NGC MPT Series Tower Mill Gearbox Introduction
The MPT Series Tower Mill Gearbox, a specialized transmission solution developed by Nanjing High Accurate Gear (NGC), integrates modular planetary gear technology from the MP industrial standard platform with scenario-specific optimizations for vertical spiral tower mills. Tailored to the harsh operating conditions of mineral processing industries, this series is engineered to meet the unique structural requirements of tower mills, delivering exceptional reliability, smooth operation, and easy maintenance for fine grinding applications.
At the core of its design is a multi-stage planetary gear train configuration, optimized via advanced finite element analysis (FEA) to achieve a compact footprint and reduced weight—weighing approximately 30% less than traditional parallel-shaft gearboxes of the same specification. This coaxial input-output design enables vertical installation on high-altitude platforms, perfectly adapting to the space constraints of tower mill systems. The gear system adopts high-quality alloy steel with carburizing, quenching, and precision grinding processes, complying with ISO, AGMA, and DIN standards, ensuring superior load-bearing capacity and resistance to impact loads common in mineral grinding.
Targeted for mining environments, the MPT Series features a segmented housing structure, where internal gear rings are sealed and connected to housing sections, enhancing structural rigidity while facilitating maintenance. A dedicated forced lubrication system with efficient cooling ensures stable oil temperature control, extending bearing lifespan to over 80,000 hours. The non-contact sealing combination of mechanical labyrinth and oil slinger effectively prevents dust, ore particles, and moisture intrusion, safeguarding internal components in dusty, humid working conditions.
Widely applied in fine grinding of non-ferrous metals, gold, and non-metallic minerals, the MPT Series offers flexible technical parameters to match diverse tower mill models. It seamlessly integrates with NGC’s MGDS-T permanent magnet gear drive system, boosting drive efficiency by 8%, reducing starting current by 50%, and cutting maintenance workload by 60%. Backed by NGC’s strict quality control and rich experience in mining transmission solutions, the MPT Series provides stable, efficient power transmission for tower mills, becoming a reliable guarantee for continuous production in mineral processing industries.
NGC MPT Series Tower Mill Gearbox Specifications
Note: Vertical planetary gearboxes for tower mills (mining/metallurgy), high axial load capacity, maintenance-free sealing. Weights are for standard reducer only (motor weight additional; IEC/NEMA/DIN frames compatible).
| Model | Approx. Weight | Motor Combination (Power Range) |
|---|---|---|
| MPT112, MPT125, MPT140, MPT160, MPT180, MPT200, MPT225, MPT250, MPT280, MPT315 | 1,000kg – 4,500kg | Three-phase induction motors (132kW – 800kW); IE3/IE4 high-efficiency, inverter-duty; 2–3-stage ratios 22:1 – 45:1 for medium tower mills |
| MPT355, MPT400, MPT450, MPT500, MPT560, MPT630, MPT710, MPT800, MPT900, MPT1000 | 4,800kg – 12,500kg | 750kW – 2,250kW motors; 3–4-stage ratios 35:1 – 70:1, reinforced thrust bearings for heavy-duty tower mills |
| MPT-FL-112, MPT-FL-125, MPT-FL-140, MPT-FL-160, MPT-FL-180 | 1,050kg – 4,800kg | 160kW – 900kW motors; flange-mounted, compact for space-constrained tower mill installations |
| MPT-FT-112, MPT-FT-125, MPT-FT-140, MPT-FT-160, MPT-FT-180 | 1,100kg – 5,000kg | 185kW – 1,000kW motors; foot-mounted, rigid base for high-load tower mill drives |
| MPT-VS-112, MPT-VS-125, MPT-VS-140, MPT-VS-160, MPT-VS-180 | 1,150kg – 5,200kg | 200kW – 1,100kW motors; vertical solid shaft, high axial load for vertical tower mill drives |
| MPT-VH-112, MPT-VH-125, MPT-VH-140, MPT-VH-160, MPT-VH-180 | 1,200kg – 5,500kg | 220kW – 1,250kW motors; vertical hollow shaft, taper-lock for quick impeller/shaft installation |
| MPT-SERVO-112, MPT-SERVO-125, MPT-SERVO-140, MPT-SERVO-160 | 1,100kg – 4,800kg | Servo motors (90kW – 630kW); low-backlash (<10 arcmin), precise speed control for metering tower mills |
| MPT-IE5-112, MPT-IE5-125, MPT-IE5-140, MPT-IE5-160 | 1,150kg – 5,000kg | IE5 ultra-premium PMSM motors (132kW – 710kW); high efficiency, low energy for sustainable t |
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