Description
EP-NRV-E090 — Shaft-Input Aluminium Worm Gearbox with Tail Output Shaft
Technical Specifications — EP-NRV-E090
| Paramètre | Valeur |
|---|---|
| Série | NRV-E (Entrée à arbre plein, sans bride, arbre de sortie à vis sans fin) |
| Distance du centre | 090 mm |
| Taux de réduction | 5, 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 80, 100 |
| Puissance d'entrée nominale | Up to 5.5 kW |
| Plage de vitesse de sortie | 14 à 280 tr/min (à une entrée de 1400 tr/min) |
| Couple de sortie maximal | 7,306 N·m |
| Configuration d'entrée | Arbre d'entrée plein (sans bride IEC) + arbre de sortie à vis sans fin |
| Arbre d'entrée | entrée d'arbre claveté massif |
| 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 | 35 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 |
NRV-E090 Performance Table (5.5 kW / 1400 r/min)
| Rapport (i) | Vitesse de sortie (tr/min) | Couple de sortie (N·m) | Facteur de service (fs) |
|---|---|---|---|
| 7.5 | 187 | 2,785 | 1.9 |
| 10 | 140 | 3,065 | 1.5 |
| 15 | 93 | 3,882 | 1.2 |
| 20 | 70 | 4,273 | 1.1 |
| 25 | 56 | 4,603 | 1.1 |
| 30 | 47 | 4,891 | 1.2 |
| 40 | 35 | 5,383 | 1.5 |
| 50 | 28 | 5,799 | 1.4 |
| 60 | 23 | 6,163 | 1.2 |
| 80 | 18 | 6,783 | 1.1 |
| 100 | 14 | 7,306 | 0.9 |
✅ Fonctionnalités principales et avantages uniques
🔗 Arbre de sortie à vis sans fin — L'élément clé de différenciation
The defining feature of the NRV-E090 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.
🍲 Mine-Safe Chain Drive + Safety Interlock
The NRV-E090 is purpose-built for instrumented mining conveyor chain drives where the solid shaft input handles engine or hydraulic motor chain pull and the tail shaft provides safety PLC rotation interlock signals.
◯ Same Torque as Standard NRV090
The NRV-E090 delivers identical maximum output torque (7,306 N·m) to the standard NRV090, 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
💧 Sludge Thickener Rotation Monitoring
Heavy industrial NMRV-E090 worm gearbox for municipal sludge thickeners where the tail shaft provides continuous rotation confirmation to the SCADA system, alerting operators instantly to rake stall events.
⚙ Chemical Reactor Feedback Drive
High-torque worm gear reducer with tail output shaft for chemical reactor agitator drives where the tail shaft encoder monitors worm shaft speed and feeds back to a process control system.
🍲 Mining Conveyor Instrumentation
Aluminium worm gearbox with tail shaft for underground mining conveyor take-up drives where the tail-mounted tachometer provides belt-speed data to the mine-wide monitoring and safety system.
📥 Port Conveyor Supervision
Corrosion-resistant worm gearmotor with tail shaft for port bulk material conveyor drives where the tail shaft speed signal confirms conveyor motion to the port operations control room.
🔎 Guide de sélection
Worked Example — Mine Safety Interlock
Required: NRV-E090 at i=60, chain-driven from 5.5 kW engine at 1400 r/min, tail shaft to mine safety PLC. Output speed = 23 r/min, torque = 6,163 N·m. Tail shaft: safety encoder, 35 mm bore. ✅ NRV-E090-60 selected.
⚖ NRV-E090 vs Standard NRV090
| Fonctionnalité | EP-NRV-E090 (with Tail Shaft) | EP-NRV090 (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 | 7,306 N·m | 7,306 N·m |
| Dimensions du logement | Légèrement plus long (protubérance de la tige de queue) | Longueur standard |
| Entrée d'arbre | Oui — arbre claveté massif | Oui — arbre claveté massif |
NRV-E090 Main Output Shaft Dimensions
| G1 (mm) | K1 (mm) | L/DZ (mm) | L1/SZ (mm) | b2 (mm) | d h6 (mm) | Keyway |
|---|---|---|---|---|---|---|
| 140 | 154 | 234 | 309 | 10 | 35 | M12 |
❓ Foire aux questions
What is the tail output shaft on the EP-NRV-E090 and how is it different from the main output?
The tail shaft on the NRV-E090 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 7,306 N·m load torque.
Does the tail shaft reduce the main output torque of the NRV-E090?
No. The tail shaft draws only the small torque needed for its connected device. The main output retains the full 7,306 N·m rating, identical to the standard NRV090.
What is the input shaft specification for the NRV-E090?
The NRV-E090 has a solid keyed input shaft (no IEC flange). The shaft diameter matches the equivalent NMRV090 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-E090 tail shaft?
Any standard keyed rotary encoder with the matching bore diameter can be mounted on the NRV-E090 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-E090.
Can the NRV-E090 be used for closed-loop speed control in a chain-driven system?
Yes. The NRV-E090 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.
⭐ Avis clients
★★★★★
“Our underground mine conveyor NRV-E090 units have tail-shaft rotation sensors integrated into our mine safety PLC. The sensors provide emergency-stop interlock signals when belt motion is lost. Exactly the safety integration we needed for underground compliance.”
Steve K. — Mining Engineer, Coal Mine 🇦🇺 Australia (NSW)
★★★★★
“The NRV-E090 drives our wastewater sludge scraper chain mechanism and the tail shaft pulse counter integrates into our SCADA for remote monitoring. Three years of continuous operation in hydrogen-sulphide atmosphere without corrosion or seal issues.”
Anita R. — Plant Manager, Water Authority 🇮🇿 New Zealand
★★★★☆
“We chain-drive NRV-E090 units on our quarry aggregate conveyor and use the tail-shaft tachometers for belt speed monitoring in our conveyor control system. The belt management system has reduced conveyor-related stoppages by 35% since installation.”
Rob C. — Operations Director, Aggregate Quarry 🇫🇯 Finland
⚙ 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.
Request a Quote for EP-NRV-E090
Our engineering team will confirm the input shaft, ratio, and safety encoder specification for your chain-driven mining or industrial instrumented drive.
Le EP-NRV-E090 aluminium worm gearbox combines a solid shaft input (no IEC flange) with an additional worm-direction tail output shaft. Centre distance 090 mm, ratios 5 to 100, input power up to 5.5 kW, max output torque 7,306 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.
