Description
EP-NMRV-E050 — IEC Flange Input Aluminium Worm Gearbox with Tail Output Shaft
Technical Specifications — EP-NMRV-E050
| Paramètre | Valeur |
|---|---|
| Série | NMRV-E (Bore Input with IEC Flange, Worm-Direction Tail Output Shaft) |
| Distance du centre | 050 mm |
| Taux de réduction | 5, 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 80, 100 |
| Puissance d'entrée nominale | Up to 1.1 kW |
| Plage de vitesse de sortie | 14 à 280 tr/min (à une entrée de 1400 tr/min) |
| Couple de sortie maximal | 4,280 N·m |
| Configuration d'entrée | Bore input with IEC input flange + worm-direction tail output shaft |
| Brides d'entrée IEC | IEC flanges: 63B5, 63B14, 71B5, 71B14, 80B14 |
| Arbre de sortie arrière | Sens de rotation de la vis sans fin (coaxial avec l'arbre de la vis sans fin, extrémité opposée) |
| Matériau du boîtier | Alliage d'aluminium moulé sous pression |
| Matériau de roue à vis sans fin | Bronze phosphoreux |
| Matériau de la tige de vis sans fin | Acier allié 20CrMnTi, cémenté, rectifié avec précision |
| Diamètre d'alésage de sortie | 25 mm H7 with keyway |
| Lubrification | Huile pour engrenages ISO VG 220 (remplissage d'usine) |
| Positions de montage | B3, B6, B7, B8, V5, V6 |
| Classe de protection | IP54 |
| Température ambiante | -10°C à +40°C |
NMRV-E050 Performance Table (1.1 kW / 1400 r/min)
| Rapport (i) | Vitesse de sortie (tr/min) | Couple de sortie (N·m) | Facteur de service (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 |
✅ Fonctionnalités principales et avantages uniques
🔗 Arbre de sortie à vis sans fin — L'élément clé de différenciation
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.
Encodeur et retour d'information prêts
L'arbre de sortie arrière fournit un point de connexion directe pour les codeurs rotatifs, les tachymètres et les générateurs d'impulsions qui surveillent la vitesse de l'arbre à vis sans fin dans les systèmes de contrôle de mouvement en boucle fermée, éliminant ainsi les supports de codeur externes et les éléments de couplage.
🚫 IP54 — Intégrité à double joint
L'alésage de sortie principal et la sortie de l'arbre de queue sont tous deux étanches grâce à des joints à lèvres à double contact, maintenant une protection IP54 dans toutes les orientations de montage sans suintement d'huile au niveau de l'interface de l'arbre.
🏭 Scénarios d'application
🚮 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.
🔎 Guide de sélection
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
| Fonctionnalité | EP-NMRV-E050 (with Tail Shaft) | EP-NMRV050 (Standard) |
|---|---|---|
| Arbre de sortie arrière | ✅ Oui — sens du ver | Non |
| Montage de l'encodeur/de la rétroaction | Directement sur l'arbre de queue | Nécessite un support externe |
| Entraînement à double charge | Oui — principal + queue | Non — sortie unique |
| Couple de sortie principal | 4,280 N·m | 4,280 N·m |
| Dimensions du logement | Légèrement plus long (protubérance de la tige de queue) | Longueur standard |
| 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) | Keyway |
|---|---|---|---|---|---|---|
| 92 | 99 | 153 | 199 | 8 | 25 | M10 |
❓ Foire aux questions
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.
⭐ Avis clients
★★★★★
“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)
⚙ Accessoires et produits compatibles
⚡ Moteurs IEC (B5/B14)
Moteurs à courant alternatif standard avec bride IEC correspondante. Versions pour variateur de fréquence disponibles pour la régulation de vitesse.
🔗 Kits d'arbre de sortie
simple plein (DZ), double extrémité (SZ), bride de sortie (F), bride creuse (FL) — tous à tolérance H7/h6 avec rainures de clavette standard.
🔨 Bras de couple et supports
Bras de réaction de couple en acier pour les configurations de montage sur arbre ; plaques de montage de pied pour les orientations B3/B6.
🔒 Kits de joints et de reniflard
Kits de joints à lèvres de rechange, bouchons de ventilation et bouchons de vidange magnétiques pour des intervalles d'entretien prolongés.
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.
Le 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.
