The R-80 is a powerful rotational stepper motor. The step size is 10° and maximum torque is approx. 3.7 Nm (see video). The dimensions are 80 x 80 x 37 mm³. The cylinder cross-sectional area is 30 x 20 mm², so you need rectangular seals of approx. 30.3 x 20.2 mm² in size which is included. If you need different dimensions then you can generate custom seal cutters here.
The axle is the only part which requires support. The pictured motor has transparent top/bottom covers lasercut from acrylic. Let me know if you would like 2D vector files for these. Of course these can also be printed.
The design is involved in development of MR safe robotics for breast cancer diagnosis, so the full model is not directly downloadable. Design files are available on request. Please provide proof of commitment such as a picture (make) of one of my other models, or a donation of arbitrary size. It is also available on MyMiniFactory if you put your two cents in.
For assembly instructions check my other pneumatic designs such as the R-64 or the video of the R-81.