Shandong Shengyue Technology Development Co.,Ltd is one of the most professional φ50 / φ90 saddle wear plate manufacturers and suppliers in China. Please feel free to buy high quality genuine auto parts at competitive price from our factory.
φ50 / φ90 Saddle Wear Plate
FUNCTION
1. Friction Reduction and Protection: Acting as a buffer layer between the semi-trailer's friction plate and the fifth wheel, it prevents direct metal-to-metal contact that could lead to damage.
2. Lubrication-Free Design: Modern wear plates are typically constructed from high-molecular-weight polyethylene or nylon materials; possessing self-lubricating properties, they eliminate the hassle of applying grease and help keep the vehicle body clean.
3. Vibration Damping and Noise Reduction: They absorb vibrations generated during transit, ensuring a smoother connection between the trailer and the tractor.
Installation Locations
1. Lower Layer: The top plate of the fifth wheel. The wear plate must sit flush within the recessed groove or flat surface of the top plate.
2. Upper Layer: The skid plate (friction plate) of the semi-trailer's kingpin assembly. Once the trailer is coupled to the tractor unit, the trailer's skid plate rests directly upon the wear plate, sliding and rotating against it.
3. Axial Positioning: The wear plate is typically secured to the perimeter of the fifth wheel using several countersunk bolts (commonly eight), ensuring that the plate remains firmly in place and does not shift during the trailer's turning maneuvers.
Technical Specifications for Fifth Wheel Wear Plates
| Parameter | φ50 (2") Specification | φ90 (3.5") Specification |
|---|---|---|
| Center Hole Diameter | ~72mm (Clearance for kingpin boss) | ~110mm (Clearance for kingpin boss) |
| Outer Diameter / Dimensions | Typically 800mm - 1000mm (Circular/Horselace) | 1000mm - 1200mm (Larger for heavy-duty) |
| Operating Temperature | -40°C to +80°C | -40°C to +80°C |
| Static Load Capacity | 20t - 36t | 40t - 100t+ |
| Coefficient of Friction | ≤ 0.15 (Non-lubricated state) | ≤ 0.15 (Non-lubricated state) |
DETAILS
| DESCRIPTION | Saddle Wear Plate | PART NUMBER | P608677 + P625822 |
| WEIGHT |
3.5 kg |
VOLUME | 800mm - 1000mm |
| TRUCK MOLDE | SINOTRUK | QUALITY | Copy,High Copy, OEM,Original |
| MOQ | 1 | WARRANTY | 1 year |
| PAYMENT | TT/WESTEN UNION | SHIPMENT | by air/sea/railway |
| BRAND | SINOSACHS | PLACE OF ORIGIN | JINAN CITY,CHINA |
| STOCK | IN STOCK | APPLICABLE SITE | CABIN |
| PACKAGE | Carton/Woodenbox | PORT OF LANDING | Qingdao Port,China |
Maintenance & Replacement Recommendations
1. Thickness Wear: The wear plate must be replaced when 3–4 mm of its original thickness has worn away, or when the heads of the underlying mounting bolts become exposed.
2. Surface Cracking: If extensive surface cracking or edge chipping is observed on the plate, the flatness of the mounting interface will be compromised.
3. Abnormal Mounting Noise: If a distinct "clicking" sound-indicative of direct metal-to-metal contact-is heard while turning or traversing uneven terrain, it suggests that the wear plate may have failed.
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