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Permanent Magnet Direct Drive Motor for Mixer – No Gearbox, Direct Drive Solution
◇ High Efficiency: IE4/IE5 energy class, 15–30% energy savings vs. traditional drives. ◇ Maintenance-Free: No gear oil/belts. ◇ Precision Control: Speed accuracy ±0.1%, fast dynamic response. ◇ Compact Design: 30–50% smaller than "motor+gearbox" systems.
Classification:
The Application of Mixing Equipment In Industry
Stirring can disperse two or more different substances among each other, achieving uniform mixing; It can also accelerate heat and mass transfer processes. In industrial production, stirring operation starts from the chemical industry and is widely used as part of the process, focusing on food, fiber, papermaking, petroleum, water treatment, hydrometallurgy, etc.
Permanent Magnet Direct Drive Motor (PMDD Motor) Working Principle
The PMDD motor is a high-efficiency drive system that directly couples a permanent magnet synchronous motor (PMSM) with the load, eliminating intermediate transmission components like gearboxes or pulleys. Its core operational principles are as follows:
Magnetic Field Generation
◇ Stator
Composed of three-phase windings that generate a rotating magnetic fieldwhen powered by variable-frequency AC.
◇ Rotor
Embedded with high-performance permanent magnets (e.g., NdFeB), creating a fixed magnetic field.
No external excitation or brushes/slip rings (brushless design).
◇ Synchronous Operation
Interaction between the stator's rotating field and rotor's permanent magnetic field forces the rotor to rotate at synchronous speed(Slip=0).
Speed is precisely adjusted (0–100% rated speed) via frequency control.
◇ Direct Load Coupling
The rotor shaft connects directly to loads (e.g., fan impellers, conveyor drums), bypassing gearboxes/couplings.
| Product | Product Category | Voltage | Power Range | Product Application |
| Permanent Magnet Direct Drive Motor (5-500rpm) | Explosion-proof | 380/415V/460V | 11KW-315KW,355KW-710KW | Oil & gas extraction (drilling rigs, oil pumps, compressors) Refineries (reactor agitators, centrifugal pumps) Chemical plants (flammable liquid transfer, gas compression) Underground ventilation fans, conveyor belt drives Coal dust transport equipment, drainage pumps Alcohol extraction workshops, spray drying towers Flour/sugar powder conveying systems, edible oil pressing equipment |
| 660V | 11KW-315KW,355KW-710KW | |||
| 1140V | 11KW-315KW,355KW-1600KW | |||
| 3300V | 200KW-1600KW | |||
| 6000V | 200KW-1600KW | |||
| 10000V | 200KW-1600KW | |||
| Non-explosion proof | 380/415V/460V | 11KW-315KW,355KW-710KW | For textile/engineering vehicles/belt machine tightening/air cooling island/flotation machine/separator/mixer/grinding machine/ball mill etc | |
| 660V | 11KW-315KW,355KW-710KW | |||
| 1140V | 11KW-315KW,355KW-3000KW | |||
| 3300V | 200KW-3000KW | |||
| 6000V | 200KW-3000KW | |||
| 10000V | 200KW-3000KW |
Advantages
◇ Transmission efficiency >98% (vs. 90–95% for geared systems).
◇ Eliminates gear wear/belt slippage.
◇ Torque Control
◇ Uses FOC (Field-Oriented Control) or DTC (Direct Torque Control) to regulate torque via current phase adjustment.
Core Advantages
◇ High Efficiency: IE4/IE5 energy class, 15–30% energy savings vs. traditional drives.
◇ Maintenance-Free: No gear oil/belts.
◇ Precision Control: Speed accuracy ±0.1%, fast dynamic response.
◇ Compact Design: 30–50% smaller than "motor+gearbox" systems.
Technical Specifications
Rated Speed:250r/min Other voltages customizable, up to 10kV
| Model | Rated Power | Rated current(A) | Rated torque | Rated Speed | Rated Efficiency | Power factor | Max Torque Ratio | ||
| (kW) | 380V | 660V | 1140V | (N.m) | (r/min) | (%) | |||
| JXS-JB-315-40-500-380 | 315 | 531.4 | 306.0 | 177.1 | 12033 | 250 | 94.8 | 0.95 | 2.0 |
| JXS-JB-315-40-500-660 | |||||||||
| JXS-JB-315-40-500-1140 | |||||||||
| JXS-JB-355-40-500-380 | 355 | 598.9 | 344.8 | 199.6 | 13561 | 250 | 94.8 | 0.95 | 2.0 |
| JXS-JB-355-40-500-660 | |||||||||
| JXS-JB-315-40-500-1140 | |||||||||
| - | 400 | - | 388.5 | 224.9 | 15280 | 250 | 94.8 | 0.95 | 2.0 |
| JXS-JB-400-40-500-660 | |||||||||
| JXS-JB-400-40-500-1140 | |||||||||
| - | 450 | - | 433.9 | 251.2 | 17190 | 250 | 95.5 | 0.95 | 2.0 |
| JXS-JB-450-40-560-660 | |||||||||
| JXS-JB-450-40-560-1140 | |||||||||
| - | 500 | - | 482.1 | 279.1 | 19100 | 250 | 95.5 | 0.95 | 2.0 |
| JXS-JB-500-40-560-660 | |||||||||
| JXS-JB-500-40-560-1140 | |||||||||
| - | 560 | - | 540.0 | 312.6 | 21392 | 250 | 95.5 | 0.95 | 2.0 |
| JXS-JB-560-40-560-660 | |||||||||
| JXS-JB-560-40-560-1140 | |||||||||
| - | 630 | - | 607.5 | 351.7 | 24066 | 250 | 95.5 | 0.95 | 2.0 |
| JXS-JB-630-40-560-660 | |||||||||
| JXS-JB-630-40-560-1140 | |||||||||
| - | 710 | - | - | 396.3 | 27122 | 250 | 95.5 | 0.95 | 2.0 |
| - | |||||||||
| JXS-JB-710-40-560-1140 | |||||||||
| - | 800 | - | - | 446.6 | 30560 | 250 | 95.5 | 0.95 | 2.0 |
| 一 | |||||||||
| JXS-JB-800-40-560-1140 | |||||||||
| - | 900 | - | - | 502.4 | 34380 | 250 | 95.5 | 0.95 | 2.0 |
| - | |||||||||
| JXS-JB-900-40-630-1140 | |||||||||
| - | 1000 | - | - | 558.2 | 38200 | 250 | 95.5 | 0.95 | 2.0 |
| - | |||||||||
| JXS-JB-1000-40-630-1140 | |||||||||
| - | 1120 | - | - | 625.2 | 42784 | 250 | 95.5 | 0.95 | 2.0 |
| - | |||||||||
| JXS-JB-1120-40-630-1140 | |||||||||
Benefits of Intelligent Permanent Magnet Direct Drive Motor for Mixers
Reduce equipment maintenance and lower operating costs
◇ Traditional mixers generally use a motor + gearbox drive mode, which has the following drawbacks during operation: frequent gear damage, high consumption of parts and long supply cycles, inconvenient on-site repairs, long downtime leading to significant idle losses, increasing operation and maintenance costs, and decreased equipment efficiency. Conversely, during operation, permanent magnet motors have minimal chances of failure.
Efficient and energy-saving
◇ Energy-saving principle one:Fewer transmission links for energy saving
◇ Elimination of traditional gearboxes, couplers, and other transitional transmission links reduces power transmission losses.
◇ Energy-saving principle two:High efficiency and low energy consumption of direct drive motors
◇ The permanent magnet direct drive motor used achieves international IE4 efficiency standards (higher than national level energy consumption standards).
◇ Energy-saving principle three:Energy-saving soft start:
◇ A special drive to control the start-up and operation of the direct drive motor, ensuring the start-up current does not exceed twice the rated current, reducing the impact on the power grid and power supply capacity requirements.
◇ Energy-saving principle forth: Energy-saving power factor compensation
◇ The power factor of the direct drive motor can reach 0.98, reducing reactive power losses in the power grid.
High starting torque and strong overload capacity
◇ In equipment that requires high starting torque, the phenomenon of "big horses pulling small cats" is effectively solved, greatly improving the heavy-duty starting ability.
Eliminate pollution
◇ By eliminating gearboxes, there is no longer the issue of lubricating oil dripping, thus preventing potential material contamination.
Typical Applications
| Fans/Pumps: Cooling towers, centrifugal fans (direct impeller drive). Conveyors: Belt conveyors, hoists (direct drum coupling). Heavy Machinery: Coal mills, ball mills (high-torque starts),Mixers, Powder Separator Machine |
 |
FAQ
Q:What are the differences between PMSM and induction motors (asynchronous motors)?
Answer:
◇ Higher efficiency: PMSM has no rotor losses, achieving IE4/IE5 efficiency (>96%), while induction motors typically reach IE2/IE3 (90-95%).
◇ More precise control: PMSM supports vector control with ±0.1% speed accuracy, whereas induction motors have slip (2-5%).
◇ Compact size: For the same power rating, PMSM is 30%-50% smaller than induction motors.
◇ Lower maintenance: Brushless design with no slip rings, requiring minimal maintenance.
Q:Can permanent magnets demagnetize? How to prevent it?
Answer:Demagnetization risks: High temperature (>150°C), strong reverse magnetic fields, or mechanical impacts may cause demagnetization.
Preventive measures:
◇ Use high-temperature-resistant magnets (e.g., NdFeB N42SH, HcJ≥35kOe).
◇ Design motor with protective slots for magnets.
◇ Install temperature sensors for real-time monitoring.
Q: Does PMSM require a drive? Can it start directly from line power?
Answer:Drive required:
◇ PMSM needs a variable frequency drive (VFD) for speed control.
◇ Direct line power startup may cause loss of synchronization and current surges (potential motor damage).
◇ Recommended control methods: Field-oriented control (FOC) or direct torque control (DTC).
Q:What are the protection ratings for industrial PMSMs? How to select?
Answer: Common protection ratings:
◇ IP65: Dustproof + water jet protection (suitable for general industrial environments).
◇ IP66/IP67: Dustproof + strong waterproofing (for harsh environments like chemical plants and mines).
◇ Explosion-proof: Ex d IIC T4 (for hazardous areas like oil & gas).
Q:How does PMSM perform under low-speed, high-load conditions?
Answer:Key advantage:
◇ Delivers rated torque at low speeds (induction motors require derating).
◇ Typical applications: Ball mills, crushers, and high-inertia startup scenarios.
Keyword:
High Efficiency
Maintenance-Free
Precision Control
Compact Design
Find Your Products
Keywords:Permanent Magnet Direct Drive Pulley | Permanent Magnet Synchronous Motor | Permanent Magnet Direct Drive Motor
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