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May 29, 2017
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Contact Us:
Corporate Office:
44 Blackbrook Road
Keene, NH 03431 USA
Tel: 603 357-2511
Fax: 603 358-6174
Precitech air bearing spindles are completely manufactured in house.

Spindle shafts are centerless ground on a high precision Studer CNC grinding machine allowing us to grind the OD of the shaft and faces of the thrust journal in one setup. This ensures squareness and parallelism virtually eliminating once per revolution errors.

The spindles utilize a hardened 440 series stainless steel shaft and bronze journal. Dissimilar materials ensure no permanent damage to the spindle in the unlikely event of spindle rotation without air.

The spindle housings incorporate provisions for liquid cooling.

The Precitech spindles can operate at 85 PSI, eliminating the need for specialized air compressors.

Key Features for the HS-75 Spindle:
50% Improved Stiffness and load capacity over predecessor SP-75

  • Axial stiffness 600,000 lb/in (105 N/μm)
  • Radial stiffness 200,000 lb/in (35 N/μm)
  • Greater radial load capacity of 60 lb (27 kg) at the spindle nose
Key Features for the HS-150 Spindle:
The HS-150 reaches thermal stability in 13 minutes, which is five times faster than the current product SP-150.
  • Axial stiffness to 1,314,000 lbs/in (230 N/μm)
  • Radial stiffness to 743,600 lbs/in (130 N/μm)
  • Greater radial load capacity of 225 lb (102 kg) at the spindle nose
  • Workholding Spindle Max Speed: 10,000 RPM
Key Features for the HD-160 Spindle:
33% improved Stiffness and load capacity over predecessor NT-151
  • Axial stiffness to 2,000,000 lb/in (350 N/μm)
  • Radial stiffness to 1,000,000 lb/in (175 N/μm)
  • Greater radial load capacity of 225 lb (102 kg) at the spindle nose
Work Holding Spindles