200W output, Four brush, Four magnet, 16 pole. 11 tooth sprocket to suit a chain pitch around 7mm. Double ball bearing for long life. Mounting bracket with 4 treaded holes 6mm X 1mm (M6). This motor is excellent for use in robotics, machinery, model trains and vehicles (as used in our large scooters/bikes). 

• 24VDC operation
• Rated speed: 2750 RPM
• Rated current: 10.2A
• Measures: 100mm Dia. X 80mm L (+ shaft)
• Shaft: 27mm X 8mm  (8mm x 1.25mm (M8) LEFT HAND THREAD end)
• Weight: ~2kg

These are very powerful for their small size and although they are built for 24V use they still produce lots of torque at 12V. They start rotating at only 0.5VDC, (yes 1/2 of a volt). 

We discovered that these permanent magnet DC motors would make great generators. If you want to know how to generate over 100W using these motors check out ReNew magazine  (www.ata.org.au) issue 90 Jan-Mar 2005 and read the results of their tests