Descrição
EP-NMRV-E050 — IEC Flange Input Aluminium Worm Gearbox with Tail Output Shaft
Technical Specifications — EP-NMRV-E050
| Parâmetro | Valor |
|---|---|
| Série | NMRV-E (Bore Input with IEC Flange, Worm-Direction Tail Output Shaft) |
| Distância do centro | 050 mm |
| Taxas de redução | 5, 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 80, 100 |
| Potência de entrada nominal | Até 1,1 kW |
| Faixa de velocidade de saída | 14 a 280 rpm (com entrada de 1400 rpm) |
| Torque máximo de saída | 4.280 N·m |
| Configuração de entrada | Bore input with IEC input flange + worm-direction tail output shaft |
| Flanges de entrada IEC | IEC flanges: 63B5, 63B14, 71B5, 71B14, 80B14 |
| Eixo de saída da cauda | Direção do parafuso sem-fim (coaxial com o eixo do parafuso sem-fim, extremidade oposta) |
| Material de construção | Liga de alumínio fundido |
| Material da roda sem-fim | Bronze fosforoso |
| Material do eixo sem-fim | Aço liga 20CrMnTi, cementado, retificado com precisão |
| Diâmetro do furo de saída | 25 mm H7 with keyway |
| Lubrificação | Óleo de engrenagem ISO VG 220 (adicionado de fábrica) |
| Posições de montagem | B3, B6, B7, B8, V5, V6 |
| Classe de proteção | IP54 |
| Temperatura ambiente | -10°C a +40°C |
NMRV-E050 Performance Table (1.1 kW / 1400 r/min)
| Razão (i) | Velocidade de saída (rpm) | Torque de saída (N·m) | Fator de serviço (fs) |
|---|---|---|---|
| 7.5 | 187 | 683 | 2.3 |
| 10 | 140 | 752 | 1.8 |
| 15 | 93 | 861 | 1.3 |
| 20 | 70 | 948 | 1.0 |
| 30 | 47 | 1,085 | 1.0 |
| 40 | 35 | 2,475 | 2.1 |
| 50 | 28 | 2,865 | 2.3 |
| 60 | 23 | 3,153 | 1.7 |
| 80 | 18 | 3,610 | 1.6 |
| 100 | 14 | 4,280 | 1.4 |
✅ Principais funcionalidades e benefícios exclusivos
🔗 Eixo de saída com rotação helicoidal — O principal diferencial
The defining feature of the NMRV-E050 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.
🅆 VFD + Encoder in One Unit
The NMRV-E050 works seamlessly with VFD-driven IEC motors while the tail shaft simultaneously provides speed/position feedback, creating a closed-loop VFD-gearbox-encoder assembly without external sensor brackets.
◯ Same Torque as Standard NMRV050
The NMRV-E050 delivers identical maximum output torque (4,280 N·m) to the standard NMRV050, 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.
🅆 Pronto para Encoder e Feedback
O eixo de saída traseiro fornece um ponto de conexão direta para encoders rotativos, tacogeradores e geradores de pulsos que monitoram a velocidade do eixo sem-fim em sistemas de controle de movimento de circuito fechado, eliminando suportes de encoder externos e componentes de acoplamento.
🚫 IP54 — Integridade com Vedação Dupla
Tanto o furo de saída principal quanto a saída do eixo de cauda são vedados com vedações labiais de contato duplo, mantendo a proteção IP54 em todas as orientações de montagem, sem vazamento de óleo em nenhuma das interfaces do eixo.
🏭 Cenários de Aplicação
🚮 Closed-Loop Conveyor Control
NMRV-E050 worm gearbox for heavy conveyor drives where the tail shaft mounts a tachogenerator providing speed feedback to a VFD controller, enabling precise belt speed regulation under variable load.
⚙ Industrial Mixer Monitoring
Heavy-duty worm gear reducer with tail output shaft for industrial mixer drives where the tail shaft speed signal monitors worm shaft rotation, detecting stall conditions in high-viscosity batches.
💧 Water Treatment Instrumented Drives
Aluminium worm gearbox with tail shaft for slow-speed filter screen and sludge scraper drives where a tail-mounted pulse counter provides the operations team with real-time rotation confirmation.
📦 Print Line Register Control
Worm gear reduction gearbox with tail output for gravure printing press section drives where the tail shaft encoder provides master-line speed reference for digital register control systems.
🔎 Guia de Seleção
Worked Example — Industrial Mixer with VFD
Required: NMRV-E050 at i=50 driving a mixer at 28 r/min with tachometer feedback to VFD. Output torque from table = 2,865 N·m. Motor: 0.75 kW, IEC 80B14. Tail shaft: tachogenerator, 25 mm bore. ✅ NMRV-E050-50-80B14 selected.
⚖ NMRV-E050 vs Standard NMRV050
| Recurso | EP-NMRV-E050 (with Tail Shaft) | EP-NMRV050 (Standard) |
|---|---|---|
| Eixo de saída da cauda | ✅ Sim — direção da minhoca | Não |
| Montagem do codificador/feedback | Diretamente no eixo da cauda | Requer suporte externo |
| Acionamento de carga dupla | Sim — principal + cauda | Não — apenas uma saída |
| Torque de saída principal | 4.280 N·m | 4.280 N·m |
| Dimensões da Habitação | Ligeiramente mais comprido (protrusão da haste caudal) | Comprimento padrão |
| IEC Flange Input | Yes — standard | Yes — standard |
NMRV-E050 Main Output Shaft Dimensions
| G1 (mm) | K1 (mm) | L/DZ (mm) | L1/SZ (mm) | b2 (mm) | d h6 (mm) | Chaveta |
|---|---|---|---|---|---|---|
| 92 | 99 | 153 | 199 | 8 | 25 | M10 |
❓ Perguntas Frequentes
What is the tail output shaft on the EP-NMRV-E050 and what is it used for?
The tail output shaft on the NMRV-E050 is a secondary shaft extending in the worm-direction axis (co-axial with the worm shaft, opposite end). It is used to mount rotary encoders, tachogenerators, or pulse generators for speed/position feedback, or to drive a small auxiliary load such as a lubrication pump, cooling fan, or pilot valve simultaneously with the main output drive.
Does the tail shaft affect the main output torque of the NMRV-E050?
No. The tail shaft is driven directly off the worm shaft end and carries only the small torque required for the encoder or auxiliary device. The main output bore delivers the full rated 4,280 N·m, identical to the standard NMRV050.
What encoder types are compatible with the NMRV-E050 tail output shaft?
The tail shaft is a standard keyed shaft accepting any incremental or absolute rotary encoder with the matching bore size. Common options include 5–24V incremental encoders (100–10,000 PPR), SSI absolute encoders, and resolver-type feedback devices. Confirm the encoder bore and key dimensions with the encoder supplier before ordering.
Which IEC motor flanges are available for the EP-NMRV-E050?
The NMRV-E050 accepts the following IEC input flanges: 63B5, 63B14, 71B5, 71B14, 80B14. This covers the standard motor frame range for the 1.1 kW power class. Servo and stepper motor adaptor plates available on request.
Can the NMRV-E050 tail shaft be used to drive a secondary load simultaneously?
Yes, provided the secondary load torque on the tail shaft does not exceed the worm shaft’s additional torque capacity. For light-duty secondary loads such as small lubrication pumps (below 0.05 kW) or pilot valves, the tail shaft can be used simultaneously without affecting main output performance. Consult our engineering team for secondary loads above 0.05 kW.
⭐ Avaliações de clientes
★★★★★
“Our industrial mixer uses an NMRV-E050 with a tail-shaft tachometer. The tachometer signal feeds our VFD controller and maintains constant impeller tip-speed across varying product viscosities. Mixing uniformity has improved significantly.”
Rosa K. — Process Engineer, Food Ingredients 🇳🇿 New Zealand
★★★★★
“We installed NMRV-E050 units on our wastewater filter screen drives. The tail-shaft pulse counters feed our SCADA system, providing operators with real-time rotation confirmation and instant stall alerts. Highly reliable after 18 months.”
Carlos M. — Plant Manager, Water Treatment Authority 🇨🇱 Chile
★★★★☆
“The NMRV-E050 runs our print-line register control system. The tail shaft provides the master speed reference for our digital register system and print registration errors have been eliminated on fine-screen jobs.”
Michael T. — Production Manager, Print House 🇦🇺 Australia (NSW)
⚙ Acessórios e Produtos Compatíveis
⚡ Motores IEC (B5/B14)
Motores CA padrão com flange IEC compatível. Versões para inversores VFD disponíveis para controle de velocidade variável.
🔗 Kits de Eixo de Saída
Simples sólido (DZ), duplo (SZ), flange de saída (F), flange oco (FL) — todos com tolerância H7/h6 e rasgos de chaveta padrão.
🔨 Braços e suportes de torque
Braços de reação de torque em aço para configurações de montagem em eixo; placas de montagem com pés para orientações B3/B6.
🔒 Kits de Vedação e Respiro
Kits de vedação labial de reposição, bujões de respiro ventilados e bujões de drenagem magnéticos para intervalos de manutenção prolongados.
Enquire About EP-NMRV-E050
Our team will confirm the IEC flange, VFD motor compatibility, and encoder specification for your closed-loop industrial drive application.
O EP-NMRV-E050 aluminium worm gearbox combines the bore-input IEC flange convenience of the NMRV050 with an additional worm-direction tail output shaft. Centre distance 050 mm, ratios 5 to 100, input power up to 1.1 kW, max output torque 4,280 N·m. The tail shaft enables simultaneous encoder feedback, tachometer monitoring, or auxiliary drive — the perfect instrumented worm gearbox for closed-loop automation, precision conveyor control, and SCADA-integrated industrial drives.
