FREE delivery on orders over €150
Product Specifications:
| Item | Roller Chain Sprocket |
| Bore Type | Bushed |
| Bushing Part Number | 1610 |
| Bushing Type | 1610 Taper Lock |
| 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. | 3.418" |
| Hub Outside Dia. | 3 1/4" |
| Individually Packaged | Yes |
| Length Through Bore | 1" |
| Length Thru Bore | 1" |
| Material | Steel |
| Max. Bore Size | 1 5/8" |
| Min. Bore Size | 1/2" |
| No. Of Chain Rows | 1 |
| No. Of Teeth | 25 |
| Outside Dia. | 4.258" |
| Pitch | 1/2" |
| Pitch Dia. | 3.989" , 3.9894" |
| Single Strand Tooth Thickness | 0.284" |
| Storage Dimension Height | 1.06" |
| Storage Dimension Length | 4 5/16" |
| Storage Dimension Width | 4 5/16" |
| Type | Taper Bushed Type B |
Shipping Info:
| Ship weight (kg) | 0.6 |
| Ship height (cm) | 2.69 |
| Ship length (cm) | 10.82 |
| Ship width (cm) | 10.82 |
| 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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40BTB14 | 2.247" | 14 | 7/8" | 1.813" | 2 9/16" | 2 9/16" | 15/16" | 7/8" | €70.11 | |
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40BTB15 | 2.405" | 15 | 7/8" | 1.813" | 2 7/8" | 2 7/8" | 15/16" | 7/8" | €71.61 | |
![]() |
40BTB16 | 2.563" | 16 | 7/8" | 1.937" | 2 7/8" | 2 7/8" | 15/16" | 7/8" | €72.81 | |
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40BTB17 | 2.721" | 17 | 1" | 2 3/8" | 3 1/4" | 3 1/4" | 1.06" | 1" | €79.71 | |
![]() |
40BTB18 | 2.879" | 18 | 1" | 2.469" | 3 1/4" | 3 1/4" | 1.06" | 1" | €83.04 | |
![]() |
40BTB19 | 3.038" | 19 | 1" | 2.469" | 3 5/8" | 3 5/8" | 1.06" | 1" | €88.14 | |
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40BTB20 | 3.196" | 20 | 1" | 2.781" | 3 5/8" | 3 5/8" | 1.06" | 1" | €91.01 |
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Contact us
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We're available Monday through Friday, from 07:30 until 17:00.
MARTIN SPROCKET 40BTB25 Roller Chain Sprocket, 40 Chain, Bushed TB, 25 Teeth, 3.989 Inch Pitch Dia., Steel
€115.01 /unit







