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2/3.5 Inch 50/90mm welded type King Pin for Heavy Duty Semi Trailers, Trucks and Tractors

20+ years of experiences (since 1999)
Implementing IATF 16949-2016
Implementing ISO 9001-2015
Quality testing by an independent laboratory
Warranty: 18 months since shipping date
Heat Treatment: Through hardened using a quenched and temper process, which produces a surface hardness of 302-363 BHN.
Technical standards: GB/T4606-2006, ISO337:1981, GB/T4607-2006, ISO 4086:2001
Sales volume (units): 120,000+ per year
Raw material: 40Cr
Availability:

Application

Application of king pin


The function of king pin is to engage the semi-trailer to the fifth wheel. The king pin is the most critical component used in the load tranfer from semi-trailer.

The coupling consists of a kingpin, a 2-or-3+1⁄2-inch-diameter (50.8 or 88.9 mm) vertical steel pin protruding from the bottom of the front of the semi-trailer, and a horseshoe-shaped coupling device called a fifth wheel on the rear of the towing vehicle. As the connected truck turns, the downward-facing surface of the semi-trailer (with the kingpin at the center) rotates against the upward-facing surface of the fixed fifth wheel, which does not rotate.

Kingpin adaptor to couple a 2" kingpin on a 3½" fifth wheel

• Ideal for shunting of different semi-trailer tractors

• The D-value of the 2" kingpin remains unchanged

• Important:

The adaptor is suitable for temporary use on private sites only, e.g. on non public park grounds or for short tow runs.

Features

Automotive quality management systemImplementing IATF16949-2016
Quality management system (Services)Implementing ISO9001-2015
Technical standardsGB/T 4606-2006, ISO 337:1981, GB/T4607-2006, ISO 4086:2001, GB/T15088-2009, B/T31883-2015
Warranty18 months since shipping date
Raw material40Cr, a clean low-alloy steel with stable chemical composition
Heat TreatmentThrough hardened using a quenched and temper process, which produces a surface hardness of 302-363 BHN.
StrenghAt the above hardness the material will have an approximate 150,000 p.s.i. ultimate strength and 115,000 p.s.i. yield strength.
Impact and ware resistanceThe high nickel alloy and heat treat process provides a good balance between hardness (wear resistance) and low brittleness (good impact resistance).
Quality assuranceRigid metallurgical cleanliness and quality standards including:
    - 100% Brinell Hardness testing.
    - 100% magnetic particle inspection.
    - 100% ultrasonic testing (MS105, tightened C = 0).
MaintenanceOnce the retention plate is installed the kingpin can be easily replaced in minutes by just removing the mounting bolts. Bolts must be tightened and properly torqued. For safety reasons the bolts should only be tightened and torqued once. If removed they should be replaced.
GreaseHigh efficient special grease is used to ensure good lubrication effect in various working environments and prolong the service life.
Sales volume (units)120,000+ per year
Overseas market30+ countries(Thailand, Austraulia,   Russia, Brazil, Mexico, Malaysia, The Philippines, Singapore, Indonesia, Saudi Arabia, UAE, Iraq, Jordan, South Africa, Nigeria, Tanzania, Cameroon, Gabon, etc.)
Clients (overseas)40+
Land area (square meters)25,000+
Number of equipments (sets)200+
Employees100+
Engineers6
Available certificatesFORM E, FORM A, COC, BV, SGS, SASO


Comprehensive info of king pins:


SeriesMushroom steel forging
Welding
Bolt-in
Size2", 3.5" or 50mm, 90mm
Capacity 2" (50mm) king pin lock
    D-value
20,000 kg Vertical Load
65,000 kg Gross Combination Weight
D-Value 152 kN U-Value 20 Tonne
Capacity 3.5" (90mm) king pin lock
    D-value
30,000 kg Vertical Load
80,000 kg Gross Combination Weight
D-Value 200 kN U-Value 30 Tonne
D-Value(KN)108, 152, 174, 200, 240
Skid Plate   thickness(mm)8, 10, 12, 16
ApplicationHeavy duty semi-trailers, standard duty trucks and tractors, light weight vehicles, multiple road condition
Interchangeable brandsJOST king pins, Fuwa king pins, etc.
ReplacementsJOST type mushroom steel forging KZ-T2, KZ-T3, KZ-T4, KZ-T5
JOST type bolt in KZ 1007, KZ 1008, KZ 1010, KZ 1012,
Fuwa type welded KPEW208, KPEW210, KPAW9010, KPAW9012,
Fuwa type bolt-in KPAB208. KPAB210, KPAB212, KPAB216, KPAB9008, KPAB9010, KPAB9012, KPAB9016
Holland type KZ 108, 117, 119, 491, KZ 600, 601, 602, 630, KZ 052, KZ 604, KZ Type 64, KZ Type 65, KZ 603, KZ 170, 241, 304, KZ 605, 606, 607, KZ Type 63, KZ Type 66, KZ Type 67, Kingpin adaptor 2“ to 3½“
ColorsSilver, black or other color as per requirement
Standards implementedIATF 16949, ISO9001-2015, GB/T 4606, GB/T 4607
Payment termTT, LC, DP
Lead timeAbout 15~25 working days
MOQ20 pcs
SelectionThe D-value and the thickness of the welding plate are two considerations in making a king pin selection for a semi-trailer design. The actual D-value of the selected king pin must be larger than the calculated D-value. Then determine the thickness of the skid plate.
InstallationWelding on a channel support for the 2 inch welding king pin, must be more than 110mm between welds.
OperationOperation of the semi-trailer will cause normal wear on the   king pin, due to abrasion. The following are the limits of wear   allowables:
2" king pin: A≧49mm, B≧71mm 3.5" king pin C≧86mm, D≧112mm


Parameters

King pin (7)

2 inch/50# welded type king pin:

Item   No. King Pin Size D-Value Skid Plate   Thickness Fifth Wheel Size
(mm) (kn) A(mm) (mm)
KPW50-01 50 162 8 50   ( 2" )
KPW50-02 50 162 10 50   ( 2" )
KPW50-03 50 162 12 50   ( 2" )

King pin (8)

3.5 inch/90# welded type king pin:

Item   No. King Pin Size D-Value Skid Plate   Thickness Fifth Wheel Size
(mm) (kn) A(mm) (mm)
KPW90-01 90 240 10 90   ( 3.5" )
KPW90-02 90 240 12 90   ( 3.5" )


King pin (9)


2 inch/50# bolted type king pin:

Item   No. King Pin Size D-Value Skid Plate   Thickness Fifth Wheel Size
(mm) (kn) A(mm) (mm)
KPB50-01 50 240 8 50   ( 2" )
KPB50-02 50 240 10 50   ( 2" )
KPB50-03 50 240 12 50   ( 2" )

King pin (10)

3.5 inch/90# bolted type king pin:

Item   No. King Pin Size D-Value Skid Plate   Thickness Fifth Wheel Size
(mm) (kn) A(mm) (mm)
KPB90-01 90 240 10 90   ( 3.5" )
KPB90-02 90 240 12 90   ( 3.5" )


Production

WONDE king pin typesWONDEE king pin

WONDEE king pin packing

Components

WONDEE king pin and 5th wheel

In addition to supplying different types of semi trailer King pins, WONDEE also Supply different types of semi trailer components as below:

                                         

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Xinhe Industrial Park, Xiamen, Fujian, China 361006

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