Stepper Motors
If going for the smaller NEMA 14 motors, aim for the high torque option. You need approximately 1400 g.cm of holding torque or more to be safe. NEMA 14s are neater, lighter and smaller, but can be hard to get hold of. NEMA 17s are quite easy to get in the specification that Mendel needs, but are bulkier and less neat. NEMA 14s are running near the edge of their envelope: they will get warm. NEMA 17s are well inside what they can do, and will run cool.
Below is a list of possible suppliers and motors. Please add to it. If you have built a Mendel successfully with a given motor, remember to put Yes in the tested field.
Vendor (with link) | Shipping location | Manufacturer | Model # | Datasheet | NEMA (Size) | Torque | Shaft | Tested | Additional notes |
Motion Control Products | Unknown | Unknown | FL35ST36-1004B | FL35ST36-1004B Datasheet | 14 | 13.7 N-cm | . | true | Used in mendel prototype |
Active Robots | UK | Wantai/Phidget (?) | Phidget 3301 | 3301 Datasheet | 14 | ?? | 4.9mm | true | None |
Zapp Automation | Unknown | Unknown | SY42STH47-1684B | SY42STH47-1684B Datasheet | 17 | . | . | true | None |
Interinar Electronics, LLC | US | Oriental Motors | Vexta PX243M-01AA | PX243M-01AA Datasheet | 17 | . | . | ? | Not strong enough for direct drive extruder, Uses Imperial #4-40 TPI mounting holes instead of M3 metric |
Alltronics.com | US | Lin Engineering | 4218L-01-10 | 4218L-01-10 Datasheet | 17 | ~53 Ncm | 3/16 inch = 4.7625 mm (Round) | ? | None |
Alltronics.com | US | Lin Engineering | 4218L-01-11 | 4218L-01-11 Datasheet | 17 (?) | ~53 Ncm | ~5 mm = 0.1968 inches (D-Shape) | true | None |
Phidgets.com | US | Wantai/Phidgets(?) | Wantai 42BYGHW811 | 3303 Datasheet | 17 | . | 4.9mm | ? | None |
Robot Gear | AU | Mercury Motor | SM-42BYG011-25 | SM-42BYG011 Datasheet | 17 | 23 N-cm | 5mm | false | None |
[1] AusXMods | AU | Rugao Xinhe | 17H185H-04A | Unknown | 17 | ~43.8 N-cm | . | ? | None |