AI for bearing and power transmission distributors, tested on work your counter and repair shop already finished.

Every closed job already has its answer. The list a millwright emailed sits beside the quote your counter built from it, and the teardown report sits beside the repair quote that went to the plant. A draft can be graded against what your people actually decided, so the test needs nothing new from anyone on your team.

Belts and chain are counted differently, sometimes on one work order. A classical belt's number is its inside length, so an A68 is 68 inches inside and about 70 around the outside. A narrow belt's number is its outside circumference times ten, so a 5V1060 is 106.0 inches around. On ANSI roller chain the left digits give the pitch in eighths of an inch and the last digit says standard, lightweight or rollerless, so a No. 40 is half-inch pitch. An ISO 606 08B has the same half-inch pitch and a larger roller, about 8.51 millimeters against 7.95, so matching pitch settles nothing by itself.

Motors and couplings come down to the shaft. Divide the first two digits of a three-digit NEMA frame by four and you have the shaft height in inches. The letter after it matters as much. U frames date from 1952 and T frames from 1964, and one motor maker's primer gives an original 254 frame a 1-1/8-inch shaft, a 254U 1-3/8 and a 254T 1-5/8. A coupling line then has to name a bore and keyway for that shaft, and ANSI/AGMA 9002 covers those inch dimensions for unmounted flexible couplings.

Buyers write bearing life into their own standards. The University of Pennsylvania's fan standard designs shafts and bearings for an L-10 life of 200,000 hours. Columbia University's section on fume hood exhaust fans asks for an L50 life of 200,000 hours on the motor bearing. One fan maker's bearing guide gets L-50 by multiplying L-10 by five, so two lines that both read 200,000 are five times apart. Copying only the number misses that, which is why this work needs someone who knows the account.

Genuine comes before equal. The World Bearing Association, founded in 2006 by the bearing makers' associations of the United States, Europe and Japan, runs a public campaign against counterfeit bearings. Its advice is to buy from trusted sources and, if a part looks wrong, to go to the brand's maker rather than try to identify it yourself. So a draft proposes only parts from the item file and lists you send, and names the source on each line.

One limit covers both jobs. The proof of concept works on copies. It never touches your ERP, your inventory system or a live quote, and it never decides that one part may replace another or that a gearbox is safe to return to service. A qualified person on your team checks every interchange and every repair recommendation before anything reaches a plant.