302-6338 3026338 Wear Strip 12mm Thick,Fits For Motor Graders 140M 120M,160M

1. Quick Details of  seal 302-6338:

2.302-6338 picture:

3. Service part number :

 
4. FAQ

Q: How do I install this piston guide pad correctly?
A: Start by cleaning the piston and the mounting groove thoroughly to remove all dirt, oil, or debris. Inspect the groove for scratches, burrs, or damage that could affect fit. Lightly lubricate the pad and groove with clean hydraulic oil. Align the pad with the mounting holes or locating features on the piston, then press it firmly into place to ensure it sits flush and secure. When inserting the piston into the cylinder bore, use a tapered assembly sleeve to protect the pad from catching on the bore edge.

Q: what's the function of the Wear Strip ,like the part no. of 302-6338 ?

A: Its main function is to act as a sacrificial barrier that protects the major structural components of the grader's blade-turning mechanism from friction, abrasion, and structural damage.

Here are the details of it's fuction :

• Reduces Friction and Controls TolerancesThe motor grader's "circle" is the large rotating ring that allows the blade (moldboard) to angle left and right, while the "drawbar" connects this rotating circle to the front of the machine. As the circle rotates under heavy load, the 302-6338 wear strip provides a smooth, low-friction sliding surface. This ensures fluid movement and precise blade control for fine grading.
• Protects Expensive Structures (Sacrificial Barrier)Metal rubbing directly against metal will quickly gall, gouge, and destroy the main frame of the drawbar or circle. This wear strip is deliberately made out of a softer, durable heat-stabilized nylon (molded plastic). It is designed to wear down slowly over time so that the expensive steel structures of your machine don’t have to.
• Absorbs Shock LoadsWhen the grader blade strikes a hard object—like a hidden rock, root, or frozen ground—immense stress is transferred through the circle and drawbar. The non-metallic, nylon composition of this strip helps dampen and absorb these heavy shock loads, preventing the steel components from cracking or warping.

Q: How long does this piston guide pad typically last?
A: With clean hydraulic fluid, proper alignment, and correct installation, a polymer guide pad can last 5,000–10,000 operating hours. Contaminated oil or excessive side loads will significantly shorten its lifespan.

5. Exhibition and Wearhous

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