This Guering Spindle had damaged rear threads. In these photos Dennis is indicating the line in preparation for the repair process.
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Fortuna Spindle Repair | ID & OD Grinder
In these photos, Scott is grinding a Fortuna ID Grinding shaft on one of our Kellenberger Grinders.
GMN Spindle Repair TS70C X120
This GMN Spindle is an tool and cutter grinder and runs at 10,000 rpm. This is one the smaller spindles I’ve seen in the shop since last February when I started here. This spindle has a special face to taper contact similar to the BigPlus taper which helps prevent tool chatter. I was able to snap some shots of Denton setting up the spindle on the test stand and running it up:
Parker Majestic 73A-4 Spindle Repair
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
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
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
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.
Comparing lead times?
We recently had a customer inform us that they were trying someone else due to the lead time we quoted them. We understand that from the customer’s point of view that they needed their spindle yesterday, in a manner of speaking. This particular customer did not have a spare and the OEM did not have any in stock. This certainly put the customer in a bind; so they did what they felt they had to in order to minimize downtime. This customer explained to us that they were happy with our quality and prices, and was hesitant to go elsewhere.
From our stand point this spindle had to have a grind chrome plating and finish grind to bring it back to specs; unfortunately this takes some time. The estimated lead time we quoted them was 5-10 business days. We always do our best to get a customer’s spindle back to them as quickly as we can. We understand how important it is to keep their business running smoothly.
They ended up sending the spindle to another vendor, who quoted them a 5 day lead time. This was their lead time for anything sent in regardless of how much work needed to be done.
We received a call from this customer after the spindle had been repaired by the other vendor. The customer let us know the other vendor took 7 weeks to return the spindle. The customer has since sent us another spindle to be rebuilt.
When it comes to turn around time we try our best to get the customer what they want. If we can’t do this we will tell you the truth. The truth hurts sometimes but it is for the best.
Van Norman Regulating Wheel Repair
Van Norman Regulating Wheel Repair
This spindle failed as a result of bearing contamination. This is the most common cause of failure for spindles.
We repaired this spindle with our standard repair process. We cleaned and inspected the overall dimensions. The bearings were replaced. We then adjusted the preload, balanced, assembled and broke in the spindle. The final step in our process is a thorough inspection by our quality control technician in our clean room.
GMN TSEV-100SDU Spindle Repair
GMN TSEV-100SDU Spindle Repair
5,000 RPM
There were a few things that needed repair on this spindle. The grease was washed out of the front bearings. The grippers were missing so we replaced those. A housing rod had bent threads and needed to be replaced. The HSK taper had 20 microns runout which we corrected with a grind chrome plate and regrind bringing it back to specs. The front nuts also needed to be repaired. This was all done, inspected by our quality control department and returned to the customer.