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    Sprocket, S25-17D-500H

    Product Overview

    The Magic Sprocket. 

    This sprocket allows the use of two runs of #25 series chain inside 2x1 box tubing for a perfect fit, prohibiting the chain from skipping off. Build your own chain-in-tube drive with your favorite wheels and the help of this magic sprocket.

    This product was originally pioneered by Anthony Lapp from 221 Robotic Systems.  Additionally, special thanks to Ty Tremblay and Team 319 for their insight and design advice on this product. This product builds upon this popular idea by adding chamfers to the teeth of the sprocket, as well as bosses on the faces to prevent the sprocket from rubbing the outer races of adjacent bearings.

    Specifications

    • Bore: 0.50 in. Hex
    • Boss Diameter: 0.75 in.
    • Material: 7075-T6 Aluminum
    • Number of Teeth: 17
    • Outside Diameter: 1.492 in.
    • Overall Thickness: 0.49 in.
    • Pitch Diameter: 1.361 in.
    • Series: 25
    • Sprocket Thickness: 0.1 in.

    Documents

    CAD File(s)
    am-3999 17T 25 Chain Double Sprocket For WCD.STEP


    Layout Print(s)
    am-3999 17T 25 Chain Double Sprocket For WCD.PDF

    MFR Part #: am-3999
    $21.53
    Availability: Out of Stock - on backorder and will be dispatched once in stock.
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    These aluminum sprockets work perfectly with any of our 6 hole hubs and mesh with #25 roller chain.  They also work with other build systems that use a 2 in. bolt circle for mounting. The larger versions also have a mounting pattern compatible with 2x1 box tube usefull for making arms.