Forcefield My Account  Cart Contents  Checkout  
  Top » Catalog » Needful Things » 6605 My Account  |  Cart Contents  |  Checkout   
Books-> (37)
Magnets and Magnetism-> (124)
Needful Things (10)
Renewable Energy-> (51)
Rummage Sale (23)
What's New? more
1.5in OD x .35in ID x .56in Ring
1.5in OD x .35in ID x .56in Ring
Quick Find
Use keywords to find the product you are looking for.
Advanced Search
Magnet Safety
Magnet Facts
Magnet Types
Uses and Demos
Wind Power
Low RPM Axial Flux alternator

Axial Flux Low RPM Alternator

DUE TO A BACKLOG OF ORDERS, WE ARE NOT CURRENTLY ACCEPTING ORDERS FOR THIS ITEM. Please Email us for more information on when this alternator will be available again.

Due to lots of inquiries lately, we have decided to offer a basic 3 phase low rpm axial flux alternator on a stand for... whatever! This is the same basic alternator that we use for our 10' diameter wind turbine. It's an axial flux alternator built on a stand so that it could be bolted down for whatever application you choose. Primarily, this alternator could be invaluable for education. It is a 3 phase alternator and we will fit whatever stator you like to it, depending on your requirements. The power output depends on the load and the rpm. The practical limit for this machine is about 1000 rpm - running it faster could results in balance problems or other mechanical issues. The alternator is not safe to run over 1000 rpm.

People have used these for pedal power, hydro power, small steam engines, education, we use one on our 600 rpm Listeroid diesel engine (in that application it produces 2kW very efficiently). The alternator features two magnet rotors with a stator in between. Each magnet rotor has 12 poles (magnets). The magnets are 1" x 2" x 1/2" thick, N42 grade NdFeB.

Pictured above is the power curve for this alternator when it's clamped to a battery charging system such that open voltage of the alternator reaches battery voltage at 140 rpm. The power curve could be better, or worse, depending upon how the machine is actually loaded. The alternator does not cog and has no iron losses. You choose the stator of your choice. Look through the shopping cart to see power curves on our different stators. If you would like a more powerful, or efficient version of this machine ~ we can fit larger magnets for additional cost. Please contact us about that. Normally the stator is wired in WYE (star) configuration, however upon request we can bring out 3 more leads for each phase so you have the option to wire the stator in Delta. Doing so results in higher efficiency at any given voltage, but the rpm must be higher.

In short, the alternator is about exactly the same as we would build for a 10 foot diameter wind turbine. The magnet rotors are fit to a wheel hub, which runs on tapered roller bearings fit to a stationary spindle. The whole alternator is held together by 4 studs, the bolt pattern is 4 on 4 inch diameter. All of the hardware is stainless steel, and the alternator itself is powder coated with a durable hammer tone finish.

This is a powerful and efficient low rpm alternator ~ there are many smaller/must less powerful low rpm alternators available, online that are basically converted automotive alternators. This machine is in a different league.

Above is a short movie demonstrating this same machine.

We build these to order. Should you order one, please contact us about which stator you require and any other special requests. Expect 4 to 6 weeks for delivery. DUE TO A BACKLOG OF ORDERS, WE ARE NOT CURRENTLY ACCEPTING ORDERS FOR THIS ITEM. Please Email us for more information on when this alternator will be available again.

Current Reviews: 2
This product was added to our catalog on Monday 28 June, 2010.
Jan 1st 2012 - Due to the acquisition of Forcefield by Amazing Magnets, we have temporarily disabled purchasing on the shopping cart. For immediate needs for magnets please visit For wind power products visit
Related Products
Related Categories
 No other products were found for this manufacturer.
Shopping Cart more
0 items
Manufacturer Info
Other products
Notifications more
NotificationsNotify me of updates to Low RPM Axial Flux alternator
Reviews more
Low RPM Axial Flux alternator
I will add these to my collection as well. http://www.23ch-
ea ..

5 of 5 Stars!
Shipping & Returns
Privacy Notice
Conditions of Use
Contact Us

Linux Powered website! Our company does not use Microsoft products.
All content ©2005 by FORCEFIELD.
Best viewed with ANY browser! Our company does not use Microsoft products.

Copyright © 2003 osCommerce
Powered by osCommerce