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Martin 40BS57 1 1/4 Type B finished bore roller chain sprocket for #40 chain with 1/2" pitch, 57 teeth, 1-1/4" finished bore with keyway and setscrews, steel construction, and 9.363" outside diameter. Single-strand design with hub on one side for power transmission applications.
MODEL 40BS57 1 1/4
Contact supplier for technical support on: 323-728-8117
$96.94 Each
Prices are subject to change
FREE SHIPPING ON ORDERS OVER $100
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Typically Ships in: 1 day
Returnable: See conditions
Material
Steel
Number Of Teeth
57
Outside Dia
9.363"
Pitch
0.500 in.
| Material | Steel | Hub Outside Diameter | 3.500 in. |
|---|---|---|---|
| Chain Number | 40 | Length thru Bore | 1.125 in. |
| Chain Pitch | 0.500 in. | Hub Recessed For Chain | No |
| Number of Chain Rows | 1 | Construction Detail | Welded |
| Number of Teeth | 57 | Bore Type | Bored To Size |
| Outside Diameter | 9.363 in. | Finished Bore Size | 1.250 in. |
| Pitch Diameter | 9.076 in. | Key Way Size | 1/4 X 1/8 in. |
| Single Strand Tooth Thickness | 0.284 in. | Set Screw Size | 5/16-18X5/16 in. |
| Hardened Teeth | No | Set Screw Location | (2) Set Screws (1) Over Kw And (1) At 90 |
| Hub Configuration | B | ||
| Storage Dimension Length | 9.363 in. | Weight | 6.60 lbs. |
| Storage Dimension Width | 9.363 in. | Individually Packaged | No |
| Storage Dimension Height | 1.130 in. |
SKU: 251157
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The 21 tooth 12 DP gear I bought arrived very quickly. It was exactly what I needed to fix my RV slide out. I had to machine it to fit, but I knew that when I ordered it. VERY SATISFIED!!!
Read moreSKU: 265185
Great prices and quality products
Your products are not only affordable, but they are also priced very fairly and competitively & always ship out pretty quickly. You have gained a new regular customer and stolen us from one of our regular distributors without even trying. Thank you for being awesome! Not to mention the free shipping over $100 perk is super appreciated as we not only are saving money per item, but we are also able to buy in bulk without the additional burden of freight/shipping costs. THANK YOU!! :)
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SKU: 251157
21 tooth 12 dp spur gear
The 21 tooth 12 DP gear I bought arrived very quickly. It was exactly what I needed to fix my RV slide out. I had to machine it to fit, but I knew that when I ordered it. VERY SATISFIED!!!
Read moreSKU: 265185
Great prices and quality products
Your products are not only affordable, but they are also priced very fairly and competitively & always ship out pretty quickly. You have gained a new regular customer and stolen us from one of our regular distributors without even trying. Thank you for being awesome! Not to mention the free shipping over $100 perk is super appreciated as we not only are saving money per item, but we are also able to buy in bulk without the additional burden of freight/shipping costs. THANK YOU!! :)
Read moreItem must be unused.
Item must be in it's original package.
Restocking, shipping and handling fees may apply to any return with this manufacturer.
For more information please consult https://www.mrosupply.com/page/returnwarranty-policy/