The Kollmorgen SR3640-293-16-48B is a robust DC motor from the SR and SRF Permanent Magnet Motors series, featuring a NEMA 42 frame size and dual-channel quadrature encoder, delivering 2700 oz-in holding torque, 90 VDC operation at 3.2 A, and 1800 RPM speed in -40 to 100 C environments.
Servo Supplier is not an authorized distributor. We sell new surplus and refurbished products. All warranties are with Servo Supplier and not the manufacturer.
Conduit Connection (L Configuration)
1/2 NPSC tap with insulating bushing
Conduit Connection (M Configuration)
PG 13.5 tap (no bushing)
Connector Option
MS connector with encoder
Encoder Output
Dual‑channel quadrature with index (Z)
Frame Size
NEMA 42
Front Shaft Diameter (41H, 42H)
0.6250 in (15.875 mm)
Front Shaft Diameter (43H)
0.7500 in (19.05 mm)
Holding Torque per Phase
up to 2700 oz‑in (19.1 Nm)
Max Core Diameter
2.186 ± 0.002 in (55.52 ± 0.05 mm)
Max Length (Model 41H)
5.61 in (142.5 mm)
Max Length (Model 42H)
8.04 in (204.2 mm)
Max Length (Model 43H)
10.56 in (268.2 mm)
Max Operating Temperature (Encoder)
–40 to 100 °C
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.
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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.
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FlexPac
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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
