Bryant grinder was a leader in the grinding industry in the United States for decades. The large installation base of Bryant[...]Continue Reading
Bryant grinder was a leader in the grinding industry in the United States for decades. The large installation base of Bryant spindles has given Northland Tool & Electronics the ability to repair just about every type of Bryant spindle that has been produced. As we do most of our grinding in house we are very aware of the precision you need from your Bryant spindle rebuild. Our Bryant customer base consists of bearing manufacturers, aerospace, automotive and medical device manufacturers.
Recently an automotive company in the mid-west contacted me regarding their Bryant grinding spindles. Their ID Bryant spindles were only lasting from 1 week to 3 months between repairs. The repair company they were using was voiding the warranties for contamination and charging them for full repairs. At $5000.00 or more each repair the costs were adding up. They felt a repair company should be trying to solve the cause of failures and reduce the total repair expenditures. That’s when they called Northland Tool & Electronics. We evaluated their process and put a program in place to identify the failure causes and provide solutions for them. Upon evaluation of the first few spindles we found that the previous repair facility had used inferior bearings that were not capable of the speed the spindles were run at. The spindles were also filled with coolant causing the bearings to fail prematurely. The more we dug into the spindles the more we found. Inferior machining/grinding practices were used and major spindle parts had been replaced incorrectly changing the dynamics of the bearing lubrication system. When we completed the testing process we determined the most cost effective route to eliminate the failures. The previous poor workmanship and a spindle design that was prone to contamination needed to be fixed. We modified the spindle to resist coolant contamination and fixed or replaced the damaged parts. We also gave the customer testing procedures to implement during installation to insure longer spindle life. Our repairs are now 50% cheaper than their previous vendor and we have increased the spindle life to years instead of months.[...] Hide Details
Upon arrival, every spindle is logged into our production tracking software system. Any issues associated with incoming condition as related to transit are noted.[...]Continue Reading
The spindles are prioritized and moved to either the disassembly technicians or to the spindle run-up room, depending on the circumstances. Our techs carefully break down the spindle into its component parts while meticulously noting their general condition as well as specific damage to them. They also photograph the process and perform a full dimensional inspection to identify excessive wear which may help identify the cause of failure.
Once the initial disassembly and evaluation are completed, the spindle is given a second look by our production manager who reviews & completes the evaluation. He will identify the mode of failure and all pertinent issues, as well as recommended corrective actions. Many evaluations are not complete until the production manager consults with the head of our grinding & machining department. We often have recommendations for additional steps the customer can take to prevent premature spindle failure in the future. We call on our 30 plus years of experience rebuilding spindles to come to these conclusions.
After our purchasing department sources all replacement part costs & lead times, the quote is generated, given a final check and communicated to the customer for approval. Once we have received the approval, production is scheduled and parts are ordered. All spindle parts are carefully cleaned and any grinding or machining operations are completed. Only when all components are available and qualified does the spindle proceed to our spindle assembly technicians. These highly trained professionals assemble all the spindle components and then perform a rigorous break-in process which may include dynamic balancing as well as thermal & vibration analysis depending on the type of spindle. After a final quality control check is performed, the spindle is given back to our shipping department, carefully boxed to minimize the possibility of in-transit damage and shipped back to you, our customer. Hide Details
Possible cause of failure: Stator has burnt windings. Rear bearing inner race is spalled. Rear housing ID grooved from ball cage ball fretting. Lower edge…
Bryant 217-G-3-22638, 14,000 RPM belt drive, permanent grease lubrication This grinding spindle was sent to us by an MRO integrator on behalf of their customer,…
Possible cause of failure: Bearing failure from coolant contamination, bearings are full of coolant sludge. Screws loosened in front housing cover. Front oil injector is…
Bryant HA30703H7 Spindle Rebuild This spindle comes equipped with through the shaft coolant capacity. This tends to splash coolant back onto the face of the…
This oil mist lubrication, electric drive spindle was sent to us for spindle repair. The incoming inspection of the spindle showed that front bearing failed…
100,000 rpm Oil Mist Lubrication The tool to this spindle was broken off inside the pilot. After we extracted the remaining tooling we found the…
This spindle failed from contamination of the front bearings. During our quote follow up call we discussed the failure with our customer and recommended checking…
ID grinding spindle 70,000 rpm We support all types of Bryant grinding spindles high to low speed. This is a WBA type with through shaft…
Does your spindle need repair? GET A QUOTE TODAY
At Northland, we take pride in our expert knowledge of every brand we repair-please see the list of models we repair below. If you do not see your particular model please contact us, we have probably repaired one just like it in our over 30 years of spindle rebuilding:
From coolant contamination to bearing failure to crashes, Northland knows that there are a variety of issues that will affect the performance of your spindle-and we’re prepared to handle them all. However, the common problems associated with this brand are:
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.
Cincinnati T-35, 4000 RPM, oil mist lubrication, belt driven Our customer asked us to modify the shaft of this horizontal machining center spindle during the rebuild process. This manufacturer of aerospace components uses two types…Read More