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.
Bryant Models We Commonly Repair
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1100
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2209
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257-6
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30538
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37301
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42931
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51301
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CENTALIGN
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CY500
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E9908
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H 962
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H 992
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H 1014
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H 1024
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H 1034
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H 1044
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H 1054
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H 1084
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HA307
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HD220
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HM 115
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HM 1060
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HM 1090
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HM 1100
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HM 1150
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LECTRALINE
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LL1
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LL2
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LL3
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LL4
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MODEL 20
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MODEL B
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UL 9404
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UL 9405
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UL 9408
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UL 9410
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UL 9413
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UL 9417
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UL-94
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UNI-SLIDE
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UT 9404G
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UT 9404M
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UT 9405G
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UT 9405M
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UT 9408G
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UT 9408M
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UT 9410G
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UT 9410M
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WBA12
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WBA25
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WBA29
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WRA 157
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WRA 166
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WRA 174
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WRA 175
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WRA 178
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WRA 180
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WRA 182
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WRA 188
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WRA 193
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WRA 194
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WRA 196
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WRA 200
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WRA 201
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WRA 205
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WRA 209
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WRA 213
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WRA 214
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WRA 217
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WRA 219
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WRA 222
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WRA 223
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Repair History
Bryant Spindle Repair
8000 RPM
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 and the stator/field failed milliohms test. We sent the stator to a local vendor and they were able to rewind it within a week. Once we received the stator back the spindle was put into assembly. Bearings were replaced, the stator was installed and the spindle passed all quality control testing. The spindle was sent to the customer within the 5-15 day lead-time that was quoted.
Bryant L3-1104-2
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 front bearing shoulder had 12 microns of run out. We were able to save the shaft with a kiss grind to the shoulder. We rebuilt the spindle and test ran it at 100,000 rpms with the same type of lubrication system provided with the Bryant machine. After trim balancing the spindle it was shipped back to our customer who was very happy they only had to pay for a spindle rebuild not a new shaft.
Bryant E9908-G-8
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 some processes and systems on the machine to see if we could pinpoint the source of contamination. By working with our customer we found that the air purge system was not functioning properly. After fixing the air purge the spindle has run without symptoms for an extended period of time.
Bryant WBA
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 coolant capability. They are test run and balanced at speed.
Bryant Grinder Modification
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.
