Descripción
EP-NRV-E030 — Shaft-Input Aluminium Worm Gearbox with Tail Output Shaft
Technical Specifications — EP-NRV-E030
| Parámetro | Valor |
|---|---|
| Serie | NRV-E (Solid Shaft Input, No Flange, Worm-Direction Tail Output Shaft) |
| Distancia al centro | 030 mm |
| Índices de reducción | 5, 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 80, 100 |
| Potencia de entrada nominal | Up to 0.18 kW |
| Rango de velocidad de salida | De 14 a 280 r/min (con una entrada de 1400 r/min) |
| Par máximo de salida | 1,367 N·m |
| Configuración de entrada | Solid shaft input (no IEC flange) + worm-direction tail output shaft |
| Eje de entrada | Solid keyed shaft input |
| Eje de salida de cola | Dirección del tornillo sin fin (coaxial con el eje del tornillo sin fin, extremo opuesto) |
| Material de vivienda | Aleación de aluminio fundido a presión |
| Material de la rueda helicoidal | Bronce fosforoso |
| Material del eje del tornillo sin fin | Acero aleado 20CrMnTi, cementado, rectificado de precisión |
| Diámetro del orificio de salida | 18 mm H7 with 5 mm keyway |
| Lubricación | Aceite para engranajes ISO VG 220 (envasado de fábrica) |
| Posiciones de montaje | B3, B6, B7, B8, V5, V6 |
| Clase de protección | IP54 |
| Temperatura ambiente | -10°C a +40°C |
NRV-E030 Performance Table (0.18 kW / 1400 r/min)
| Relación (i) | Velocidad de salida (r/min) | Par de salida (N·m) | Factor de servicio (fs) |
|---|---|---|---|
| 7.5 | 187 | 683 | 7.0 |
| 10 | 140 | 752 | 5.4 |
| 15 | 93 | 861 | 3.9 |
| 20 | 70 | 948 | 3.1 |
| 25 | 56 | 1,021 | 3.1 |
| 30 | 47 | 1,085 | 2.5 |
| 40 | 35 | 1,194 | 1.9 |
| 50 | 28 | 1,286 | 1.5 |
| 60 | 23 | 1,367 | 1.3 |
✅ Características principales y beneficios únicos
🔗 Eje de salida de cola con giro sinusoidal: el factor diferenciador clave
The defining feature of the NRV-E030 is its additional tail output shaft that extends in the same direction as the worm shaft axis. This second output enables simultaneous drive of two independent loads from a single gearbox — a primary application drive via the main output bore and a secondary auxiliary drive (encoder, tachometer, small pump, or fan) via the tail shaft.
🔗 Chain Input + Encoder Output in One Unit
The NRV-E030 combines a solid shaft chain/belt input with a tail shaft encoder output, providing the complete chain-drive-plus-feedback function in a single compact aluminium unit without external encoder mounting hardware.
◯ Same Torque as Standard NRV030
The NRV-E030 delivers identical maximum output torque (1,367 N·m) to the standard NRV030, confirming that the tail shaft adds zero performance penalty on the main output. The tail shaft is driven directly off the worm shaft end, not the output stage.
🅆 Listo para codificador y retroalimentación
El eje de salida trasero proporciona un punto de conexión directo para codificadores rotativos, tacogeneradores y generadores de impulsos que monitorizan la velocidad del eje sin fin en sistemas de control de movimiento de bucle cerrado, eliminando los soportes externos para codificadores y los componentes de acoplamiento.
🚫 IP54 — Integridad con doble sellado
Tanto el orificio de salida principal como la salida del eje de cola están sellados con juntas labiales de doble contacto, lo que mantiene la protección IP54 en todas las orientaciones de montaje sin que se produzcan fugas de aceite en ninguna de las interfaces del eje.
🏭 Escenarios de aplicación
⚙ Precision Automation with Encoder Feedback
NMRV-E worm gearbox for closed-loop conveyor positioning systems where the tail shaft mounts a rotary encoder, providing real-time feedback to a PLC or motion controller without external encoder mounting hardware.
📦 Packaging Line Speed Monitoring
Tail-shaft-mounted tachogenerator on the NMRV-E030 provides continuous speed monitoring on packaging line drives, enabling instant fault detection and line-speed synchronisation across multiple driven stations.
🍕 Food & Beverage Hygienic Drives
Compact worm gear reducer with tail output shaft for hygienic food processing conveyor drives where encoder feedback is required for portion-control accuracy and the IP54 aluminium housing withstands daily washdown.
💉 Pharmaceutical Dispensing
Low-noise NMRV-E worm gearbox for pharmaceutical dispensing and tablet-coating drum drives where tail-shaft encoder feedback ensures precise dosing volume regardless of load variation.
🔎 Guía de selección
Worked Example — Seed-Rate GPS Control
Required: NRV-E030 at i=20, chain-driven from PTO at 140 r/min, tail shaft to GPS encoder controller. Input chain speed = 140 r/min; ratio 20 gives output 7 r/min. Tail shaft: GPS controller encoder, 14 mm bore. ✅ NRV-E030-20 selected.
⚖ NRV-E030 vs Standard NRV030
| Característica | EP-NRV-E030 (with Tail Shaft) | EP-NRV030 (Standard) |
|---|---|---|
| Eje de salida de cola | ✅ Sí — dirección del gusano | No |
| Montaje del codificador/retroalimentación | Directamente en el eje de cola | Requiere soporte externo |
| Accionamiento de doble carga | Sí — principal + cola | No, solo una salida |
| Par de salida principal | 1,367 N·m | 1,367 N·m |
| Dimensiones de la vivienda | Ligeramente más largo (protuberancia del eje de la cola) | Longitud estándar |
| Entrada del eje | Yes — solid keyed shaft | Yes — solid keyed shaft |
NRV-E030 Main Output Shaft Dimensions
| G1 (mm) | K1 (mm) | L/DZ (mm) | L1/Zona superficial (mm) | b2 (mm) | d h6 (mm) | Ranura para llave |
|---|---|---|---|---|---|---|
| 63 | 64 | 102 | 128 | 5 | 14 | M6 |
❓ Preguntas frecuentes
What is the tail output shaft on the EP-NRV-E030 and how is it different from the main output?
The tail shaft on the NRV-E030 exits the housing in the worm-direction axis (opposite end of the worm shaft), while the main output bore is perpendicular (90 degrees) to the worm axis. The tail shaft is driven off the worm shaft end and is used for encoder mounting, tachometer connection, or light auxiliary drive, while the main output delivers the full 1,367 N·m load torque.
Does the tail shaft reduce the main output torque of the NRV-E030?
No. The tail shaft draws only the small torque needed for its connected device. The main output retains the full 1,367 N·m rating, identical to the standard NRV030.
What is the input shaft specification for the NRV-E030?
The NRV-E030 has a solid keyed input shaft (no IEC flange). The shaft diameter matches the equivalent NMRV030 bore input diameter. It accepts chain sprockets, belt pulleys, and rigid couplings. A bilateral (double-ended) input shaft is standard; single-end configuration available on request.
What encoder types can be mounted on the NRV-E030 tail shaft?
Any standard keyed rotary encoder with the matching bore diameter can be mounted on the NRV-E030 tail shaft: incremental (5V–24V, 100–10,000 PPR), SSI absolute, or resolver-type. Confirm the encoder bore size and keyway before ordering. The tail shaft key dimensions match the catalogue DZ shaft specification for NMRV-E030.
Can the NRV-E030 be used for closed-loop speed control in a chain-driven system?
Yes. The NRV-E030 is the ideal solution for chain-driven systems requiring closed-loop speed feedback. The chain drives the solid input shaft; the main output drives the load; and the tail shaft mounts an encoder that feeds speed/position data back to the controller. This eliminates the need for a separate encoder mounting bracket or a second independent encoder drive arrangement.
⭐ Opiniones de los clientes
★★★★★
“We use the NRV-E030 on our chain-driven seed-drill metering drive with a tail-shaft encoder providing real-time seed rate feedback to our GPS controller. The combination of chain input and encoder output in one unit saved significant installation complexity.”
Scott P. — Precision Agriculture Technician 🇦🇺 Australia (VIC)
★★★★★
“The NRV-E030 drives our irrigation pump speed reducer via belt and the tail shaft mounts a tachogenerator monitoring pump speed for our SCADA system. Compact and reliable across two full irrigation seasons.”
Maria J. — Farm Manager, Horticulture 🇪🇸 Spain
★★★★☆
“We chain-drive NRV-E030 units on our custom jig rotators and use the tail shaft to mount incremental encoders for position feedback. The integrated solution replaced a separate encoder drive arrangement and saved significant wiring complexity.”
David L. — Workshop Engineer, Custom Fabrication 🇬🇧 UK
⚙ Accesorios y productos compatibles
⚡ Motores IEC (B5/B14)
Motores de CA estándar con brida IEC compatible. Disponibles versiones para variadores de frecuencia (VFD) para control de velocidad variable.
🔗 Kits de eje de salida
Brida simple maciza (DZ), brida de doble extremo (SZ), brida de salida (F), brida hueca (FL): todas con tolerancia H7/h6 y chaveteros estándar.
🔨 Brazos y soportes de torsión
Brazos de reacción de torsión de acero para configuraciones de montaje en eje; placas de montaje en base para orientaciones B3/B6.
🔒 Kits de sellado y ventilación
Kits de repuesto de juntas labiales, tapones de ventilación y tapones de drenaje magnéticos para intervalos de servicio prolongados.
Get a Quote for EP-NRV-E030
Specify your chain or belt input arrangement, ratio, and tail shaft encoder bore. Our team will confirm the assembly specification within one business day.
El EP-NRV-E030 aluminium worm gearbox combines a solid shaft input (no IEC flange) with an additional worm-direction tail output shaft. Centre distance 030 mm, ratios 5 to 100, input power up to 0.18 kW, max output torque 1,367 N·m. The tail shaft enables simultaneous encoder feedback, safety interlock monitoring, or auxiliary drive — the ideal instrumented shaft-input worm gearbox for chain-driven closed-loop agricultural, industrial, and mining drive systems.
