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to protect the system from overload. Standard NRG shear pins are made from 1018 cold drawn steel and are necked down to various diameters which have corresponding torque ranges. Based on calculations or the preferred trial and error method, the ideal shear pin can be determined for your system. When tank loads exceed the normal operating range, the shear pin will break and allow the drive sprocket and hub to disengage before any collector components are damaged. Standard shear pins range from 0.08 inch necked down diameter to 0.13, although other sizes are also available. Shear pins also feature a roll pin which keeps the necked down diameter at the shear point between the drive sprocket assembly hubs. NRG shear pins can also be furnished with retainer rings. Shear pins are also available in Aluminum and Nylon if necessary. Contact your local NRG representative for more information. |
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| Part No. | Neck
Diameter (inches) |
Length (inches) |
Diameter (inch) |
Torque
Range* (inch - lbs) |
| SP1/2-08 |
.08 | 2 ¼ | ½ | 2212 |
| SP1/2-09 |
.09 | 2 ¼ | ½ | 2799 |
| SP1/2-10 | .10 | 2 ¼ | ½ | 3456 |
| SP1/2-11 | .11 | 2 ¼ | ½ | 4181 |
| SP1/2-12 | .12 | 2 ¼ | ½ | 4976 |
| * Approximate values |