Servotech USA Servo Motor News and FAQ's /blog/ Servotech provides outstanding servo motor repair service. Every servo motor that we repair is dynamically tested on factory drives, cleaned and returned to you in a condition as good as the day you bought it new. We also repair feedback devices, and provide standard and custom replacement encoders. Customers return to us because of our great service, rapid turnaround and commitment to quality. How can I buy a replacement servo motor for less than OEM costs? /blog/bid/38008/Stop-overpaying-for-OEM-servo-motors/ Our technicians can help you locate a direct replacement for your OEM servo motor. If a replacement does not exist, we'll refurbish your servo motors to new condition... How do I replace a resolver? How can I test the resolver? /blog/bid/33851/Resolver-Wiring-Colors-Functions/ Almost all resolvers have 6 leads. Use a voltmeter to ring out the leads and determine which 3 pairs of wire are circuits. Then record the resistance of each circuit... Where can I find servo motor connectors? /blog/bid/33481/Servo-Motor-Connectors-Where-Can-I-Find-Them If you know the manufacturer of your connector, you can go straight to their site. If you can obtain a part number, cross-reference it with a replacement part number... How do I disassemble/rebuild my DC servo motor? /blog/bid/31931/Disassembling-your-own-DC-Servo-Motor/ Testing the armature insulation and circuit correctly are of utmost importance, as is the proper method not to damage windings as you separate the armature from the field frame... Why has my servo motor lost power? What do I do if my motor has lost torque? /blog/bid/29514/Servo-Motor-Torque-Loss/ Does your servo motor have a brake? If there is a brake in your motor then you need to check the voltage going to the brake... How do I fix a resolver overspeed error? /blog/bid/28531/Resolver-Overspeed/ Eliminating causes of resolver overspeed can reveal what needs repair. Are your cables properly shielded? Your cables should have an internal shield that is grounded... How do I prevent damage to my servo motor when removing a coupling? /blog/bid/27088/How-to-Prevent-Damage-to-Your-Servo-When-Removing-a-Coupling/ Are there any setscrews or bolts on the end of the shaft? Pulling the coupling off of the shaft without removing setscrews will damage the shaft... What is the best way to remove/install my heavy servo/spindle motor? How do I use slings? /blog/bid/24004/Tips-on-Using-Slings-to-Remove-and-Install-your-Heavy-Servo-or-Spindle-Motor/ Always use one sling per eye-blot. Never loop the sling through two eye-bolts. Slings are specifically rated for certain loads. These loads vary... What is so difficult about fixing a bearing fit? /blog/bid/20927/What-to-Consider-When-Your-Motor-Has-a-Bad-Bearing-Fit/ Being aware of the side effects of a bad fit will improve the likelihood that your servo gets properly repaired the first time. Broken shafts can occur where they are often missed... How can I reduce noise from my servo system? /blog/bid/18231/Minimizing-Noise-on-Your-Servo-System/ Electrical noise can disrupt the feedback signals (especially with resolvers) and cause the drive to not perform as instructed. Cable selection is crucial... How did oil/coolant get in my motor? How can I keep oil/coolant from getting in my servo motor? /blog/bid/13983/Oil-and-Coolant-A-Killer-of-Servomotors/ Knowing routes in can prevent liquid intrusion from happening again. Replace the shaft seal every time your motor is worked on... What causes premature brush wear on my DC servo motors? /blog/bid/13912/DC-Servo-Motor-Brush-Wear/ Is the head of the brush broken or chipped? If so, then a high bar or piece of mica could be on the commutator. You will need to clean your comm and may need to rewind your armature...