SEW-EURODRIVE Products: VARIMOT® Variable Speed Gearmotor

Products

For simple, variable speed applications up to 45 kW

Combining VARIBLOC®^® and VARIMOT®^® variable speed gear units with all types of reduction gear units within the SEW‑EURODRIVE modular concept creates variable speed drives with a low output speed and high output torque. Combining variable speed gearmotors with helical, parallel-shaft helical, helical-bevel and helical-worm gear units has proven effective at low speeds.

Variable-speed gear units are available with DRS.. and DRE.. motors. This means they meet the European requirements on efficiency levels and nearly all international efficiency levels.

Your advantages:

Increased starting torque

Large permitted overhung loads of the reduction gear units

Large number of finely stepped gear ratios of the reduction gear unit, depending on size

Choice of manual or remote speed control

Easy operation

The foot- and flange-mounted versions can also be used to power machines without a reduction gear unit.

Speed can be adjusted mechanically, e.g. with a handwheel, or electromechanically using a servomotor.

VU/VZ series

In the power range up to 45 kW, the VU and VZ designs of the VARIBLOC®^® wide V-belt variable speed gearmotors are used. Typical speed setting ranges are 1:4, 1:6 and 1:8. The U- or Z-shaped power flow and numerous combination possibilities with reduction gear units mean that these speed gearmotors can be supplied in a broad range of designs. They can easily be tailored to the most diverse machine structures.

Technical data
VARIBLOC®^®	Maximum motor power 4-pole [kW]		Possible power flow	Maximum setting range for version
VARIBLOC®^®	IE1	IE2	Possible power flow	Ventilated	Closed
VU / VZ 01	0.55	–	U + Z	1 : 6	–
VU / VZ 11	1.1	0.75	U + Z	1 : 8	1 : 6
VU / VZ 21	3	2.2	U + Z	1 : 8	1 : 6
VU / VZ 31	5.5	4	U + Z	1 : 8	1 : 6
VU / VZ 41	11	9.2	U + Z	1 : 6	1 : 4
VU 51	22	22	nur U	1 : 6	–
VU 6	45	45	nur U	1 : 4	–

	D series
	Friction disk variable speed gearmotors VARIMOT®^® The D series is suited for power a power range up to 11 kW and speed setting ranges 1:4 or 1:5. The contact pressure between the driving pulley and the friction ring required for torque transmission is set automatically. The speed can even be adjusted when the gearmotor is at standstill.

Technical data
VARIMOT®^®	Maximum motor power [kW]	Max. setting range
D 16	1.1	1 : 5
D 26	2.2	1 : 5