Gears
  • Super Economy Gears Set, Black **

    Super Economy Gears Set, Black **

    A set of four different-sized gears (ranging from 12-, 20-, 30-, and 40-teeth) with holes to attach to each other with screws. Small gear fits toy motor shafts. New durable plastic material. Set of 4. Works with other gears marked **.

    $0.95
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  • Super Economy Gears Set, GREEN **

    Super Economy Gears Set, GREEN **

    A set of [4] different-sized gears (ranging from 12-, 20-, 30-, and 40-teeth) with holes to attach to each other with screws. The large gear measures 1-5/8 in. diameter. The small gear fits 2mm motor shafts. Other gears fit 3mm shaft. Durable plastic...

    $1.45
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  • Advanced Gear Set

    Advanced Gear Set

    Use the Gears to Count Movement with Sensors! Evenly spaced holes near the edge, which can be used with a slotted optocoupler to measure velocity, acceleration or distance of the gear or vehicle. Holes can also be used to attach the gear to a wheel,...

    $2.45
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  • Slotted Opticoupler

    Slotted Opticoupler

    For use with the Advanced Gear Set (#391128). Can be used with your circuit to measure the gear rotation speed. 5V DC.

    $3.95
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  • Deluxe Gear Set **

    Deluxe Gear Set **

    Deluxe assortment of gears for power transmission. Small gear and worm gears fit a toy motor.  The Deluxe Gear Set Includes: [4] 10-Tooth Gears [4] 20-Tooth Gears [4] 30-Tooth Gears [4] 40-Tooth Gears [4] 50-Tooth Gears [2] 1/4 in. dia. Rack and...

    $36.95
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  • KELVIN® Inertia Welder

    KELVIN® Inertia Welder

    Make your own gear combination for all your design needs. Includes a special KELVIN® jig, class pack of gears to start welding and a PowerPoint presentation that explains how it works. Requires drill stand or drill...

    $145.00
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  • KELVIN® Gear Jig

    KELVIN® Gear Jig

    KELVIN®'s revolutionary jig design allows you to design different combinations of gears on each side. On one side, the combination is 4-, 8- or 16-teeth gears. On the other side, the combination is 6-, 12- or 24-teeth gears. This jig is ideal for...

    $9.95
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  • KELVIN® Worm Gear Pack of 10

    KELVIN® Worm Gear Pack of 10

    This versatile worm gear can be used for a variety of projects. It features two hole sizes. One side fits a 2mm motor shaft. The other side fits a 1/8 in. axle. Black. Does not include motor and gear assembly shown.  Bulk pack of 10. Works with...

    $9.95
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