25 Series Symmetrical Hub Sprockets
$12.00 – $14.25
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 perfe...Read More
Product Overview
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 |
Specifications
- Chain Series: 25
- Material: 7075 Aluminum
- Thickness: 0.500 in.
Documents
Returns
Returns are accepted within 30 days of purchase.
View our return policy here.
Recommendations
1 review
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No more spacers!
These sprockets are great. I used to get the older ones that only had a boss on one side. Those made it difficult as the flat side would need a spacer to prevent rubbing. These, with the double boss, make it easy to keep everything in place. Just wish the tooth counts were more round numbers (increments of 5 or made whole number ratios).
