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Product Specifications:
| Item | Roller Chain Sprocket |
| Bore Type | Bushed |
| Bushing Part Number | P1 |
| Bushing Size | P1 |
| Chain Number | 40 |
| Chain Pitch | 1/2" |
| Construction | Welded |
| Construction Type | Welded |
| For Chain Number | 40 |
| For Chain Pitch | 1/2" |
| Hub Configuration | B |
| Hub Diameter | 3 1/4" |
| Hub Outside Dia. | 3" |
| Individually Packaged | No |
| Keyway Size | 3/8" |
| Keyway Width | 3/8" |
| Length Through Bore | 1 5/16" |
| Length Thru Bore | 1 5/16" |
| Material | Steel |
| Max. Bore Size | 1 3/4" |
| Min. Bore Size | 1/2" |
| Number Of Chain Rows | 1 |
| Number Of Teeth | 56 |
| Outside Dia. | 9.203" |
| Pitch | 1/2" |
| Pitch Dia. | 8.9174" |
| Product Datasheet | martin-sprocket-100a10.pdf |
| Single Strand Tooth Thickness | 0.284" |
| Storage Dimension Height | 1.31" |
| Storage Dimension Length | 9.203" |
| Storage Dimension Width | 9.203" |
Shipping Info:
| Ship weight (kg) | 2.49 |
| Ship height (cm) | 3.33 |
| Ship length (cm) | 23.37 |
| Ship width (cm) | 23.37 |
| Country of Origin | US |
Documentation:
Product Variants
| Product | Model | Number Of Teeth | Pitch Dia. | Outside Dia. | Length Through Bore | Bushing Type | For Chain Pitch | For Chain Number | Bore Type | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
40P31 | 31 | 4.9423" | 5.217" | 1 15/16" | Type P1 Split Taper | 1/2" | 40 | Bushed | €155.31 | |
![]() |
40P32 | 32 | 5.1011" | 5.377" | 1 5/16" | MST P1 | 1/2" | 40 | Bushed | €155.46 | |
![]() |
40P33 | 33 | 5.2601" | 5.536" | 1 5/16" | MST P1 | 1/2" | 40 | Bushed | €157.04 | |
![]() |
40P34 | 34 | 5.419" | 5.696" | 1 15/16" | Type P1 Split Taper | 1/2" | 40 | Bushed | €158.62 | |
![]() |
40P35 | 35 | 5.5779" | 5.855" | 1 5/16" | MST P1 | 1/2" | 40 | Bushed | €160.48 | |
![]() |
40P36 | 36 | 5.7369" | 6.015" | 1 5/16" | MST P1 | 1/2" | 40 | Bushed | €169.06 | |
![]() |
40P37 | 37 | 5.8958" | 6.175" | 1 5/16" | MST P1 | 1/2" | 40 | Bushed | €174.19 |
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MARTIN SPROCKET 40P56 Sprocket, 40 Chain, 56 Teeth, 8.917 Inch Pitch Dia., 9.203 Inch O.D., Steel
€214.45 /unit




