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Product Specifications:
| Item | Roller Chain Sprocket |
| Material | Steel |
| No. Of Teeth | 21 |
| Number Of Teeth | 21 |
| Outside Diameter | 233.66 mm |
| Pitch | 31.75 mm |
| Pitch Dia. | 213.03 mm |
Shipping Info:
| Ship weight (kg) | 2.03 |
| Ship height (cm) | 2.54 |
| Ship length (cm) | 23.37 |
| Ship width (cm) | 23.37 |
| Country of Origin | US |
Product Variants
| Product | Model | Pitch Dia. | Outside Dia. | Number Of Teeth | Length Through Bore | Bushing Type | Pitch | Price | |
|---|---|---|---|---|---|---|---|---|---|
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20BTB12H | 122.67 mm | 143.31 mm | 12 | 38.1 mm | 1615 Taper | 31.75 mm | €341.08 | |
![]() |
20BTB15H | 152.71 mm | 173.35 mm | 15 | 44.45 mm | 2517 Taper | 31.75 mm | €518.81 | |
![]() |
20BTB16H | 162.75 mm | 183.38 mm | 16 | 44.45 mm | 2517 Taper | 31.75 mm | €549.67 | |
![]() |
20BTB20H | 202.96 mm | 223.6 mm | - | 44.45 mm | 2517 Taper | 31.75 mm | €659.61 | |
![]() |
20BTB36 | 364.29 mm | 384.93 mm | 36 | 50.8 mm | 3020 Taper | 31.75 mm | €851.74 | |
![]() |
20BTB40 | 404.67 mm | 425.31 mm | - | 50.8 mm | 3020 Taper | 31.75 mm | €980.76 | |
![]() |
20BTB13H | 132.67 mm | 153.31 mm | 13 | 31.75 mm | 2012 Taper | 31.75 mm | €374.65 |
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MARTIN SPROCKET 20BTB21H Sprocket, 20B-1 Chain, 21 Teeth, 213.030 mm Pitch Dia., 233.660 mm O.D., Steel
€678.32 /unit




