This spindle came to us and customer stated that the spindle had severe vibration but no tool retention issues. Incoming test showed the drawbar force was low and the bearings were very rough. The spindle was disassembled. We found catastrophic failure of the front bearing, front housing where the #2 bearing sits was oversized and fretted. This spindle is a grease injected spindle, we typically convert to grease for life bearings.
The customer was quoted for replacing bearings with grease for life bearings, a new drawbar spring, and grind, chrome plate and finish grind of the housing. The spindle was approved. We ground the housing on our Kellenberger grinder. We then balanced and assembled the spindle with all of the required parts. The spindle was tested and passed our quality control department.
The customer now has spindle with no vibration. They are happy with the fact that the spindle is set for life and no longer have to purchase grease for the injection system.
Does your spindle need repair? GET A QUOTE TODAY
Possible cause of failure: Catastrophic rear roller bearing failure of the likes we have never seen before. Rear housing 30 microns tight, tapered and egged #2 bearing failed. cage broken. Probab [...]
This spindle came to us with taper and drawbar damage. We are able to grind plate grind the BIG PLUS taper back to original specifications. We also rebuilt the drawbar to make sure there were no more [...]
15,000 rpm A spindle failing during a customer’s busy time is not good thing. Our customer called and needed this spindle repair done as soon as possible. We received the spindle and found th [...]
Possible cause of failure: Catastrophic failure of the #1 front bearing. Bearings most likely failed from usage fatigue. Drawbar shaft has severe wear in the area were the gripper fingers attach a [...]
Possible cause of failure: Customer said spindle and tool were warm to the touch at 6,000rpm. Bearings are noisy and a little rough. Taper has light pock marks Repair action: Clean, in [...]
I really didn’t expect this; You guys really pulled it off! My many thanks to Sandy, Louis and your outstanding crew for helping us get back into production.
Lou all in all everything is running good. Just had a call from Sandy just the other day, its funny great minds think alike. Its great not to be sending spindles out on a regular basis since you addressed my problems, but I know they will still be coming sooner or later. Never a problem when we get them back , run better than new. Hope everything is ok there. Please tell everyone there that we here appreciate everything that you do to keep us up and running and the quick turnarounds. Have delt with the rest now deal with the best. Have a great week end and up and coming holiday.
Thank you Debbie just received spindle today and WOW ! what a nice job. Can’t wait to use it. Thank the Northland team for us for a job well done
Both of the spindles that you repaired are on the machines and running great. We don’t have any spares for those grinders. We probably will not be purchasing a spare, as you have been able to turn around the repairs quickly and the price of a spare is cost prohibitive.
I am writing to thank Northland Tool for going the extra mile and saving my company from expensive machine downtime and expensive repairs. We have always sent our Chiron spindles for repair as a shaft with bearings. None of our previous rebuilders pointed out the bearing fretting or the fact that the housing in the machine was out of tolerance and causing premature failure to the spindles. After Northland fixed the housings the spindles have never sounded as good or run as well! Great job guys!
The detailed cause of failure reports and the expert technical advice that Northland Tool provides is bar none the best I have ever seen. We struggled to keep two of our large our milling spindles running for longer than 6 to 12 months. Northland Tools evaluation showed that the hydraulic nuts were not holding the assembly together causing premature spindle failure. We discussed this in detail and mutually decided to modify the spindle shaft to prevent this from occurring again. The first spindle we performed this on is still in the machine running like new after 3 years. That’s over three times the life of previous repairs and it’s still going strong. Easily over $40,000.00 of savings so far on that one machine and counting.
Your people go above and beyond the call of duty when it comes to spindle repair. When we had difficulty with the spindle installation and we were able to talk directly to a spindle technician that helped us troubleshoot the issue it helped us out of a bind. We have sent several spindles to you and have nothing but great things to say.
Thank you for your attention with my quick turn spindle repair. Your status updates allowed me to plan around machine downtime and I now know that you deliver on your promises. In the past other spindle repair vendors talked a big game and consistently failed to deliver. You not only delivered my spindle before the due date but you kept me informed throughout the entire repair process.
You performed a miracle with my BIG PLUS spindle. After crashing the spindle severely damaging the taper we found that a replacement spindle was not only cost prohibitive but had a long delivery. Your repair was a fraction of the cost of new and you never would know that the spindle was damaged to the extent it was.
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…