FREE delivery on orders over €150
Product Specifications:
| Item | Roller Chain Sprocket |
| Bore Type | Bushed |
| Bushing Part Number | JA |
| Bushing Size | JA |
| Bushing Type | Type JA 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" |
| Hardened Teeth | 1 |
| Hub Configuration | B |
| Hub Dia. | 2.063" |
| Hub Outside Dia. | 2 1/8" |
| Individually Packaged | No |
| Length Through Bore | 1 1/16" |
| Length Thru Bore | 14/25" |
| Material | Steel |
| Max. Bore Size | 1 1/4" |
| Min. Bore Size | 3/8" |
| No. Of Chain Rows | 1 |
| No. Of Teeth | 18 |
| Outside Dia. | 3.136" |
| Pitch | 1/2" |
| Pitch Dia. | 2.879" , 2.8794" |
| Single Strand Tooth Thickness | 0.284" |
| Storage Dimension Height | 0.63" |
| Storage Dimension Length | 3.136" |
| Storage Dimension Width | 3.136" |
| Type | QD Bushed Type B |
Shipping Info:
| Ship weight (kg) | 0.23 |
| Ship height (cm) | 2.69 |
| Ship length (cm) | 7.98 |
| Ship width (cm) | 7.98 |
| 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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40JA15H | 2.4049" | 15 | 5/8" | 2.05" | 3 1/16" | 3 1/16" | 13/16" | 14/25" | €77.79 | |
![]() |
40JA16H | 2.563" | 16 | 1 1/16" | 2.063" | 3 1/16" | 3 1/16" | 13/16" | 14/25" | €80.26 | |
![]() |
40JA17H | 2.7211" | 17 | 5/8" | 2 1/8" | 3 1/16" | 3 1/16" | 13/16" | 14/25" | €86.43 | |
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40JA19H | 3.0378" | 19 | 5/8" | 2 1/8" | 3 1/2" | 3 1/2" | 3/4" | 14/25" | €89.87 | |
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40SH20H | 3.196" | 20 | 1 5/16" | 2.688" | 3 1/2" | 3 1/2" | 15/16" | 0.812" | €90.47 | |
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40SH21H | 3.3548" | 21 | 13/16" | 2 3/4" | 3 7/8" | 3 7/8" | 15/16" | 0.812" | €105.81 | |
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40SH22H | 3.5133" | 22 | 13/16" | 2 3/4" | 3 7/8" | 3 7/8" | 15/16" | 0.812" | €109.82 |
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Contact us
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We're available Monday through Friday, from 07:30 until 17:00.
MARTIN SPROCKET 40JA18H Sprocket, QD, 40 Chain, 18 Teeth, 2.879 Inch Pitch Dia., 3.136 Inch O.D., Steel
€88.70 /unit


