JX-21QJG302-D22-D36-8.3-ST, Automotive mechanical parts for automotive electrical instrument parts, surface treatment zinc-nickel alloy

Technical requirements: 1.Material DIN EN 10277-3 11SMnPb30+C And surface GS 90010-1 ZNNIV SI2.Riveting depth: 4.5?.3mm, Aperture of riveted plate: p24013 Unmarked tolerance: ?3j4.Pull-out force>5kN.Cylinder rocker shaft torque (the role of engine valve rocker shaft)

1. The role of the engine valve rocker shaft

The rocker arm seat is a part of the intake and exhaust mechanism in an overhead valve engine. The intake and exhaust mechanism is composed of the camshaft, tappet, rocker arm, rocker arm shaft, rocker arm seat, valve, valve spring, and other parts. The opening and closing of the valve are done by the tappet and rocker arm. The rocker's arm is mounted on the rocker arm seat by the rocker arm shaft, one end is driven by the tappet from the camshaft, the other end is on the valve stem and the spring acts together to control the opening and closing of the valve.

2. What is the role of the valve rocker arm shaft?

The function of the rocker's arm is to transfer the motion and force from the push rod and cam to the valve to make it open. The rocker's arm is subjected to a large bending moment during the swinging process, so it should have sufficient strength and stiffness as well as a small mass. The rocker's arm is made of forged steel, a malleable ball, ductile iron, or aluminum alloy. The rocker's arm is a two-armed lever with the rocker arm shaft as the pivot point and two arms of unequal length. The short arm end is machined with a threaded hole for screwing in the valve lash adjustment screw. The long arms end is machined into a rounded surface, which is the working surface for pushing the valve.

11SMnPb30 German standard implementation standard DIN EN 10087-1999 Hot-rolled bar and wire delivery technical conditions, 11SMnPb30 is a free-cutting structural steel, which is easy to be cut by (turning, milling, drawing, planing, drilling, etc.), also known as Steel for automatic machine tool processing, referred to as automatic steel. It is produced to adapt to mechanical processing automation and assembly line production. This type of steel can be cut with a higher cutting speed and a deeper cutting amount, and the cutting resistance is reduced due to the easy-cutting elements added to the steel, and the cutting edge is lubricated due to the characteristics of the added element itself and the compound formed. The role of the part makes the chips easy to break and reduces wear, thereby improving the finish and precision of the processed parts, and improving the tool life and production efficiency.

Packing: Inner is Poly foam, out is carton. Then pallet. Carton size: 29*19*19.5CM and 23.5*17.5*8, CM and pallet size is: 215*100*90CM, or as your requirement.

Packaging & Delivery and Packaging Details

1. Shrink film+wooden box

2. Cardboard box+pallet

3. Color box

4. As per the customer's request