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Product Specifications:
| Item | Miter Gears |
| Bore Dia. | 0.625" to 0.6885" |
| Diametral Pitch | 12 |
| Direction Of Rotation | Right Angle |
| Face Width | 0.39" |
| Gear Ratio | 1:1 |
| Hub Dia. | 1 3/8" |
| Hub Projection | 0.688" |
| Hub Type | No Screws |
| Length | 1 3/16" |
| Material | Carbon Steel |
| No. Of Teeth | 21 |
| Pitch Dia. | 1 3/4" |
| Pressure Angle | 20° |
| Product Datasheet | martin-sprocket-hm1025.pdf |
| Series | HM Series |
| Type | Plain Reborable |
Shipping Info:
| Ship weight (kg) | 0.19 |
| Ship height (cm) | 3.02 |
| Ship length (cm) | 4.75 |
| Ship width (cm) | 4.75 |
| Country of Origin | US |
Documentation:
Product Variants
| Product | Model | Pitch Dia. | Material | No. Of Teeth | Face Width | Hub Dia. | Bore Dia. | Hub Projection | Pressure Angle | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
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HM1215 | 1 1/4" | Carbon Steel | 15 | 0.27" | 1" | 0.375" to 0.501" | 1/2" | 20° | €112.91 | |
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HM1215B | 1 1/4" | Steel | 15 | 0.27" | 1" | 0.5" to 0.501" | 1/2" | 20° | €112.91 | |
![]() |
HM1218 | 1 1/2" | Carbon Steel | 18 | 8/25" | 1 1/4" | 0.5" to 0.626" | 5/8" | 20° | €120.02 | |
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HM1218A | 1 1/2" | Steel | 18 | 8/25" | 1 1/4" | 0.625" to 0.626" | 5/8" | 20° | €120.02 | |
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HM1218B | 1 1/2" | Steel | 18 | 8/25" | 1 1/4" | 0.75" to 0.626" | 5/8" | 20° | €120.02 | |
![]() |
HM1221 | 1 3/4" | Carbon Steel | 21 | 0.39" | 1 3/8" | 0.5" to 0.6885" | 0.688" | 20° | €124.59 | |
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HM1224 | 2" | Carbon Steel | 24 | 0.43" | 1 1/2" | 0.5" to 0.8135" | 0.688" | 20° | €148.90 |
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MARTIN SPROCKET HM1221B Miter Gear, 12 DP, 21 Teeth, 1.750 Inch Pitch Dia., 0.689 Inch Bore, Steel
€124.59 /unit




