Matsuura Spindle Repair
In this photo the Matsuura Spindle we received for repair had a bent shaft. The shaft was bent do to the machine actuating and applying too much torque on the shaft which potentially caused the spindle to bend. In this spindle repair process Andy is replacing the bent shaft with a new one to ensure the spindle runs correctly. Visit Our Matsuura Page Here
Jesse is running this Robodrill up to 20,000 RPM, and will be bringing the spindle into the spindle balance room to ensure that the spindle will run without any issues. This was a straight spindle repair.
In this spindle repair process you can see how much larger the Johnford St 80 spindle is compared to a basic spindle. In this photo Denton is holding a robodrill from a previous spindle repair. In comparison the Johnford St 80 is a much larger spindle. Northland Tool handles spindle repairs of all sizes. 
Mori Seiki SV500 Spindle Repair
This Mori Seiki spindle was sent to us from a company in Italy to repair. Their sister plant here in the United States has been a customer of ours for spindle rebuild over 20 years.
The spindle was completely disassembled when we received it. At times this makes it difficult to determine the cause of failure but we are able to determine which parts will need to be reworked or replaced in our initial spindle evaluation. Our evaluation showed that the front spindle bearings failed first and were stressed to the point that the inner races split. The drawbar assembly gripper fingers and Belleville washers were worn beyond tolerance. The shaft drive dogs and front cover were damaged from impact. The rear housing was tapered and worn oversize by 25 microns.
We replaced the gripper fingers and Belleville washers to recondition the drawbar assembly. Our machining department repaired the damaged drive dogs. The rear housing and shaft taper where sent to our grinding department where they were green ground, chrome plated then finish ground on one of our Kellenburger ID/OD universal grinders.
Once the reconditioned parts passed our QC process the spindle was released to our clean room for assembly. The shaft was balanced on our schenk balancer and the bearings were installed. Then shaft was gently slid into the housing and the capture was set. After the rest of the spindle was assembled the spindle was placed on our custom test stand for break in and final trim balance. When this was completed the spindle repair was thoroughly tested by our QC personnel to insure micron tolerances are held and the vibration levels were within our standards. View Our Mori Seiki Spindle Repair Page Here.
Omlat Torino Spindle Repair
This Omlat spindle had bearing failure. The front shaft journal was undersized and the drawbar threads were bent. In addition to repairing this spindle the customer wanted it converted to be able to use collet toolholding. We modified the shaft to accept a standard collet system. We also provided collets and collet nuts so the conversion was plug and play. The spindle was shipped back to the customer with our standard 1 year warranty.
PAREIBA MC6416 Spindle Repair
In this photo Denton is taking the temperature of the Pareiba MC6416 Spindle. This part of the spindle repair process is where the spindle is being tested. this is important to the spindle repair process to insure your spindle being repaired to the high quality standards of Northland Tool. If you would like a free estimate for your spindle repair contact Northland Tool here.
Parker Majestic 73A-4 Spindle Repair
6,000 RPM
This Parker Majestic spindle repair is a perfect example of our standard repair.
After receiving the spindle we cleaned and inspected the overall dimensions to determine the cause of failure. We replaced the bearings. We then adjusted the preload, balanced, assembled, broke in and QC tested the spindle.
The spindle then shipped back to the customer with our standard 1 year warranty.
Gildemeister Spindle Repair
This customer had sent the spindle to a different repair facility previously and was not happy with their work. They decided to send it to us.
We broke down, cleaned and evaluated the overall dimensions of the spindle. The bearings were replaced. We machined the spanner holes in nuts and shaft burr. We then adjusted preload, balanced, assembled and broke in the Gildemeister spindle. This customer was happy with the repair, and their mind was at ease knowing they have a full 1 year warranty.
Republic Lagun VMC3516S
8,000 RPM
This spindle came in broken down. It was also missing the drawbar assembly and parts for the shaft tail. Quite often we do not receive all the parts we need for a proper spindle repair. This Republic Lagun spindle also had worn drive dogs. The shaft taper was slightly below the gauge line. The front housing was +50 microns where the 3rd bearing sat.
We ground chrome plated and reground the shaft taper and the front housing in addition to our standard spindle repair.
This was shipped back to the customer before the estimated time we quoted.
Spindle Rebuilding and SNOW
The snow affects even spindle rebuilding. When we get hit with a snowstorm here in the New England area you wouldn’t think that rebuilding a spindle would come to a halt. Well it does. After getting about a foot of snow and heading to work and arriving late we get the announcement that our freight company would not be showing up. This means that certain parts will not be coming in and customers finished spindles will not be shipping out the door. Calling a customer and telling them the spindle rebuild will not ship because we did not receive the parts or because the freight company isn’t coming in is not acceptable. They don’t have the time to understand our problems, they have their own and hearing ours is not what they want. I recently had to tell a customer the rebuilt spindle was on a truck stuck in Indiana on the road. The highway was shut down and their spindle was not moving. They appreciated the update but were not happy about it being “stuck”. When we get a lot of snow we lose power. You cannot build and test run a spindle with out power. Kids are out of school when it snows. We sometimes have to stay home on a “snowday”. As you can see spindle rebuild does come to a halt with the weather. We now wait for the snow to melt and to see grass growing. If you have warm weather send it our way along with your spindle for rebuild.