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Jasung Gearless Motor Pulley - Permanent Magnet Belt Conveyor Drive​ 60-160kW

When three-phase symmetrical alternating current is applied to the stator windings, the interaction between the rotating magnetic field and the permanent magnets produces torque. This electromagnetic interaction drives the pulley's rotation, enabling motor operation without requiring additional transmission components.

PMDD pulley description

Here's a refined version of your description with improved clarity and flow:

The Jasung outer rotor permanent magnet motor technology features a unique permanent magnet direct drive (PMDD) pulley design. In this configuration:

Stationary Component (Stator Equivalent)​​

◇The central shaft remains fixed, functioning as the motor's stator assembly

◇A laminated stator core, constructed from precision-stacked silicon steel sheets, is securely mounted on the shaft

◇The core contains embedded three-phase stator windings that generate a rotating magnetic field when energized with symmetrical AC current

Rotating Component (Rotor Equivalent)​​

◇The pulley surface serves as the motor's rotor element

◇A rotor assembly composed of laminated silicon steel sheets is fixed to the pulley's inner surface

◇High-performance UH-grade permanent magnets are embedded within the rotor structure, creating a persistent static magnetic field

 

​​Operational Principle​​

When three-phase symmetrical alternating current is applied to the stator windings, the interaction between the rotating magnetic field and the permanent magnets produces torque. This electromagnetic interaction drives the pulley's rotation, enabling motor operation without requiring additional transmission components.

The direct drive design offers enhanced efficiency and reliability by eliminating mechanical transmission losses associated with conventional drive systems.

 

Product Product Category Voltage Power Range Product Application
PMDD Pulley  Explosion-proof  380/415V/460V 11KW-315KW,355KW-710KW  For belt conveyors
660V 11KW-710KW
1140V 11KW-1000KW
3300V 200KW-1600KW
6000V 200KW-1600KW
10000V 200KW-2000KW
Non-explosion proof  380/415V/460V 11KW-315KW,355KW-710KW  For belt conveyors
660V 11KW-710KW
1140V 11KW-1000KW
3300V 200KW-1600KW
6000V 200KW-1600KW
10000V 200KW-1600KW

 

Technical Specifications

PERMANENT MAGNET DIRECT DRIVE PULLEY
Rated voltage: 380V  Other voltages customizable, up to 10KV 

Belt width
(mm)
Pulley diameter
(mm)
Pulley length
(mm)
Belt speed
(m/s)
Rated power
(kW)
Rated speed
(rpm)
Rated torque
(KNm)
Rated frequency
(Hz)
Rated current
(A)
Power factor Rated efficiency
(%)
1400 630 1600 1.60 82 48.5 16.1 12.1 144 0.97 89.3
2.00 110 60.7 17.3 15.2 189 91.0
2.50 132 75.8 16.6 19.0 223 92.6
3.15 160 95.5 16.0 23.9 268 93.4
3.50 185 106.2 16.6 26.5 308 94.2
4.00 220 121.3 17.3 30.3 363 95.0
650 800 750 1.25 40 29.9 12.8 10.0 72 0.97 86.5
1.60 45 38.2 11.2 12.7 80 88.0
2.00 55 47.8 11.0 15.9 96 89.5
2.50 82 59.7 13.1 19.9 141 91.0
3.15 110 75.2 14.0 25.1 186 92.5
3.50 110 83.6 12.6 27.9 185 93.1
4.00 132 95.5 13.2 31.8 221 93.7
4.50 145 107.5 12.9 35.8 241 94.3
5.00 160 119.4 12.8 39.8 264 94.9
1.25 22 29.9 7.0 10.0 39 87.4
1.60 30 38.2 7.5 12.7 53 88.8
2.00 37 47.8 7.4 15.9 64 90.2
2.50 45 59.7 7.2 19.9 77 91.7
3.15 55 75.2 7.0 25.1 93 93.1
3.50 68 83.6 7.8 27.9 114 93.5
4.00 75 95.5 7.5 31.8 125 93.8
4.50 82 107.5 7.3 35.8 136 94.2
5.00 90 119.4 7.2 39.8 149 94.6

 

Permanent Magnet Direct Drive (PMDD) Pulley Motor – Key Advantages​​

◇​​High Torque at Low Speed – No Gearbox Required​​

◇Permanent magnet synchronous motor (PMSM) design delivers high torque even at low speeds

◇Eliminates the need for a gearbox, reducing energy losses and mechanical complexity

◇​​Outer Rotor Design – Integrated Pulley Motor for Maximum Efficiency​​

◇Combines motor and pulley into a single compact unit, removing traditional transmission components

◇​​15–30% lower energy consumption compared to conventional motor-pulley systems

◇​​Simplified System – Fewer Components, Higher Reliability​​

◇​​No gearbox, couplings, or separate mechanical pulley​​

◇​​Lower failure rate – Reduced wear and tear on components

◇​​Smaller footprint – Compact design saves space

◇​​Minimal maintenance – Fewer moving parts mean less servicing

◇​​No unplanned downtime – More reliable operation

◇​​No alignment issues – Eliminates misalignment-related failures

 

PMDD pulley application

Jasung Permanent Magnet Direct Drive Pulley is an energy-efficient driving device that utilizes permanent magnet synchronous motor technology, specifically designed for belt conveyor systems. It is ideal for heavy-duty continuous operation scenarios requiring long service life, low energy consumption, and maintenance-free performance. Below are its main application areas:

 

 Mining Industry 

◇ Coal Mining and Transportation​​

Application: Serves as a driving device for long-distance belt conveyors in underground or open-pit coal mines

Advantages: Explosion-proof design, suitable for high-humidity and high-dust environments

◇ Metal Ore Mining​​

Application: Drives conveyor systems for iron ore, copper ore, and other metal minerals

Advantages: High torque output, capable of handling heavy-load startups

◇ Aggregate and Sand Transportation​​​​

Application: Powers belt conveyors for construction materials like sand and gravel

Advantages: Sealed structure prevents dust ingress

 

FAQ

Q: Applicable Voltages​​

A:PMDD pulleys support multiple voltage levels:

Standard: 380V, 660V, 1140V

High-voltage models: 6000V (e.g., 1120kW model in [2][3][5]) and 10000V (for ultra-high-power applications) .

Q:Power Range​​

A:Conventional power spans  11kW–1600kW , with typical industrial models covering:

11–630kW (standard applications)

Up to 1600kW for heavy-duty mining (e.g., 6×315kW multi-drive systems) .

Q:Multi-Drive Feasibility​​

A: Distributed multi-drive configurations are widely adopted in China, such as:

​​6×315kW​​ setups for long-distance conveyors (>2000m) 

​​4×250kW​​ systems for 2500t/h capacity .

Q:Operating Frequency​​

A: Minimum frequency: ​​5Hz​​ (supports ultra-low speed operation) .

Typical control range: 5–50Hz via vector frequency conversion .

Q: Max Load Capacity​​

A:Currently achieves 5000t/h  (e.g., 1600kW models for mining) .

Q:Standard Belt Speeds​​

A: 0.8–6m/s​​ (adjustable via frequency control) 

Q: Dimensions​​

A: Diameters​​: 500–2000mm  

Q: Belt widths

A: Up to 2400mm (for mining/extreme applications) .

Keyword:

60-160kW

Stationary Component

Rotating Component

Explosion-proof

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Keywords:Permanent Magnet Direct Drive Pulley | Permanent Magnet Synchronous Motor | Permanent Magnet Direct Drive Motor

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