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 MoreMeyrat MBC-70 D14/12 Spindle Repair
The Meyrat MBC-70 D14/12 is a Swiss made, belt-driven spindle with grease lubrication and operates at up to 12,000 rpm. These spindles are typically used on Walter CNC tool grinding machines.
CHALLENGE
The customer reported that their Meyrat MBC-70 D14/12 spindle was noisy during operation.
Upon initial inspection, the spindle was difficult to rotate by hand and the bearings were very loud. Further investigation revealed catastrophic failure of the front side bearing pair as the cages were completely destroyed. Black dust on the shaft may indicate that the belt was rubbing on the front side housing. No significant dimensional deviations were noted on any critical surfaces.
SOLUTION
The following actions were performed for this Meyrat MBC-70 D14/12 spindle repair:
- Thorough cleaning of all components
- Replace ceramic bearings
- Replace o-ring
RESULT
After adjusting bearing preload, reassembly of all components, 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.
DETAILED CAUSE OF FAILURE
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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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