Description
EPPC080/NMRV050 Helical-Worm Combined Reducer
The EPPC080/NMRV050 combines a larger 80 mm helical pre-stage with a 50 mm NMRV worm main stage, delivering 100 Nm rated output torque at an elevated 1.5 kW input-power capacity. This frame is specified for high-utilisation continuous-duty conveyor drives at food processors, bottling-line accumulators running 24/7 campaigns, and cycle-intensive packaging equipment where the larger pre-stage provides improved thermal headroom over the compact PC063 equivalent. Combined mechanical efficiency of approximately 80 percent reduces in-cabinet heat load on enclosed conveyor drives.
EPPC080/NMRV050 Specifications
Full technical data for the EPPC080/NMRV050 helical-worm combined reducer. Values are verified at end-of-line dynamometer test and retained on serial-number record for five years. Non-standard shaft modifications, food-grade lubricant fills, and mounting-position variations are available on request through our engineering desk.
| Specification | Value |
|---|---|
| Model designation | EPPC080/NMRV050 |
| Configuration | Helical-worm combined reducer (helical pre-stage + NMRV worm main stage) |
| Pre-stage type | PC080 helical gear pre-stage (approximately 96 percent efficient) |
| Main stage type | NMRV050 worm reducer main stage |
| केंद्र दूरी | 80 + 50 mm |
| Rated output torque | 100 Nm |
| Combined ratio range | 10:1 to 700:1 |
| Combined mechanical efficiency | approximately 80 percent |
| Output shaft speed (4-pole 1,400 rpm input) | 2.0 – 140 rpm |
| Pre-stage input power (max) | 1.5 kW |
| Output bore (hollow shaft) | 25 mm |
| Output shaft diameter (solid shaft) | 25 mm |
| Output radial load capacity | 2800 N |
| Motor flange – NEMA | 140TC |
| Motor flange – IEC | B5 / B14 |
| Housing material | ADC12 die-cast aluminium alloy (both stages) |
| Helical gear material | 20CrMnTi case-hardened alloy steel, ground |
| Worm shaft material | 20CrMnTi case-hardened alloy steel, ground ISO grade 6 |
| Worm wheel material | CuSn12 tin-bronze centrifugal casting |
| Lubricant | Synthetic PAG ISO VG 320 (factory fill, shared chamber) |
| Shaft seals | Viton (FKM) double-lip seals |
| Ingress protection | IP55 (labyrinth upgrade available) |
| Mounting positions | B3, B6, B7, B8, V5, V6 |
| Assembled weight | 14.2 kg |
Engineering Features of the EPPC080/NMRV050
Six core design characteristics that distinguish the helical-worm combined EPPC080/NMRV050 from alternative two-stage worm reducer constructions. Each feature below is grounded in an operational constraint that Australian OEM specifiers raise during technical qualification.
ADC12 Aluminium Housing
Both the pre-stage and main-stage housings use ADC12 die-cast aluminium alloy for thermal conductivity and corrosion resistance. Combined unit weight is typically 30 to 40 percent lower than a cast-iron helical-worm equivalent of the same torque envelope, simplifying handling during retrofit and installation.
Synthetic PAG Lubrication
Factory fill with ISO VG 320 synthetic polyalkylene glycol across the combined drive train. The helical pre-stage and worm main stage share a common oil chamber in the combined configuration. Factory-calibrated oil volume maintains the declared mounting orientation without relying on field adjustment.
Viton Double-Lip Shaft Seals
Viton (FKM) double-lip seals at both the pre-stage input shaft and the main-stage output shaft. Continuous service rating to 200 degC handles Australian summer ambient inside enclosed packaging cabinets without hardening or premature cracking, common failure modes for nitrile seal alternatives.
IP55 Ingress Protection
Both stages carry IP55 ingress-protection rating as standard. Labyrinth-seal output-shaft upgrade is available for dust-intensive service in mining and grain-handling applications. Marine-grade paint is specified as standard on units destined for coastal bulk-terminal installations.
IEC and NEMA Motor Flanges
The helical pre-stage motor interface accepts IEC B5 or B14 flange-mount motors as well as NEMA 56C, 140TC, 180TC, and 210TC flange-mount motors depending on the pre-stage frame size. Dual-standard compatibility simplifies motor sourcing across Australian and international customer bases.
Six Mounting Orientations
Factory-supported mounting positions B3, B6, B7, B8, V5 and V6. Declared mounting orientation at order stage sets the factory oil-fill volume calibration. Vertical mounts receive additional oil volume to ensure both the helical pre-stage and worm main-stage engagement surfaces remain properly submerged.
Typical EPPC080/NMRV050 Applications Across Australia
The EPPC080/NMRV050 is specified across five primary Australian industry sectors. The descriptions below reflect real installations where the helical pre-stage efficiency advantage over a two-stage worm configuration provides measurable operating-cost benefit or thermal-envelope relief.
Food & Beverage Processing
In food and beverage processing applications, the EPPC080/NMRV050 powers bottling-line spindle drives, palletiser-cell indexing reducers and CIP-tolerant processing conveyors at Australian dairies, craft breweries and meat processors. The higher combined efficiency of the helical pre-stage compared to a two-stage worm configuration matters here because these lines run continuously for long campaigns. Food-grade H1 synthetic lubricant fill is available as a factory option, with stainless fasteners and washdown-tolerant paint on request.
Environmental & Water Treatment
For environmental and water-treatment service, the EPPC080/NMRV050 drives screw-conveyor sludge transport, slow-speed grit-classifier augers and DAF skimmer reducers at municipal and private industrial plants across regional Australia. The IP55 housing and viton lip-seal package handle the corrosive splash environment of chlorination and caustic-dosing zones. The helical pre-stage maintains efficient torque transmission across a wide input-rpm range, enabling VFD-driven variable-speed duty with stable output torque across the operating envelope.
Agriculture & Primary Production
For agricultural and primary-production applications, the EPPC080/NMRV050 is deployed on poultry-house feed-conveyor drives, grain-handling screw-conveyor reducers and irrigation-pump clutch drives on NSW, Victorian and Queensland rural operations. The helical pre-stage efficiency advantage over two-stage worm construction becomes significant where the reducer operates continuously for long periods – electrical consumption on a dairy-shed 24-hour feed line adds up, and the thermal envelope of the aluminium housing handles Queensland summer ambient without active cooling.
Mining & Minerals Processing
In mining and minerals-processing service, the EPPC080/NMRV050 drives ore-sample screw feeders, slow-speed cone-crusher auxiliary reducers and tailings-pond skimmer drives at Pilbara, Kalgoorlie and central Queensland operations. The helical pre-stage provides improved impact-load tolerance compared to worm-only pre-stages – relevant on screen-drive and feeder applications where intermittent shock loading is normal. Labyrinth-seal output upgrade and marine-grade paint are both specified as standard on units destined for tropical-coastal bulk-terminal installations.
Material Handling & Logistics
For material handling and logistics duty, the EPPC080/NMRV050 is specified into continuous-duty roller-conveyor drives, pallet-transfer indexing units and bulk-terminal belt-tensioning reducers at Australian DC operations. The helical pre-stage delivers approximately 80 percent combined mechanical efficiency, substantially higher than the 50 to 70 percent typical of two-stage worm arrangements. At continuous operation this translates to meaningful electrical-energy savings and reduced heat load inside enclosed conveyor cabinets – particularly relevant on 24/7 three-shift Sydney and Melbourne distribution centres.
How to Specify the EPPC080/NMRV050 Correctly
A helical-worm combined reducer is specified when input power, continuous-duty operation, or cabinet-thermal behaviour make the efficiency advantage over a two-stage worm equivalent operationally significant. Three checks matter: required output torque, required combined ratio, and actual continuous motor-input power at the operating point. Our engineering desk verifies all three against the customer duty profile before issuing a sizing recommendation.
1. Confirm Output Torque
Required torque at the output must fall within the 100 Nm rating of the EPPC080/NMRV050. Apply an appropriate service factor (1.0 uniform / 1.25 moderate shock / 1.5 heavy shock) on the nominal load torque.
2. Set Combined Ratio
Required output rpm at the driven load determines the combined ratio. Available combined ratios span 10:1 to 700:1 through different pre-stage and main-stage ratio pairings. Specify target output rpm for a ratio match.
3. Confirm Motor Power
Pre-stage input-power capacity is 1.5 kW maximum. Helical pre-stage efficiency (approximately 96 percent) allows smaller motor sizing than a two-stage worm equivalent for the same driven-load torque.
EPPC080/NMRV050 Technical Questions
The most common technical questions our engineering desk receives on the EPPC080/NMRV050 from Australian OEM design engineers, plant maintenance leads, and specification consultants. Additional questions are welcome by email to our engineering team.
Can I use VFD speed control with the EPPC080/NMRV050?
Yes. The helical pre-stage handles variable-frequency-drive input rpm across the normal VFD operating range (typically 5 to 60 Hz, equating to 150 to 1,800 rpm input). Output torque remains consistent across this range. At very low input rpm (below 5 Hz) lubrication-film wedge at the worm engagement can degrade – consult our engineering desk for extended-low-speed duty-cycle requirements.
What mounting orientations does the EPPC080/NMRV050 support?
Six standard mounting positions: B3 (horizontal, input side up), B6 (horizontal, input side down), B7, B8, V5 (vertical, output down) and V6 (vertical, output up). The factory oil-fill volume is calibrated to the declared mounting orientation – specify the mounting position at quotation stage to ensure correct lubricant quantity on the delivered unit.
Is the EPPC080/NMRV050 compatible with competitor two-stage reducers dimensionally?
The main-stage output-flange pattern follows standard NMRV dimensions, making direct bolt-on retrofit possible for equivalent-frame European and Asian catalogue units from the major brands. Overall envelope dimensions differ slightly with the pre-stage frame size. For retrofit compatibility verification, send the existing-unit dimensional drawings to our engineering desk for a direct envelope comparison.
What certifications does the EPPC080/NMRV050 carry?
Our quality management system is ISO 9001:2015 certified. The EPPC080/NMRV050 carries CE conformity for export markets, RoHS material compliance, and IP55 ingress-protection testing. Certificates of conformity are issued with every shipment and individual-serial-number test records are retained at the factory for five years. Application-specific certifications such as ATEX are available on a project-configured basis.
Are custom shaft modifications available?
Custom output-shaft lengths, non-standard keyways, double-extended output shafts for dual-drive arrangements, and shaft-end protective covers are all available on the main-stage output. Minimum-quantity requirements apply for non-catalogue shaft variants. Drawing-level specification is exchanged with our engineering desk during the quotation stage.
क्या आप खाद्य-योग्य या धुलाई-सहनशील प्रकार उपलब्ध करा सकते हैं?
USDA H1-rated synthetic lubricant factory fill, stainless-steel fastener upgrade, and washdown-tolerant paint systems for daily caustic CIP exposure are all available on request. Specify the requirement at quotation so the factory can configure the correct lubricant, seal elastomer compatibility, and surface finish across both the helical pre-stage and NMRV main stage housings.
What Engineers Say About the EPPC080/NMRV050
Verified customer feedback from Australian and international engineering customers. Names and companies are published with permission. Review text is paraphrased where necessary to protect commercial-in-confidence project detail.
The EPPC080/NMRV050 on slow-speed feeder auxiliary drives at our site. Red-dust environment, variable ambient temperature, continuous-duty operation. We specified the labyrinth-seal output upgrade and marine-grade paint. The helical pre-stage handles intermittent ore-fall impact loading better than the worm-only units we previously specified. Performance through the full wet-season cycle has been solid.
Integrated the EPPC080/NMRV050 into circulation-drive units for our fish-farm agitator product line. Corrosion resistance of the aluminium-housed construction handles the marine salt-air environment well. Helical pre-stage impact-load tolerance matters on circulation-drive start-up where water inertia loads the system momentarily.
Evaluated the EPPC080/NMRV050 for introduction to our distribution catalogue after customer-requested sourcing options. Build inspection at sample-receipt aligned with the datasheet specification, and mechanical-envelope compatibility with European-standard incumbent suppliers was verified. Customer-market response to the helical-worm combined has been positive.
The EPPC080/NMRV050 is being qualified for our heavy-industry conveyor-drive product platform. The input-power capacity at the helical pre-stage and the self-locking output characteristic from the worm main stage together address specifications our customers bring to the machine design stage. Technical exchange with the engineering desk on custom shaft-modification requirements has been productive.
The EPPC080/NMRV050 powers slow-conveyor drives at a regional food-processing client site. Tropical-ambient operation and continuous-duty utilisation stress the reducer envelope, and the helical-worm combined design has handled both well through the first 16 months of service. Corrosion resistance of the aluminium housing in humid ambient has been solid.
Related Helical-Worm Combined Configurations
Three related helical-worm combined reducers across different torque and input-power envelopes. If the EPPC080/NMRV050 is close but not exactly matched to your duty requirement, one of the alternatives below may deliver a better specification fit.
Browse the full helical-worm combined range or compare with the combined two-stage worm alternatives.
Ready to Specify the EPPC080/NMRV050?
Send your duty-cycle parameters to our Australian engineering desk for a sized recommendation, compatible motor options and a firm quotation. Technical enquiries are handled by the engineer responsible for the product, not a generic sales desk.
