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Product Specifications:
| Item | Roller Chain Sprocket |
| Bore Type | Bushed |
| Bushing Part Number | SK |
| Bushing Size | SK |
| Chain Number | 40 |
| Chain Pitch | 1/2" |
| Construction | Solid |
| Construction Type | Solid |
| For Chain Number | 40 |
| For Chain Pitch | 1/2" |
| Hub Configuration | B |
| Hub Diameter | 4" |
| Hub Outside Dia. | 4" |
| Individually Packaged | No |
| Length Through Bore | 1 1/4" |
| Length Thru Bore | 1 1/4" |
| Material | Steel |
| Max. Bore Size | 2 5/8" |
| Min. Bore Size | 1/2" |
| No. Of Teeth | 42 |
| Number Of Chain Rows | 2 |
| Number Of Teeth | 42 |
| Outside Dia. | 6.972" |
| Pitch | 1/2" |
| Pitch Dia. | 6.6907" |
| Pitch Diameter | 6.691" |
| Product Datasheet | martin-sprocket-100a10.pdf |
| Single Strand Tooth Thickness | 0.275" |
| Storage Dimension Height | 1 1/4" |
| Storage Dimension Length | 6.972" |
| Storage Dimension Width | 6.972" |
Shipping Info:
| Ship weight (kg) | 3.07 |
| Ship height (cm) | 3.18 |
| Ship length (cm) | 17.7 |
| Ship width (cm) | 17.7 |
| Country of Origin | US |
Documentation:
Product Variants
| Product | Model | Number Of Teeth | Pitch Dia. | Outside Dia. | Bushing Type | For Chain Number | For Chain Pitch | Bore Type | Length Through Bore | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
D40SK36 | 36 | 5.7369" | 6.015" | Type SK QD | 40 | 1/2" | Bushed | 1 1/4" | €225.99 | |
![]() |
D40SK40 | 40 | 6.3727" | 6.653" | Type SK QD | 40 | 1/2" | Bushed | 1 1/4" | €226.71 | |
![]() |
D40SK45 | 45 | 7.1678" | 7.45" | QD SK | 40 | 1/2" | Bushed | 1 1/4" | €300.37 | |
![]() |
D40SK48 | 48 | 7.6449" | 7.929" | QD SK | 40 | 1/2" | Bushed | 1 1/4" | €312.12 | |
![]() |
D40SK52 | 52 | 8.281" | 8.566" | QD SK | 40 | 1/2" | Bushed | 1 1/4" | €322.84 | |
![]() |
D40SK54 | 54 | 8.5992" | 8.885" | QD SK | 40 | 1/2" | Bushed | 1 1/4" | €286.57 | |
![]() |
D40SK60 | 60 | 9.5537" | 9.841" | QD SK | 40 | 1/2" | Bushed | 1 1/4" | €314.19 |
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Contact us
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MARTIN SPROCKET D40SK42 Sprocket, QD, 40 Chain, 42 Teeth, 6.691 Inch Pitch Dia., 6.972 Inch O.D., Steel
€227.70 /unit






