Super Precision Angular Contact Ball Bearings S71918 ACE/HCP4A

The S71918 ACE/HCP4A is a super precision angular contact ball bearing with a 90mm bore and 125mm outer diameter, crafted from high-quality chrome steel. It features a 25° contact angle and ceramic balls for smooth operation.

This bearing handles radial loads up to 6435 lbf and reaches speeds of 15500 RPM, making it suitable for high-performance applications. Its sealed design keeps lubrication in place, reducing maintenance needs.

The phenolic cage ensures durability, while the P4 tolerance class guarantees precise performance. Ideal for machine tools or precision equipment where accuracy is crucial.

Weighing 0.46kg, it’s available in matched sets for paired applications. Works reliably in temperatures from -30°C to 110°C.

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Description

Features

Application

Q&A

Product Parameters

Part Number S71918 ACE/HCP4A
Brand TFL
Interchangeable SKF
Bore Dia 90 mm
Bore Dia Tolerance -0.008mm to 0
Outer Dia 125 mm
Outer Dia Tolerance -0.009mm to 0
Width 18 mm
Width Tolerance -0.2mm to 0
Ball Dia 11.112 mm
Ball Qty 24
Contact Angle 25°
Tolerance Class P4 (ABEC-7)
System of Measurement Metric
Seal Type Sealed
Matched Arrangement Available
Preload Available
For Load Direction Angular Contact
Ring Material Chrome Steel
Ball Material Ceramic
Cage Material Phenolic
Dynamic Radial Load 6435 lbf
Static Radial Load 5130 lbf
Lubrication Lubricated
Temperature Range -30° to 110 °C
Max Speed 15500 rpm
Weight 0.46 kg
Price（$） 121.932

Super Precision Angular Contact Ball Bearings S71918 ACE/HCP4A dimension drawing

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Features

Performance Features of S71918 ACE/HCP4A Bearing

S71918 ACE/HCP4A Bearing features a 25° contact angle, optimised for precision angular contact applications.
Its chrome steel rings and ceramic balls enhance durability while reducing friction.

The phenolic cage ensures smooth operation, even at high speeds up to 15,500 rpm.
With a dynamic radial load capacity of 6435 lbf, it handles demanding tasks reliably.

Sealed design and preload availability make S71918 ACE/HCP4A Bearing suitable for varied industrial uses.
Its ABEC-7 tolerance class guarantees consistent performance in precision machinery.

Application

Industrial Uses of S71918 ACE/HCP4A Bearing
S71918 ACE/HCP4A Bearing is commonly used in high-speed machine tools, where its precision and angular contact design ensure accurate performance. The ceramic balls reduce friction, making it suitable for long-running operations.

In automotive applications, S71918 ACE/HCP4A Bearing supports components like electric motors and gearboxes, handling both radial and axial loads efficiently. Its sealed design helps keep contaminants out, extending service life.

For medical imaging devices, S71918 ACE/HCP4A Bearing’s phenolic cage and chrome steel rings provide stability and quiet operation. The P4 tolerance class ensures the precision needed for sensitive equipment.

Automation systems benefit from S71918 ACE/HCP4A Bearing’s matched arrangement, which simplifies installation in robotic arms. The preload option enhances rigidity, crucial for repetitive tasks.