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
Kellenberger Spindle Repair
Kellenberger began building universal grinding machines in Switzerland in 1917 and their products are found in machine shops and manufacturing[...]Continue Reading
Kellenberger began building universal grinding machines in Switzerland in 1917 and their products are found in machine shops and manufacturing plants around the world. About fifty years ago they began to specialize in universal cylindrical OD/ID grinding machines. This is still their focus today, and now they are part of the Hardinge group of products. Whether your Kellenberger spindle uses ball bearings or oil film bearings, Northland Tool has the expertise to rebuild it to OEM specifications.
Northland Tool & Electronics utilizes two Kellenberger universal grinders in our spindle repair facility. Keeping our grinding capacity in-house gives us two distinct advantages over most of our competition. Not only are we able to guarantee micron tolerances, but we are able to control our work schedule to insure the best possible turn time on your spindle rebuild.[...] 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
Kellenberger 1000U Spindle Repair
When disassembling the spindle, our service technician noted that all exterior and interior cavities were heavily contaminated with coolant. In both the workhead spindle and…
Kellenberger Kel-Vision URS 125 Spindle Repair
Our customer indicated that this OD grinding spindle would load up in operation and eventually lock up. When we disassembled and evaluated the spindle, we…
Kellenburger 1000U Workhead Spindle Repair
This spindle from a universal cylindrical grinder came to us as a complete workhead assembly. It has a bearing complement which includes two different bearing…
Kellenburger Kel-vision URS125 Spindle Repair
This Kellenburger Kel-vision URS125 spindle was seized incoming. After disassembling and evaluating the spindle, we noted that the shaft bearing journals and bronze oil bearings…
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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:
- Bearing failure from contamination, crashes or loss of lubrication.
- Worn or damaged tapers and pilots.
- Fretting and other wear of housings and bearing journals or bushings.
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