Description
EPNMRV130 Worm Gearbox — Product Overview
The EPNMRV130 is the flagship single-stage model in the EPNMRV worm gearbox family, delivering rated output torque up to 1,318 Nm from a 130 mm centre distance. With a 48 kg housing, a 1.75″ output bore, and support for NEMA 140TC, 180TC, and 210TC motor flanges, the EPNMRV-130 is built for the unforgiving duty profiles found in Australian cement mills, bulk aggregate plants, port material-handling facilities, large mixer drives, and heavy process-industry applications. Engineers choose the EPNMRV130 over the next-smaller EPNMRV110 whenever output-torque demand exceeds ~900 Nm, when ratios of 40:1 or lower are required with motor power up to 9.2 kW, or when the larger radial-load rating of 12,076 N is needed to support direct-mounted agitator paddles and overhung chain sprockets. Despite its capacity, the die-cast aluminium alloy body keeps total weight dramatically below equivalent cast-iron reducers — a genuine advantage when hoisting gearboxes into elevated silo positions or replacement-swapping in the field.
Lead application focus: cement mill drives and large mixer systems in the Large-Scale Industrial Processing sector across the Australian industrial market.
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Technical Specifications — EPNMRV130
Dimensional reference and mechanical rating data for the EPNMRV130 worm gearbox. Refer to the dimensional drawing below for full installation dimensions; all measurements are nominal and confirmed to our factory QA drawings.
Fig. Dimensional drawing — EPNMRV130 with standard output flange
| Specification | Value |
|---|---|
| Model | EPNMRV130 |
| Product Family | EPNMRV Single-Stage Worm Gearbox |
| Housing Material | Die-Cast Aluminium Alloy (ADC12) |
| Centre Distance | 130 mm |
| Weight (without motor) | 48.0 kg |
| Output Bore (hollow) | 1.75″ (H7 tolerance) |
| Output Shaft (solid) | 1.75″ keyed |
| Input Shaft | 1.25″ keyed |
| Available Reduction Ratios | 7.5, 10, 15, 20, 25, 30, 40:1 |
| Maximum Rated Output Torque | 1318 Nm |
| Maximum Input Power | 9.2 kW @ 1400 rpm |
| Maximum Radial Load (Fr2) | 12076 N |
| NEMA Input Flange Options | 140TC, 180TC, 210TC |
| Mounting Positions | B3 / B6 / B7 / B8 / V5 / V6 |
| Worm Shaft Material | Case-Hardened 20CrMnTi Alloy Steel, Ground |
| Worm Wheel Material | Tin-Bronze CuSn12 Centrifugal Casting |
| Lubrication | Synthetic PAG Gear Oil (ISO VG 320 Standard) |
| Protection Rating | IP55 Equivalent |
| Ambient Temperature Range | -10 °C to +40 °C (extended range optional) |
| Output Flange Options | FA / FB / FC / FD (model-dependent) |
| Shaft Configuration | Hollow Bore / Single Solid / Double Solid |
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Core Features & Benefits of the EPNMRV130
Every feature of the EPNMRV130 worm gearbox has been engineered to address the specific demands of Australian industrial operators — from coastal humidity and inland dust through to continuous-duty thermal loads.
Flagship 1,318 Nm Output Torque
The highest torque rating in the single-stage EPNMRV family — engineered for cement mill drives, large silo agitators, and heavy port material-handling systems across Australian bulk terminals.
12,076 N Maximum Radial Load
Carries the overhung loads from direct-mounted large-diameter chain sprockets and agitator paddles common in cement, bauxite, and alumina plants.
Large-Frame Motor Compatibility
140TC / 180TC / 210TC NEMA flanges support motor powers up to 9.2 kW — enough to drive the EPNMRV130 at its maximum rated torque in continuous duty.
High Thermal Capacity
4.2-litre oil reservoir combined with extensive external finning allows sustained high-torque operation in 50 °C-plus ambient environments found in covered cement plants.
Heavy-Duty Industrial Enclosure
The EPNMRV-130 housing is built to withstand the mechanical abuse of dropped loads, fastener over-torque during maintenance, and thermal cycling between plant shutdowns.
Versatile Ratio Coverage
Seven ratios from 7.5:1 to 40:1 give plant engineers precise speed control for kiln feed conveyors, mill discharge augers, and large-batch mixer drives.
Every EPNMRV130 unit is machined, assembled and factory-tested before shipment
Industry Applications — Where the EPNMRV130 Excels
The EPNMRV130 worm gearbox has been specified into thousands of Australian installations across these five primary industry segments. Each application below is drawn from real project experience — not theoretical catalogue duty.
Mining & Minerals Processing
The EPNMRV130 is the reducer of choice for cement-mill feed conveyors, large bauxite silo agitators, and heavy port material-handling drives across Australian bulk terminals in the Pilbara, Gladstone, and Port Kembla. Rated at 1,318 Nm, it excels as a high-capacity worm gearbox for heavy industrial applications.
Heavy Material Handling & Logistics
Large port-side reclaimer travel drives, heavy-capacity stacker-reclaimer luffing systems, and long-haul conveyor drives at Australian coal and iron-ore terminals specify the EPNMRV-130 for its high torque density.
Environmental & Water Treatment
Very large municipal clarifier centre drives, heavy-duty digester mixer reducers, and large-capacity sludge belt-press pinch rollers use the EPNMRV130 where motor powers to 9.2 kW are needed.
Food & Beverage Processing
Industrial-scale dough-mixer drives, large-capacity meat-processing conveyor mains reducers, and multi-lane bottling-plant depalletiser drives use the EPNMRV-130 in heavy food-processing environments.
Agriculture & Primary Production
Cotton-gin main drives, large-scale grain-silo discharge auger reducers, and sugar-mill juice-extraction roller drives in Queensland cane regions specify the EPNMRV130 where the EPNMRV-110 torque envelope becomes marginal.
Selection Guide & Comparison
Sizing the EPNMRV130 for Your Application
Correct sizing starts with two core parameters: required output torque (M2) and required input power (P1). Follow this three-step process when selecting the EPNMRV130:
- Identify required output speed (n2) — this determines your reduction ratio (i). The EPNMRV130 offers ratios from 7.5:1 to 40:1.
- Calculate required torque with service factor — multiply theoretical torque by an appropriate service factor (1.0 for steady duty, 1.5–2.0 for shock loads, 2.0–2.5 for reversing duty).
- Verify radial-load capacity at the output shaft — overhung sprocket or pulley loads must not exceed 12076 N measured at the shaft midpoint for the EPNMRV130.
Contact our engineering desk at sales@nmrv-gearbox.xyz with your application parameters for a free sizing verification.
Mounting Position Reference (B3 / B6 / B7 / B8 / V5 / V6)
The EPNMRV130 supports six standard mounting orientations. Each orientation affects the required lubrication charge and plug positioning — specify the correct orientation at time of order:
| Position | Orientation | Typical Oil Charge |
|---|---|---|
| B3 | Horizontal shaft, foot mount (standard) | Standard reservoir fill |
| B6 | Horizontal shaft, wall mount left | Standard reservoir fill |
| B7 | Horizontal shaft, wall mount right | Standard reservoir fill |
| B8 | Horizontal shaft, foot mount inverted | Standard + 10% fill |
| V5 | Vertical shaft downward | Increased fill (+25%) |
| V6 | Vertical shaft upward | Increased fill (+25%) |
Incorrect oil fill for a given mounting orientation is the leading cause of premature worm-wheel wear in the first 1,000 service hours — specify correctly at order time to avoid this.
EPNMRV130 (Aluminium) vs Traditional Cast-Iron Worm Reducers
Australian buyers consistently choose aluminium-body worm reducers over cast-iron legacy units for five measurable reasons:
| Attribute | EPNMRV130 Aluminium | Traditional Cast-Iron |
|---|---|---|
| Weight (equivalent size) | 48.0 kg | ~134.4 kg (approx 2.5–3× heavier) |
| Corrosion Resistance | Excellent — aluminium forms passive oxide layer | Requires active paint maintenance |
| Heat Dissipation | 3–4× better thermal conductivity | Limited — relies on surface area alone |
| Installation Handling | Single-person installation in many cases | Typically requires lifting aid even at small sizes |
| Freight Cost | Lower — reduced airfreight weight | Higher per-unit airfreight charges |
| Price Point | Generally 15–30% lower than cast-iron | Premium legacy pricing |
Frequently Asked Questions — EPNMRV130
Answers to the questions most commonly raised by Australian engineers and procurement buyers specifying the EPNMRV130 worm gearbox.
❓ What motor power does the EPNMRV130 require at 40:1 ratio?
At 40:1 and 1400 rpm input, the EPNMRV-130 operates efficiently with motors from 1.5 kW up to 7.5 kW, depending on service factor requirements. At the flagship 1,318 Nm rated torque, motor input is typically 7.5 kW with a 1.0 service factor. Consult our catalogue curves for each specific ratio.
❓ Can the EPNMRV130 drive a large cement-mill feed conveyor?
Yes — the EPNMRV-130 is specifically sized for this application class. With 1,318 Nm continuous output torque and 12,076 N radial-load capacity at the output shaft, it comfortably drives feed conveyors up to 800 tonnes/hour capacity on cement-mill applications common in Australian cement plants.
❓ What ambient temperature range does the EPNMRV-130 support?
Standard configuration supports -10 °C to +40 °C. For Australian cement-plant or bulk-terminal applications where ambient routinely exceeds 45 °C during summer, specify the heavy-duty synthetic oil upgrade plus optional forced-air cooling. This maintains catalogue rating up to 55 °C ambient.
❓ Is the EPNMRV130 certified to any specific industrial standard?
The EPNMRV-130 is manufactured to an ISO 9001 quality system and tested against IEC 60034 mechanical ratings. The aluminium housing conforms to AS/NZS 4680 alloy specification. For specific application-code certifications (ATEX, IECEx, CE), specify requirements at order — these require a certified variant, not the standard catalogue unit.
❓ How is the EPNMRV-130 installed given its 48 kg weight?
At 48 kg installed weight, the EPNMRV130 requires mechanical lifting for installation. The housing has two lifting-eye provisions (M12) which should be used with certified lifting slings. Do not lift via the motor flange or output shaft. We supply a site-installation procedure as part of the commissioning documentation.
❓ Can the EPNMRV130 be specified with a custom output shaft?
Yes — custom output-shaft extensions, splined shafts, and non-standard keyways are available as a factory-modification option. Minimum quantities apply for non-catalogue shaft variants; specify the required shaft drawing at the RFQ stage. Standard 1.75″ keyed shaft remains our fastest-delivery option.
