YQNMRV

NMRV / NRV single-stage worm gear reducers

Single-stage worm gear reducers in sizes 025–150 with a hollow output shaft. The NMRV version takes an IEC motor directly through an input flange and hollow input bore; the NRV version has a solid input shaft for a coupling or pulley. Ratios from 5 to 100 with a wide choice of output shafts, flanges and mounting positions.

Sizes

NMRV: 025, 030, 040, 050, 063, 075, 090, 110, 130, 150; NRV: 030–150

Centre distance

25–150 mm

Ratio

5–100 (5, 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 80, 100)

Motor power (NMRV tables, 4-pole, 1400 r/min)

0.06–15 kW

Output speed (1400 r/min input)

14–186.7 r/min

Output torque (selection tables)

NMRV: 2.4–1452 N·m; NRV: 13–1550 N·m

Hollow output bore

Ø11–50 mm, H8

NRV input shaft

Ø9–35 mm, j6

Housing material

025–090 die-cast aluminium alloy; 110–150 cast iron

Lubrication

025–090: synthetic oil ISO VG 320 (−25…+50 °C); 110–130: mineral oil ISO VG 460 (−5…+40 °C) or ISO VG 220 (−5…+25 °C)

Oil quantity (110 / 130 / 150, position B3)

2.5 / 4 / 5.4 l

Max. oil temperature

95 °C

Recommended input speed

not above 1500 r/min

Oil change

first after 800 h, then about every 1500 h

Weight without motor

≈0.7 kg (025) – 84 kg (150)