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                                                                                                                                                            Ultra High Efficiency IE4 Motor, W21 Series IE4 Motor, IECEx IE4 Efficiency Motor
                      

Type:	Servo Drive Motor	Warranty:	Original Manufacturer's Warranty
Pakage:	Original Pakage	Shipping Term:	International Express（DHL/FEDEX/TNT/UPS/ARAMEX）/sea Freight / Air Freight / International Special Line
Freight Charge:	For Industrial Equipment (e.g., PLC Modules, Inverters..), Shipping Cost Varies By Package Weight/volume And Delivery Location. Contact Our Sales Team For A Customized Shipping Solution And Quote

Type:	Servo Drive Motor
Warranty:	Original Manufacturer's Warranty
Pakage:	Original Pakage
Shipping Term:	International Express（DHL/FEDEX/TNT/UPS/ARAMEX）/sea Freight / Air Freight / International Special Line
Freight Charge:	For Industrial Equipment (e.g., PLC Modules, Inverters..), Shipping Cost Varies By Package Weight/volume And Delivery Location. Contact Our Sales Team For A Customized Shipping Solution And Quote

IECEx W21 Series Ultra High Efficiency IE4 Motor Energy Saving Long Lifespan

W21 Series Ultra-High Efficiency IE4 Motor - Energy Saving, Long Lifespan, Worldwide Supply

The W21 Series covers a power range of 0.18KW - 350KW (0.25HP - 500HP) with frame sizes from 63 to 355. It is available in both cast iron and aluminum housing options, catering to diverse industrial application needs.

Structural Features

Frame & End Shields

Cast iron frames and end shields are made of FC200 cast iron, which enhances thermal conductivity and ensures high mechanical strength. Motors with aluminum housings feature lightweight design and superior heat dissipation. All end shields are equipped with drain holes to discharge condensed water inside the frame.

Grounding

For cast iron motors: Frames 80-200 are provided with two grounding points (one inside the terminal box, one on the frame). Frames 225-355 have one grounding point inside the terminal box and two on the frame.
For aluminum housing motors: One grounding point is standard and located inside the terminal box.

Fan Covers

Motors with frame sizes 63-355 are equipped with standard steel fan covers, which effectively protect the fans and ensure optimal heat dissipation.

Terminal Boxes

Terminal boxes are made of FC200 cast iron, with ample internal space for easy wiring. They can be rotated by 90 degrees, enabling flexible installation.

Additional Features

Protection Class

All motors are designed with IP55 protection rating, suitable for outdoor use or dusty, humid environments without requiring additional protective devices.

WISE Insulation System

The stator has enhanced electrical strength, allowing the motor to operate with frequency converters without being damaged by peak voltages. It is fully compatible with WEG frequency converter products.

Lubrication Cycle

Under normal operating conditions:

2-pole motors (frames 82-280): Maintenance-free lubrication for 20,000 hours
4-pole motors (frames 82-280): Maintenance-free lubrication for 40,000 hours
High-power 2-pole motors: Lubrication required every 2,000-3,000 hours
High-power 4-pole motors: Lubrication required every 4,000-6,000 hours

Core Technical Specifications

Parameter	Specification
Model Series	W21 Three-Phase Induction Motor
Frame Size	Cast iron: 63-355M/L; Aluminum: 63-200M/L
Rated Power Range	0.16 kW - 315 kW (0.21 HP - 422 HP)
Number of Poles	2, 4, 6, 8 poles
Rated Frequency	50 Hz/60 Hz (dual-frequency compatible)
Rated Voltage	220/380 V, 380/660 V, 230/460 V, 440 V, etc. (±5% voltage tolerance)
Efficiency Class	IE2 (EFF2), IE3 (EFF1), IE4
Insulation Class	Class F (WISE Insulation System)
Protection Rating	IP55 (TEFC Enclosure)
Mounting Type	B3, B5, B35, B3D, etc. (Terminal box rotatable 90°)
Duty Cycle	S1 (Continuous Operation)
Rotor Type	Squirrel-cage, aluminum die-cast
Ambient Temperature	40°C (up to 1000 m altitude)
Bearing & Lubrication	Frames ≤132: Sealed bearings; Frames ≥160: Re-greasing system; 2-pole (82-280 frame): 20,000 h lubrication-free; 4-pole (82-280 frame): 40,000 h lubrication-free
Service Factor	1.0 (Standard); 1.15 (Optional)
Shaft Material	Carbon steel 1040/45
Paint Color	RAL 5007 (Blue)

Application Fields

The W21 Series motors are suitable for various industrial scenarios, including pumps, fans, crushers, conveyors, machine tools, milling machines, centrifuges, presses, elevators, looms, grinders, woodworking machinery, cooling equipment, and packaging equipment.

Frequently Asked Questions

Q1: Can the W21 series motor work with a non-WEG frequency converter?

Yes. Its WISE insulation system boosts stator electrical strength, so it can handle peak voltages from most mainstream VFDs. Just make sure the VFD matches the motor's voltage and power specs.

Q2: What's the difference between cast iron and aluminum housing models?

Cast iron ones (frame 63-355) are tough for heavy-duty use like crushers. Aluminum ones are lighter, great for equipment that needs easy installation, like conveyors or packaging machines. Both have IP55 protection.

Q3: How often do I need to re-lubricate the W21 motor?

For frames 82-280: 2-pole motors = 20,000 hours; 4-pole motors = 40,000 hours (no oil needed in this period). High-power models: 2-pole = 2,000-3,000 hours; 4-pole = 4,000-6,000 hours between lubrications.

Q4: Is the W21 series suitable for outdoor or dusty environments?

Absolutely. It has a standard IP55 rating, which keeps dust and water jets out. You can use it directly for outdoor pumps, fans, or mining conveyors without extra protection.

Q5: Does the W21 motor support dual voltage/frequency?

Yes. It uses a wide-voltage design (±5% of rated voltage). It can run on dual voltages and frequencies, like 220V/380V 50Hz or 440V 60Hz—perfect for factories with variable power supplies.

Q6: Where are the grounding points located?

Cast iron frames 80-200: 1 in the terminal box, 1 on the frame.
Cast iron frames 225-355: 1 in the terminal box, 2 on the frame.
Aluminum frames: 1 standard grounding point in the terminal box.

Q7: Can the terminal box be rotated for easier wiring?

Yes. The FC200 cast iron terminal box can be rotated 90 degrees, so you can adjust the wiring direction to fit your installation space.

Q8: What efficiency classes are available for the W21 series?

You can choose from EFF2 (IE2, standard), EFF1 (IE3, high-efficiency), and super-high efficiency models above EFF1 (IE4). Higher efficiency saves more energy and cuts long-term costs.

Tags:

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IECEx W21 Series Ultra High Efficiency IE4 Motor Energy Saving Long Lifespan

Ultra High Efficiency IE4 Motor

W21 Series IE4 Motor

IECEx IE4 Efficiency Motor

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