Catastrophic bearing failure was the main cause of this spindle malfunction Continue reading to learn how Northland Tool performed this repair and converted a Weiss GHK 176239 spindle from grease-injected to permanent grease lubrication……Read More
Tree VMC 1000 Spindle Repair
The Tree VMC-1000 is a CNC vertical machining center. It comes fitted with a grease lubricated and belt driven spindle capable of running up to 8,000 rpm.
This Tree VMC 1000 spindle was completely disassembled when it arrived at our shop for evaluation and quoting. The customer did not provide the original bearings, but they did send some new bearings and a seal. Unfortunately, some of the bearings were not appropriate for the spindle. The tooling taper, drive dogs, and inner bearing spacer all had significant damage. The rear of the drawbar shaft had also been sheared off.
The first step upon approval of our quote was to have our in-house grinding and machining department manufacture a new inner bearing spacer, and perform a grind, chrome plate, and finish grind of the tooling taper. We reassembled the spindle with all new bearings, drawbar shaft, bellevilles, drive dogs, o-rings, assembly c-clips, snap rings, and assembly screws.
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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Tree J-425 Spindle Repair
Our customer said that this Tree J-425 spindle had horizontal play and was not milling accurately. Upon inspection we noted that the taper was slightly… [...]
Tree VMC-1260 Spindle Repair
This Tree VMC-1260 spindle was sent in for a full breakdown and evaluation. After close inspection, it was noted that the spindle bearings were severely… [...]
Running this spindle too long caused deformed ball bearings and damage to the outer race Damage to the outer race is consistent with prolonged operation after spindle exhibited initial signs of needing to be rebuilt Every spindle rebuilt by North…Read More