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    25 Series Symmetrical Hub Sprockets 500Hex, 18 Tooth

    9 different offerings of our 25 Series Hub Sprockets. These are perfect for meshing with roller chain and finally getting that-thing-that-you-need-to-spin moving!

     

    These aluminum sprockets work perfectly with 1/2 in. hex shaft and mesh with #25 roller chain. They are symmetrical and have the same sized hub on both sides so there's no wrong way to install them. The hub is also sized to ride on only the inner race of a bearing for smooth motion without binding or rubbing.



    Note: Despite the prints, at this time, tooth alignment to the bore is not controlled on these sprockets.

     

    Part NumberTooth CountBorePitch Diameter (in.)Outside Diameter (in.)
    am-4772108mm key0.8100.928
    am-4773141/2 in. Hex1.1231.251
    am-4774143/8 in. Hex1.1231.251
    am-4775181/2 in. Hex1.4401.572
    am-4776183/8 in. Hex1.4401.572
    am-4777221/2 in. Hex1.7571.893
    am-4778223/8 in. Hex1.7571.893
    am-4779261/2 in. Hex2.0742.212
    am-4780263/8 in. Hex2.0742.212

     

    Specifications

     

    • Chain Series: 25
    • Material: 7075 Aluminum
    • Thickness: 0.500 in.
    # Pièce: am-4775
    $18,00
    10 en stock
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    Andymark Hubs 1/2 in. Hex

    #am-4124
    $12,00
    (En stock)

    Each hub now has a "flower" pattern that fits and keys into our 42T 5 mm HTD Pulley, which means you are no longer constrained to our legacy 500EX Hex Hub for compatibility with this pulley. Every hub still maintains a closed-profile hole for maximum strength. Every shaft hub has been designed with bearing bosses on both sides that have been sized appropriately for the mating bearings that would pair with the bore through the hub, which means you can run each hub right against a bearing with no need for extra spacers. All of these hubs are also made from 7075-T6 aluminum, which is much stronger than the previously used 6061-T6, 6005, and 6105 alloys from our older designs. Where possible, the shoulder on shaft hubs was reduced to 7/8" in diameter for an easier fit with our molded plastic wheels, while still maintaining a precise 1.125" diameter boss for locating in wheels, sprockets, gears, and more. 

     

    The holes are evenly spaced on a 1.875 in. circle and 0.201 inches in diameter. That's a perfect size for #10 bolts!

     

    Learn how to attach these hubs to AndyMark wheels by watching this video!

    #25 Connecting Link for Roller Chain

    #am-0371
    $1,54 $1,74
    ( 90 En stock)

    #25 Connecting Link (Master Link) 

    Specifications:

    • Material: Steel
    • Style: Roller Chain - Spring Clip
    • Type: Connecting Link
    • Size: #25
    • Pitch: 0.250 inch
    • Weight: 0.01 lbs

    4" Stealth Wheel, 1/2 Hex Bore, Orange,40A Durometer (am-2647_orange)

    #am-2647_orange
    $12,00 $14,11
    ( 70 En stock)

    The inside black portion of this wheel is made from molded polycarbonate plastic. The outer tread is TPU (Thermoplastic PolyUrethane). This robust but lightweight wheel provides good traction on carpet and soft tiles. Stealth wheels are the perfect drive wheel for smaller (<50 lb.) robots, or for intakes and other auxiliary robot mechanisms. These wheels are available in a variety of bores and durometers. 4 in. Stealth Wheels feature a 6 bolt pattern on a 1.875 in. bolt circle for mounting sprockets, hubs, and gears. Nub Bore Stealth Wheels feature a 4 bolt pattern on a 16 mm bolt circle found in most FIRST Tech Challenge building systems. The lower the durometer the softer the wheel is, this makes it wear away faster, but also makes it more grippy.

    Product Usage:
    Many thread locking materials are not compatible with polycarbonate and can eat away at the plastic. Be sure to check which adhesives are okay to use with this product.

    Specifications

    • Bore: 1/2 in. Hex, 3/8 in. Hex, Nub Bore, 5 mm Hex
    • Diameter: 2 in., 4 in.
    • Durometer: 35A (Green), ⠀40A (Orange), ⠀50A (Blue), ⠀60A (Black), ⠀80A (Gray)
    • Hole Pattern: Qty 4 3.5 mm Holes on a 16 mm Circle for 8 mm bore wheels
    • Material: TPU, Polycarbonate
    • Weight: 0.23lb, 0.1lb
    • Width: 1 in.

    Documents

    Layout Print(s)

    am-3664 2in 5mm Hex Stealth Wheel REV4.PDF

    am-3156 2IN 8mm Stealth Wheel REV3.PDF

    am-3436 2in 375Hex Stealth Wheel REV3.PDF

    am-3155 2in 500Hex Stealth Wheel REV3.PDF

    am-3665 4in 5mm Hex Stealth Wheel REV3.PDF

    am-2648 4IN 8mm Stealth Wheel REV5.PDF

    am-3435 4in 375Hex Stealth Wheel REV3.PDF

    am-2647 4in 500Hex Stealth Wheel REV3.PDF

    CAD File(s)

    am-3664 2in 5mm Hex Bore Stealth Wheel REV3.STEP

    am-3156 2IN 8mm Stealth Wheel.STEP

    am-3436 2IN 375Hex Stealth Wheel REV2.STEP

    am-3155 2IN 500Hex Stealth Wheel REV2.STEP

    am-3665 4IN 5mm Hex Stealth Wheel REV2.STEP

    am-2647 4inWheel 500 Hex REV2.STEP

    am-3435 4in Wheel Integrated Hub 375 HEX with Tread REV2.STEP

    am-2648 4inWheel 8mm Hub REV2.STEP

    25 Series Symmetrical Hub Sprockets 500Hex, 14 Tooth

    #am-4773
    $17,00
    ( 10 En stock)

    The 25 Series Plate Sprockets: They roll! They turn! They spin! Everything you could possibly want from a plate sprocket.

     

    These Aluminum sprockets work perfectly with hex shaft and mesh with #25 roller chain.

    Blue Bumper Material, 161in x 19.5in

    #am-2676
    $33,00
    (En stock)

    BLUE Cordura nylon bumper material. Each piece is 161 x 19.5 inches, enough to cover the entire perimeter of your FRC robot. The material is heavy-duty nylon cloth, much like the material used on backpacks.

    Additional Information:
     

    We also have stick-on numbers available (not included with material).

     

    Specifications

    • Color: Blue
    • Denier: 1000
    • Length: 161 in.
    • Material: Nylon
    • Width: 19.5 in.

    Red Bumper Material, 161in x 19.5in

    #am-2675
    $33,00
    (En stock)

    RED Cordura nylon bumper fabric material. Each piece is 161 x 19.5 inches, enough to cover the entire perimeter of your FRC robot. The material is heavy-duty nylon cloth, much like the material used on backpacks.

     

    Additional Information:
     

    We also have stick-on numbers available (not included with the material).

     

    Specifications

    • Color: Red
    • Denier: 1000
    • Length: 161 in.
    • Material: Nylon
    • Width: 19.5 in.