EP-NMRV-E150 Aluminium Worm Gearbox

🔗 Worm-Direction Tail Output Shaft — The Key Differentiator

The defining feature of the NMRV-E150 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.

★ Flagship 15 kW IEC + Maximum Tail Shaft

The NMRV-E150 is the only standard aluminium worm gearbox that combines 15 kW IEC 160B5 direct flange mounting with a 50 mm tail shaft encoder output, delivering the maximum performance in the NMRV-E series.

◯ Same Torque as Standard NMRV150

The NMRV-E150 delivers identical maximum output torque (16,508 N·m) to the standard NMRV150, 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.

🚢 Port Crane Hoist with Encoder

Flagship NMRV-E150 worm gearbox for heavy port crane hoist chain drives where the tail shaft mounts a high-resolution encoder providing precise hoist position feedback to the crane management system.

📥 Bulk Conveyor SCADA Monitoring

Maximum-torque worm gear reducer with tail output shaft for bulk material handling conveyor head-end drives where the tail shaft speed signal monitors tonnage throughput in real time.

⚙ Large Chemical Plant DCS Integration

Flagship aluminium worm gearbox with tail shaft for large polymer reactor agitator drives where the tail encoder feeds into the plant DCS providing real-time agitator speed verification.

💧 Primary Treatment Monitoring

NMRV-E150 worm gearbox for large-diameter primary clarifier rake drives where the tail shaft pulse counter provides the water authority operations centre with continuous rake-rotation confirmation.

★★★★★

“Our flagship NMRV-E150 drives the port grain conveyor head-end at ratio 100. The tail-shaft encoder feeds our terminal control system with belt speed data for automatic tonnage calculation. After 14 months of intensive operation, not a single maintenance issue.”

Tony V. — Terminal Engineer, Grain Export Port 🇦🇺 Australia (WA)

★★★★★

“We use four NMRV-E150 units on our heavy crane hoist drives. The tail-shaft high-resolution encoders provide 0.1 mm hoist position accuracy to our crane management system. The integrated encoder mount eliminated 32 hours of custom fabrication work.”

Anders L. — Mechanical Engineer, Offshore Platform 🇳🇴 Norway

★★★★☆

“The NMRV-E150 drives our large polymer reactor agitator. The tail-shaft encoder feeds our DCS with real-time agitator speed. We detected an early-stage bearing issue via speed variation trending and scheduled planned maintenance rather than facing an unplanned shutdown.”

Ibrahim A. — Plant Manager, Polymer Processing 🇪🇬 Egypt

⚡ 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.