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Permanent Magnet Direct Drive (PMDD) Pulley for Iron & Steel Industry

Project Overview

Customer	Nanjing Meishan Industrial Development Co., Ltd. (Mining Division)
Location	Meishan Mining, Nanjing, Jiangsu, China
Application	Belt Conveyor (No. 30, Flotation Concentrator Filtration Area)
Equipment	FTY75-1.6-800×1000(380) PMDD Pulley
Commissioning Date	May 2021

Challenge: Inefficient Traditional Drive System

The original conveyor system used a three-phase induction motor + gearbox, which had:
• High energy loss (only 71% system efficiency)
• Frequent maintenance (grease/oil changes, gear wear)
• Bulky design (3.13-ton motor + gearbox system)
• High startup current & mechanical stress

Solution: Jasung PMDD Pulley

✅ Direct Drive Technology – Eliminates gearbox, couplings, and auxiliary components.
✅ High Efficiency (97% system efficiency) – Saves 28% energy vs. traditional systems.
✅ Maintenance-Free Operation – No gearbox lubrication, reducing downtime.
✅ Compact & Lightweight (2.1 tons) – 34% weight reduction, saving installation space.

Performance Comparison

Parameter	Original System	Jasung PMDD Pulley	Improvement
System Efficiency	71%	97%	↑ 26%
Annual Energy Savings	—	80,881 kWh	(≈ 9.95 tons of coal)
Maintenance Cost	High (grease/oil)	Near-zero	↓ 80%
Equipment Weight	3.13 tons	2.1 tons	↓ 34%

Key Benefits

✔ Energy Savings = Lower OPEX
¥42,867/year (at ¥0.53/kWh).
✔ Reliability & Reduced Downtime
No gearbox failures, minimal bearing maintenance.
✔ Space Optimization
Compact design simplifies installation.
✔ Soft Start & Smooth Operation
Low inrush current, no mechanical shock.

Onsite video

Customer Feedback

"The Jasung PMDD pulley reduced our energy costs by 28% and eliminated gearbox maintenance. Its compact design and high efficiency align perfectly with our sustainability goals."

— Meishan Mining Maintenance Team