Axial-Super Precision Bearings

‌FAG’s Axial-Super Precision Bearing (ASP bearing) is a high-precision bearing that is particularly suitable for applications that require high precision and high-speed performance. ‌

Features and Applications

FAG’s ASP bearings have the following features: ‌High Precision‌: These bearings can provide extremely high geometric and rotational accuracy, ensuring stability and accuracy at high speeds. ‌High-Speed ​​Performance‌: ASP bearings are designed for high-speed rotation, which can reduce friction and heat generation, and improve overall performance and efficiency. ‌High Rigidity and Anti-Seismic Performance‌: The bearings use high-quality materials and advanced manufacturing processes to ensure stable performance under high loads and are suitable for various dynamic loads and vibration environments. ​FAG’s ASP bearings have significant advantages in performance: ‌High Precision‌: The precise control of contact angles and ball sizes ensures extremely high geometric and rotational accuracy. ‌High-Speed ​​Performance‌: The optimized rolling element and cage structure reduce friction and heat generation, and improve the performance of the bearing at high speeds. ​‌High rigidity and shock resistance‌: The use of high-quality materials and advanced manufacturing processes ensures that the bearings can maintain stable performance under high load and vibration environments.

As the pinnacle of Schaeffler Group’s thrust bearing technology, FAG Axial-Super Precision Bearings redefine load handling in applications demanding sub-micron axial runout, extreme rigidity, and thermal stability. Designed to exceed ABEC 9 (ISO P2) tolerances, these bearings enable breakthrough precision in wafer steppers, optical grinding machines, and aerospace guidance systems where axial error margins measure in nanometers.

Product Series & Technical Specifications

  1. Single-Direction Thrust Ball (FAG BSA Series)

For ultra-pure axial loads with minimal cross-talk

Contact Angle: 60° optimized for rigidity

Preload Classes: Extra Light (XL), Super Light (SL)

Dynamic Load Capacity: 85 kN (BSA 7014-C-T-P4S)

Speed Limit: dn 1.5 million (oil-jet lubrication)

  1. Double-Direction Thrust (FAG BSB Series)

Bidirectional axial control in compact footprint

Axial Stiffness: 400–800 N/μm

Integrated Alignment: Spherical seats compensate ±0.1° misalignment

Applications: Metrology stages, telescope focus drives

  1. Angular Contact Thrust (FAG BSC Series)

*Handles combined axial-radial loads (15–25° contact angle)*

Rigidity: 500 N/μm axial + 200 N/μm radial

Precision Class: P2S (axial runout ≤0.4 μm)

Conclusion: The Final Word in Axial Accuracy

FAG Axial-Super Precision Bearings transform theoretical limits into industrial reality, enabling:

Zero-defect semiconductor production at 2nm scales

Sub-arcsecond positioning in space telescopes

Nanometer surface finishes in optical manufacturing

Specify FAG Axial-Super Precision Bearings—Where German Engineering Meets Atomic-Scale Perfection.

 

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Product d D B Mass
234448-M-SP
240mm
360mm
144mm
46.2 kg
BSB1547-SU-XL-L055
15mm
47mm
15mm
0.14 kg
BSB1747-SU-XL-L055
17mm
47mm
15mm
0.13 kg
234432-M-SP
160mm
240mm
96mm
12.905 kg
234434-M-SP
170mm
260mm
108mm
17.776 kg
234436-M-SP
180mm
280mm
120mm
23.549 kg
234438-M-SP
190mm
290mm
120mm
24.814 kg
234440-M-SP
200mm
310mm
132mm
31.665 kg
234444-M-SP
220mm
340mm
144mm
36.9 kg
234417-M-SP
85mm
130mm
54mm
2.239 kg
234418-M-SP
90mm
140mm
60mm
2.914 kg
234419-M-SP
95mm
145mm
60mm
3.036 kg
234420-M-SP
100mm
150mm
60mm
3.165 kg
234421-M-SP
105mm
160mm
66mm
4.092 kg
234422-M-SP
110mm
170mm
72mm
5.441 kg
BSB55120-SU-XL
55mm
120mm
20mm
1.18 kg
234424-M-SP
120mm
180mm
72mm
5.81 kg
BSB55120-SU-XL-L055
55mm
120mm
20mm
1.18 kg
234426-M-SP
130mm
200mm
84mm
8.28 kg
234412-M-SP
60mm
95mm
44mm
1.011 kg