{"id":887,"date":"2026-06-25T09:01:10","date_gmt":"2026-06-25T09:01:10","guid":{"rendered":"https:\/\/nmrv063gearbox.com\/product\/ep-nrv040-aluminium-worm-gearbox\/"},"modified":"2026-06-25T09:01:11","modified_gmt":"2026-06-25T09:01:11","slug":"ep-nrv040-aluminium-worm-gearbox","status":"publish","type":"product","link":"https:\/\/nmrv063gearbox.com\/it\/product\/ep-nrv040-aluminium-worm-gearbox\/","title":{"rendered":"EP-NRV040 Aluminium Worm Gearbox"},"content":{"rendered":"

EP-NRV040 — Shaft-Input Industrial Aluminium Worm Gear Reducer<\/h2>\n

The EP-NRV040<\/strong> aluminium worm gearbox is the shaft-input version of the popular NMRV040, sharing the same 40 mm centre distance, internal gear geometry, and die-cast aluminium housing but presenting a solid keyed input shaft rather than a bore-input IEC flange. This configuration is the natural choice when the drive source is a chain sprocket connected to a gearmotor, engine, or line shaft; a belt pulley driven from a central power source; a hydraulic motor with a shaft output; or any other non-IEC driving arrangement. In Australian agriculture, the NRV040 is commonly used in grain-cleaning machinery, feed-mill conveyor drives, and fodder-processing equipment where PTO-driven chain systems are the established standard. In industrial settings, it drives custom automation stages, reciprocating conveyor drives, and batch-mixing equipment in food and chemical plants where the machine builder’s layout places the power source at a shaft rather than an IEC motor face. With the same 3,118 N·m maximum output torque as the NMRV040, the NRV040 delivers full industrial-grade performance in any drive arrangement.<\/p>\n

\"EP-NRV040<\/p>\n

Technical Specifications — EP-NRV040<\/h2>\n

\"NRV040<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nValue<\/th>\n<\/tr>\n<\/thead>\n
Series<\/td>\nNRV (Solid Shaft Input, No Input Flange)<\/td>\n<\/tr>\n
Centre Distance<\/td>\n40 mm<\/td>\n<\/tr>\n
Reduction Ratios<\/td>\n5, 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 80, 100<\/td>\n<\/tr>\n
Rated Input Power<\/td>\nUp to 0.55 kW<\/td>\n<\/tr>\n
Output Speed Range<\/td>\n14 to 280 r\/min (at 1400 r\/min input)<\/td>\n<\/tr>\n
Max Output Torque<\/td>\n3,118 N·m<\/td>\n<\/tr>\n
Input Type<\/td>\nSolid shaft input, no IEC flange<\/td>\n<\/tr>\n
Housing Material<\/td>\nDie-cast aluminium alloy<\/td>\n<\/tr>\n
Worm Wheel Material<\/td>\nPhosphor bronze<\/td>\n<\/tr>\n
Worm Shaft Material<\/td>\n20CrMnTi alloy steel, case hardened, ground<\/td>\n<\/tr>\n
Output Bore Diameter<\/td>\n18–22 mm H7 with keyway<\/td>\n<\/tr>\n
Lubrication<\/td>\nISO VG 220 gear oil (factory filled)<\/td>\n<\/tr>\n
Mounting Positions<\/td>\nB3, B6, B7, B8, V5, V6<\/td>\n<\/tr>\n
Protection Class<\/td>\nIP54<\/td>\n<\/tr>\n
Ambient Temperature<\/td>\n-10°C to +40°C<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\n

NRV040 Performance Table (0.55 kW \/ 1400 r\/min)<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Ratio (i)<\/th>\nOutput Speed (r\/min)<\/th>\nOutput Torque (N·m)<\/th>\nService Factor (fs)<\/th>\n<\/tr>\n<\/thead>\n
7.5<\/td>\n187<\/td>\n1,315<\/td>\n2.5<\/td>\n<\/tr>\n
10<\/td>\n140<\/td>\n1,447<\/td>\n1.9<\/td>\n<\/tr>\n
15<\/td>\n93<\/td>\n1,657<\/td>\n1.3<\/td>\n<\/tr>\n
20<\/td>\n70<\/td>\n1,824<\/td>\n1.0<\/td>\n<\/tr>\n
25<\/td>\n56<\/td>\n1,964<\/td>\n0.8<\/td>\n<\/tr>\n
30<\/td>\n47<\/td>\n2,087<\/td>\n0.9<\/td>\n<\/tr>\n
40<\/td>\n35<\/td>\n2,298<\/td>\n1.6<\/td>\n<\/tr>\n
50<\/td>\n28<\/td>\n2,475<\/td>\n1.3<\/td>\n<\/tr>\n
60<\/td>\n23<\/td>\n2,630<\/td>\n1.3<\/td>\n<\/tr>\n
80<\/td>\n18<\/td>\n2,895<\/td>\n1.0<\/td>\n<\/tr>\n
100<\/td>\n14<\/td>\n3,118<\/td>\n1.0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n