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25 Series Symmetrical Hub Sprockets

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25 Series Symmetrical Hub Sprockets

These Hub Sprockets work with a 1/2 hex shaft and a #25 roller chain.
  • Description

  • 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 Number Tooth Count Bore Pitch Diameter (in.) Outside Diameter (in.)
    am-4772 10 8mm key 0.810 0.928
    am-4773 14 1/2 in. Hex 1.123 1.251
    am-4774 14 3/8 in. Hex 1.123 1.251
    am-4775 18 1/2 in. Hex 1.440 1.572
    am-4776 18 3/8 in. Hex 1.440 1.572
    am-4777 22 1/2 in. Hex 1.757 1.893
    am-4778 22 3/8 in. Hex 1.757 1.893
    am-4779 26 1/2 in. Hex 2.074 2.212
    am-4780 26 3/8 in. Hex 2.074 2.212
    • Chain Series: 25
    • Material: 7075 Aluminum
    • Thickness: 0.500 in.
Select Bore
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From $4.14

Original: $13.80

-70%
25 Series Symmetrical Hub Sprockets—

$13.80

$4.14

Product Information

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Description

These Hub Sprockets work with a 1/2 hex shaft and a #25 roller chain.
  • Description

  • 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 Number Tooth Count Bore Pitch Diameter (in.) Outside Diameter (in.)
    am-4772 10 8mm key 0.810 0.928
    am-4773 14 1/2 in. Hex 1.123 1.251
    am-4774 14 3/8 in. Hex 1.123 1.251
    am-4775 18 1/2 in. Hex 1.440 1.572
    am-4776 18 3/8 in. Hex 1.440 1.572
    am-4777 22 1/2 in. Hex 1.757 1.893
    am-4778 22 3/8 in. Hex 1.757 1.893
    am-4779 26 1/2 in. Hex 2.074 2.212
    am-4780 26 3/8 in. Hex 2.074 2.212
    • Chain Series: 25
    • Material: 7075 Aluminum
    • Thickness: 0.500 in.