A Scotch key or Dutch key features a circular keyway hole (instead of rectangular), produced by drilling axially into the assembled hub and shaft, with a metal dowel pin serving as the key

Put very simply, a scotch key is drilled axially into a shaft to fit a key into. Essentially, a scotch key is a very easy keyway to make, in that it just needs to be drilled into the shaft, lengthwise, with the rotating element matched to the placement of the keyway, and a key, just as a bolt, placed through the rotating piece, into the keyway ...

2008年6月8日 · Scotch key Yep. AKA "scotch key" and has been around - and very effective almost for-ever. Some were/are drilled/reamed and others ("Scotch") were just drilled and tapped. "Roll-pins" work pretty well too. The nut or washer on the thread will hold the key in against any tendency to "walk" or "work" out.

What are the advantages and disadvantages of using circular section ("Scotch") keys, keyseats and keyways? I am not referring to Woodruff style, I am only interested in the type where the key itself if a full cylindrical piece and the shear force is diametric.

2018年1月16日 · Your 'Dutch Key', we call them screw keys but they are prevalent in many types of machinery. They appear on light to medium load shafts and especially handwheels. Why handwheels? Because there usually is a panel behind, with shafts supported farther inboard.

2021年9月18日 · The first one that comes to mind is a round/scotch key. The pin holes could be drilled with live tooling and a rollpin would ease tolerance requirements. Another options would be a pin pressed radially into the side of the outer member, with a slot cut in the shaft.

2018年1月17日 · A "Scotch key" or "Dutch key" also provides a keyway not by milling but by drilling axially into the part and the shaft, so that a round key can be used. If the key is tapered, it is referred to as a "Dutch pin" and is driven in, and generally cut off flush with the end of the shaft.

2006年2月15日 · Down here, I’ve heard that coupling referred too us a “Scotch” key. Not sure if that’s right or wrong, as the same term is used when the interfering hole is drilled and tapped to include a set screw. Kind of like the effect in a taper-lock …

2008年2月6日 · Not Scotch Pin, but Scotch Key. It's occupies the same position as a square or rectangular key, except it's round. http://en.wikipedia.org/wiki/Scotch gives this explanation: "Scotch key, pins inserted into holes drilled axially to fix an item such as a gear onto a shaft "http://en.wikipedia.org/wiki/Keyway_(engineering)

Key Capacity. Notes: Tables of the various factors and design strengths are found on webpage. Factors. To determine the torque capacity of key..