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Product Specifications:
| Item | Roller Chain Sprocket |
| Bore Type | Bushed |
| Bushing Part Number | SDS |
| Bushing Size | SDS |
| 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 Diameter | 3 1/4" |
| Hub Outside Dia. | 3 1/2" |
| Individually Packaged | Yes |
| Length Through Bore | 1 3/8" |
| Length Thru Bore | 3/4" |
| Material | Steel |
| Max. Bore Size | 2" |
| Min. Bore Size | 1/2" |
| Number Of Chain Rows | 1 |
| Number Of Teeth | 20 |
| Outside Dia. | 4.321" |
| Pitch | 5/8" |
| Pitch Dia. | 3.9953" |
| Pitch Diameter | 3.995" |
| Single Strand Tooth Thickness | 0.343" |
| Storage Dimension Height | 3/4" |
| Storage Dimension Length | 4 1/2" |
| Storage Dimension Width | 4 1/2" |
Shipping Info:
| Ship weight (kg) | 0.54 |
| Ship height (cm) | 3.51 |
| Ship length (cm) | 10.97 |
| Ship width (cm) | 10.97 |
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
50JA12 | 12 | 2.4148" | 2.708" | 5/8" | Type JA QD | 50 | 5/8" | Bushed | €66.70 | |
![]() |
50JA13 | 13 | 2.6116" | 2.911" | 5/8" | Type JA QD | 50 | 5/8" | Bushed | €76.26 | |
![]() |
50JA14 | 14 | 2.8087" | 3.113" | 5/8" | Type JA QD | 50 | 5/8" | Bushed | €78.09 | |
![]() |
50JA15 | 15 | 3.0061" | 3.315" | 5/8" | Type JA QD | 50 | 5/8" | Bushed | €82.44 | |
![]() |
50JA16 | 16 | 3.2036" | 3.517" | 5/8" | Type JA QD | 50 | 5/8" | Bushed | €84.57 | |
![]() |
50SH17 | 17 | 3.4014" | 3.718" | 1 5/16" | Type SH QD | 50 | 5/8" | Bushed | €89.22 | |
![]() |
50SH18 | 18 | 3.5992" | 3 23/25" | 1 5/16" | Type SH QD | 50 | 5/8" | Bushed | €91.31 |
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Contact us
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We're available Monday through Friday, from 07:30 until 17:00.
MARTIN SPROCKET 50SDS20 Sprocket, QD, 50 Chain, 20 Teeth, 3.995 Inch Pitch Dia., 4.321 Inch O.D., Steel
€98.34 /unit







