Spindles and accessories
These spindles are the first choice of the world’s most demanding precision users.
Blockhead series
High axial load capacity in a compact size, offered since 1965. Seven universal spindles in 3, 4 and 10 inch package sizes.
Designed for universal integration, the Blockhead’s combination of accuracy and stiffness makes it the first choice for applications from optics manufacturing to metrology.
| Model | Radial stiffness | Axial stiffness | Axial load, ultimate | Aperture | Rated speed | Details |
|---|---|---|---|---|---|---|
Our smallest Blockhead, capable of 15,000 rpm. | 0.33 lb/µin60 N/µm | 1.0 lb/µin175 N/µm | 115 lb50 kg | 0.75 in19 mm | 15,000 rpm | Details |
Rectangular stator, ideal for horizontal mounting. | 0.45 lb/µin80 N/µm | 1.3 lb/µin230 N/µm | 270 lb120 kg | 1.25 in32 mm | 7,500 rpm | Details |
4RStart here Our standard universal spindle with a round stator. | 0.45 lb/µin80 N/µm | 1.3 lb/µin230 N/µm | 270 lb120 kg | 1.25 in32 mm | 7,500 rpm | Details |
Medium package size with a larger aperture. | 0.5 lb/µin95 N/µm | 0.6 lb/µin110 N/µm | 115 lb52 kg | 2.25 in57 mm | 3,000 rpm | Details |
Six stator faces for convenient mounting. | 1.3 lb/µin230 N/µm | 6.5 lb/µin1,150 N/µm | 1,600 lb725 kg | 3.25 in83 mm | 1,800 rpm | Details |
High load capacity universal spindle with a round stator. | 1.3 lb/µin230 N/µm | 6.5 lb/µin1,150 N/µm | 1,600 lb725 kg | 3.25 in83 mm | 1,800 rpm | Details |
Large capacity spindle with a 6.06 inch clear aperture. | 2.0 lb/µin350 N/µm | 3.3 lb/µin580 N/µm | 650 lb300 kg | 6.06 in154 mm | 1,500 rpm max | Details |
ISO series
Higher radial and tilt loads at higher speeds. Five water-cooled spindles, from 50,000 rpm micro-machining to direct machining of optical surfaces.
Journals are groove compensated bronze or porous carbon. Most models add a crash resistant coating on the thrust bearing and an integrated rotary union for vacuum or clamping through the spindle.
| Model | Radial stiffness | Axial stiffness | Synchronous error | Speed | Details |
|---|---|---|---|---|---|
Water-cooled high-speed spindle for micro-milling, micro-grinding and raster flycutting. | 0.11 lb/µin20 N/µm | 0.37 lb/µin65 N/µm | 1 µin25 nm | 50,000 rpm | Details |
Widely spaced porous carbon journals for improved radial and tilt capacity. | 0.2 lb/µin35 N/µm | 0.8 lb/µin140 N/µm | 1 µin25 nm | 15,000 rpm rated | Details |
Porous carbon journals, for high-speed direct machining of optical surfaces. | 0.2 lb/µin35 N/µm | 1.0 lb/µin175 N/µm | 1 µin25 nm | 18,000 rpm max | Details |
Groove compensated bronze journals, for direct machining of optical surfaces. | 0.6 lb/µin100 N/µm | 1.7 lb/µin300 N/µm | 0.5 µin13 nm | 10,000 rpm max | Details |
Porous carbon journals, for direct machining of optical surfaces. | 0.66 lb/µin115 N/µm | 2.5 lb/µin440 N/µm | 0.5 µin13 nm | 10,000 rpm max | Details |
4RH oil hydrostatic
A step-compensated oil hydrostatic biconic spindle for grinding and hard-turning.
Oil hydrostatic bearings give the 4RH nanometer-level error motion together with high load capacity and high crash resistance.
Accessories
For preparing precision surfaces, and for mounting, driving and sealing a spindle in your machine.
GF-5 Flatstones are precision ground aluminum oxide stones that remove burrs and the swelling around nicks and dents, so mating surfaces make full contact. Faces are diamond ground flat and parallel.
GF-5 Flatstones
Diamond ground flat and parallel, in a standard pair, an open-bond grade for aluminum, and custom shapes.
DetailsAttachments
Everything that connects a spindle to the work and to the machine around it.
- Workholding devices
- Motor drives
- High-precision piloting systems
- Vacuum seals
- Rotary unions
Outside the standard line?
We design and build custom air bearing spindles to the application, including hemispherical, dual diameter, air pad and vacuum-rated designs.
Tell us about your high-precision project.
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