These brand-spanking new 12VDC motors are made to move automobile seats but are willing to change. They spin at approx 190 rpm, draw 1.5A no load, and stall at approx 25A. Threaded shaft is at a right angle and is 4-1/8" x 7/16". Shaft thread is non-standard, so treat it as a smooth shaft and mount pulley or gear with a setscrew. Measures 5-5/8" x 2-1/2" x 2-1/2" overall, not counting the shaft, and has power terminals opposite the gearbox with (2) 1/4" mounting holes opposite the shaft.
Attention robotics boffins: Here's a nice, powerful 12-24VDC Mabuchi brush motor with a gearbox and pulley attached. At its nominal 24VDC, it spins 45rpm, draws 280mA no load, and stalls a 750mA. 7.5 in-lbs of torque and is rated for continuous duty. Has a 3/4" long x 5/16" flattened shaft with a 4-5/8" dia x 5/16" wide (3/16" ID) single-sheave pulley attached, with a matching O-ring. The gearbox measures 2-3/4" x 3" x 9-1/16". The motor measures 1-1/16"dia x 1-5/8" long and comes with 7" leads and a 2-pin Molex connector.
Our motorman, CJ, called this reversible 12-24VDC motor strange, mostly because it has the power contacts mounted on the face, bracketing the 11/16" x 1/8" mostly striated shaft, and has no mounting brackets. But that shouldn't stop a clever person like you. (Hint: it was probably made to fit into a sleeve of some sort.) At 12VDC, draws 100mA no load, stalls 850mA and spins approx 900 rpm; at 24VDC, draws 150mA, stalls 2.2A and spins approx 1800 rpm. Measures 2-1/4" x 1-13/32" dia.
These small, new motors for oil-heater louvered doors were made for, but never installed in, WWII-era B-17s and B-24s. High torque, low rpm, these collectible 24VDC 1.5A motors measure 5-1/8" long x 3-1/2" dia on the shaft side and 2-3/8" dia on the other end, in a blunted bullet shape. The 15-tooth output shaft is 3/4" long x 1/2" dia, centered on the large end with a trim screw offset for some speed control, and a 4-pin Amphenol connector. Rated at 24VDC but will operate between 12-26VDC. These are of particular interest to us because the sample, at least, was manufactured right down the road from us in Rockford, Illinois, by the Barber-Colman Company!
This motor on this 12-volt linear actuator is 6" x 3" x 6" overall. Output is through both a 2-draw mast that measures 2" dia at bottom, with a flattened 3/4"-10 threaded rod that extends 5-1/2" past the top draw and a keyed 1-1/4" long x 5/8" hex shaft below the gearbox (approx 400 rpm). Draws 4.5A at 12VDC no load, stalls at 30A. Retracted length is 35", extended length is 66" counting the rod and hex shaft. Stroke approx 30".
Our motor dude calls this DC reversible gear motor "very interesting." Rated for 3-24VDC with speed ranging from 75 to 654 rpm. The current draw is very low, 2.4mA no load and the highest readable stall current is 90mA. The motor itself is 1-11/16" long x 11/16" dia with a 7/16" long x 3/32" dia shaft with a 9mm (approx 3/8") single sheave, 2mm ID pulley on it. Motor is connected to a monodirectional drive assembly with some mystery circuitry glued to it. Feel free to discard this. Motor is German, gearhead and drive train are Swiss.
It's not all chocolates and wrist watches in Switzerland; they also make mighty nice motors. This small, reversible inline DC gear motor from Maxon is nominally rated at 36VDC continuous duty; 140mA and 152 rpm. At 12VDC it spins approx 30 rpm. Measures 1-15/16" long x 15/16" dia with a 3/16" long x 1/8" dia flattened shaft and 1-1/4" leads. Stalls at 250mA.
This reversible 12VDC motor draws 500mA no load and stalls at 2.5A, spins at approx 2,000 rpm and measures 2-3/4" long x 1-7/16" dia with a 3/16" long x 1/8" dia shaft and threaded 3/32" mounting holes on one end with 1/4" long x 3/16" dia shaft on the other end.
CJ, our VP for Knowing Stuff About Motors, calls this a beast of a 12VDC intermediate-duty gear motor from Bosch. Draws 3A no load and stalls at 10A; spins approx 60 rpm. Measures 7-3/8" x 2-1/2" x 1-3/4" with a 10" 4-wire lead with Molex connectors. Output is through a 3/8" ID plastic bushing with crosswise slots.
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