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 More
Mori Seiki NZ2000 Spindle Repair
The Mori Seiki NZ2000 is a CNC turning center. The spindle we repair is the main spindle for turning. It is grease lubricated, stator driven, and capable of running up to 4,000 rpm.
Our inspection of the front quad set of angular contact bearings in this modern turning spindle showed that the #3 bearing had suffered catastrophic failure. When the cage disintegrated, the debris contaminated the adjacent #2 bearing. We did not find evidence of excessive heat, coolant contamination or bearing misalignment, so we could only assume that the #3 bearing had simply reached the end of its useful life. Our dimensional evaluation did find that the rear housing bore was egged 10µ, but fortunately this had not adversely affected the rear roller bearing.
We recommended green grinding, hard chromium plating, and finish grinding the rear housing bore to forestall possible premature failure of the rear roller bearing. We also recommended substituting angular contact bearings with large steel rolling elements, rather than using bearings with small steel balls as found in the spindle. We felt that this modification would provide more appropriate axial and radial rigidity for our customer’s application while reducing their cost and still maintaining an appropriate speed rating.
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.
Does your spindle need repair? GET A QUOTE TODAY
Mori Seiki NH5000 Spindle Rebuild
Our customer sent in this Mori Seiki NH5000 spindle indicating that the spindle was making excessive noise during operation. The bearings felt very rough when… [...]
Mori Seiki NH 4000 DCG Spindle Repair
Our customer informed us prior to sending in this modern horizontal milling spindle that they were experiencing high runout, likely due to a crash. We… [...]
Mori Seiki SVD-403 Spindle Repair
When this Mori Seiki SVD-403 spindle arrived at our facility the first thing we noted was that the bearings were very noisy. After disassembly, we… [...]
Mori Seiki SH-403 Spindle Repair
When this Mori Seiki SH-403 spindle arrived at our facility we completed a full breakdown and evaluation. Upon inspection, we noted that the spindle shaft… [...]
The success of any precision machinery relies heavily on various intricate components working seamlessly in unison.Read More