What is the minimum order quantity or customization options?

We offer OEM services with a wide range of models from 300W to 10kW. Customization is available based on specific requests.

How is the product packaged and shipped?

The generator uses inner foam protection and an outer plywood case. Shipping is available by sea (FCL/LCL) or air.

What are the technical specifications for the 3KW model?

The 3KW models are available at 100RPM or 180RPM, with a rated voltage of 220Vac, efficiency >85%, and start torque <1 N.M or <0.5 N.M.

2kw 3kw 5kw Low Start Torque Disc Coreless Permanent Magnet Alternator

Name: 2kw 3kw 5kw Low Start Torque Disc Coreless Permanent Magnet Alternator
Brand: Qingdao Greef New Energy Equipment Co., Ltd.
SKU: 781116552

Shandong, ChinaQingdao Greef New Energy Equipment Co., Ltd.

US$200.00-9,000.00

1 Set

Product profile

Customization

Available

Output Type

AC Three Phase

Generator Type

3 Phase AC Coreless Permanent Magnet Generator

Model NO.

GDG

Rated Power

300W to 10kw

Rated Speed

100-300rpm

Rated Voltage

12-400VAC

Start Torque

< 1 N.M

Generator Shell Material

Aluminum Alloy

Magnetic Material

ND-Fe-B

Structure

out Rotor

Lifetime

20 Years

Service

OEM

Transport Package

Plywood Case

Specification

Medium

Trademark

GREEF

Origin

China

HS Code

85016100

Production Capacity

1000 Sets/Year

Key features

Low Start Torque: Start torque as low as <0.1 N.M enabling operation at very low wind speeds.

Coreless Design: Disc coreless structure reduces volume and weight while eliminating hysteresis.

High Efficiency: Efficiency exceeds 85% with low mechanical resistance and energy loss.

Durable Materials: Constructed with high-stability Nd-Fe-B magnets and aluminum alloy shell.

Long Lifespan: Designed for a lifetime of up to 20 years with 8x longer life than traditional motors.

OEM Service: Full OEM customization available for generator specifications and requirements.

Wide Power Range: Available models range from 300W to 10kW with various RPM options.

Harsh Environment Ready: High standard components designed for extreme environments and excellent heat dissipation.

Company profile

Qingdao Greef New Energy Equipment Co., Ltd.

Shandong, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2014-03-18Nearest Port: QINGDAOAverage Response Time: ≤7.01hTerms of Payment: T/T, PayPal, Western Union, etc.International Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, DDP, CPT, Others, FCA

AI-Powered supplier vetting

SummaryQingdao Greef New Energy Equipment Co., Ltd. is identified as both a trading company and manufacturer/factory in China, offering wind turbines, permanent magnet generators, hybrid systems, and related equipment. Its stated capabilities include generator coverage from 500W to 5MW, two production lines, annual output of 1,000 wind turbine/permanent magnet generator sets, and 6–10 R&D engineers and quality-control staff. The company reports QHSE, ISO 9001, and HSE management certifications, CE-certified exports, warranty periods of 3–5 years, and after-sales service as part of its end-to-end offering. Evidence also supports customization through design, prototyping, production, and quality-control services. However, the provided information does not sufficiently establish financial credibility or a broad customer track record; only one buyer and one trade transaction are listed.

Supplier typeThe supplier is explicitly classified as both a Trading Company and Manufacturer/Factory. Its stated product portfolio includes wind turbine systems, permanent magnet generators, controllers, inverters, solar systems, and batteries, supporting a combined manufacturing and trading role.

CertificationsThe supplier states that its management systems include QHSE, ISO 9001, and HSE. It also states that products exported to Europe, South America, and North America carry CE certification, indicating documented management-system and product-certification claims.

After-Sales capabilityThe company describes end-to-end services including after-sales service and states that exported products have 3–5 year warranty periods. It also claims rapid response and guaranteed quality and on-time delivery through Alibaba Trade Assurance, providing explicit support for post-sale capability.

R&D capabilityThe supplier states that its permanent magnet generators range from 500W to 5MW and offers multiple renewable-energy technologies, including vertical- and horizontal-axis wind turbines, hybrid systems, and disc coreless generators. Its stated engineering and renewable-energy innovation activities support innovation capability, although no independently verified R&D results are provided.

Production capacityThe supplier reports two production lines and annual output of 1,000 wind turbine/permanent magnet generator sets. It also states generator coverage from 500W to 5MW and has 6–10 quality-control staff, providing explicit evidence of established production capacity.

Customization capabilityThe company explicitly claims customized end-to-end solutions covering design planning, schematic development, 3D renderings, physical prototyping, volume production, quality control, and after-sales service. This directly supports customization capability across product-development and delivery stages.

Product Q&A

Q:What is the warranty period?

We provide a free 3-year warranty starting from the shipment date. During this period, the company covers maintenance costs and freight for quality issues.

Q:What is the start torque of the generator?

The start torque is extremely low, ranging from <0.1 N.M to <1 N.M depending on the model, allowing for low start wind speed operation.

Q:What materials are used for the generator shell and magnets?

The generator shell is made of aluminum alloy, and the magnetic material used is high-stability Nd-Fe-B (Rare Earth Permanent Magnet).

Q:What is the efficiency of the magnetic generator?

The generator features high efficiency with a rating of greater than 85% and low mechanical resistance energy loss.

Q:What is the expected lifespan of the product?

The product has a designed lifetime of up to 20 years, which is 8 times longer than traditional motors.