Tractor Centre Pin

Product Details

 🚜 Tractor Centre Pin – Full Details 1. What is a Centre Pin?The "centre pin" is a heavy-duty vertical pin used in *2WD tractors* (and  some articulated tractors). It connects the *front axle assembly* to the *tractor chassis*, allowing   the front axle to *pivot up and down*. 2. Main Function  The centre pin allows: * Front axle *oscillation (rocking movement)* * Both front wheels to *stay in contact with the ground* * Better *stability and balance* on uneven land * Reduced stress on the tractor frame  Without a centre pin, the tractor would lose traction and stability on            rough fields.  3. Location  * Mounted *at the center of the front axle*  * Passes through:  * Front axle support (axle beam)  * Tractor chassis / engine frame  * Positioned *vertically*  4. Construction & Material  * Made from *high-carbon steel or alloy steel*  * Hardened and *heat-treated* for strength  * Precision-machined surface for smooth rotation  Often used with:  1.Bushes (bronze or steel).  2.Thrust washers.  3.Grease grooves.  5. Parts Associated with Centre Pin  * Centre pin  * Upper and lower *bushes*  * Thrust washer  * Lock plate or lock nut  * Grease nipple (zerk fitting)  * Dust seals (in some models)  6. Working Principle   * The centre pin remains fixed in the chassis  * The *front axle pivots around the pin*  * Movement is limited to prevent excessive tilting  * Grease reduces friction and wear 7. Load Handling The centre pin carries: * Front axle weight * Engine front load * Shock loads from bumps and uneven ground  That's why it must be *very strong and well-lubricated*.  8. Lubrication  * Lubricated through *grease nipple*  * Regular greasing is *very important*  * Prevents:  * Excessive wear  * Seizing  * Noise and vibration  9. Common Problems & Wear Symptoms* Front axle looseness* Knocking or clunking noise* Uneven tire wear* Steering instability* Excessive axle play#Usually caused by:* Worn bushes* Lack of lubrication* Bent or worn centre pin10. Maintenance Tips* Grease every *50–100 working hours** Check for play during service* Replace bushes before pin gets damaged* Use *OEM or high-quality pin* 11. Replacement Signs  Replace the centre pin if: * Pin diameter is worn * Deep scoring or cracks appear * Axle movement exceeds limit 12. Used In Common in tractors like: * Massey Ferguson * Mahindra * Swaraj * John Deere (2WD) * Sonalika * New Holland  If you want, I can also provide:* Diagram explanation 🧩* Centre pin vs king pin comparison* Interview / exam answer* Tractor-specific centre pin detailsJust tell me 👍