Does the generator require a gearbox?

No, it is a gearless, direct drive generator designed for low RPM operation.

What materials are used for the shell and shaft?

The generator shell is made of aluminum alloy, and the shaft is made of carbon steel.

What is the efficiency rating?

The efficiency is greater than 85% with low mechanical resistance energy loss.

High-Efficiency Axial Flux Coreless Pm Generator for Grid-Connected Wind Systems

Name: High-Efficiency Axial Flux Coreless Pm Generator for Grid-Connected Wind Systems
Brand: Qingdao Greef New Energy Equipment Co., Ltd.
SKU: 2168007692

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

US$200.00-9,000.00

1 Set

Product profile

Customization

Available

After-sales Service

Yes

Warranty

Yes

Model NO.

GDG

Output Type

AC Three Phase

Generator Type

3 Phase AC Coreless Permanent Magnet Generator

Rated Power

0.3/0.5/1/2/3/5/10kw

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

1 CBM

Trademark

GREEF

Origin

China

HS Code

85016100

Production Capacity

1000 Sets/Year

Key features

Low Start Torque Technology : No hysteresis and gear notches effect make the start torque very low <0.1N.M

High efficiency :No Core cause very low mechanical resistance energy loss "Precise Coil" technology.

Rare earth permanent magnet, multi-poles, small air gap, high power density, large output power.

Gearless direct drive, brush-less, maintenance free.

Higher Reliability: special structure make it bigger ratio of power to volume, power to weight and have long life of 8 times longer than traditional generator.

Higher Utilization for a wind turbine in low wind speed.

Excellent heat dissipation due to the Aluminum alloy outer frame and special internal structure.

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: ≤7.66hTerms 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.