Descrição
EP-NMRV090 Worm Gearbox — 1,000 Nm Process Industry Drive in a 13 kg Aluminum Housing
The EP-NMRV090 aluminum worm gearbox crosses the threshold into genuine heavy-duty industrial service. At 13 kg, it remains light enough for a two-person installation without lifting equipment yet delivers output torques of up to 1,000 Nm — a specification that previously demanded heavy cast iron reducers weighing 35 kg or more. This torque-to-weight step-change makes the NMRV090 particularly attractive for Australian process industries where remote or elevated installation points make weight a real operational constraint.
The NMRV090 is the first model in the NMRV series to offer a 35 mm primary output shaft as standard — matching the driven-shaft bore of heavy-duty industrial sprockets, timing pulleys, and pump impeller hubs in the 3–5.5 kW motor range. Combined with four output flange configurations (FA, FB, FC, FD) covering pilot diameters from 130 to 180 mm, and acceptance of three NEMA input standards (56C, 140TC, 180TC), the NMRV090 delivers unprecedented configurability for a compact aluminum worm gear reducer.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | EP-NMRV090 |
| Weight (without motor) | 13 kg |
| Gear Ratios | 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 80, 100 |
| Max Input Power (P1) | Up to 4.0 kW |
| Max Output Torque (M2) | Up to 1,000 Nm |
| Output Speed Range | 14 – 186.7 rpm (at 1400 rpm input) |
| Max Radial Load Fr2 | Up to 7,306 N |
| Housing Material | Die-cast aluminum alloy |
| Worm Wheel Material | Phosphor bronze |
| Output Shaft Dia. (Metric) | 35 mm H8 (38 mm on request) |
| Output Shaft Dia. (Inch) | 1.375 in (−0.0005) |
| Keyway (metric 35 mm) | 10 × 38.3 mm |
| Input Shaft Dia. (Metric) | 24 j6 mm |
| NEMA Input Flanges | 56C, 140TC, 180TC |
| Output Flange Options | FA, FB, FC, FD |
| Mounting Options | Foot (NMRV), Shaft (NRV), Flange |
| Protection Class | IP54 standard |
| Operating Temperature | -10 to +40 deg C |
Dimensional Data — Metric & Inch
| Dimension | Metric (mm) | Inch (in) |
|---|---|---|
| Centre Height (A) | 140 | 5.51 |
| Centre Distance (I) | 90 | — |
| Output Shaft dia. | 35 mm H8 | 1.375 in |
| Input Shaft dia. | 24 j6 mm | 0.875 in |
| Keyway (output) | 10 × 38.3 mm | 0.313 × 2.5 in |
| Output Shaft Length | 80 mm | — |
| Flange Mount BK | 110 mm | 4.331 in |
Core Features & Engineering Advantages
⚙ 35 mm Standard Output Shaft
Matches bores of heavy-duty industrial sprockets and pump impellers in the 3–5.5 kW class — direct coupling eliminates intermediate adaptor bushings, reducing assembly time and misalignment risk on Australian mine-site installations.
🔥 1,000 Nm at Just 13 kg
Specific torque density of 77 Nm/kg. For elevated drive platforms in Australian mining and port facilities, this weight reduction versus cast iron directly impacts structural steel cost and reduces crane capacity requirements for installation and maintenance.
📈 7,306 N Radial Load Capacity
Supports direct V-belt pulley mounting in addition to chain sprockets — common in pump-house and irrigation station drives across regional Australia where belt drives are preferred for their slip-protection characteristic under overload conditions.
📝 Four Output Flange Configurations
FA, FB, FC, and FD flanges cover pilot diameters 130–180 mm — matching large pump flanges, industrial fan hubs, and mixer vessel mounting plates without custom machining.
🌞 Salt-Spray-Resistant Powder Coat
500+ hour salt spray resistance to ISO 9227 — essential for coastal process plants and offshore support facilities in Queensland, WA, and NT where marine atmosphere accelerates corrosion of unprotected drive housings.
Application Scenarios & Industry Suitability
⛩
Mining & Port Operations
Heavy belt conveyor head drives, ship-loader slew drives, and stacker-reclaimer tail drives — 1,000 Nm handles continuous full-load demands of bulk material handling.
🏛
Pumping Stations
Irrigation pump actuators, effluent pump drives, and water transfer station drives — self-locking at high ratios secures valve and gate position on power loss.
⚙
Process Industry
Reactor agitators, large mixing tanks, and polymer extruder feed drives — sustained 1,000 Nm covers continuous-duty industrial process drives in the 2.2–4 kW range.
🏭
Food & Dairy Processing
Large dough mixers, cheese vat agitators, and homogeniser drives — corrosion-resistant housing and IP54 sealing withstand CIP washdown cycles.
Selection Guide & Shaft Configuration
- Ratio 7.5–15: High-speed process drives and pump actuators — 93–186 rpm output.
- Ratio 20–50: Heavy conveyors, agitators, food mixers — 28–70 rpm, sustained high torque.
- Ratio 60–100: Gate and valve operators, slow positioning — 14–23 rpm, self-locking, maximum radial load.
Shaft & Flange Configuration Details
Standard: 35 mm H8 solid shaft with 10×38.3 mm keyway and M12 threaded end. Optional 38 mm shaft on request. Hollow bore available. Inch: 1.375 in with 0.313×2.5 in keyway. Four output flanges (FA–FD), pilot diameters 130–180 mm. Input: NEMA 56C, 140TC, or 180TC — specify at order.
Aluminum vs. Cast Iron — NMRV090 Comparison
| Criterion | EP-NMRV090 (Aluminum) | Cast Iron Equivalent |
|---|---|---|
| Unit Weight | 13 kg ✅ | 35–45 kg |
| Peak Output Torque | 1,000 Nm ✅ | Similar, 3x heavier |
| Radial Load Capacity | 7,306 N ✅ | Similar, much heavier |
| NEMA Flange Options | 56C, 140TC, 180TC ✅ | Usually one |
| Corrosion Resistance | High (powder coat) ✅ | Low without coating |
| Elevated Installation | Two-person ✅ | Crane required |
Frequently Asked Questions
❓ What is the maximum output torque of the EP-NMRV090?
Up to 1,000 Nm at 100:1 with 4.0 kW input — suited to heavy belt conveyor drives, large agitators, and pump station actuators exceeding the NMRV075’s 750 Nm capacity.
❓ Can the NMRV090 be installed in elevated or overhead positions?
Yes — 13 kg enables two-person installation without crane at most elevated positions. Multiple oil ports support all four mounting orientations. Specify orientation at order for correct breather plug position.
❓ What is the difference between the NMRV090 and NMRV110?
NMRV090: 1,000 Nm, 13 kg, 35 mm shaft. NMRV110: ~1,800 Nm, 35 kg, 42 mm shaft with higher radial load. Select NMRV110 for over 1,000 Nm or 42 mm driven-shaft interface.
❓ Does the NMRV090 support V-belt pulley mounting?
Yes — 7,306 N radial load supports direct A, B, and C-section V-belt pulley mounting in pump-house and irrigation drives across regional Australia.
❓ Is the EP-NMRV090 available with food-grade lubricant?
Yes — NSF H1 food-grade ISO VG 220 synthetic lubricant available as factory-fill for food processing and dairy applications. Specify at order.
Customer Reviews
★★★★★
“Installed EP-NMRV090 on belt conveyor head drives at our grain port in Geraldton. At 13 kg we hand-installed on the elevated platform without crane — a massive time saving. Twelve months continuous operation, no issues.”
Steve Madigan 🇦🇺 — Maintenance Manager, Grain Port, Australia
★★★★★
“Specified NMRV090 for reactor agitator drives in our chemical plant in Bucharest. The 1,000 Nm handles high-viscosity polymer blending in continuous service. Thermal performance is excellent.”
Andrei Popescu 🇷🇴 — Process Engineer, Chemical Plant, Romania
★★★★½
“Used on cheese vat agitators in our dairy facility in Shandong. NSF H1 lubricant option and IP54 sealing gave us confidence for our food-grade environment. Flange dimensions matched existing interfaces exactly.”
Yi Junjie 🇨🇳 — Production Manager, Dairy Industries Co., China
Compatible Accessories & Related Products
🔌
IEC B5/B14 Motor Adaptors
IEC 100–112 frame adaptors for 2.2–4.0 kW three-phase motors including IE2/IE3 high-efficiency and brake motor variants.
🔨
NRV090 Torque Arm
K1=200 mm heavy-duty torque arm for shaft-mount NRV090 — rated for sustained 1,000 Nm reaction torque in conveyor and process drive configurations.
🔃
Output Flanges (FA/FB/FC/FD)
Pilot diameters 130–180 mm — matching large pump flanges, fan hubs, and mixer mounting plates. Specify pilot diameter at order.
🔒
Protective Input Cover
Heavy-duty cover for the NMRV090 input side — IP-rated for port, mining, and outdoor process environments.
Specify the EP-NMRV090 for Your Process Drive
Application support for ratio selection, flange matching, and motor pairing for Australian mining, process, and agricultural industry customers.
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