The Bridgeport Torq-Cut 22 is a smaller CNC vertical machining center. It comes fitted with a grease lubricated and belt driven spindle capable of running up to 7,500 rpm.
Read MoreKellenburger 1000U Workhead Spindle Repair
The Kellenberger 1000U workhead is a CNC cylindrical grinder spindle. It comes equipped with a grease lubricated and belt driven spindle capable of running up to 1,800 rpm.
CHALLENGE
This spindle from a universal cylindrical grinder came to us as a complete workhead assembly. It has a bearing complement which includes two different bearing types. Several tapered roller bearings are used to distribute the weight of the workpiece because they are capable of handling large radial & axial forces. The workhead also incorporates several radial bearings which also serve to distribute the load while reducing the coefficient of friction for less rolling resistance.
SOLUTION
We replaced all the bearings, seals, o-rings, and bolts.
Because we received the entire workhead, we were able to inspect the spindle drive motor but it did not require any service other than new drive belts.
RESULT
After reassembly of all components, adjusting bearing preload, and undergoing break-in and testing procedures, this spindle passed our final quality inspection before being returned to our customer with a 1-year warranty.
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More Case Studies
Repair History - Here are examples of similar spindle repairs that may contain additional information that will help you. If you have additional questions, please contact us.
It’s a fact of machining — eventually, even top-of-the-line turning machines will experience a spindle failure. Spindles endure tension, torsion, heavy loads, and speeds up to and beyond 150,000 RPM, to name a few of the standard stressors.
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