Mocayo Lock Pin Mechanism

A precise lock pin mechanism gives mocayo quick release pin/ball lock pin a firm ball locking to connect parts and components. Our ball locking pins are strictly qulity controlled by the team, which makes the function workability long last.

What is lock pin mechainsm?

As you can see from the drawing, a lock pin technique includes metal pin body, metal balls, spring,spindle, alloy handle and button. Once you press down the button, the spring is pressured and spin the spindle and the balls retract. This is the best moment to put the pin insert to a hole. When you release the button, the spring loses force load, the spindle turn back pushing the balls out of the hole on the pin, which means the balls are locking and connecting. This's the lock pin mechanism.

Lock pin mechanism provides secure locking and easy operation. Perfect for construction, automotive, and aerospace engineering.

How do we process the ball lock pin?

We take the model :MOX08-25-SS as example.

1.Button
Material: AL/303/304/316
Processing:
AL: Procurement/CNC/Automatic Lathe (UV resistance, oxidation requires extended processing time)
303 SS: Procurement/CNC/Polishing (degreasing, surface treatment enhancement)/Passivation (adds 48H/72H to delay testing time)

2.Internal Spindle
Material: SS/ST(420)/17-4
Processing:
Carbon Steel /17-4: Material procurement/CNC lathe (4.5mm+) & automatic lathe (Dia:1.5-4.0)/Knurling (for better AN assembly fit)/Heat treatment (hardens material for easier assembly/grinding)
SS: Material procurement/CNC lathe (4.5mm+) & automatic lathe (Dia:1.5-4.0)/Polishing, cleaning

3.Handle
Material: AL/SS
Processing:
AL: Material procurement/CNC machining/Anodizing (UV-resistant; anodizing requires extended processing time)
303 SS: Procurement/CNC/Polishing (degreasing, surface treatment enhancement)/Passivation (adds 48H/72H to delay testing)
Slotted Handle (T/L) Process: Secondary processing—Electrophoresis (salt spray test)

4.External Pin Body
Material: SS/ST(420)/17-4
Processing:
ST/17-4: Material procurement - CNC lathe - Heat treatment - Centerless grinding (ensuring WX diameter dimensions) - Cleaning - Oil coating protection
SS: Material procurement/CNC lathe/Drilling/Centerless grinding/Polishing (degreasing, surface treatment enhancement)/Passivation (adds 48H/72H to delay testing duration)
Selection Key Points: Diameter and support length

5.Thread
Material: SS
Processing: SS (3030/304/316): Procurement/CNC/Polishing (degreasing, surface treatment enhancement)/Passivation (adds 48H/72H to delay testing duration)

6.Spring
Material: 304 stainless steel

7.Optional Lanyard: Trim, then set the length, then press the button.

Selection: Diameter and effective length (center-to-center or not)