What is a PTO shear bolt?
A PTO shear bolt/pin is often used on machinery where there is little chance of the machine being obstructed. The bolt shears under a designated amount of torque. When you hit a rock when cutting the idea is the pin would break and the PTO will spin freely and not powering the machinery.
What is the purpose of a shear pin?
A shear pin (also known as a shear bolt) is a weak bolt that connects your auger to the auger shaft. That connection allows the augers to rotate, collect snow and send snow into the impeller fan where the snow is thrown from the chute.
What happens when a shear pin becomes overloaded?
If an overload greater than the pin’s shear strength occurs, the pin will break, or shear, releasing and thus protecting the mating components. Although the principle is simple and the solution relatively inexpensive, replacement of a sheared pin necessitates downtime and possibly a maintenance mechanic.
What does a slip clutch do on a brush hog?
A PTO slip clutch is a torque limiting device that, when overcome with too much torque, limits the amount of torque being transferred from the tractor to the implement. This is accomplished by, you guessed it, slipping or spinning free which allows the two sides of the PTO shaft to spin at different speeds.
What grade should shear bolt for bush hog?
A 1/2 x 3” Grade 2 shear bolt protects the gearbox and drive- line from damage. The 35 HP gearbox is designed for 540 RPM input speed giving the blades a 12,468 ft./min.
Is a slip clutch better than a shear pin?
Most folks will tell you that a slip clutch is better than a shear bolt. I dunno……a slip clutch has to be in good working order for it to protect. A shear pin is simple. I have both on implements.
How does an electronic shear pin work?
The Electronic Shear Pin model ESP 1 & 2 monitors the current drawn by an A.C. induction motor in a manner that closely approximates the torque output of the motor.
What is an electronic shear pin?
‘No more unreliable shear pins, troublesome. slipping clutches or other cumbersome torque limiting devices’ The unique electronic circuitry within the ZENER ESP system monitors certain characteristics of the motor/gearbox to closely approximate the output torque of the drive system.
How tight should a shear bolt be?
Oh yeah, a shear bolt should stay fairly tight. If it’s coming loose, even with a lock nut, just double nut it. It will not loosen. If it is coming loose it’s usually because of #1, which is allowing it to work back and forth in the hole.
How to find the correct shear pin for a PTO shaft?
You will need to measure the diameter of the groove bottom at the ends of the PTO shaft to get the correct shield. On the shear bolts you can just use the correct size and length bolt in grade 2. I buy longer than needed to get the unthreaded shank to extend completely through the PTO yokes.
Which is cheaper PTO slip clutch or shear bolt?
It is also a cheaper option to supply than the PTO slip clutch. The bolt shears under a designated amount of torque. When you hit a rock when cutting the idea is the pin would break and the PTO will spin freely and not powering the machinery.
Where can I get a PTO shaft shield?
Our many PTO shaft accessories can help you out. Our selection of power take off parts covers dozens of sizes, models and styles so you can find what you need for your farm tractor or lawn equipment. Our PTO shields and components include replacement shields for constant velocity PTO shafts.
How big is the pin on a Countyline shear bolt?
Shear Bolt by CountyLine is a specific replacement for All PTO driven CountyLine equipment. 5-1/4 in. x 1 in. x 7 in. The shear pin is 3-1/2 in. x 1/2 in. Grade 2