HS7012-C-T-P4S-UL FAG Super Precision Angular Contact Ball Bearing 60x95x18

HS7012-C-T-P4S-UL FAG Super Precision Angular Contact Ball Bearing 60x95x18

HS7012-C-T-P4S-UL FAG is a super precision single row angular contact ball bearing engineered for CNC spindle systems, grinding machines and high speed industrial machinery requiring extremely high rotational accuracy, low vibration levels and stable operation at elevated spindle speed.

The FAG HS spindle bearing series is designed for precision machining applications where thermal stability, spindle rigidity and rotational precision directly influence machining quality and dimensional accuracy.

Unlike standard angular contact bearings, HS spindle bearings use:

• optimized internal raceway geometry
• smaller steel balls
• precision surface finishing
• reduced centrifugal force generation
• high speed cage design

This spindle bearing construction provides:

• extremely high rotational speed capability
• low friction torque
• reduced heat generation
• high spindle rigidity
• improved vibration performance
• stable rotational accuracy

The HS7012-C-T-P4S-UL bearing dimensions are:

• inner diameter d = 60 mm
• outer diameter D = 95 mm
• width B = 18 mm

The designation HS7012-C-T-P4S-UL contains important spindle bearing configuration information:

• HS = high speed spindle bearing series
• 7012 = angular contact spindle bearing series
• C = 15 degree contact angle
• T = laminated phenolic fabric cage
• P4S = super precision spindle tolerance class
• UL = universal matching with light preload

The 15 degree contact angle designated by C is optimized for:

• very high spindle speed
• reduced friction
• lower thermal expansion
• minimized running resistance
• stable precision during operation

The T cage designation indicates a laminated phenolic fabric cage guided on the outer ring. This cage design provides:

• reduced rotating mass
• lower vibration levels
• stable operation at elevated temperature
• improved lubrication behavior
• suitability for continuous high speed operation up to approximately 100°C

The P4S precision class indicates:

• ultra precise dimensional tolerances
• minimized radial runout
• high rotational accuracy
• spindle grade vibration characteristics
• precision higher than standard P4 class

The UL designation means universal matching with light preload. Bearings marked UL may be mounted:

• back to back
• face to face
• tandem arrangement

without additional preload selection during assembly.

According to FAG spindle bearing technical data:

• dynamic load rating approximately 18,6 kN
• static load rating approximately 12,5 kN
• grease lubrication speed limit approximately 20000 rpm
• oil lubrication speed limit approximately 32000 rpm

HS7012-C-T-P4S-UL FAG spindle bearings are commonly installed in:

• CNC machining centers
• grinding spindle systems
• high speed milling machines
• aerospace machining equipment
• robotic spindle assemblies
• measuring machinery
• precision automation systems
• industrial high speed spindles

The phrase HS7012-C-T-P4S-UL FAG 60x95x18 super precision angular contact spindle bearing is frequently searched during CNC spindle rebuilding and high speed machine tool servicing operations.

Construction and operating characteristics

HS7012-C-T-P4S-UL FAG uses a spindle optimized angular contact design developed for extremely high rotational speed and controlled preload operation.

Main construction features:

• single row angular contact bearing
• spindle optimized internal geometry
• 15 degree contact angle
• P4S super precision class
• laminated phenolic cage
• universal matching UL
• low friction internal design
• open bearing construction

The optimized spindle geometry reduces centrifugal loading on rolling elements and maintains spindle rigidity during continuous high speed machining operation.

Industrial application areas

FAG HS spindle bearings are developed for industrial systems requiring very high rotational precision and thermal operating stability.

The HS7012-C-T-P4S-UL FAG model is commonly used in:

• CNC machining centers
• grinding machines
• precision milling systems
• high speed spindle assemblies
• aerospace machining systems
• robotic machining equipment
• industrial automation machinery
• precision measuring devices

Super precision spindle bearings are especially important in applications where spindle vibration and rotational accuracy directly affect machining quality and production repeatability.

Technical specification

Type: Super precision angular contact ball bearing

Bearing designation: HS7012-C-T-P4S-UL

Manufacturer: FAG

Bearing type: High speed spindle bearing

Design: Single row angular contact design

Contact angle: 15 degree

Accuracy class: P4S super precision

Preload arrangement: UL universal light preload

Cage: Laminated phenolic fabric cage

Sealing: Open bearing without seals

Inner diameter: 60 mm

Outer diameter: 95 mm

Width: 18 mm

Dynamic load rating: Approx. 18,6 kN

Static load rating: Approx. 12,5 kN

Grease speed limit: Approx. 20000 rpm

Oil speed limit: Approx. 32000 rpm

Weight: Approx. 0,45 kg

Applications: CNC spindles, grinding machines, milling machines, high speed machining systems

FAQ

What does P4S mean in FAG spindle bearings?

P4S indicates a super precision tolerance class developed for spindle applications requiring extremely low runout and high rotational accuracy.

What does UL mean in HS7012-C-T-P4S-UL?

UL means universal matching with light preload allowing paired mounting without additional preload adjustment.

Why is a 15 degree contact angle used in spindle bearings?

A smaller contact angle improves high speed capability and reduces frictional heat generation during spindle operation.

What is the function of the T cage?

The laminated phenolic fabric cage reduces rotating mass, vibration and friction during high speed spindle operation.

Where are HS spindle bearings commonly used?

They are commonly installed in CNC machine tools, grinding spindles, milling machines and high speed machining centers.