Frequently Asked Questions About Groov-Pins
Q: Where would you use a Groov-Pin?
A: You can use Groov-Pins in thousands of places. Here are a few examples:
- Hinges for rotation
- Valves for a T-turn
- Sprinklers as a fulcrum pin
- Latches for rotation
- Heat Sinks for locating pins
- Firearms for holding together the trigger and hammer
- Conveyor Chain for linking tracks together
- Hand Tools as swivel pins in universal joints
- Pumps for spring anchors and locating pins
- Shaft for locating pin for gears or other attachments
- Locks for tamper-proof assembly
Q: Why would I use a Groov-Pin?
A: There are many reasons to use Groov-Pins. Here are a few benefits of using our Groov-Pins:
- They require only a straight hole, without the need for close tolerances. The expanded diameter allows for relaxed tolerances in the application hole.
- There are no reaming, milling, or tapping operations involved, keeping production costs low.
- They withstand severe shock and vibration.
- They are solid, which makes them stronger than spring pins.
- They are made in different groove types to suit a variety of applications.
- They can provide a smooth bearing surface for rotation.
- They are quick and easy to install.
Q: How does the Groov-Pin work?
A: The expanded diameter gets pressed back to its original size (nominal diameter) when the Groov-Pin is inserted into the hole. The pin then tries to return to the expanded diameter, but is constrained by the hole's wall. This constraining action causes a locking fit, which resists severe shock and vibration.
Q: What kind of materials are our standard pins made of? Surface treatment?
|1215 Low Carbon Steel||
Cadmium, Zinc, Nickel, Oil, Black Oxide, None.
|303 Stainless Steel||Passivation, None.|
|6150 Alloy Steel||Cadmium, Zinc, Nickel, Oil, Black Oxide, None|
Q: What is the shear strength for Groov-Pins compared to Spring Pins?
A: The Groov-Pin shear strength is up to twice the shear strength of a spring pin of the same diameter. The shear resistance of alloy steel Groov-Pins can be 40% higher than that of a heavy-duty spring pin.
Q: What size hole should a Groov-Pin be installed in?
A: The suggested hole size can be found on page 7 in the Groov-Pin Catalog.
Q: What is the tolerance for overall length and straightness of Groov-Pins?
A: The tolerance for overall length is +/-.010 inch and for straightness +/-010 per inch.
Q: With what kind of equipment can I install a Groov-Pin? How much force is required?
A: Groov-Pins can be pressed in by hammer, air cylinder, or hydraulic press. For the required insertion force, see the chart found on page 12 in the Groov-Pin Catalog.
Q: What is the difference between Tapered Groove and Parallel Groove?
A: A parallel groove has more engagement between the pin and the hole walls. A parallel groove has higher pull-out strength, but requires a higher insertion force.
Q: How are Groov-Pin dimensions and characteristics measured?
|Expansion Diameter||Ring Gage|