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Product Specifications:
| Item | Sprocket |
| Bore Dia. | 1" to 1 3/4" |
| Chain Size | #821 |
| Length Through Bore | 1 5/8" |
| Material | Cast Iron |
| No. Of Teeth | 21 |
| Pitch Dia. | 5.089" |
| Series | 800 Series |
| Type | Arm Body |
Shipping Info:
| Ship weight (kg) | 2.74 |
| Ship height (cm) | 2.54 |
| Ship length (cm) | 13 |
| Ship width (cm) | 13 |
| Country of Origin | US |
Product Variants
| Product | Model | Pitch Dia. | No. Of Teeth | Type | Chain Size | Material | Length Through Bore | Bore Dia. | Series | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
821A25 | 6.032" | 25 | Arm Body | #821 | Cast Iron | 1 5/8" | 1" to 1 3/4" | 800 Series | €437.36 | |
![]() |
821A27 | 6.504" | 27 | Arm Body | #821 | Cast Iron | 1 5/8" | 1" to 1 3/4" | 800 Series | €441.84 | |
![]() |
821A23 | 5 14/25" | 23 | Arm Body Stock Bore | 821 | Cast Iron | 1 5/8" | 1" to 1 3/4" | 800 Series | €395.88 | |
![]() |
821A29 | 6.978" | 29 | Arm Body | #821 | Cast Iron | 1 5/8" | 1" to 1 3/4" | 800 Series | €490.92 |
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MARTIN SPROCKET 821A21 Sprocket, Stock Bore, 5.120 Inch Outside Dia., 21 Teeth, Cast Iron
€395.88 /unit




