{"id":891,"date":"2026-06-25T09:01:16","date_gmt":"2026-06-25T09:01:16","guid":{"rendered":"https:\/\/nmrv063gearbox.com\/product\/ep-nrv090-aluminium-worm-gearbox\/"},"modified":"2026-06-25T09:01:16","modified_gmt":"2026-06-25T09:01:16","slug":"ep-nrv090-aluminium-worm-gearbox","status":"publish","type":"product","link":"https:\/\/nmrv063gearbox.com\/ar\/product\/ep-nrv090-aluminium-worm-gearbox\/","title":{"rendered":"EP-NRV090 Aluminium Worm Gearbox"},"content":{"rendered":"

EP-NRV090 — Shaft-Input Heavy Industrial Aluminium Worm Gear Reducer<\/h2>\n

The EP-NRV090<\/strong> is the shaft-input version of the NMRV90, sharing the same 90 mm centre distance, 7,306 N·m maximum output torque, and 5.5 kW input power rating in an identical die-cast aluminium housing, but configured with a solid keyed input shaft in place of the bore-input IEC flange. This configuration makes the NRV090 the natural choice when power arrives via chain sprocket, belt pulley, hydraulic motor output, or PTO-driven countershaft — driving arrangements that cannot present an IEC flange face to the gearbox. Compared with the NRV075 at 75 mm centre distance, the NRV090 delivers 11% more output torque, enabling it to handle heavier chain-driven loads while maintaining the NRV series’s lightweight aluminium housing and corrosion-resistant finish. In Australian industry, the NRV090 is particularly valued for large engine-driven agricultural and industrial conveyor systems and high-power chain-driven mixing and processing equipment in mining and chemical plants, where the solid shaft input integrates naturally into existing chain or belt drive train layouts without requiring an IEC motor adaptor or modifying the drive geometry.<\/p>\n

\"EP-NRV090<\/p>\n

Technical Specifications — EP-NRV090<\/h2>\n

\"NRV090<\/p>\n

\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>\n90 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 5.5 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>\n7,306 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, precision ground<\/td>\n<\/tr>\n
Equivalent NMRV<\/td>\nNMRV90 (same internal assembly)<\/td>\n<\/tr>\n
Output Bore Diameter<\/td>\n35 mm standard (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

NRV090 Performance Table (5.5 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>\nFr max Input (N)<\/th>\nService Factor (fs)<\/th>\n<\/tr>\n<\/thead>\n
7.5<\/td>\n187<\/td>\n2,785<\/td>\n\u2014<\/td>\n1.9<\/td>\n<\/tr>\n
10<\/td>\n140<\/td>\n3,065<\/td>\n\u2014<\/td>\n1.5<\/td>\n<\/tr>\n
15<\/td>\n93<\/td>\n3,882<\/td>\n\u2014<\/td>\n1.2<\/td>\n<\/tr>\n
20<\/td>\n70<\/td>\n4,273<\/td>\n\u2014<\/td>\n1.1<\/td>\n<\/tr>\n
25<\/td>\n56<\/td>\n4,603<\/td>\n\u2014<\/td>\n1.1<\/td>\n<\/tr>\n
30<\/td>\n47<\/td>\n4,891<\/td>\n8,180<\/td>\n1.2<\/td>\n<\/tr>\n
40<\/td>\n35<\/td>\n5,383<\/td>\n\u2014<\/td>\n1.5<\/td>\n<\/tr>\n
50<\/td>\n28<\/td>\n5,799<\/td>\n\u2014<\/td>\n1.4<\/td>\n<\/tr>\n
60<\/td>\n23<\/td>\n6,163<\/td>\n\u2014<\/td>\n1.2<\/td>\n<\/tr>\n
80<\/td>\n18<\/td>\n6,783<\/td>\n\u2014<\/td>\n1.1<\/td>\n<\/tr>\n
100<\/td>\n14<\/td>\n7,306<\/td>\n\u2014<\/td>\n0.9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n