The model 4R Twin-Mount spindle combines a high-power brushless-DC motor (liquid cooled) with a model 4R BLOCK-HEAD® air bearing spindle for the most demanding applications. This is the spindle to use in a rapid-cycle, start/stop operation, or when the ultimate in speed stability is required.
Features
- Model 4R BLOCK-HEAD® air bearing spindle
- Cast-iron housing for horizontal axis or vertical axis operation
- Custom faceplate per customer specifications*
- Dynamically-balanced spindle rotor
- Brushless-DC motor mounted directly to the spindle
- Resolver motor commutation for smooth rotation
- Motor controller with wide speed range
- Available with integral 1 hp AC induction motor
- All required connectors and cables
Performance
| Speed Ranges: |
0-2,000 rpm 0-5,000 rpm 0-10,000 rpm |
Torque: Up to 60 lb-in continuous
Speed Regulation: As low as 0.0001%
Motor performance can be tailored to your application. Motors with narrower speed ranges will have better low-speed torque and speed regulation. Load capacity, stiffness, and accuracy of the 4R BLOCK-HEAD® air bearing spindle are unaffected by the motorization process.
Options
- Motor style
- Encoders of various levels of precision
- Vacuum work holding
- Water cooling for motor
- Piloted faceplate for ultra-accurate interchangeable chucks, collets, or wheel mounts
Applications
- Ultra-precise workheads for I.D. and O.D. grinding
- Ultra-precise lathe headstocks
- Spin table for Moore G-18 jig grinder
- Spin table for roto grinding on a surface
- Flycutter spindle for ultra-flat mirrors
- Grinder wheelheads, especially for diamond wheels
- Roundness testers