?
S71905 ACEGA/HCP4A Bearing is commonly used in high-speed machine tools, where its ceramic balls and phenolic cage reduce friction and heat buildup. The extra light preload ensures smooth operation in precision applications like spindle drives.

In robotics, S71905 ACEGA/HCP4A Bearing supports articulated arms, offering reliable angular contact for precise movements. Its sealed design keeps contaminants out, making it suitable for cleanroom environments.

For dental handpieces, S71905 ACEGA/HCP4A Bearing’s P4A tolerance class provides the accuracy needed for delicate procedures. The grease lubrication ensures quiet operation, which is essential in medical settings.

In optical equipment, S71905 ACEGA/HCP4A Bearing’s chrome steel rings and ceramic balls deliver stability for lenses and mirrors. The compact 25 mm×42 mm×9 mm size fits well in space-constrained designs.