Descripción
Reductor combinado de tornillo sin fin y hélice EPPC071/NMRV050
The EPPC071/NMRV050 combines a 71 mm helical pre-stage with a 50 mm NMRV worm main stage, delivering 100 Nm rated output torque at up to 1.1 kW input power through combined ratios from 10:1 to 700:1. This is our most frequently specified frame for general industrial duty in the Australian market – packaging-line conveyors, CIP-tolerant food processing drives, and mid-size agitator reducers at water-treatment facilities. The 11.3 kg assembled weight maintains compatibility with single-person installation on conveyor-side brackets.
EPPC071/NMRV050 Specifications
Full technical data for the EPPC071/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.
| Especificación | Valor |
|---|---|
| Designación del modelo | EPPC071/NMRV050 |
| Configuración | Reductor combinado de gusano helicoidal (etapa previa helicoidal + etapa principal de gusano NMRV) |
| Tipo de etapa previa | PC071 helical gear pre-stage (approximately 96 percent efficient) |
| Tipo de escenario principal | Etapa principal del reductor de tornillo sin fin NMRV050 |
| Distancia al centro | 71 + 50 mm |
| par de salida nominal | 100 Nm |
| Rango de relación combinada | 10:1 a 700:1 |
| Eficiencia mecánica combinada | aproximadamente el 78 por ciento |
| Velocidad del eje de salida (entrada de 4 polos a 1400 rpm) | 2.0 – 140 rpm |
| Potencia de entrada de la etapa previa (máx.) | 1.1 kW |
| Orificio de salida (eje hueco) | 25 mm |
| Diámetro del eje de salida (eje macizo) | 25 mm |
| Capacidad de carga radial de salida | 2800 N |
| Brida del motor – NEMA | 56 °C / 140 °C |
| Brida del motor – IEC | B5 / B14 |
| Material de vivienda | Aleación de aluminio fundido a presión ADC12 (ambas etapas) |
| Material para engranajes helicoidales | Acero aleado cementado 20CrMnTi, rectificado |
| Material del eje del tornillo sin fin | Acero aleado cementado 20CrMnTi, rectificado ISO grado 6 |
| Material de la rueda helicoidal | Fundición centrífuga de bronce de estaño CuSn12 |
| Lubricante | PAG sintético ISO VG 320 (llenado en fábrica, cámara compartida) |
| sellos de eje | Juntas de doble labio de Viton (FKM) |
| Protección contra la entrada de polvo y agua | IP55 (actualización para laberinto disponible) |
| Posiciones de montaje | B3, B6, B7, B8, V5, V6 |
| Peso ensamblado | 11.3 kg |
Engineering Features of the EPPC071/NMRV050
Six core design characteristics that distinguish the helical-worm combined EPPC071/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.
Salida autoblocante preservada
La etapa principal del tornillo sin fin NMRV conserva la característica de autobloqueo típica de los engranajes de tornillo sin fin de alta reducción. Las aplicaciones que requieren una condición de retención de carga estática en la salida (inclinaciones de transportadores, mesas indexadoras de rotación lenta) se benefician del comportamiento de autobloqueo sin necesidad de un freno mecánico adicional.
Escenario principal estándar de NMRV
La etapa principal utiliza el mismo bastidor reductor de tornillo sin fin NMRV que nuestra gama de una sola etapa, lo que garantiza la compatibilidad del patrón de montaje, las dimensiones del eje de salida y la intercambiabilidad de las piezas de repuesto. Los juegos de engranajes helicoidales de reemplazo en campo para la etapa principal provienen del mismo inventario que nuestra gama de productos NMRV independientes.
Carcasa de aluminio ADC12
Tanto la carcasa de la etapa previa como la de la etapa principal utilizan aleación de aluminio fundido a presión ADC12 para una óptima conductividad térmica y resistencia a la corrosión. El peso total de la unidad es típicamente entre un 30 y un 40 por ciento menor que el de un tornillo sin fin helicoidal de hierro fundido equivalente con el mismo rango de torsión, lo que simplifica su manipulación durante la modernización y la instalación.
Lubricación sintética PAG
El sistema de transmisión combinado se llena de fábrica con poliglicol de alquileno sintético ISO VG 320. La etapa previa helicoidal y la etapa principal de tornillo sin fin comparten una cámara de aceite común en la configuración combinada. El volumen de aceite calibrado de fábrica mantiene la orientación de montaje declarada sin necesidad de ajustes en campo.
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.
Typical EPPC071/NMRV050 Applications Across Australia
The EPPC071/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.
Manipulación de materiales y logística
For material handling and logistics duty, the EPPC071/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 78 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.
Procesamiento de alimentos y bebidas
In food and beverage processing applications, the EPPC071/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.
Tratamiento ambiental y de aguas
For environmental and water-treatment service, the EPPC071/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.
Agricultura y producción primaria
For agricultural and primary-production applications, the EPPC071/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.
Minería y procesamiento de minerales
In mining and minerals-processing service, the EPPC071/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.
How to Specify the EPPC071/NMRV050 Correctly
Se especifica un reductor combinado de tornillo sin fin helicoidal cuando la potencia de entrada, el funcionamiento continuo o el comportamiento térmico del gabinete hacen que la ventaja de eficiencia sobre un equivalente de tornillo sin fin de dos etapas sea operativamente significativa. Tres comprobaciones son importantes: el par de salida requerido, la relación combinada requerida y la potencia de entrada continua real del motor en el punto de funcionamiento. Nuestro departamento de ingeniería verifica las tres con respecto al perfil de funcionamiento del cliente antes de emitir una recomendación de dimensionamiento.
1. Confirmar el par de salida
Required torque at the output must fall within the 100 Nm rating of the EPPC071/NMRV050. Apply an appropriate service factor (1.0 uniform / 1.25 moderate shock / 1.5 heavy shock) on the nominal load torque.
2. Establecer la razón combinada
La velocidad de salida requerida en la carga accionada determina la relación combinada. Las relaciones combinadas disponibles abarcan desde 10:1 hasta 700:1 mediante diferentes combinaciones de relación entre la etapa previa y la etapa principal. Especifique la velocidad de salida objetivo para lograr la relación adecuada.
3. Confirmar la potencia del motor
Pre-stage input-power capacity is 1.1 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.
EPPC071/NMRV050 Technical Questions
The most common technical questions our engineering desk receives on the EPPC071/NMRV050 from Australian OEM design engineers, plant maintenance leads, and specification consultants. Additional questions are welcome by email to our engineering team.
Is the EPPC071/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 EPPC071/NMRV050 carry?
Our quality management system is ISO 9001:2015 certified. The EPPC071/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.
¿Existen modificaciones personalizadas para el eje?
En la etapa principal de salida, se ofrecen longitudes de eje personalizadas, chaveteros no estándar, ejes de salida de doble extensión para configuraciones de doble accionamiento y tapas protectoras para los extremos del eje. Se aplican requisitos de cantidad mínima para las variantes de eje que no figuran en el catálogo. Las especificaciones detalladas se intercambian con nuestro departamento de ingeniería durante la fase de cotización.
¿Pueden suministrar variantes aptas para uso alimentario o resistentes al lavado?
Se ofrecen, bajo pedido, lubricante sintético con clasificación USDA H1, mejora de los sujetadores de acero inoxidable y sistemas de pintura resistentes al lavado para exposición diaria a productos cáusticos CIP. Especifique sus requisitos al solicitar un presupuesto para que la fábrica pueda configurar el lubricante adecuado, la compatibilidad con el elastómeros de sellado y el acabado superficial tanto para la preetapa helicoidal como para la carcasa de la etapa principal NMRV.
What combined efficiency does the EPPC071/NMRV050 achieve?
Combined mechanical efficiency of the EPPC071/NMRV050 is approximately 78 percent across the normal operating range, the product of the helical pre-stage (approximately 96 percent) and the NMRV worm main stage (78 to 85 percent depending on the main ratio). This is substantially higher than the 50 to 70 percent typical of two-stage worm arrangements, translating to measurable motor-electrical consumption savings on continuous-duty applications.
When would I choose the EPPC071/NMRV050 over a two-stage worm reducer?
Specify the EPPC071/NMRV050 when: input power is above 0.5 kW and electrical consumption matters, continuous-duty operation is the norm (conveyors, processing lines), impact loading or frequent starts stress the drive train, or thermal headroom in enclosed cabinet installations is constrained. Choose a two-stage worm when very high combined ratios above 700:1 are required, since the helical pre-stage cannot reach the ultra-high ratios of a two-stage worm configuration.
What Engineers Say About the EPPC071/NMRV050
Opiniones verificadas de clientes de ingeniería australianos e internacionales. Los nombres y las empresas se publican con autorización. El texto de las reseñas se parafrasea cuando es necesario para proteger la confidencialidad de los detalles del proyecto.
EPPC071/NMRV050 units installed on our new feed-conveyor drive project last year. Continuous-duty operation at elevated summer ambient was the key stressor on the previous equipment. The helical-worm combined design delivers the output torque we need at measurably lower motor-electrical consumption compared to the outgoing two-stage worm reducers.
The EPPC071/NMRV050 addresses the efficiency requirement on our new food-processing conveyor platform for EU-market export. Helical pre-stage thermal behaviour under continuous-duty operation was a specification driver – our customers run these lines for long production campaigns without cabinet cooling.
Evaluating the EPPC071/NMRV050 for inclusion on our grain-handling screw-conveyor product range. The input-power capacity at the helical pre-stage is the key differentiator against our current two-stage worm specification. Factory documentation quality supported the qualification-sign-off process.
Stocking the EPPC071/NMRV050 for the Indian processing-industry market. Customer feedback on the helical-worm combined efficiency and cabinet-temperature behaviour has been positive in the food-processing and pharmaceutical-manufacturing segments. Build-quality consistency across batch shipments has been reliable.
The EPPC071/NMRV050 runs our bottling-line spindle drives after a production-line retrofit. The motor-electrical consumption reduction compared to the previous two-stage worm reducers has been quantified on the plant SCADA historical data – meaningful annual savings across the multi-line facility.
Configuraciones combinadas de gusano helicoidal relacionadas
Three related helical-worm combined reducers across different torque and input-power envelopes. If the EPPC071/NMRV050 is close but not exactly matched to your duty requirement, one of the alternatives below may deliver a better specification fit.
Explorar el catálogo completo gama combinada de gusano helicoidal o comparar con el Alternativas combinadas de lombrices de dos etapas.
Ready to Specify the EPPC071/NMRV050?
Envíe los parámetros de su ciclo de trabajo a nuestro departamento de ingeniería en Australia para obtener una recomendación sobre el tamaño adecuado, opciones de motores compatibles y un presupuesto definitivo. Las consultas técnicas las gestiona el ingeniero responsable del producto, no un departamento de ventas genérico.
