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Product Specifications:
| Item | Sprocket |
| Bore Diameter | 3/4" to 1 3/4" |
| Chain Size | #815 |
| Length Through Bore | 1 11/16" |
| Material | Cast Iron |
| No. Of Teeth | 21 |
| Number Of Teeth | 21 |
| O.d. | 5 3/25" |
| Outside Dia. | 5.12" |
| Pitch Dia. | 5.089" |
| Product Datasheet | martin-sprocket-100a10.pdf |
| Series | 800 Series |
| Type | Arm Body |
Shipping Info:
| Ship weight (kg) | 2.88 |
| Ship height (cm) | 4.29 |
| Ship length (cm) | 13 |
| Ship width (cm) | 13 |
| Country of Origin | US |
Documentation:
Product Variants
| Product | Model | Outside Dia. | Number Of Teeth | Pitch Dia. | Length Through Bore | Type | Price | |
|---|---|---|---|---|---|---|---|---|
![]() |
815A25 | 6.07" | - | - | 1 11/16" | Arm Body | €267.81 | |
![]() |
815A15B | 3.63" | 15 | - | 1 11/16" | Block Body | €222.27 | |
![]() |
815A27 | 6.56" | 27 | 6.504" | 1 11/16" | Arm Body | €333.83 | |
![]() |
815A17B | 4.12" | 17 | 4.153" | 1 11/16" | Block Body | €257.05 | |
![]() |
815A13B | 3.11" | 13 | 3.228" | 1 11/16" | Block Body | €196.81 | |
![]() |
815A31 | 7.53" | - | 7.452" | 1 11/16" | Arm Body | €410.60 | |
![]() |
815A19 | 4.61" | 19 | 4.62" | 1 11/16" | Arm Body | €233.87 |
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Contact us
Contact your account manager right away to get personal advice.
We're available Monday through Friday, from 07:30 until 17:00.
MARTIN SPROCKET 815A21 Sprocket, Stock Bore, 5.120 Inch Outside Dia., 21 Teeth, Cast Iron
€250.39 /unit




