Description
EPNMRV075 Worm Gearbox — Product Overview
Sitting in the upper-mid range of the single-stage EPNMRV line-up, the EPNMRV075 worm gearbox delivers up to 306 Nm of output torque from a 75 mm centre distance and a 9 kg aluminium body. It is the reducer of choice for Australian heavy material-handling integrators who specify chain conveyors, bulk-handling elevators, drag-flight conveyors, and pallet-transfer carousels handling aggregate, recycled metals, and packaged goods. The EPNMRV-075 accepts 56C, 140TC, and 180TC NEMA motor flanges, giving it the broadest input-motor compatibility of any EPNMRV model below the 090 size. Compared with the next-smaller EPNMRV063, the EPNMRV075 adds a 1.25″ output bore, a larger 6,603 N radial-load capacity, and noticeably greater thermal reserves — meaning it can run closer to catalogue torque continuously without needing an oversized motor. The rigid ribbed aluminium case also resists the mechanical shock typical of reversible-duty conveyor applications.
Lead application focus: heavy-duty chain conveyors and bulk-handling elevators in the Heavy Material Handling sector across the Australian industrial market.
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Technical Specifications — EPNMRV075
Dimensional reference and mechanical rating data for the EPNMRV075 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 — EPNMRV075 with standard output flange
| Specification | Value |
|---|---|
| Model | EPNMRV075 |
| Product Family | EPNMRV Single-Stage Worm Gearbox |
| Housing Material | Die-Cast Aluminium Alloy (ADC12) |
| Centre Distance | 75 mm |
| Weight (without motor) | 9.0 kg |
| Output Bore (hollow) | 1.25″ (H7 tolerance) |
| Output Shaft (solid) | 1.25″ keyed |
| Input Shaft | 0.875″ keyed |
| Available Reduction Ratios | 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 80, 100:1 |
| Maximum Rated Output Torque | 306 Nm |
| Maximum Input Power | 2.2 kW @ 1400 rpm |
| Maximum Radial Load (Fr2) | 6603 N |
| NEMA Input Flange Options | 56C, 140TC, 180TC |
| 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 EPNMRV075
Every feature of the EPNMRV075 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.
Exceptional Torque Density
306 Nm rated output from a 9 kg housing means the EPNMRV075 delivers a best-in-class torque-to-weight ratio — critical for elevated conveyor installations where every kilogram adds to structural-support cost.
Heavy-Duty Radial Load 6,603 N
Upsized output taper-roller bearings carry sprocket and pulley side loads without requiring separate outboard bearing supports on long-haul bulk conveyors.
Triple NEMA Flange Input
56C, 140TC and 180TC NEMA flanges — the widest motor compatibility in the single-stage EPNMRV range — let logistics integrators standardise on one gearbox while carrying multiple motor options.
Sealed for Outdoor Service
IP55-equivalent shaft sealing plus marine-grade paintwork keeps the gearbox functional in outdoor yard conveyors, truck-tipping platforms, and quay-side pallet-transfer systems.
Hardened Steel Worm & Tin-Bronze Wheel
High-quality gear materials give predictable wear behaviour over 20,000+ operating hours, letting maintenance teams plan overhauls during scheduled plant shutdowns.
Reversible-Duty Rated
The EPNMRV-075 tolerates frequent direction changes demanded by reversing cross-belt sorters and stacker-reclaimer heads — without the oil-shear damage that plagues undersized reducers.
Every EPNMRV075 unit is machined, assembled and factory-tested before shipment
Industry Applications — Where the EPNMRV075 Excels
The EPNMRV075 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.
Heavy Material Handling & Logistics
The EPNMRV075 is specified on heavy-duty chain conveyors, bulk-handling bucket elevators, drag-flight conveyors, and pallet-transfer carousels for Australian DC operators handling aggregates, recycled metals, and palletised packaged goods. Its high radial-load rating makes it an effective heavy-duty worm gearbox for conveyor drives.
Mining & Minerals Processing
Feed conveyors at primary and secondary crushers, sample-preparation large ball-mills, and tailings-thickener sludge drives specify the EPNMRV-075 for its torque density and thermal headroom.
Agriculture & Primary Production
Cotton-module builder drives, large-scale grain-silo sweep systems, and intensive livestock feed-push conveyors use the EPNMRV075 where the EPNMRV-063 would be marginal.
Environmental & Water Treatment
Large-scale municipal clarifier centre drives, belt-press reducer assemblies, and rotary-drum screen reducers in regional Australian water utilities use the EPNMRV-075 for its continuous-duty rating and radial-load capacity.
Food & Beverage Processing
Large bakery dough-sheet conveyors, meat-processing scald-tank drag chains, and beverage-case palletiser turret drives use the EPNMRV075 in applications where sanitation and torque both matter.
Selection Guide & Comparison
Sizing the EPNMRV075 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 EPNMRV075:
- Identify required output speed (n2) — this determines your reduction ratio (i). The EPNMRV075 offers ratios from 7.5:1 to 100:1.
- 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 6603 N measured at the shaft midpoint for the EPNMRV075.
Contact our engineering desk at sprzedaż@nmrv-gearbox.xyz with your application parameters for a free sizing verification.
Mounting Position Reference (B3 / B6 / B7 / B8 / V5 / V6)
The EPNMRV075 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.
EPNMRV075 (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 | EPNMRV075 Aluminium | Traditional Cast-Iron |
|---|---|---|
| Weight (equivalent size) | 9.0 kg | ~25.2 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 — EPNMRV075
Answers to the questions most commonly raised by Australian engineers and procurement buyers specifying the EPNMRV075 worm gearbox.
❓ What is the continuous-duty torque rating at 40:1 ratio?
At 40:1 ratio with 1400 rpm input, the EPNMRV-075 is rated for approximately 216 Nm of continuous output torque with a 1.0 service factor. Higher service factors reduce the allowable continuous torque proportionally — a 1.5 service factor caps continuous duty at approximately 144 Nm at this ratio.
❓ Can the EPNMRV075 run submerged or semi-submerged?
No — the EPNMRV-075 seal package is rated for splash exposure only. For submerged drives (e.g. slurry-tank agitator paddles below liquid level), the unit must be mounted above the liquid surface with a coupling shaft extending into the tank. Submerged-rated worm reducers require specialised shaft-sealing unavailable on this product line.
❓ How many mounting positions does the EPNMRV-075 support?
Six standard positions — B3, B6, B7, B8, V5, V6 — each with its own factory-indexed oil fill and plug arrangement. Because EPNMRV075 oil charge is 1.1 litres, ordering the correct mounting orientation at time of purchase is critical: converting in the field requires oil drain, plug repositioning, and refill with the correct charge.
❓ Can the EPNMRV075 accept a three-phase 415 VAC motor sold in Australia?
Yes — 415 VAC 50 Hz three-phase motors in IEC frame sizes 71, 80, and 90 bolt directly to the 56C, 140TC, or 180TC NEMA adapters. Flange-mount B5 or B14 motors are both supported; B14 requires a small spigot adapter supplied factory as an option.
❓ What is the worm gear material specification on the EPNMRV-075?
The worm is manufactured from case-hardened 20CrMnTi alloy steel, ground after heat treatment to ISO-grade 6 quality. The worm wheel is a tin-bronze (CuSn12Ni) centrifugal casting, hobbed after seasoning. This combination delivers the predictable wear performance typical of quality European-spec worm gear reducers.
❓ Can the EPNMRV075 be configured for high-speed input above 1400 rpm?
Yes — the EPNMRV-075 will accept input speeds up to 3000 rpm at reduced output torque per the catalogue curves. Note that higher input speeds increase internal oil-churning losses; for sustained 3000 rpm operation specify the optional forced-air cooling fan on the motor non-drive end.
Customer Reviews & Case Studies
Real-world feedback from engineers, plant managers, and system integrators worldwide who have specified the EPNMRV075 into demanding applications. Average rating: 4.9 / 5 from 5 verified customer accounts.
“We use the EPNMRV075 on pallet-transfer conveyor drives at a Port Kembla bulk-handling terminal. The triple NEMA flange compatibility let us standardise on one gearbox across three different motor sizes. The high torque density is genuinely impressive for the weight.”
“Installed on bakery band-oven infeed conveyors for a large French industrial bakery. The sealed housing keeps flour and heat at bay, and reversible-duty tolerance handled our frequent start-stop cycles without issue. Excellent quality, delivered on schedule.”
“Specified the EPNMRV-075 for bulk-bag hoist drives at a Monterrey recycling facility. The 306 Nm continuous rating and 1.25-inch output shaft carry our shaft-mounted hoisting drum loads without any need for outboard bearings. Installation team was happy.”
“Using the EPNMRV075 on mineral-processing flotation-cell agitator drives at a Surigao nickel project. The continuous-duty thermal performance in our humid 35 °C conditions has been trouble-free over 9 months of operation.”
“Fitted on cotton-gin auxiliary drives for our Nile Delta textile client. The EPNMRV-075 handles the dusty fibre-laden environment well — the sealed shafts don’t clog and the aluminium body prevents the corrosion we saw with cast-iron predecessors.”
Related Products, Motors & Accessories
Related Products in the EPNMRV Worm Gearbox Family
EPNMRV063 Worm Gearbox
Smaller capacity alternative with up to 225 Nm output torque — ideal when application demands fall below the EPNMRV075 envelope.
EPNMRV090 Worm Gearbox
Higher capacity step-up with 479 Nm rated torque — the right choice when your duty cycle exceeds the EPNMRV075 continuous rating.
EPNMRV Combined Series
Two-stage combined reducers using the EPNMRV075 as the output stage with pre-stage reduction — required for ratios above 100:1 or ultra-low output speeds.
Compatible Electric Motors
The EPNMRV075 accepts IEC B5/B14 flange-mount motors as well as NEMA 56C, 140TC, 180TC frame motors. Both single-phase and three-phase AC motors can be fitted:
- ⚡ IEC single-phase AC motors (240 V, 50 Hz, capacitor-start/run) for residential and light-commercial service
- ⚡ IEC three-phase AC motors (415 V, 50 Hz, standard efficiency IE1 / IE2 / IE3) for industrial duty
- ⚡ NEMA 56C, 140TC, 180TC three-phase motors sized between 0.55 kW and 2.20 kW
- ⚡ DC permanent-magnet motors with flange-adapter kit (IEC 63B14 or 71B14)
- ⚡ Servo motors through custom input-cartridge adapter (contact engineering for pre-sales verification)
Available Accessories & Options
Partner With Us — Distribution & OEM Opportunities
Ever-power operates a tiered distributor programme for Australian and New Zealand industrial resellers, machinery OEMs, and repair-and-service specialists. Our distribution partners access volume pricing, priority technical support, and direct engineering-desk contact for application sizing.
Email: sprzedaż@nmrv-gearbox.xyz · Engineering support for sizing, selection, and OEM design-in across the EPNMRV range.
