TMCM-1181 V3.0 Hardware Manual (Rev. 0.90 / 2015-JUL-10)
6
3 Mechanical and Electrical Interfacing
3.1 TMCM-1181 Dimensions and Mounting Holes
The dimensions of the controller/driver board are approx. 86mm x 86mm x 27mm in order to fit on the
back of a 86mm stepper motor. Maximum component height (height above PCB level) is around 22mm
above PCB level and 3mm below PCB level. There are four mounting holes for M4 screws (4.2mm
diameter) for mounting the board to a NEMA34 / 86mm stepper motor.
85.9
4.55
67.45
8
2
8
2
R5.9
M4
85.9
81.35
TMCM-1181
72
67.45
18.45
13.9
4.55
13.9
18.45
72
81.35
Figure 3.1: Dimensions of TMCM-1181 and position of mounting holes
3.2 Board mounting considerations
The TMCM-1181 offers one metal plated mounting hole close to the power supply connector (marked
yellow in figure 3.1 above). This mounting hole is connected to board supply ground. Please keep this in
mind when mounting the board to the rear side of a motor. All other mounting holes are isolated.
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