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Martin S321 steel spur gear with 3 diametral pitch, 21 teeth, and 14.5-degree pressure angle. Outside diameter 7.666". Stock spur gear for power transmission applications. Compatible with other 14.5-degree PA gears.
MODEL S321
Contact supplier for technical support on: 323-728-8117
$987.08 Each
Prices are subject to change
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Typically Ships in: 1 day
Returnable: See conditions
Material
Steel
Number Of Teeth
21
Outside Dia
7.666"
| Material | Steel | Face Width | 3.000 in. |
|---|---|---|---|
| Diametral Pitch | 3 | Bore Type | Reborable |
| Pressure Angle | 14.500 deg. | Min Bore Size | 1.438 in. |
| Number of Teeth | 21 | Max Bore Size | 3.875 in. |
| Pitch Diameter | 7.000 in. | Length thru Bore | 3.000 in. |
| Outside Diameter | 7.666 in. |
| Storage Dimension Length | 7.666 in. | Weight | 30.58 lbs. |
|---|---|---|---|
| Storage Dimension Width | 7.666 in. | Individually Packaged | No |
| Storage Dimension Height | 3.000 in. |
SKU: 261393
Great service
Very quick service part was exactly what I needed to get my skid steer going again great product and I will definitely use this business again
Read moreSKU: 250096
Durable and high quality
I bought a second one to keep as a spare, but the first one still hasn’t shown any signs of wear. Seems like a quality part.
Read moreSKU: 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 moreBrand
Boston Gear
Model
NO21B
| Brand | VORTEX |
| Model | VOR XH175-50-56C-1 |
| Brand | Allen Bradley |
| Model | 440N-Z21S16B |
SKU: 261393
Great service
Very quick service part was exactly what I needed to get my skid steer going again great product and I will definitely use this business again
Read moreSKU: 250096
Durable and high quality
I bought a second one to keep as a spare, but the first one still hasn’t shown any signs of wear. Seems like a quality part.
Read moreSKU: 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 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/