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Product Specifications:
| Item | Worm Gear |
| Bore Dia. | 1" to 1.439" |
| Diametral Pitch | 6 |
| Direction Of Rotation | Right Hand |
| Face Width | 1" |
| Gear Ratio | 40:1 |
| Hub Dia. | 2 1/2" |
| Hub Projection | 7/8" |
| Hub Type | B |
| Key Way Size | 3/16" x 3/32" |
| Material | Cast Iron |
| No. Of Teeth | 40 |
| No. Of Threads | 1 |
| Outside Dia. | 7.04" |
| Pitch Dia. | 6.667" |
| Pressure Angle | 14.5° |
| Type | Reborable Web |
Shipping Info:
| Ship weight (kg) | 3.41 |
| Ship height (cm) | 2.54 |
| Ship length (cm) | 17.88 |
| Ship width (cm) | 17.88 |
| Country of Origin | US |
Product Variants
| Product | Model | Bore Dia. | Pitch Dia. | Outside Dia. | Hub Dia. | Hub Projection | Gear Ratio | Diametral Pitch | Pressure Angle | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
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W620 | 0.75" to 1.001" | 3.333" | 3.706" | 1 7/8" | 7/8" | - | 6 | 14.5° | €250.32 | |
![]() |
W630 | 0.875" to 1.314" | 5" | 5.373" | 2 1/4" | 7/8" | 30:1 | 6 | 14.5° | €348.95 | |
![]() |
W660 | 1.25" to 1.815" | 10" | 10.373" | 3" | 1 1/4" | - | 6 | 14.5° | €581.49 | |
![]() |
W624 | 0.75" to 1.001" | 4" | 4.373" | 1 7/8" | 7/8" | 24:1 | 6 | 14.5° | €287.57 | |
![]() |
W648 | 1.25" to 1.627" | 8" | 8.373" | 2 3/4" | 1" | 48:1 | 6 | 14.5° | €540.67 | |
![]() |
W636 | 1" to 1.439" | 6" | 6.373" | 2 1/2" | 7/8" | 36:1 | 6 | 14.5° | €406.18 |
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MARTIN SPROCKET W640 Worm Gear, 6 Diametral Pitch, 6.667 Inch Pitch Dia., Reborable, Cast Iron
€452.71 /unit






