Selection table for ECR-A4M roller drive

The speed and tangential force values refer to a motor roller with a diameter of 50 mm.

Speed class

Speed

m/min

Number of gear unit stages

i

Ma

Nm

Mapk

Nm

MHpk

Nm

18

1.8 – 24.6

3-stage

45

3.63

8.12

7.94

28

3.0 – 33.6

33

2.60

5.96

5.82

38

4.8 – 60.0

2-stage

18

1.67

3.30

3.10

48

6.0 – 73.2

15

1.38

2.70

2.54

68

8.4 – 100.2

11

1.00

2.00

1.86

i

Gear unit ratio

Ma

Maximum permitted output torque for continuous duty

Mapk

Maximum permitted output torque for short-time duty, maximum of 1 min at 30% cyclic duration factor

MHpk

Maximum permitted holding torque for short-time duty, maximum of 10 min at 50% cyclic duration factor

The torques listed in the table refer to a maximum ambient temperature of 20 °C, higher ambient temperatures lead to reduced power output. The drive is protected from overheating by a thermistor installed in the motor. The actual current profile depends on the application and the mechanical construction of the conveyor.