Sources For Mechanical Parts

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Contents

Local

  • Action Bearing Bearing store in Allston that is possibly cheaper than McMaster.
  • Boston Gear - Huge catalog of power transmission products. Has several suburban distributors.

Mail Order

  • RushGears Custom-manufactured gears.
  • Stock Drive Products/Sterling Instrument an enormous assortment of gears, belts, pulleys, bearings, shafts, etc, with a well-done website enabling lots of search.
  • SmallParts has a large assortment of tiny things, at semi-enormous prices. They used to have a paperback-book sized catalog, but now only have a semi-annoying online one.
  • Robot Marketplace Robot-targeted selection of belts and drives.

Real Mechanical Parts

  • McMaster-Carr You can buy just about every mechanical part you could hope to use on McMaster-Carr, including materials of all shapes and sizes, power transmission parts, machining bits and pieces, and more. If it's involved in the operation of factory automation in any way, or the construction of factory automation, McMaster sells it. Packages shipped ground to the Asylum by 6pm typically show up by 10 the next morning.
  • Stock Drive Products/Sterling Instruments This is like McMaster-Carr except more focused on power transmission components. Gears, pulleys, belts, shafts, bearings, etc. - all well-cataloged and relatively cheap. Note that they have a "Metric" catalog and an "English" catalog, and the components are different.
  • W. M. Berg An alternate to Stock Drive Products, if they're out of stock or don't have the one type of component you're looking for. They tend to be a little more expensive and a little harder to navigate.
  • Motion Industries With warehouses all over (one of which is a 20 minute drive from Tyler St), these guys are a McMaster-Carr equivalent and can supply the same kinds of parts and raw materials - except they also have a storefront.

Hobby Mechanical Parts

  • Tower Hobbies (http://www.towerhobbies.com/): All the hardware you could possibly want for remote-control model-sized hobby projects. Tiny spherical bearings, carbon fiber rod, random bits of fabric that are hard to find, propellers, you name it. Anything you need to build something the size and weight of a high powered remote control car. (Also a good source for hobby RC servomotors, for the record)
  • Hobby Lobby (http://www.hobby-lobby.com/): Like Tower Hobbies, but poorer documentation. Hobby Lobby tends to have cool assemblies (like propeller assemblies mated to motors) that Tower Hobbies doesn't - Tower Hobbies usually has parts that you can click together to make stuff, but they don't sell you finished assemblies.
  • Small Parts (http://www.smallparts.com/): These guys straddle the line between hobbyist and real parts, but I put them on the hobbyist side because of their selection. Their name is their specialty: small parts you can't find anywhere else. I haven't found another source for surgical-needle size hollow tubes, for instance.
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