The Kollmorgen U9M4H is a high-performance servo motor from the ServoDisc Pancake DC Motors series. Delivering peak torque of 727 oz-in and rated power output of 179 Watts, it operates at 31.9 V with a rated speed of 3000 RPM and max 6000 RPM, weighing just 2.4 kg.
Servo Supplier is not an authorized distributor. We sell new surplus and refurbished products. All warranties are with Servo Supplier and not the manufacturer.
Armature Resistance ± 10%
0.660 Ohms
Back Emf Constant ± 10%
7.50 V/KRPM
Cogging Torque
0 oz-in
Continuous Stall Current
6.8 A
Continuous Stall Torque
65 oz-in / 46 N-cm
Maximum Recommended Speed
6000 RPM
Peak Current
72 A
Peak Torque
727 oz-in / 513 N-cm
Rated Continuous Current
8.6 A
Rated Continuous Torque At 25°c
81 oz-in / 57 N-cm
Rated Continuous Torque At 40°c
72 oz-in / 51 N-cm
Rated Power Output
179 Watts
Rated Speed
3000 RPM
Rated Terminal Voltage
31.9 V
Terminal Resistance ± 10%
0.850 Ohms
We used Servo Supplier to refurbish old drives and buy reconditioned parts. We received great and timely service at a fair price. I recommend them to anyone who has aging equipment and can't find support from their OEMs. Highly recommend.
Bostik Inc.
WE absolutely LOVE Servo Supplier. They are quick, efficient and friendly. Honest too, which is huge in our industry. We deal with many different companies, and these guys are tops in our humble opinion. There has never been an issue with delivery, no warranties, no hidden fees, no surprises. Just what you want in the manufacturing business. Smooth, and we love smooth.
Technomech Inc
First-time customer. The ordering process was completely seamless. The part that we ordered was at our business within 2 days. Which was excellent! We had a piece of equipment down for a little more than 48 hours. Could have been a lot longer had we purchased from one of our normal suppliers.
Steve T. from NF&M International
I found these guys online and needed a somewhat obscure part quickly, and they delivered! Very quick process from the time I requested a quote to the shipping of my items. Great work Servo Supplier team!
FlexPac
Servo Supplier is my go to place for obsolete parts. They always seem to find them and the price is usually good. Any time I have questions they respond very quickly and professionally. I highly recommend them!
Middlesex General Industries
They were very quick to get the drive we needed shipped out to us. They were also very quick to respond and help with some pictures of information on the unit we ordered to ensure we received the right part.
Justin Ball from Miba
Understood our situation, and worked to help us get it solved. Very responsive, and stepped out to keep me informed until the product arrived. Exactly as described, and promised.
Brian Tomlin
This company was fantastic to work with! Very patient with us to make sure we were getting what we needed and extremely quick shipping. Would definitely purchase from them again and again!
Carla Morgan
We asked for a fast turn around and Wake was up to the task!
Darrell Chapman
