Beskrivning
EP-NRV-E110 — Shaft-Input Aluminium Worm Gearbox with Tail Output Shaft
Technical Specifications — EP-NRV-E110
| Parameter | Värde |
|---|---|
| Serie | NRV-E (Solid Shaft Input, No Flange, Worm-Direction Tail Output Shaft) |
| Centrumavstånd | 110 mm |
| Reduktionsförhållanden | 5, 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 80, 100 |
| Nominell ingångseffekt | Up to 7.5 kW |
| Utgångshastighetsområde | 14 till 280 r/min (vid 1400 r/min ingående varvtal) |
| Maximalt utgående vridmoment | 9,232 N·m |
| Ingångskonfiguration | Solid shaft input (no IEC flange) + worm-direction tail output shaft |
| Input Shaft | Solid keyed shaft input |
| Utgående bakaxel | Snäckriktning (koaxiell med snäckaxeln, motsatt ände) |
| Höljets material | Pressgjuten aluminiumlegering |
| Snäckhjulsmaterial | Fosforbrons |
| Material för maskaxel | 20CrMnTi-legerat stål, sätthärdat, precisionsslipat |
| Utgångshålsdiameter | 42 mm H7 with keyway |
| Smörjning | ISO VG 220 växellådsolja (fabriksfylld) |
| Monteringspositioner | B3, B6, B7, B8, V5, V6 |
| Skyddsklass | IP54 |
| Omgivningstemperatur | -10°C till +40°C |
NRV-E110 Performance Table (7.5 kW / 1400 r/min)
| Förhållande (i) | Utgångshastighet (r/min) | Utgående vridmoment (N·m) | Servicefaktor (fs) |
|---|---|---|---|
| 7.5 | 187 | 2,359 | 2.6 |
| 10 | 140 | 2,597 | 2.0 |
| 15 | 93 | 2,973 | 1.5 |
| 20 | 70 | 3,272 | 1.1 |
| 25 | 56 | 3,509 | 1.1 |
| 30 | 47 | 3,745 | 1.1 |
| 40 | 35 | 4,285 | 1.9 |
| 50 | 28 | 4,905 | 1.4 |
| 60 | 23 | 5,399 | 1.4 |
| 80 | 18 | 5,816 | 1.2 |
| 100 | 14 | 9,232 | 1.5 |
✅ Kärnfunktioner och unika fördelar
🔗 Snäckriktningsaxel med bakre utgående axel — Den viktigaste skillnaden
The defining feature of the NRV-E110 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.
🚢 Heavy Chain + Crane Position Feedback
At 7.5 kW chain input with 12,000 N radial load capacity, the NRV-E110 is the standard choice for instrumented crane chain drives requiring both heavy chain power transmission and precise encoder position feedback.
◯ Same Torque as Standard NRV110
The NRV-E110 delivers identical maximum output torque (9,232 N·m) to the standard NRV110, 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.
🅆 Kodare och feedback-klar
Den bakre utgående axeln utgör en direkt anslutningspunkt för roterande pulsgivare, takogeneratorer och pulsgeneratorer som övervakar snäckaxelns hastighet i slutna rörelsestyrningssystem, vilket eliminerar externa pulsgivarfästen och kopplingshårdvara.
🚫 IP54 — Dubbeltätad integritet
Både huvudutgångshålet och bakaxelns utgång är tätade med dubbelkontakt-läpptätningar, vilket bibehåller IP54-skydd i alla monteringsriktningar utan att olja läcker ut vid någon av axelgränssnitten.
🏭 Applikationsscenarier
🚢 Crane Travel Feedback
Large-frame NMRV-E110 worm gearbox for overhead crane long-travel drives where the tail shaft encoder provides position feedback to the crane control system, enabling precise load positioning.
⚙ Chemical Reactor Remote Monitoring
High-torque worm gear reducer with tail output shaft for large chemical reactor agitators where the tail shaft tachometer feeds into the plant DCS for real-time agitator speed verification.
🍲 Heavy Mining Instrumented Drives
Aluminium worm gearbox with tail shaft for underground mine face-conveyor drives where the tail-mounted rotation sensor provides safety interlock signals to the mine-wide emergency stop system.
💧 Municipal Water SCADA Integration
NMRV-E110 worm gearbox for large-diameter sludge thickener drives where the tail shaft speed signal integrates directly into the water authority SCADA system for remote performance monitoring.
🔎 Urvalsguide
Worked Example — Crane Chain Position Feedback
Required: NRV-E110 at i=60, chain-driven from 7.5 kW hydraulic motor, tail shaft to crane position encoder. Output speed = 23 r/min, torque = 5,399 N·m. Tail shaft: 1,000 PPR encoder, 42 mm bore. ✅ NRV-E110-60 selected.
⚖ NRV-E110 vs Standard NRV110
| Särdrag | EP-NRV-E110 (with Tail Shaft) | EP-NRV110 (Standard) |
|---|---|---|
| Utgående bakaxel | ✅ Ja — maskriktning | Inga |
| Montering av pulsgivare/återkoppling | Direkt på stjärtaxeln | Kräver externt fäste |
| Dubbellastdrivning | Ja — huvud + svans | Nej — endast en utgång |
| Huvudutgångsmoment | 9,232 N·m | 9,232 N·m |
| Husets mått | Något längre (utskjutande stjärtskaft) | Standardlängd |
| Shaft Input | Yes — solid keyed shaft | Yes — solid keyed shaft |
NRV-E110 Main Output Shaft Dimensions
| G1 (mm) | K1 (mm) | L/DZ (mm) | L1/SZ (mm) | b2 (mm) | d h6 (mm) | kilspår |
|---|---|---|---|---|---|---|
| 155 | 162 | 249 | 324 | 12 | 42 | M16 |
❓ Vanliga frågor
What is the tail output shaft on the EP-NRV-E110 and how is it different from the main output?
The tail shaft on the NRV-E110 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 9,232 N·m load torque.
Does the tail shaft reduce the main output torque of the NRV-E110?
No. The tail shaft draws only the small torque needed for its connected device. The main output retains the full 9,232 N·m rating, identical to the standard NRV110.
What is the input shaft specification for the NRV-E110?
The NRV-E110 has a solid keyed input shaft (no IEC flange). The shaft diameter matches the equivalent NMRV110 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-E110 tail shaft?
Any standard keyed rotary encoder with the matching bore diameter can be mounted on the NRV-E110 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-E110.
Can the NRV-E110 be used for closed-loop speed control in a chain-driven system?
Yes. The NRV-E110 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.
⭐ Kundrecensioner
★★★★★
“Our warehouse crane chain drives use NRV-E110 units with tail-shaft encoders providing position feedback to the crane management system. Load positioning accuracy improved to plus/minus 10 mm and crane cycle times reduced by 18% due to more confident positioning.”
Richard H. — Facilities Engineer, Warehouse 🇦🇺 Australia (VIC)
★★★★★
“We chain-drive NRV-E110 units on our port grain conveyor and use the tail-shaft speed signals for automatic throughput calculation. The terminal management system now tracks tonnes per hour in real time without manual sampling.”
James N. — Port Engineer, Grain Terminal 🇦🇺 Australia (SA)
★★★★☆
“The NRV-E110 drives our underground mine face-conveyor chain. The tail-shaft rotation sensor provides emergency-stop interlock signals and self-locking at ratio 40 ensures the conveyor cannot backdrive when the chain drive stops. Critical safety feature.”
Liam O. — Mining Maintenance Manager, Coal Mine 🇮🇿 New Zealand
⚙ Tillbehör och kompatibla produkter
⚡ IEC-motorer (B5/B14)
Standard AC-motorer med matchande IEC-fläns. VFD-växelriktarversioner finns tillgängliga för variabel hastighetsreglering.
🔗 Utgående axelsatser
Enkel solid (DZ), dubbel (SZ), utgående fläns (F), ihålig fläns (FL) — alla H7/h6-toleranser med standardkilspår.
🔨 Momentarmar och fästen
Momentreaktionsarmar i stål för axelmonterade konfigurationer; fotmonteringsplattor för B3/B6-orienteringar.
🔒 Tätnings- och avluftningssatser
Reservtätningssatser för läppar, ventilerade luftningspluggar och magnetiska dräneringspluggar för förlängda serviceintervall.
Enquire About EP-NRV-E110
Our engineers will confirm the input shaft key, radial load, and encoder specification for your heavy chain-driven crane or port application.
De EP-NRV-E110 aluminium worm gearbox combines a solid shaft input (no IEC flange) with an additional worm-direction tail output shaft. Centre distance 110 mm, ratios 5 to 100, input power up to 7.5 kW, max output torque 9,232 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.
