The matching bushings cushion the impact and ensure the freedom of movement of the suspension;
The positioning plate spring hanger restricts the lateral displacement of the steel spring and maintains the geometric position of the suspension.
Product features
1. Original factory size tolerance, direct replacement, no need for secondary processing; with lubrication hole design, it can add lubricating grease to reduce dry grinding;
2. Overall quenching + surface hardening treatment, high surface hardness, core maintains toughness, resistant to impact and less prone to fracture;
3. Precision grinding of the outer circle, high surface finish, reduces friction and wear between the surface and the bushing;
4. Suitable for heavy-duty working conditions: mining areas, gravel roads, long-distance standard load / heavy load transportation;
5. Both ends have slots / positioning holes, combined with lock pins for positioning, to prevent the pin from moving out or falling off.
Material
40Cr alloy structural steel
1. Overall quenching and tempering heat treatment, surface high-frequency quenching, hardness HRC 50-56; wear-resistant, shock-resistant;
2. Outer circle precision grinding processing;
3. Surface blackening / rust prevention treatment, rust and corrosion prevention;
4. Grease lubrication holes, convenient for maintenance and grease application.
Solved problems
✅ The steel pin becomes thinner and the gap between the pin and the bushing becomes too large, causing abnormal noise such as "clanging and clicking" when the chassis is under heavy load, turning, or jolting;
✅ The pin is severely worn, the steel hanger shifts, the wheel alignment is off, and the tires are abnormally worn;
✅ The pin is rusted or stuck, the leaf spring cannot freely swing, the suspension is under abnormal force, and the bushing is prone to tearing;
✅ The steel pin undergoes fatigue wear and fracture, causing the leaf spring hanger to fall off, posing a risk to driving safety;
✅ The old pin has no lubrication, the bushing is quickly worn out, and the bushing needs to be replaced frequently.
FAQ
Q: Which truck models does it fit?
A: Fits SHACMAN Delong F3000, M3000, X3000 heavy trucks. It is the hinge pin for leaf spring hanger.
Q: What is the function of this leaf spring pin?
A: It acts as the pivot point of leaf spring assembly. It transfers load between axle and frame, allows leaf spring to flex when driving on bumpy roads, keeps correct position of suspension and restricts lateral movement of leaf spring.
Q: What material is this pin made of?
A: Made of 40Cr alloy steel. Quenched and tempered with surface high-frequency hardening, hardness HRC50~56. Grease hole for lubrication, black anti-rust finish.
Q: What is the difference between original OEM pin and ordinary aftermarket pin?
A: 1.Original: 40Cr alloy steel with full heat treatment, good balance of toughness and wear resistance. Aftermarket often uses plain 45# steel without proper heat treatment, easy to wear and break.
2. Original: Precision ground outer circle with tight tolerance. Cheap aftermarket parts are rough machined with big dimension error.
3. Original: Long service life under heavy load. Low quality aftermarket pins wear quickly and cause suspension safety risk.
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