説明
EP-NMRV130 Worm Gearbox — Flagship 2,500 Nm Drive for Major Industrial Infrastructure
The EP-NMRV130 aluminum worm gearbox is the most powerful unit in Ever Power’s NMRV compact series — delivering 2,500 Nm of sustained output torque from a 48 kg housing. Where comparable cast iron worm reducers weigh 100–130 kg and require heavy lifting equipment to install, the NMRV130 can be positioned by a small telehandler or a three-person team — a practical advantage on the elevated drive platforms of Australian port terminals, bulk material handling facilities, and water infrastructure pump stations.
The NMRV130’s 45 mm output shaft and class-leading 12,076 N radial load capacity allow direct mounting of the largest chain sprockets and V-belt pulleys used in heavy industrial conveyors without intermediate shaft supports. The centrifugally cast phosphor-bronze worm wheel delivers superior fatigue life under sustained high-torque conditions. NEMA 140TC, 180TC, and 210TC input flanges cover motors up to 9.2 kW, making the NMRV130 the definitive solution for Australian bulk material handling and large-vessel chemical agitation.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | EP-NMRV130 |
| Weight (without motor) | 48 kg |
| Gear Ratios | 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 80, 100 |
| Max Input Power (P1) | Up to 9.2 kW |
| Max Output Torque (M2) | Up to 2,500 Nm |
| Output Speed Range | 14 – 186.7 rpm (at 1400 rpm input) |
| Max Radial Load Fr2 | Up to 12,076 N |
| Housing Material | Die-cast aluminum alloy |
| Worm Wheel Material | Phosphor bronze (centrifugally cast) |
| Output Shaft Dia. (Metric) | 45 mm H8 |
| Output Shaft Dia. (Inch) | 1.750 in (−0.0005) |
| Keyway (metric output) | 14 × 48.5 mm |
| Input Shaft Dia. (Metric) | 30 j6 mm |
| NEMA Input Flanges | 140TC, 180TC, 210TC |
| Output Flange | FA (180 mm pilot, 22.5 deg bolt pattern — unique in NMRV series) |
| 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) | 170 | 6.69 |
| Centre Distance (I) | 130 | — |
| Output Shaft dia. | 45 mm H8 | 1.750 in |
| Input Shaft dia. | 30 j6 mm | 1.250 in |
| Keyway (output) | 14 × 48.5 mm | 0.375 × 2.75 in |
| Output Shaft Length | 80 mm | — |
| Flange Mount BK | 180 mm | 7.087 in |
| FA Flange Pilot (AK) | 180 mm +0.063 (22.5 deg ref) | 7.087 in |
Core Features & Engineering Advantages
⚙ 2,500 Nm Peak — Class-Leading Torque
The highest output torque in the compact NMRV series. For Australian port and mining operations, this weight reduction versus comparable cast iron translates to lower structural steel cost and simpler installation logistics in remote and elevated locations.
📈 12,076 N Radial Load — Highest in Series
Supports the largest industrial chain sprockets (up to 1.5-inch pitch) and heavy V-belt sheaves in overland bulk conveyor drives — eliminating intermediate pillow-block bearing supports and reducing drivetrain component count.
🔥 Centrifugally Cast Bronze Wheel
Denser, more homogeneous alloy structure than sand-cast wheels — delivering higher fatigue strength and longer service life under sustained high-torque, low-speed conditions of major conveyor and agitator drives in continuous 24-hour operation.
⚙ NEMA 210TC — 9.2 kW Motor Ready
Enables direct mounting of 7.5–9.2 kW motors in the 210 frame — the largest class commonly used in compact worm reducer applications in Australian heavy industry — without custom adaptor fabrication costs.
🌞 48 kg vs 100+ kg Cast Iron
At 48 kg, a 50–60% weight reduction versus cast iron reducers of equivalent torque. A replacement unit can be transported in a standard ute tray and installed with portable lifting — versus the heavy crane required for a cast iron equivalent at a remote Australian mine or farm site.
Application Scenarios & Industry Suitability
⛩
Overland Bulk Conveyors
Head and tail drives for overland iron ore, coal, and bauxite belt conveyors in WA and Queensland — 2,500 Nm handles maximum-load starting torque peaks on the longest loaded belts in Australian bulk commodity export terminals.
⚗
Major Process Vessels
Large-diameter mixing and reactor vessel agitators in chemical, fertiliser, and polymer plants — centrifugally cast bronze wheel withstands cyclic loading of high-viscosity product blending at full torque.
🏛
Major Water Infrastructure
Large clarifier rakes, gravity thickener drives, and penstock gate operators in major Australian water and irrigation authority plants — self-locking at high ratios eliminates brake requirements on power loss.
🏭
Heavy Grain & Food Industry
Large grain terminal elevator boot drives, silo chain conveyor drives, and commercial flour mill main drives — handles high inertia starting loads of heavily loaded grain handling systems in continuous 24-hour service.
Selection Guide & Shaft Configuration
- Ratio 7.5–15: High-speed process drives — 93–186 rpm, moderate torque.
- Ratio 20–40: Overland conveyors, major agitators — 35–70 rpm, sustained maximum torque.
- Ratio 50–100: Clarifier rakes, penstock gates, slow positioning — 14–28 rpm, self-locking, maximum 12,076 N radial load.
Shaft & Input Configuration Details
Standard: 45 mm H8 solid shaft with 14×48.5 mm keyway and M16 threaded end. Hollow bore available. Inch: 1.750 in shaft with 0.375×2.75 in keyway. Input: NEMA 140TC, 180TC, or 210TC — specify at order. FA output flange: 180 mm pilot diameter, 22.5 deg bolt pattern reference (unique to NMRV130 — all other NMRV models use 45 deg). Critical when designing the mating driven-machine flange.
Aluminum vs. Cast Iron — NMRV130 Flagship Comparison
| Criterion | EP-NMRV130 (Aluminum) | Cast Iron Equivalent |
|---|---|---|
| Unit Weight | 48 kg ✅ | 100–130 kg |
| Peak Output Torque | 2,500 Nm ✅ | Similar, 2–3x heavier |
| Radial Load Capacity | 12,076 N ✅ | Similar, much heavier |
| NEMA 210TC Acceptance | Yes ✅ | Rarely standard |
| Bronze Wheel Quality | Centrifugally cast ✅ | Sand-cast typically |
| Remote-Site Install | Telehandler / 3-person ✅ | Heavy crane required |
Frequently Asked Questions
❓ What is the maximum output torque of the EP-NMRV130?
Up to 2,500 Nm at 100:1 ratio with 9.2 kW input — the highest in the NMRV series. For overland conveyor drives, major process agitators, and large clarifier rakes exceeding the NMRV110’s 1,800 Nm.
❓ What makes the NMRV130 different from other large worm gearboxes?
2,500 Nm in a 48 kg housing. Cast iron equivalents weigh 100–130 kg. Centrifugally cast bronze wheel for superior fatigue resistance. NEMA 210TC acceptance for direct 9.2 kW motor mounting.
❓ Is the NMRV130 suitable for 24-hour continuous heavy-duty operation?
Yes, within rated P1. In ambient above 30 deg C, external oil cooling coil recommended to maintain oil below 90 deg C limit.
❓ What is the radial load capacity of the NMRV130 output shaft?
Up to 12,076 N at 100:1 — the highest in the compact NMRV series. Supports the largest industrial chain sprockets and heavy V-belt sheaves in overland conveyor systems without intermediate bearing pedestals.
❓ What is the FA flange bolt pattern angle for the NMRV130?
22.5 deg bolt pattern reference — unique in series (all others use 45 deg). Pilot dia: 180 mm, OD bolt circle: 280 mm. Critical when designing the mating driven-machine flange.
Customer Reviews
★★★★★
“Installed EP-NMRV130 on overland belt conveyor drives at our iron ore terminal in Port Hedland. At 48 kg versus 120 kg cast iron, installation time dropped from two days to six hours per unit. Fifteen months continuous, zero failures.”
Grant Mackenzie 🇦🇺 — Operations Manager, Iron Ore Terminal, Australia
★★★★★
“Specified NMRV130 on large reactor vessel agitators in our chemical plant in Frankfurt. The centrifugally cast bronze wheel held up perfectly under 24-hour continuous high-viscosity blending for over a year. Performance exceeds our specification.”
Hans-Peter Vogel 🇩🇪 — Chief Engineer, Chemical Plant GmbH, Germany
★★★★½
“Using NMRV130 for large clarifier rake drives at our water treatment facility in Buenos Aires. Self-locking at 80:1 holds rake position on power loss. The 12,076 N radial load rating gave us confidence to mount chain drive directly without a separate pillow block.”
Carlos RodrÃguez 🇦🇷 — Project Manager, Water Treatment, Argentina
Compatible Accessories & Related Products
🔌
IEC B5/B14 Motor Adaptors
IEC 132–160 frame adaptors for 5.5–9.2 kW three-phase motors including IE3 high-efficiency and brake motor variants for major industrial drives.
🔃
FA Output Flange (180 mm Pilot)
180 mm pilot diameter, 22.5 deg bolt pattern reference (unique to NMRV130). Direct coupling to large conveyor pulley flanges, clarifier rake arms, and major pump mounting plates.
🔨
Torque Arm (NRV130)
Heavy-duty torque arm rated for sustained 2,500 Nm reaction in shaft-mount conveyor drum and industrial drive configurations.
⚙
External Oil Cooling Coil
Recommended for 24-hour heavy-duty operation in ambient above 30 deg C — maintains oil below 90 deg C in tropical Australian and high-ambient process environments.
Specify the EP-NMRV130 — Australia’s Premier Heavy-Duty Compact Worm Drive
Competitive volume pricing, full technical application engineering, and OEM partnership arrangements for the EP-NMRV130 and the complete NMRV series from NMRV025 to NMRV130.
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About Ever Power
✉ [email protected] | OEM & distributor enquiries welcome
