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Product Specifications:
| Item | Roller Chain Sprocket |
| Bore Type | Bushed |
| Bushing Part Number | 1210 |
| Chain Number | 40 |
| Chain Pitch | 1/2" |
| Construction | Solid With Recess Groove |
| Construction Type | Solid With Recess Groove |
| For Chain Number | 40 |
| For Chain Pitch | 1/2" |
| Hardened Teeth | 1 |
| Hub Configuration | B |
| Hub Outside Dia. | 2.4688" |
| Hub Recessed For Chain | 1 |
| Individually Packaged | Yes |
| Length Through Bore | 1" |
| Length Thru Bore | 1" |
| Material | Steel |
| Max. Bore Size | 1 1/4" |
| Min. Bore Size | 1/2" |
| No. Of Teeth | 18 |
| Number Of Chain Rows | 1 |
| Number Of Teeth | 18 |
| Outside Dia. | 3.136" |
| Pitch | 1/2" |
| Pitch Dia. | 2.8794" |
| Pitch Diameter | 2.879" |
| Single Strand Tooth Thickness | 0.284" |
| Storage Dimension Height | 1.06" |
| Storage Dimension Length | 3 1/4" |
| Storage Dimension Width | 3 1/4" |
Shipping Info:
| Ship weight (kg) | 0.29 |
| Ship height (cm) | 2.69 |
| Ship length (cm) | 7.98 |
| Ship width (cm) | 7.98 |
| Country of Origin | US |
Product Variants
| Product | Model | Number Of Teeth | Pitch Dia. | Outside Dia. | Length Through Bore | Bushing Type | For Chain Number | For Chain Pitch | Bore Type | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
40BTB14H | 14 | 2.247" | 2.491" | 7/8" | 1008 Taper Lock | 40 | 1/2" | Bushed | €70.11 | |
![]() |
40BTB15H | 15 | 2.4049" | 2.652" | 7/8" | 1008 Taper Lock | 40 | 1/2" | Bushed | €71.61 | |
![]() |
40BTB16H | 16 | 2.5629" | 2.814" | 7/8" | 1008 Taper Lock | 40 | 1/2" | Bushed | €72.81 | |
![]() |
40BTB17H | 17 | 2.7211" | 2.975" | 1" | 1210 Taper Lock | 40 | 1/2" | Bushed | €79.71 | |
![]() |
40BTB19H | 19 | 3.0378" | 3.296" | 1" | 1210 Taper Lock | 40 | 1/2" | Bushed | €88.14 | |
![]() |
40BTB20H | 20 | 3.1962" | 3.457" | 1" | 1610 Taper Lock | 40 | 1/2" | Bushed | €91.01 | |
![]() |
40BTB21H | 21 | 3.3548" | 3.617" | 1" | 1610 Taper Lock | 40 | 1/2" | Bushed | €97.54 |
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Contact us
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We're available Monday through Friday, from 07:30 until 17:00.
MARTIN SPROCKET 40BTB18H Sprocket, Taper, 40 Chain, 18 Teeth, 2.879 Inch Pitch Dia., 3.136 Inch O.D., Steel
€83.04 /unit


