Description
Title:
YVFE3 250M-2 Variable Frequency Low Voltage AC Motor
Brief Introduction
Engineered for VFD-driven applications, this variable speed electric motors for sale eliminates common bearing failure modes through precision-crafted mechanical and electrical solutions.
Core Bearing Protection Systems:
Electro-Insulating Architecture: Ceramic-coated shafts and insulated end shields disrupt shaft current paths, preventing electrochemical pitting and grease degradation.
Thermal-Adaptive Lubrication: Dual-channel grease circulation maintains optimal viscosity, eliminating cold-start lockup and high-temperature thinning.
Dynamic Alignment Assurance: Laser-calibrated stator-rotor alignment neutralizes radial magnetic forces that induce eccentric bearing wear.
Contaminant Exclusion: Triple-lip seals with purge ports defend against moisture/particulate ingress in harsh environments.
Critical implementations include:
• Precisely machined bearing seats ensuring operational clearance integrity
• Axial force compensators counteracting skewed rotor slot effects
• Die-cast end shields with reinforced ribs for enhanced heat dissipation
• Induction heating-compatible bearing assemblies preventing thermal damage during installation
The YVFE3 250M-2 motor executes:
Real-time acoustic monitoring via embedded vibration sensors
Optimized oil-retention grooves preventing lubricant overfill
High-precision bearings for heavy-load/high-speed operation
Dimensional stability protocols preventing housing deformation
Validated grease endurance testing, it extends bearing life in centrifugal compressors, extruders, and other high-torque VFD applications through synchronizedelectrical insulation and mechanical stabilization.
Main Technical Parameters
| Frame: | H55 |
| Power Scope: | 0.37KW~315KW |
| Voltage: | 380V, 660V |
| Frequency: | 50~60Hz |
| Number of Poles: | 2P |
| Speed: | 2970rpm |
| Cooling Method | IC416 |
| Protection Grade | IP55 |
| Insulation Class | F(155℃) |
| Duty: | S1 |
| Mounting Type | B35 |
| Standard: | IEC |
| Efficiency Grade: | IE3 |
Why choose Simo Brand YVFE3 series Motor?
YVFE3 Variable Frequency LV Motor adopts an all-copper motor, so it not only has high operating efficiency and strong power but also can achieve efficient heat dissipation. The fan cooling system can keep the temperature of the motor from being too high when it runs for a long time. It can maintain stable output at both high and low frequencies. The high-hardness shaft is finely manufactured, so it is more durable. In order to achieve excellent voltage shock resistance, it has relatively high requirements on the selection of materials and selection of magnet wires, so the performance of insulating materials is better than that of ordinary motors.
Production Details
Frame
- Compact and robust iron casting frame
- Universal installation dimensions
- Customizable


Stator
- 99.9% pure copper winding ensures the output power and efficiency
- Excellent insulation system with 5 more processing flows
- All the windings are fitted in by handwork to ensure all slots are full and avoid any winding flaw.
Rotor
- Aluminum casting rotor with high quality silicon steel rotor core to assure induction efficiency
- Pprecisely machined shafts with good capacity of strength


Testing
- All motors must pass the piece testing before painting and packaging
- Type tests will be regularly performed for each series
Package and delivery
- All motors will be packaged well before delivery
- Plastic cover inside, vacuum tin foil outer and then solid wood box

Applications
The YVFE2 Variable Frequency LV Motor can be widely used in textile, metallurgy, chemical, machine tools and other industries because it can realize constant torque, constant power speed and speed control.
Technical Parameters
| Type | Rated Power
kW |
Rated Current
A |
Speed
r/min |
Efficiency
% |
Power Factor
Cosφ |
Locked Torque | Locked
Current |
Max. Torque | Rated torque
N•m |
No-load Noise
dB(A) |
Weight
Kg |
| Rated
Torque |
Rated
Current |
Rated Torque | |||||||||
| Asynchronous Speed 3000(r/min) | |||||||||||
| YVFE3 250M-2 | 55 | 98.5 | 2970 | 94.3 | 0.90 | 2.0 | 8.0 | 2.3 | 175 | 106 | 378 |




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