A nice pulley just ready to be combined into the block and tackle you
need for tiny jobs, like trimming your bonsai trees or hauling your
model boat out of the pond. Get this block with (1) sheave and rig up
whatever you need. Each block has an aluminum frame about 3–1/2” long
with “S” hooks on each end. The sheaves, or wheels are about 2” dia x
1/4” wide, with a “V” groove that looks perfect to handle 1/8” or
smaller Venetian blind cord. These dudes are perfect for demonstrating
mechanical advantage in the physics lab!! But not for heavy lifting.
This black plastic gear is 3-1/16" dia with (96) teeth at 32 pitch, 20-degree pressure angle. Center has a 9/16" ID bore with a 3/4" dia x 1/8" bushing on both sides. One side also has (3) 3/32" ID x 1/8" standoffs along with a 3/16" tooth along one edge. Source and function are unknown but you'll think of something.
These translucent silicone O-rings are 1/8" thick and measure 3-1/2" dia. Nice belts for science-project motors and even nicer for your slingshot needs. Crafters will see jewelry material that the metal-detectors won't care about.
These translucent silicone O-rings are 3/32" thick and measure 4" dia. Nice belts for science-project motors and even nicer for our slingshot needs. Crafters will see jewelry material that the metal-detectors won't care about.
You pick from our nylon gear collection. The 30-tooth gear is 1" dia, 32 pitch, with a 20-degree pressure angle. Measures 3/32" thick on the face with a 3/32" bore on that side and an 11/32" dia x 3/8" long 9-tooth shaft with the same pitch/pressure. The 32-tooth gear is 1-1/16" dia, 32 pitch and 20-degree pressure angle (so it'll mesh with the 30-tooth). Measures 3/32" thick on its face with a 1/4" bore and a 15/32" dia x 17/32" long 13-tooth shaft with the same pitch/pressure.
Little black plastic gear, 1-1/32" dia x 3/32" thick with (34) teeth, 32-pitch with a 14-1/2 degree pressure angle and a 3/8" long, 11/32" 9-tooth shaft, same pitch, with the teeth on the outer half. Has (3) equidistant 3/16" bores in the face, and a 5/32" bore on the shaft side, 3/32" on the face side.
This gray plastic gear is 1-13/16" dia x 3/32" with (56) teeth, 32-pitch, and a 14-1/2° pressure angle with a 3/8" long x 19/32" OD x 3/8" ID bore ready for a keyed shaft. Has (2) 1/4" bores on the face.
Our each is (10) feet of #420 roller chain with a 1/2" pitch at 1/4" wide. Pre-stretched and heat-treated, and includes a master link. Rated for a 3600-lb load. This size is used with a lot of minibike and go-kart drives.
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Our web site always contains everything we have available for sale outside our retail stores. Typically, new items are listed on the site before they get published in our catalog...
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In addition to this fabulous on-line catalog of incredible stuff, American Science & Surplus has three great retail locations. If you're in the neighborhood, please stop by! Store hours may vary. Feel free to call for store hours and directions.