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    25 Series Bearing Bore Plate Sprockets, Number Of Teeth: 56

    8 different offerings of our 25 Series Plate 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 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.

    MFR Part #: am-4785
    $23.00
    Availability: 6 in stock

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

    Part Number Tooth Count Bore Pitch Diameter (in.) Outside Diameter (in.)
    am-4781 32 1.125 in 2.551 2.691
    am-4782 38 1.125 in 3.027 3.169
    am-4783 44 1.125 in 3.504 3.647
    am-4784 50 1.125 in 3.981 4.125
    am-4785 56 1.125 in 4.459 4.603
    am-4786 62 1.125 in 4.936 5.081
    am-4787 68 1.125 in 5.413 5.559
    am-4788 74 1.125 in 5.891 6.036

     

    Specifications

    • Bolt Circle: 0.201 in. diameter on bolt circle of 1.875 in. diameter
    • Chain Series: 25
    • Inside Diameter: 1.125 in.
    • Material: 7075 Aluminum
    • Thickness: 0.118 in.

    Documents

    Layout Print(s)

    am-4781 32T 25 Chain 1125in Plate.pdf

    am-4782 38T 25 Chain 1125in Plate.pdf

    am-4783 44T 25 Chain 1125in Plate.pdf

    am-4784 50T 25 Chain 1125in Plate.pdf

    am-4785 56T 25 Chain 1125in Plate.pdf

    am-4786 62T 25 Chain 1125in Plate.pdf

    am-4787 68T 25 Chain 1125in Plate.pdf

    am-4788 74T 25 Chain 1125in Plate.pdf

    CAD File(s)

    am-4781 32T 25 Chain 1125in Plate.STEP

    am-4782 38T 25 Chain 1125in Plate.STEP

    am-4783 44T 25 Chain 1125in Plate.STEP

    am-4784 50T 25 Chain 1125in Plate.STEP

    am-4786 62T 25 Chain 1125in Plate.STEP

    am-4787 68T 25 Chain 1125in Plate.STEP

    am-4788 74 25 Chain 1125in Plate.STEP

    am-4785 56T 25 Chain 1125in Plate.STEP

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

    Part Number Tooth Count Bore Pitch Diameter (in.) Outside Diameter (in.)
    am-4781 32 1.125 in 2.551 2.691
    am-4782 38 1.125 in 3.027 3.169
    am-4783 44 1.125 in 3.504 3.647
    am-4784 50 1.125 in 3.981 4.125
    am-4785 56 1.125 in 4.459 4.603
    am-4786 62 1.125 in 4.936 5.081
    am-4787 68 1.125 in 5.413 5.559
    am-4788 74 1.125 in 5.891 6.036

     

    Specifications

    • Bolt Circle: 0.201 in. diameter on bolt circle of 1.875 in. diameter
    • Chain Series: 25
    • Inside Diameter: 1.125 in.
    • Material: 7075 Aluminum
    • Thickness: 0.118 in.

    Documents

    Layout Print(s)

    am-4781 32T 25 Chain 1125in Plate.pdf

    am-4782 38T 25 Chain 1125in Plate.pdf

    am-4783 44T 25 Chain 1125in Plate.pdf

    am-4784 50T 25 Chain 1125in Plate.pdf

    am-4785 56T 25 Chain 1125in Plate.pdf

    am-4786 62T 25 Chain 1125in Plate.pdf

    am-4787 68T 25 Chain 1125in Plate.pdf

    am-4788 74T 25 Chain 1125in Plate.pdf

    CAD File(s)

    am-4781 32T 25 Chain 1125in Plate.STEP

    am-4782 38T 25 Chain 1125in Plate.STEP

    am-4783 44T 25 Chain 1125in Plate.STEP

    am-4784 50T 25 Chain 1125in Plate.STEP

    am-4786 62T 25 Chain 1125in Plate.STEP

    am-4787 68T 25 Chain 1125in Plate.STEP

    am-4788 74 25 Chain 1125in Plate.STEP

    am-4785 56T 25 Chain 1125in Plate.STEP

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    #am-3462_green
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    Compliant wheels are not intended for moving robots, but moving objects. Compliant wheels give way to allow rigid objects to be manipulated easily. A line of multiple wheels on a driven hex shaft creates a very effective roller that ignores variations in the objects being driven. This makes for high-performance intakes and internal conveyors. The wheels are sized for an interference fit and tend to stay in place on a shaft, though a shaft collar may be used to make absolutely sure the wheels stay clear of other mechanisms or maintain consistent spacing.

     

    The hex bore versions of this wheel are undersized, and are intended to be an interference fit on their respective hex shafts. This interference fit allows for effective torque transfer from the hex shaft to the wheel, as well as allowing the wheel to remain in place along the shaft without the need for spacers or collar clamps:

     

    Compliant Wheel Sizing

     

    Different durometer ratings give each wheel unique characteristics. Green wheels (35A durometer) are the softest and most compliant around objects, while orange (40A), maroon (45A), and blue (50A) wheels are increasingly firm. The increased firmness also allows the latter wheels to carry a higher RPM rating. Check out the downloads tab for a chart showing wheels and their maximum RPM. 

     

     

    Specifications

     

    • Bore: 1/2 in. Hex, 3/8 in. Hex, Nub Bore
    • Diameter: 2 in.
    • Durometer: 35A (Green), ⠀40A (Orange), ⠀45A (Maroon), ⠀50A (Blue), 60A (Black)
    • Hole Pattern: Qty 2 3.5 mm Holes on a 16 mm Circle for 8 mm bore wheels
    • Material: TPU
    • Maximum RPM: 6000 - 9000
    • Weight: 0.035 lb.
    • Width: 0.5 in.

     

    Documents

    Layout Print(s)

    am-3571 2IN 375 Hex Compliant Wheel REV3.PDF

    am-3462 2IN 500Hex Compliant Wheel REV3.PDF

    am-3572 2IN 8mm Compliant Wheel REV4.PDF

    CAD File(s)

    am-3571 2IN 375Hex Compliant Wheel REV2.STEP

    am-3572 2IN 8mm Compliant Wheel REV2.STEP

    am-3462 2IN Molded 500Hex Compliant Wheel REV2.STEP

    Additional File(s)

    2 inch Compliant Wheel Expansion.pdf

    Don't see what you need?

    Split Collar Clamp 1/2 in. Hex HD

    #am-1526
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    ( 178 In stock)

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    Bearing, 1/2 inch Hex Bore, Flanged, (FR8ZZ-HexHD)

    #am-2986
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    ( 49 In stock)

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    This bearing is guaranteed to have a stronger, thicker race. 100% of these bearings have been quality checked for a smooth fit over 1/2" hex stock here at AndyMark. Many of our long-time customers will recognize this bearing, as it is the same version we sold back in 2008-2011, and we did not have any failures. Now, it is renamed and quality checked for your high load needs - including drive chassis with cantilevered wheels.


    Specifications:

    • Inside diameter: 0.500-0.502 inch hex bore
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    • Flange thickness: 0.062 inch
    • Overall thickness: 0.312 inch
    • Weight: 0.05 pound

    1/2 in. Hex Collar Clamps, Silver Thin (0.25in) - 1 part

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    $24.00
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    8 different offerings of our 25 Series Plate 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 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.

    West Coast Drive Style Bearing Block Kit

    #am-4576
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    A West Coast style drivetrain can be finicky to create without precision machining capabilities. This Bearing Block Kit makes it much more accessible for teams to create high performance West Coast Drive style platforms with limited fabrication resources. Simply drill a clearance hole for a shaft to pass through your drive rail, pull your chain or belt tight, and clamp it down with the included hardware. Featuring machined pockets to capture 10-32 Nylock Nuts, these blocks can be used and reused without worrying about damaging threads upon installation. Because each block is the same part, you can keep the screw heads pointing to the outside of your robot for easy maintenance. 

     

    This unassembled kit ships with enough hardware to provide significant clamping pressure to help keep your powertrain components tensioned properly, and can withstand upwards of 1500lbs of force along the axis of the tube when properly installed. This means that for most FRC use cases, a team can install these without the need for tensioning devices to keep things aligned.

     

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    Wheel Example

     

    The AndyMark West Coast Drive Bearing Block Kit also includes mounting geometry for components that utilize 2" and 1.875" bolt circles, such as motors, gearboxes, sprockets, hubs and gears. This makes this product great for many uses outside of your drivetrain, such as a robust interface to make a rotary arm, or an easy-to-use mounting interface for motors to power your mechanisms. The bearing plate is also 2" wide, making it perfect to keep two 20DP gears (of which the total teeth add up to 80,) meshed together.

     

    Sprocket Example Gearbox and Gears Example

    Items Included

    • 2 - WCD Bearing Block (am-4560)
    • 4 - 10-32 Nylock Nut (am-1042)
    • 4 - 10-32 x 1.5in Socket Head Cap Screw (am-1014)

    Specifications

    • Block Height: 0.45 in.
    • Block Length: 2.88 in.
    • Block Material: Aluminum
    • Block Width: 2.00 in.
    • Weight: 0.33 lbs

     

    Documents

    Layout Print(s)

    am-4576 WCD Bearing Block Kit.pdf

    am-4560 WCD 1.125 Bearing Block REV 2.pdf

    CAD File(s)

    am-4576 WCD Bearing Block Kit.STEP

    am-4560 2x1 WCD 1.125 Bearing Block REV2.STEP