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
Kitamura Spindle Repair
Kitamura Machinery began to produce a variety of industrial machinery over eighty years ago, and by the late 1960’s had[...]Continue Reading
Kitamura Machinery began to produce a variety of industrial machinery over eighty years ago, and by the late 1960’s had begun to focus on the design and manufacture of machining centers. Many Kitamura machines are offered with several high speed spindle options. Kitamura spindles are often manufactured with the capacity to utilize Big-Plus dual contact tooling.
Northland Tool & Electronics has extensive experience rebuilding a wide variety of spindles found in Kitamura horizontal & vertical machining centers as well as bridge-type models. We are familiar with the particular challenges associated with the rebuild of the higher speed spindles, and we were one of the first spindle rebuilding facilities to achieve factory authorization to rebuild Big-Plus spindles. If you are currently using, or intend to take advantage of the Big-Plus functionality of your spindle, you must be sure that your rebuilder has the equipment and expertise required to properly rebuild these spindles to OEM specification.[...] 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
Kitamura Mycenter 4XD Spindle Repair
Our customer experienced a machine crash that caused severe damage to the spindle. They sent a second, identical spindle in case we could reuse parts…
Kitamura Mycenter HX1000i Spindle Repair
This spindle arrived at our facility seized because of a catastrophic failure of the rear roller bearing. When the cage that normally contains the rollers…
Kitamura Mycenter 5X Spindle Repair
Prior to the arrival of this Big-Plus capable spindle, our customer indicated to us that the tool was deflecting radially during cuts. Our first observation…
Kitamura Mycenter 2X Spindle Repair
This Kitamura Mycenter 2X spindle was sent in with a broken orientation ring and the screws broken off in the low speed gear. The grippers…
Kitamura Mycenter 3XIF Spindle Repair
This Kitamura Mycenter 3XIF spindle suffered a catastrophic rear roller bearing failure which allowed debris to contaminate the #3 and #4 bearings (rearmost in front…
Kitamura Mycenter 3XiH Spindle Repair
Prior to shipping this high speed vertical machining center spindle to us, our customer indicated that it was very noisy when operated above 12,000 RPM.…
Kitamura Mycenter HX400iF Spindle Repair
Our customer indicated that this horizontal machining center spindle was humming and producing a poor finish. When we broke the spindle down for evaluation, we…
Kitamura Mycenter H-400 Spindle Repair
When this Kitamura Mycenter H-400 spindle arrived at Northland Tool and Electronics we completed a full breakdown and evaluation. Upon inspection, we found that the…
Kitamura Mycenter 2X Spindle Repair
This customer called and needed this spindle repair done within 5 days. We received the spindle and expedited the breakdown process. The rear roller bearing…
Kitamura Mycenter 2Xi Sparkchanger Spindle Repair
The Customer did not provide the drawbar assembly nor the drive gear and mounting hardware. After disassembling the spindle, we noted that the rear roller…
Kitamura Mycenter 3 Spindle Repair
Our customer sent in this Kitamura Mycenter 3 spindle indicating that there was gear oil leaking from the spindle nose. We performed an incoming pressure…
Kitamura Mycenter H400 Spindle Repair
This Kitamura Mycenter H400 was sent in to us for a full evaluation. Upon inspection, we noted that the front bearing pair felt very rough…
Kitamura Bridge Center-8 Spindle Repair
This Kitamura Bridge Center-8 spindle’s bearings were noisy and felt rough when rotated by hand in assembly incoming. After disassembly, we noted that the front…
Kitamura HX400I Spindle Repair
This Kitamura HX400I spindle had been crashed and the front bearings were noisy when rotated. The shaft taper was cracked on both sides where the…
Kitamura Mycenter 0 Spindle Repair
This Kitamura Mycenter 0 spindle was pulled by our customer because it started “growling” when it was run. Upon breakdown and evaluation, we first noted…
Kitamura Transmission Repair
We received the transmission and found both external pulley shafts OD’s were very worn. This looseness caused damage to the shaft, drive keys and nut…
Kitamura HX250IF Spindle Repair
This Kitamura HX250IF spindle was sent in for a full breakdown and evaluation of the spindle. After disassembly and evaluation, we noted that the bearings…
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MODELS WE REPAIR
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:
- Bridgecenter bridge-style models
- Mycenter–H series horizontal machining centers
- Mycenter–HX series horizontal machining centers
- Mycenter-2X series vertical machining centers
- Mycenter-3X series vertical machining centers
- Mycenter-4X series vertical machining centers
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 or high-speed crashes.
- Worn or damaged tapers.
- Fretting and other wear of housings and bearing journals.
- Rotary union failure.
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