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EPNMRV130 Aluminium Worm Gearbox — Overview
The EPNMRV130 is the largest and most powerful unit in the EPNMRV aluminium worm gearbox series, delivering up to 1,596 Nm of output torque from a 7.5 kW input — making it indispensable in cement mixing plants, quarrying equipment, and large-scale bulk material handling systems. Weighing 48 kg, it is substantially lighter than the cast-iron competitors it replaces, yet its heavy-section die-cast aluminium housing and high-tensile phosphor-bronze worm gear wheel withstand the shock loading and continuous-duty cycles of the harshest mineral processing environments. Australian quarrying and resources companies value the EPNMRV130 for its sealed multi-lip output shaft seals that prevent fine dust ingestion and eliminate oil-loss service calls between scheduled shutdowns.
EPNMRV130 Technical Specifications
General Specifications
| Parameter | Value |
|---|---|
| Model | EPNMRV130 |
| Input Power (P1) | 0.75 – 9.2 kW |
| Max Output Torque (M2) | 1596 Nm |
| Max Radial Force (Fr2) | 13500 N |
| Available Gear Ratios (i) | 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 80 |
| Output Shaft Dia. | 45 mm / 1.750 in |
| Input Shaft Dia. | 31.75 mm / 1.250 in |
| NEMA Input Flange | NEMA 140TC/180TC/210TC |
| IEC Input Flange | IEC 100/112/132 |
| Unit Weight | 48 kg |
| Housing Material | Die-cast ADC12 aluminium alloy |
| Worm Wheel Material | High-tensile phosphor bronze |
| Worm Shaft Material | 20CrMnTi alloy steel — case-hardened & ground |
| Surface Finish | Two-coat baked epoxy-polyester |
| Standard Mounting | B3 foot / VS IEC flange / hollow bore |
| Lubrication | ISO VG 220 synthetic gear oil |
| Input Speed (n1) | 1,400 rpm (50 Hz 4-pole reference) |
Inch-Series Dimension Reference
| Dimension | Inch Value | Metric Equivalent |
|---|---|---|
| A – Body width | 6.69 in | 170 mm |
| B – Body height | 7.38 in | 187 mm |
| J – Overall length | 11.52 in | 293 mm |
| Output shaft dia. | 1.750 in | 44.45 mm |
| Input shaft dia. | 1.250 in | 31.75 mm |
| NEMA flange | 140TC/180TC/210TC | IEC 100/112/132 |
| Weight | – | 48 kg |
Performance Data — EPNMRV130 (n1 = 1,400 rpm)
| P1 (kW) | Ratio (i) | n2 (rpm) | M2 (Nm) | f.s. | Fr2 (N) |
|---|---|---|---|---|---|
| 1.5 | 10 | 140 | 90 | 2.2 | 5605 |
| 1.5 | 15 | 93.3 | 130 | 1.5 | 6416 |
| 3.0 | 10 | 140 | 180 | 1.1 | 5605 |
| 3.0 | 15 | 93.3 | 261 | 0.8 | 6416 |
| 4.0 | 10 | 140 | 243 | 1.3 | 5605 |
| 4.0 | 15 | 93.3 | 352 | 1.0 | 6416 |
| 4.0 | 20 | 70 | 458 | 0.8 | 7062 |
| 5.5 | 10 | 140 | 333.9 | 2.5 | 5605 |
| 5.5 | 15 | 93.3 | 490 | 1.9 | 6416 |
| 5.5 | 20 | 70 | 645 | 1.4 | 7062 |
| 5.5 | 25 | 56 | 788 | 1.2 | 7607 |
| 5.5 | 30 | 46.7 | 900 | 1.2 | 8084 |
| 7.5 | 7.5 | 186.7 | 349.2 | 2.1 | 5092 |
| 7.5 | 10 | 140 | 455 | 1.8 | 5605 |
| 7.5 | 15 | 93.3 | 668 | 1.4 | 6416 |
| 7.5 | 20 | 70 | 880 | 1.0 | 7062 |
| 7.5 | 25 | 56 | 1074 | 0.9 | 7607 |
| 7.5 | 30 | 46.7 | 1228 | 0.8 | 8084 |
| 7.5 | 40 | 35 | 1596 | 0.7 | 8897 |
Key Features & Benefits — EPNMRV130
1,596 Nm — Maximum Single-Stage Output
At 40:1 ratio with 7.5 kW input, the EPNMRV130 delivers 1,596 Nm — the highest output torque available in the single-stage EPNMRV aluminium series. This replaces multi-stage gearbox arrangements in cement auger drives, quarry crusher feeds, and bulk material elevator boots.
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13,500 N Radial Force — Mining Grade
The extra-heavy output shaft bearing assembly supports 13,500 N radial force — handling the extreme belt tensions and drum pull forces on bulk material handling conveyors at Australian mining and quarrying sites, with bearing life calculated for 30,000+ hours.
Dust-Sealed for Mineral Processing
Multi-lip labyrinth output shaft seals and a sealed housing joint prevent the fine silica and coal dust present in mineral processing environments from contaminating the gear oil — a critical failure mode that eliminates gearboxes in quarrying operations without proper sealing.
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48 kg vs ~85 kg Cast-Iron Equivalent
The EPNMRV130’s 48 kg aluminium construction is 44% lighter than equivalent cast-iron units. On elevated conveyor structures at remote mine sites where crane access is limited, this weight difference reduces rigging time and eliminates the need for a larger-capacity crane.
Self-Locking at ≥ 30:1 — Safe Hold
At ratios of 30:1 and above — including the high-torque 40:1 option — the EPNMRV130 is self-locking under static load. This is particularly valuable in inclined conveyor boot drives and cement silo augers where downhill load reversal must be prevented.
Application Scenarios — Where the EPNMRV130 Excels
Cement & Quarrying Equipment
Cement mixer auger drives, quarry crusher infeed conveyors, and crushed stone elevator boots across Australia’s resources sector use the EPNMRV130 as the primary drive. The 1,596 Nm output and dust-sealed housing make it the standard recommendation for mineral processing OEM builders. Keyword: high torque worm gearbox for cement and quarrying equipment Australia
Bulk Material Handling Conveyors
Long-haul belt conveyors for coal, iron ore, and grain use the EPNMRV130 for its 13,500 N radial capacity and 7.5 kW input — delivering the sustained drive power needed for fully loaded 1,200 mm belt conveyors at 2 m/s in dusty outdoor environments. Keyword: heavy-duty worm reducer for bulk material handling conveyor systems
Large Industrial Treatment Systems
Municipal wastewater primary clarifier scrapers, large sludge thickener rakes, and industrial effluent paddle drives in the 5–9 kW power range use the EPNMRV130 for its combination of 1,228 Nm continuous torque and corrosion-resistant sealed housing. Keyword: large worm gear reducer for industrial water treatment systems
Grain Handling & Storage
Large grain auger drives, grain elevator boot drives, and silo sweep auger units at bulk grain handling terminals use the EPNMRV130 for its combination of maximum torque, self-locking at high ratios, and sealed housing that prevents grain dust from contaminating gear oil. Keyword: high torque worm gearbox for grain handling and storage equipment
Selection Guide & Comparison — EPNMRV130
How to Select the Right EPNMRV Model
Select the EPNMRV130 when torque is 450–1,596 Nm and input power is 0.75–9.2 kW. For slow bulk-material drives at 17–46 rpm use 30:1–80:1. For faster drives at 93–186 rpm use 7.5:1–15:1. The 40:1 ratio is unique to the 130 frame and delivers the maximum single-stage torque of 1,596 Nm.
Mounting Positions & Lubrication Notes
| Mounting | Code | Oil Fill Note |
|---|---|---|
| Horizontal — foot down | B3 | Standard fill volume (reference) |
| Horizontal — foot right | B6 | Same as B3 |
| Horizontal — foot left | B7 | Same as B3 |
| Horizontal — foot up | B8 | Same as B3 |
| Vertical — output shaft down | V5 | Increase fill ~20% above B3 reference |
| Vertical — output shaft up | V6 | Increase fill ~25% above B3 reference |
EPNMRV130 vs Traditional Cast-Iron Worm Reducer
| Attribute | EPNMRV130 (Aluminium) | Traditional Cast-Iron | Advantage |
|---|---|---|---|
| Weight | 48 kg | ~85 kg typical | 44% lighter — reduces crane and structural cost |
| Maximum torque | 1,596 Nm | 1,200 Nm typical cast-iron | Higher peak torque in aluminium |
| Radial capacity | 13,500 N | 10,000 N typical | Mining-grade belt-tension handling |
| Dust sealing | Multi-lip labyrinth seal | Standard single-lip | Critical for mineral processing |
| Self-locking | Yes (≥ 30:1) | Not inherent in helical | Prevents load reversal on inclines |
Frequently Asked Questions — EPNMRV130
What is the maximum output torque of the EPNMRV130?
1,596 Nm at 40:1 ratio with 7.5 kW input (35 rpm output). At 30:1 the maximum is 1,228 Nm at 46.7 rpm with the same input power. The EPNMRV130 offers the highest single-stage output torque in the EPNMRV aluminium series.
Is the EPNMRV130 suitable for continuous duty in a cement plant?
Yes. The extra-heavy duty construction, multi-lip labyrinth shaft seals, and baked-epoxy housing finish suit continuous-duty cement plant operation. In cement mixing applications, use ISO VG 220 full synthetic gear oil and replace every 3,000 hours in environments with high cement dust concentrations.
What is the output shaft diameter?
45 mm metric (1.750 in inch series) with a 14 mm keyway. This is the largest shaft in the EPNMRV series, fitting standard heavy-industrial coupling hubs and conveyor drive sprocket bores used on 7.5–9.2 kW motor installations.
Can the EPNMRV130 handle shock loading from a quarry crusher infeed?
The EPNMRV130 is rated for moderate shock loading (service factor up to 1.5×) in quarry infeed applications. For higher shock factors (>1.5×), either select a duty-cycle derating of input power or consider the EPNMRV063/130 double-stage unit which provides additional structural mass and bearing capacity. Consult Ever-power application engineers for crusher infeed specifications.
Which NEMA flanges are compatible?
140TC (0.875 in bore), 180TC (1.125 in bore), and 210TC (1.375 in bore) — covering motors from 0.75 kW to 9.2 kW in the North American motor standard. The 210TC flange is unique to the 110/130 frame size and is essential for the large-frame motors used in quarrying and bulk handling applications.
How much oil does the EPNMRV130 require?
Approximately 6.0 litres of ISO VG 220 synthetic gear oil for horizontal B3 mounting. V5/V6 orientations require 7.0–7.5 litres. In dusty mineral processing environments, inspect the oil for contamination at each scheduled maintenance shutdown and replace annually even if the colour appears clean.
Is the EPNMRV130 available as a double-stage combination for very high reduction ratios?
Yes. The EPNMRV063/130 double-stage combination provides ratios up to 5,000:1 with a maximum output torque of 13,500 Nm. This unit is catalogued separately. Contact Ever-power for double-stage specifications, performance tables, and dimensional drawings.
Customer Reviews — EPNMRV130
★★★★★
“We run EPNMRV130 units on our crushed granite elevator boot drives at our Karratha quarry. Three years of operation in 45 °C ambient temperature with constant silica dust, and the labyrinth seals have completely prevented gear oil contamination. The 1,228 Nm at 30:1 handles even full-load starts without issue.”
Crushed stone elevator boot drive, Karratha WA — operating since 2022
Brett F.
Pilbara Quarry Products Pty Ltd — Australia
★★★★★
“The EPNMRV130 replaced a cast-iron unit on our copper concentrate conveyor drive at 3,800 m altitude. The 44% weight saving simplified the crane rigging to access the conveyor structure, and the aluminium housing is holding up well in the high-UV, temperature-cycling Andean environment.”
Copper concentrate belt conveyor tail drive, Los Pelambres mine
Roberto C.
Minera Los Pelambres — Chile
★★★★☆
“Using the EPNMRV130 on our dolomite mill infeed conveyor. The 40:1 ratio gives us exactly the belt speed we need from a standard 7.5 kW motor without a frequency inverter. The unit is heavier than we expected at 48 kg but within our crane capacity. Performance has been reliable across 18 months of three-shift operation.”
Dolomite mill infeed conveyor drive, Siewierz facility
Marek K.
Górnicze Zakłady Dolomitowe — Poland
Related Products & Compatible Accessories
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Compatible IEC B14 / NEMA Motors
Standard IEC B14 flange motors (IEC 100/112/132) and NEMA 140TC/180TC/210TC frame motors pair directly with the EPNMRV130 VS motor flange. Single-phase and three-phase AC motors from 0.06 kW to 9.2 kW are available from Ever-power as matched gearmotor assemblies.
Output Flanges (FA / FB / FC / FD)
Multiple output flange configurations for the EPNMRV130 allow direct face-mounting to conveyor roller frames, agitator shaft hubs, and indexing disc assemblies without intermediate couplings.
Hollow Output Bore & Torque Arms
Hollow bore variant of the EPNMRV130 eliminates output shaft couplings. Supplied with a torque arm bracket that reacts output torque against the machine frame — ideal for conveyor head-drum and auger shaft-mount installations.
Double-Stage EPNMRV Combinations
The EPNMRV130 can be combined with a larger output stage (e.g., EPNMRV130/130 or EPNMRV025/130) to achieve ratios up to 5,000:1 for ultra-slow precision drives. Contact Ever-power for double-stage selection data.
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Torque Limiter & Backstop Options
Torque limiter couplings and mechanical backstops are available as accessories. Backstops prevent reverse rotation on inclined conveyors; torque limiters protect the gearbox from shock overloads in crusher infeed and auger drive applications.
Maximum Torque, Minimum Maintenance — EPNMRV130
The EPNMRV130 is the premium choice for Australia’s resources, quarrying, and bulk handling industries. Contact Ever-power for double-stage combinations, IP65 specifications, or supply agreements for multi-unit plant installations.
