Can your company provide OEM service?

Yes, we can provide OEM services.

What is the warranty period for your generators?

All GREEF generators come with a 3-year free warranty starting from the shipment date.

What are the warranty terms for maintenance and shipping?

During the warranty period, the company bears costs for maintenance and freight for quality issues. For out-of-warranty or man-made damage, customers pay labor, material, and freight costs.

70kw Low Rpm Low Torque High Efficiency Free Energy Permanent Magnet Generator Alternator

Name: 70kw Low Rpm Low Torque High Efficiency Free Energy Permanent Magnet Generator Alternator
Brand: Qingdao Greef New Energy Equipment Co., Ltd.
SKU: 782385442

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

Negotiable

1 Set

Product profile

Customization

Available

Output Type

AC Three Phase

Output Power

50W ~ 5600kw

Model NO.

GDF Series

Optional Rpm

20rpm ~ 3000rpm

Optional Voltage

48/96/120/220/230/240/380/400/690/1140VAC

Application

Wind Turbine, Hydro Project

Protection Grade

IP54 or Customized by Your Need

Structure

Steel

Magnetic

Neodymium Magnet NdFeB N38sh

Characteristic

Permanent Magnet Synchronous Generator

Shaft Quantity

Single Shaft or Double Shaft

Weight Range

30kg ~ 13 Ton

Transport Package

Wooden Case

Specification

Depnds on the generator size

Trademark

GREEF

Origin

China

HS Code

85016100

Production Capacity

400 Sets Per Month

Key features

Customizable Specifications: Power 50W-5600kW, RPM 20-3000, Voltage 48-1140VAC, IP54 or Customized

High Efficiency Design: Direct drive with no gearbox, power factor close to 1, multi-poles design

Durable Permanent Magnets: Rare earth Nd-Fe-B N38sh magnets with H class insulation and vacuum impregnation

Long Service Life: Over 20 years lifespan, maintenance-free, capable of 24/7 operation

Comprehensive Warranty: 3-year free warranty covering parts and labor for quality issues

Lifetime Technical Support: Free lifelong technical support and part cost supply available

Complete System Solution: Full on-grid and off-grid solutions provided by Greef technical team

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: ≤7.16hTerms 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:How does your permanent magnet generator work?

Our generator needs to be driven by other energy sources, like wind power, water power, or belts, to generate electric power.

Q:Can your magnetic generator produce electrical power by itself?

No, it requires an external energy source to drive it.

Q:What is the power range of your generator?

We can manufacture generators from 100W to 5000kW.

Q:What is the rotate speed of your generator?

The speed ranges from 20rpm to 3000rpm.

Q:Can you manufacture customized products?

Yes, we can. Please provide detailed requests for power, rpm, voltage, size, and color, and we will make the generator according to your requirements.