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Product Specifications:
| Item | Roller Chain Sprocket |
| Bore Dia. | 23/32" to 2 3/8" |
| Bore Type | Finished Bore |
| Chain Number | 2042 |
| Chain Pitch | 1" |
| Chain Size | #2042 |
| Construction | Solid |
| Construction Type | Solid |
| Finished Bore Size | 0.7188" |
| For Chain Number | 2042 |
| For Chain Pitch | 1" |
| Hub Configuration | A |
| Hub Dia. | 2 3/8" |
| Individually Packaged | No |
| Length Through Bore | 0.284" |
| Length Thru Bore | 0.265" |
| Material | Steel |
| Min. Bore Size | 0.7188" |
| No. Of Chain Rows | 1 |
| No. Of Teeth | 21 |
| Outside Dia. | 7.23" |
| Pitch | 1" |
| Pitch Dia. | 6.7095" , 6.71" |
| Single Strand Tooth Thickness | 0.284" |
| Storage Dimension Height | 0.284" |
| Storage Dimension Length | 7.23" |
| Storage Dimension Width | 7.23" |
| Type | Type A Single Strand Double Pitch Reboreable |
Shipping Info:
| Ship weight (kg) | 1.18 |
| Ship height (cm) | 0.72 |
| Ship length (cm) | 18.36 |
| Ship width (cm) | 18.36 |
| Country of Origin | US |
Product Variants
| Product | Model | Pitch Dia. | No. Of Teeth | Hub Dia. | Bore Dia. | Chain Size | Storage Dimension Length | Storage Dimension Width | Finished Bore Size | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
2042A16 | 5.126" | 16 | 2 1/4" | 19/32" to 2 1/4" | #2042 | 5.63" | 5.63" | 0.5938" | €88.48 | |
![]() |
2042A20 | 6.392" | 20 | 3 1/2" | 0.719" | 2042 | 6.91" | 6.91" | 0.7188" | €103.98 | |
![]() |
2042A23 | 7.344" | 23 | 2 3/8" | 23/32" to 2 3/8" | #2042 | 7 22/25" | 7 22/25" | 0.7188" | €114.10 | |
![]() |
2042A30 | 9.567" | 30 | 2 3/8" | 23/32" to 2 3/8" | #2042 | 10.11" | 10.11" | 0.7188" | €134.37 | |
![]() |
2042A19 | 6.076" | 19 | 2 1/4" | 19/32" to 2 1/4" | #2042 | 6.59" | 6.59" | 0.5938" | €101.50 | |
![]() |
2042A28 | 8.931" | 28 | 2 3/8" | 23/32" to 2 3/8" | #2042 | 9 12/25" | 9 12/25" | 0.7188" | €127.58 | |
![]() |
2042A25 | 7.979" | 25 | 2 3/8" | 23/32" to 2 3/8" | #2042 | 8 13/25" | 8 13/25" | 0.7188" | €117.24 |
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MARTIN SPROCKET 2042A21 Sprocket, 2042 Chain, 21 Teeth, 6.710 Inch Pitch Dia., 7.230 Inch O.D., Steel
€107.25 /unit







