گیربکس حلزونی آلومینیومی EP-NRV150

🔗 15 kW Shaft Input — Maximum NRV Power

The NRV150 is the most powerful standard NRV shaft-input worm gearbox, accepting 15 kW from any chain, belt, hydraulic motor, or engine countershaft. No other standard aluminium worm gearbox in the NRV range exceeds this power level.

📈 16,508 N·m — NRV Series Maximum

The flagship output torque for the NRV shaft-input series, enabling single-stage worm reduction on port conveyor head-end drives, crane hoist drums, and heavy reactor agitators that previously required multi-stage gearbox arrangements.

◯ 50 mm Output Bore — Maximum Interface

The 50 mm H7 hollow output bore and DZ solid shaft provide the largest output interface in the NRV series, matching heavy-duty chain sprocket hubs and agitator shaft diameters in the 15 kW power class.

⛁ 18,000 N Input Radial Load Rating

The NRV150’s input bearing assembly handles up to 18,000 N of radial load at ratio 30 — the highest in the entire NRV series — enabling use with triple-strand or large-pitch double-strand roller chain drives at 15 kW.

🅆 ~40 kg at 16,508 N·m

The NRV150 achieves 16,508 N·m in approximately 40 kg, delivering the best torque-to-weight ratio of any standard shaft-input worm gearbox at this power level and simplifying installation logistics on elevated platforms and offshore equipment.

🚢 Port & Bulk Material Chain Drives

Maximum-torque shaft-input worm gear reducer for port grain unloader chain drives, ship-loader boom conveyor chain drives, and dry-bulk terminal stacker-reclaimer chain slewing drives in the 11–15 kW range.

🏹 Heavy Crane Hoist Chain Drives

Flagship NRV aluminium worm gearbox for gantry crane hoist drum chain drives, offshore crane luffing chain mechanisms, and heavy industrial hoist winch chain drives at 14–25 r/min output speed.

📥 Large Reactor & Mixer Chain Drives

High-torque shaft-input worm gear reduction gearbox for large polymer reactor agitator chain drives, bitumen blending vessel chain drives, and heavy chemical kneader machine chain drives requiring 15 kW input at ratio 80–100.

💧 Primary Sludge Treatment Chain Drives

Corrosion-resistant aluminium worm gearmotor alternative for large primary clarifier rake chain drives, anaerobic digester top-entry mixer chain drives, and primary sludge pump chain drives in major metropolitan water treatment plants.

★★★★★

“The NRV150 drives our port grain unloader conveyor at ratio 100 via a triple-strand chain from our central diesel engine. At 15 kW chain input, the gearbox handles our 1,500 t/hr throughput without complaint. The 18,000 N radial load rating gave us confidence to use our existing large-pitch chain without modification.”

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

★★★★★

“We use four NRV150 units on our offshore crane hoist chain drives. The stainless shaft option eliminated galvanic corrosion that affected our previous cast-iron units within 12 months. Two years offshore with zero corrosion issues on any of the four units.”

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

★★★★☆

“Our large primary clarifier uses an NRV150 at ratio 80, chain-driven from a diesel engine. The self-locking at power-off prevents the rake from backdriving, which is critical during maintenance access in the clarifier. Excellent unit for a demanding application.”

Sarah M. — Water Infrastructure Engineer, City Water Authority 🇦🇺 Australia (QLD)

⚡ موتورهای IEC (B5/B14)

موتورهای AC تک فاز و سه فاز استاندارد با فلنج IEC مطابق. نسخه‌های اینورتر VFD نیز موجود است.

🔗 کیت‌های شفت خروجی

تک سر توپر (DZ)، دو سر (SZ)، فلنج خروجی (F)، فلنج توخالی (FL) — تمام تلرانس‌های H7/h6 با شیارهای استاندارد.

🔨 بازوهای گشتاور

بازوهای واکنش گشتاور فولادی برای پیکربندی‌های نصب شفت؛ صفحات نصب پایه برای جهت‌های B3/B6.

🔒 کیت‌های آب‌بندی و هواکش

کیت‌های آب‌بندی لب جایگزین، درپوش‌های تهویه هوا و درپوش‌های تخلیه مغناطیسی برای فواصل سرویس طولانی‌تر.