I am considering a potential two way hydraulic system for a subsea environment. I should be able to take advantage of the high ambient pressure to drive in either direction, though my flexible hydraulic line must be able to handle external pressure for this to work. I am not experienced...
Can someone tell me what differences you can expect between expensive bearings (SKF) and cheap bearings (VXB)? I would imagine running life, but is that generally load or speed, or some combination that is causing this? Are there some types of bearings you wouldn't skimp on, while others it's...
I have a tool that will be engaging with a motor. The spline to transfer torque between the two is 1/2" diameter, and only needs to carry 18 Nm, so I'm not overly stressing it. It might not engage perfectly straight and it might not align perfectly well.
My plan is to use a hex spline with...
Hello - I am designing some equipment that will go on an ROV. I am interested in the best materials selection guide for it. I know of the EEMUA 194, but I wanted to make sure it is useful for ROV equipment before I buy it.
I assume that periodically submerged equipment like ROVs have less...
I am designing a linear actuator. I would like a dynamic seal between the piston and the bore (IP66), but the piston will have some torque on it as it slides, so a cylindrical design won't necessarily stop it from rotating. Putting a flat on the piston would stop it from rotating, but I'm not...
Hello - I am designing a shaft coupling that needs to be able to handle 2200 Nm under normal operating conditions, but I would like it to break at around 3500 Nm. This device will have a long life, but it will only be operated up to 1000 cycles total so I'm not expecting fatigue to play a big...
Hello - I am designing a linear actuator using a relatively large (60mm) roller screw. I am driving the screw and the output is attached to the nut. Obviously I need to oppose the torque that the screw imparts to the nut so that I get the desired linear motion/force. I don't have a lot of...
