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.
| 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.
