250W NMRV Worm Gear Speed Reducer

250W NMRV Worm Gear Speed Reducer
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Product description

The 250W NMRV worm gear speed reducer adopts rods which are well cooled down so that the machine has good performance in heat conduction.

The worm gear speed reducer can be widely used for food packaging machinery, chemical equipment, wood working machine, crane, construction machinery, compressor, transport conveyor, dredger, engine and transverter, washing machine, metal rolling machine, draught fan etc.

Combination parameters

n2 (r/min) i M2n (Nm) Fr2 (N) fs
Output speed Speed ratio Rated output torque Output shaft radial load Service factor Gear reducer model Electric motor model
373.3 7.5 5.6 542 2.3 NMRV030 63B5/B14 6322
280 10 7.2 597 1.8
186.7 15 10 683 1.3
140 20 13 752 0.9
112 25 15 810 1.0
93.3 30 18 861 0.8
186.7 7.5 11 1315 3.6 NMRV040 71B5/B14 7114
140 10 14 1447 2.8
93.3 15 20 1657 2.0
70 20 26 1824 1.5
56 25 32 1964 1.2
46.7 30 35 2087 1.3
35 40 44 2298 0.9
120 7.5 17 1524 2.6 NMRV040 71B5/B14 7126
90 10 22 1677 2.0
60 15 31 1920 1.4
45 20 39 2113 1.1
36 25 48 2276 0.9
30 30 53 2419 0.9
35 80 42 3153 1.1 NMRV050 63B5/B14 6322
28 100 48 3397 0.8
70 20 27 2503 2.7 NMRV050 71B5/B14 7114
56 25 32 2696 2.2
46.7 30 36 2865 2.3
35 40 46 3153 1.7
28 50 54 3397 1.4
23.3 60 60 3610 1.1
17.5 80 72 3973 0.9
45 20 40 2900 1.9 NMRV050 71B5/B14 7126
36 25 48 3124 1.5
30 30 54 3320 1.7
22.5 40 67 3654 1.2
18 50 78 3936 1.0
15 60 88 4183 0.8
28 50 55 4440 2.4 NMRV063 71B5/B14 7114
23.3 60 63 4719 2.0
17.5 80 76 5193 1.6
14 100 87 5595 1.4
18 50 81 5145 1.8 NMRV063 71B5/B14 7126
15 60 92 5467 1.5
11.3 80 110 6018 1.2
9 100 125 6270 1.0
17.5 80 80 6130 2.4 NMRV075 71B5 7114
14 100 94 6603 1.9
11.3 80 117 7103 1.7 NMRV075 71B5 7126
9 100 133 7380 1.4

If you need the detailed model selection, outline dimension and connection dimension information of the speed reducer, you can find them below:


ZHOUYI is a professional 250W NMRV worm gear speed reducer manufacturer and gearbox supplier since 1990, offer variable speed drive to match electric motors of different power. With manufacturing process in accordance to IEC standard, our company is committed to providing quality motor speed reducers with a variety of model selections and configurations, to meet specific needs for your industrial machine and equipment.

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