Kingpin is a main part that bears force in semi-trailer. The function is to link semi-trailer and truck by kingpin seat, then the trailer run by the draft vehicle.

HJ type bolt is made of alloy material, which has the capability of high intensity, well stretch & bend intensity. The Bolts screw down torque is 190Nm, the performance grade is 10.9.

How to choose Kingpin:

You should consider two aspects when choose. 1. Draft force(F); 2.Skid plate thickness. 

The Kingpin intensity value must be more than count draft value.

According to your setting plate thickness and then confirm the skid plate thickness according to plate thickness. 

Allow abrasion mete:

2" Kingpin dia.50.8>=49mm / dia.73>=71mm; 

3.5" Kingpin dia.88.9>=86mm / dia.114>=112mm; 

After fray value less than the value, you should change kingpin in time.

1. One of the biggest semi-trailer spare parts manufacturer in Asia

Huajing covers an area of 250,000 square meters, has more than 850 staffs and elites. The annual production capacity can reach: 200,000pcs of trailer axle, 200,000sets of bogie and suspension, 1,000,000sets of brake shoes. Product contains full semi-trailer production series Germany and American Type Trailer Axle, Axle Beam, Brake Shoes Assembly, Mechanical Suspension, Air Suspension, Bogie Suspension, Landing Gear, Hub, Brake Drum and other spare parts.

2. High quality products

Huajing comes with more than 300 automatic equipments, including advanced CNC machine center, oil extrusion machine for 40T-800T, oil shearer, highly precision welding robot, auto double guns welding machine, and fully auto extrusion line etc., which result in the top automatic production line in the industry. The key parts are under controlled with the PLC equipment according to the international standards to ensure stable quality and high interchangeability. Currently, our products have got international standard TS16949 certificate and ISO9001:2002 certificate.

3. Strict quality control

Huajing aims to make sure 100% of products are up to standard. It owns the independent testing center, comes with fatigue test, salt spray test, metallurgical analysis and 3 coordinates test etc., to make sure every procedure is under strict quality control from raw material to finished product. Huajing always bears the faith of "without quality without competitiveness" in mind.

4. Products are popular all around the world

With more than 10 years of development and innovation, Huajing has become the top trailer axle manufacturer in domestic market and our products are popular all around the world. From China to Europe and the Middle-East, as well as Africa and South America, there are over 60 countries and regions in the world use Huajing products.

Stamping Product Production Line

The usage of forging technology improves products wear-resisting and load capacity.

Testing
Huajing aims to make sure 100% of products are up to standard.

TS16949 Certificate and ISO9001:2002 Certificate.

Huajing semi-trailer spare parts which combines with Chinese and foreign advanced technique and experience, was designed according to the customer's requirement and the loading and road situation. Huajing do believe that Huajing products can satisfy every customer's interest and demand.

-Our company holds the notion all the time that "first-class goods, reasonable price, perfect after-service";

-We always think of your demand ahead of time and never ignore every bit demand of clients during the service;

-Let our sincereness and specialized technique be always with you! Thank you!!