30+ Years Experienced custom fastener manufacturer & factory committed 0 PPM for production
What is a split pin?
A cotter pin is a mechanical component used to prevent loosening of threaded connections.
After tightening the nut, insert the cotter pin into the nut slot and bolt tail hole, and pull the
cotter pin tail apart to prevent the relative rotation of the nut and bolt. To avoid damaging the
hole wall, grease and lubricating oil can be added to the pin hole. The production of this part
requires the use of high-quality steel and rigid materials with good elasticity.
Pull the cotter pin apart and clamp any part of its leg into the inspection mold (no flattening
should occur); Then bend the cotter pin by 90 °, one round trip being one bend. The test speed
shall not exceed 60 times/min. The inspection mold should have a semicircular slot hole with
a diameter that is the nominal size of the cotter pin. The jaw should have a rounded corner
of r=0.5 mm.
Insert a cotter pin through a hole in one part and a slot in another part and separate the threaded
end to prevent relative movement of the part.
Installation method
01
There is no hole at the end of the bolt, so it needs to be punched first
02
Insert the cotter pin into the cylindrical pin by hand or pliers, and do not use a hammer to
drive the cotter pin in
03
Use pliers to break off the cotter pin.
04
The angle for breaking off the split pin is in principle 60 °. If it collides with the workpiece,
roll up the cotter pin and make the separated parts straight and symmetrical.
05
Confirm that the nut and bolt will not rotate relative to each other, and then the installation
is completed.
Chuanghe Fastener Co, Ltd. (CHE ) offers OEM & ODM & Customized services to customer, which included cold heading, CNC processing center, wire cutting, powder metallurgy processing and assembly of metal parts with plastic parts.We have industry leading quality inspection equipment such as 3D scanner, Ultrasonic Flaw Detector etc