Newer Delta Serial Number Plate This aluminum serial number plate is from a 1947 Unisaw, and is attached with screws. 1947 Delta Unisaw Serial Number Plate Some machines, for whatever reason, may have had their serial number plates removed or torn off, making a positive vintage identification more difficult. Restoring a 1975 Rockwell 34-461 Unisaw. The great Unisaw restoration videos by Delta/Popular Woodworking/Steve Shanesy forget to mention the threaded lock collar (far left end) when putting the arbor assembly back together. Its an important part to remove and reinstall. Also, the 'keyway washer' is also called a 'belvedere washer'.

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Have an old Rockwell table saw model 34-466 with a Rockwell 83-621 motor. Was working fine. Then when I turned it on, the blade rotated about 1/2 revolution very slowly and stopped. When I turn the saw off, I can see the switch move to the off position.

When I turn it on, I can see the switch move on and hear it click. The motor doesn't run or the blade turn and I am getting a faint humming sound when in the on position. I can turn the blade manually just fine, so it hasn't frozen. Any ideas on what might be the problem?

Thanks to all for your help. Hello thomas999,Right off the bat I thought of three situations that it might be, and they all have to with the motor. It may be a start capacitor problem, an internal centrifugal switch problem or a start winding issue. You may want to take your motor to a qualified electric motor repair shop in your area and have them take a look at it. If it's past the point of no repair you may want to consider upgrading to a 3hp 1ph motor.

The initial investment is costly, but you will notice a big difference between the two. One other thought, check the contacts on your switch making sure they are not scored or burnt.Good luck,-WJA.

Serial Numbers Office

Delta introduced the world’s first tilting-arbor cabinet saw in 1939 with its fully-enclosed steel cabinet and polished cast iron top. Leading the industry for decades, the 1960s and 1970s brought the Powermatic Model 66 table saw into a neck-and-neck position with the Unisaw, boasting the heaviest trunnion assembly (table saw guts) and virtually vibration-free operation. Nowadays, the Unisaw and Powermatic models are still market leaders but most tool hounds would agree that each brand’s no-nonsense, 600-pound-plus models from a lifetime ago are often preferred over today’s state-0f-the-art models.We have both in the shop! A vintage Delta Unisaw and a 1990s Powermatic Model 66. The two rival beasts coexist side by side creating one long cast iron work surface and infinite creative possibilities. We researched our Unisaw’s serial number and learned that it was made in September of 1941, three months before the bombing of Pearl Harbor! Pretty amazing. Pinstriped prison ebook. The woodworker I bought it from said I was now just the fourth owner of this 75-year-old industry icon. I couldn’t be more proud.