How to Read a Motor Roller Model Code

A Worked Example

Take the code DG50-AS-3PH380V-265L-10M-S3-DS. Each block is a decision you make when specifying the roller.

Choose the Tube Face First

Tube face is the working width of the roller and is fixed by your product width and conveyor frame. It cannot be changed later without changing the frame, so it is decided before speed, coating or drive end.

Diameters of 50, 57, 60 and 76 mm are standard, and larger sizes are made to order.

Speed and Pulling Force Move in Opposite Directions

Within one motor size, a faster rated speed means lower tractive force and lower torque. The published tables for the AS standard type at 22 W show this clearly: at 1.8 m per minute the tractive force is 321 N, at 10.2 m per minute it is 59 N, and at 39.5 m per minute it is 15 N.

The practical rule is to select the slowest speed that still meets your throughput, because everything else — how many idlers the roller can slave, how heavy a carton it can start — improves as speed comes down.

Type: Standard, Short or Accumulation

AS standard suits ordinary transport. ASs shortens the motor section where the frame is tight at one end. AU adds an internal clutch so the roller can keep turning while product accumulates on top of it, which is what allows a line to queue product without back pressure.

Surface and Drive End

The tube surface is chosen for grip and environment: galvanized or chrome for general use, PU or NR coating to lift friction on light cartons, SUS304 or SUS201 where the roller is washed down.

The drive end decides how the roller passes motion to its neighbours: sprocket, poly-V pulley, V pulley, timing pulley or O groove. Special requests also cover brake and waterproof versions.