FREE delivery on orders over €150
Product Specifications:
| Item | Roller Chain Sprocket |
| Bore Type | Bushed |
| Bushing Part Number | SH |
| Bushing Size | SH |
| Bushing Type | Type SH QD |
| Chain Number | 40 |
| Chain Pitch | 1/2" |
| Chain Size | #40 |
| Construction | Solid |
| Construction Type | Solid |
| For Chain Number | 40 |
| For Chain Pitch | 1/2" |
| Hub Configuration | B |
| Hub Dia. | 2 3/4" |
| Hub Outside Dia. | 2 3/4" |
| Individually Packaged | Yes |
| Length Through Bore | 1 5/16" |
| Length Thru Bore | 0.812" |
| Material | Steel |
| Max. Bore Size | 1 11/16" |
| Min. Bore Size | 1/2" |
| No. Of Chain Rows | 1 |
| No. Of Teeth | 21 |
| Outside Dia. | 3.617" |
| Pitch | 1/2" |
| Pitch Dia. | 3.3548" , 3.355" |
| Single Strand Tooth Thickness | 0.284" |
| Storage Dimension Height | 15/16" |
| Storage Dimension Length | 3 7/8" |
| Storage Dimension Width | 3 7/8" |
| Type | QD Bushed Type B |
Shipping Info:
| Ship weight (kg) | 0.37 |
| Ship height (cm) | 3.33 |
| Ship length (cm) | 9.19 |
| Ship width (cm) | 9.19 |
| Country of Origin | US |
Product Variants
| Product | Model | Pitch Dia. | No. Of Teeth | Length Through Bore | Hub Dia. | Storage Dimension Length | Storage Dimension Width | Storage Dimension Height | Length Thru Bore | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
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40JA15 | 2.405" | 15 | 1 1/16" | 2.05" | 3 1/16" | 3 1/16" | 13/16" | 14/25" | €58.34 | |
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40JA16 | 2.563" | 16 | 1 1/16" | 2.062" | 3 1/16" | 3 1/16" | 13/16" | 14/25" | €61.11 | |
![]() |
40JA17 | 2.721" | 17 | 1 1/16" | 2 1/8" | 3 1/16" | 3 1/16" | 13/16" | 14/25" | €66.70 | |
![]() |
40JA18 | 2.879" | 18 | 1 1/16" | 2 1/8" | 3 3/16" | 3 3/16" | 3/4" | 14/25" | €71.31 | |
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40JA19 | 3.038" | 19 | 1 1/16" | 2 1/8" | 3 1/2" | 3 1/2" | 3/4" | 14/25" | €76.26 | |
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40SH20 | 3.196" | 20 | 1 5/16" | 2.688" | 3 1/2" | 3 1/2" | 15/16" | 0.812" | €82.44 | |
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40SH22 | 3.513" | 22 | 1 5/16" | 2 3/4" | 3 7/8" | 3 7/8" | 15/16" | 0.812" | €95.14 |
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Contact us
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We're available Monday through Friday, from 07:30 until 17:00.
MARTIN SPROCKET 40SH21 Sprocket, QD, 40 Chain, 21 Teeth, 3.355 Inch Pitch Dia., 3.617 Inch O.D., Steel
€89.22 /unit







