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Product Specifications:
| Item | Roller Chain Sprocket |
| Bore Type | Bushed |
| Bushing Part Number | 1610 |
| Chain Number | 50 |
| Chain Pitch | 5/8" |
| Construction | Solid |
| Construction Type | Solid |
| For Chain Number | 50 |
| For Chain Pitch | 5/8" |
| Hub Configuration | B |
| Hub Outside Dia. | 3" |
| Length Through Bore | 1" |
| Length Thru Bore | 1" |
| Material | Steel |
| Max. Bore Size | 1 5/8" |
| Min. Bore Size | 1/2" |
| No. Of Teeth | 21 |
| Number Of Chain Rows | 1 |
| Number Of Teeth | 21 |
| Outside Dia. | 4.522" |
| Pitch | 5/8" |
| Pitch Dia. | 4.1934" |
| Single Strand Tooth Thickness | 0.343" |
| Storage Dimension Height | 1.06" |
| Storage Dimension Length | 4 5/8" |
| Storage Dimension Width | 4 5/8" |
Shipping Info:
| Ship weight (kg) | 0.6 |
| Ship height (cm) | 2.69 |
| Ship length (cm) | 11.48 |
| Ship width (cm) | 11.48 |
| Country of Origin | US |
Product Variants
| Product | Model | Number Of Teeth | Pitch Dia. | Outside Dia. | Length Through Bore | Bushing Type | For Chain Number | For Chain Pitch | Bore Type | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
50BTB12 | 12 | 2.4148" | 2.708" | 7/8" | 1008 Taper Lock | 50 | 5/8" | Bushed | €83.04 | |
![]() |
50BTB13 | 13 | 2.6116" | 2.911" | 7/8" | 1008 Taper Lock | 50 | 5/8" | Bushed | €84.23 | |
![]() |
50BTB14 | 14 | 2.8087" | 3.113" | 7/8" | 1008 Taper Lock | 50 | 5/8" | Bushed | €88.14 | |
![]() |
50BTB15 | 15 | 3.0061" | 3.315" | 1" | 1210 Taper Lock | 50 | 5/8" | Bushed | €90.83 | |
![]() |
50BTB16 | 16 | 3.2036" | 3.517" | 1" | 1610 Taper Lock | 50 | 5/8" | Bushed | €91.01 | |
![]() |
50BTB17 | 17 | 3.4014" | 3.718" | 1" | 1610 Taper Lock | 50 | 5/8" | Bushed | €97.54 | |
![]() |
50BTB18 | 18 | 3.5992" | 3 23/25" | 1" | 1610 Taper Lock | 50 | 5/8" | Bushed | €99.00 |
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MARTIN SPROCKET 50BTB21 Roller Chain Sprocket, 50 Chain, Bushed TB, 21 Teeth, 4.193 Inch Pitch Dia., Steel
€117.12 /unit







