MuscleChuck Camless Quick Change 1/2-Inch Chuck for Porter Cable 630, 690, 691, 693, 890, 7518, 7519, 7536, 7537, 7538, 7539 ONLY

I bought this chuck for use on a Camaster CNC router that uses a Porter Cable 892 router. I have only used it for a few weeks but so far, it has met my expectations. Some advertising I have seen (not from MuscleChuck) says this part number will not work with the 892 router but that has not been my experience. The instructions explain how to balance the chuck but I just installed and tested it and I am not getting any unexpected vibration or reduced cut quality compared to the PC collets. The sound at high speed is different but that is to be expected because the shape is different. I mostly use it with a 1/2" to 1/4" shank adapter and it has worked out fine. I frequently use it with 1/16" 2 flute and "O" flute straight bits for fine details and I have not yet broken one nor have I experienced any run-out problems. The whole idea of this device is to make bit changes quicker and easier. That is very important when you are cutting a project that requires 3 or 4 bit changes. This chuck makes bit changes much easier. If i experience any problems I will edit this review accordingly but so far, it is 5 stars and highly recommended.

I installed this on my Porter Cable 690, which usually runs a D handle base. Before, bit changes required flopping the router on its side and being careful to hold the bottom wrench just right, as you cranked the top wrench in the opposite direction. Often, the bottom wrench slipped toward the motor, slipping off the nut.I was thinking of modifying one of my wrenches by welding something to it to hold it off the motor and in place on the collet nut. With the MuscleChuck, bit changes are now just just a quick twist of an Allen wrench away.Running the MuscleChuck, I notice no vibration. Had I experienced any, directions are included to correct it.Just for reference, I bought a set of T handles from a "freight" store for about the price many are charging just for one T handle wrench.

I run a Techno CNC with Porter Cable router and needed a fast change chuck after banging my knuckles with two wrench process. The mechanics of the MuscleChuck are superb. No Vibrations. It should be pointed out that MucscleChuck requires very tight tolerance shanks on the tool bit....497 inch to around .505" for my 1/2" tooling...., so if there are any dings on the toolbit shaft that cause a high spot they will need to be filed down to fit into MuscleChuck. Cheap adapter bushings form MLCS don't work also....I updated these to Whiteside adapter bushings and all is now well. The internal diameter precision of MuscleChuck is so keen that bits make a sucking pop when extracted. Amazing!

This works well, and grabs the bits securely. It needs to be lifted up to a point where you can get the hex wrench into it, so I find that once I lift the router with my router lift, it is just as easy to use the regular wrenches to change the bits. I think it would all depend on the accessibility of the chuck on your own setup.

I originally bought this item to simplify changing bits in my router table. It has worked flawlessly for the past 18 months. Also, the customer service is excellent. Recently, I had a question and was able to speak directly with the owner who was obviously very knowledgeable but also very helpful.

I have four muscle chuck quick change router collects....I guess that means i am very satisfied...Yes

Wish I could find one for all my routers

Didn't last long, it was nice when it worked!