EP-NMRV-E050 Aluminium Worm Gearbox

🔗 Worm-Direction Tail Output Shaft — The Key Differentiator

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.

🅆 Encoder & Feedback Ready

The tail output shaft provides a direct connection point for rotary encoders, tachogenerators, and pulse generators that monitor worm shaft speed in closed-loop motion control systems, eliminating external encoder brackets and coupling hardware.

🚫 IP54 — Dual-Seal Integrity

Both the main output bore and the tail shaft exit are sealed with dual-contact lip seals, maintaining IP54 protection across all mounting orientations without oil weeping at either shaft interface.

🚮 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.

★★★★★

“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)

⚡ IEC Motors (B5/B14)

Standard AC motors with matching IEC flange. VFD inverter-duty versions available for variable-speed control.

🔗 Output Shaft Kits

Single solid (DZ), double-ended (SZ), output flange (F), hollow flange (FL) — all H7/h6 tolerance with standard keyways.

🔨 Torque Arms & Brackets

Steel torque reaction arms for shaft-mount configurations; foot-mounting plates for B3/B6 orientations.

🔒 Seal & Breather Kits

Replacement lip-seal kits, vented breather plugs, and magnetic drain plugs for extended service intervals.