Type: Slew Lock Pin
Features: Pin with flange, includes safety lanyard
Length: 175 mm
Diameter: 40 mm
Product Description:
The 125/81200 pin is a manual locking device for the boom rotation mechanism in JCB 3CX and 4CX backhoe loaders. It is inserted into dedicated holes in the kingpost and slew frame to secure the boom in a central position. This pin is essential during road transport and when using certain attachments, such as hydraulic breakers, to prevent uncontrolled boom rotation.
Role in the Machine & Fault Diagnosis:
⚠️ Safety Warning:
Never attempt to rotate the backhoe arm while the 125/81200 lock pin is inserted. Doing so may shear the pin, damage the kingpost or slew cylinder. Always ensure the pin is removed and safely secured on the lanyard before operating the machine.
Application in machinery
|
Brand
|
Type / Series / Model
|
|
JCB |
Backhoe Loaders: 3CX, 4CX |
The list above is for reference. It is crucial to verify the dimensions (40 x 175 mm) in your machine.
Data sheet
Specific References
Manufacturer
Responsible person






The 125/81200 pin is a manual locking device for the boom rotation mechanism in JCB 3CX and 4CX backhoe loaders. It is inserted into dedicated holes in the kingpost and slew frame to secure the boom in a central position. This pin is essential during road transport and when using certain attachments, such as hydraulic breakers, to prevent uncontrolled boom rotation.

















