Trailer Brake Spider Plate
Built from heavy-duty cast iron and engineered to OEM specifications, our Trailer Brake Spider Plate (Anchor Plate) is a rugged, reliable replacement for worn or damaged brake spiders in commercial trailer axle systems configured with 4707 brake shoes. This plate provides the structural foundation for your trailer’s braking system—supporting brake shoes, anchor pins, S-cam bushings, and more under extreme braking forces.
Our spider plate is designed to extend the lifespan of aging axles with a high-strength, quality solution. Proper installation is critical; misalignment can lead to uneven brake wear and compromised safety. Therefore, utilizing a specialized tool, such as our Trailer Spider Plate Installation Tool, is mandatory to achieve precise alignment and secure attachment.
In stock
| Type: | Trailer Brake Spider Plate (Anchor Plate) |
| Material: | Cast Iron |
| Recommended Fit For: | All trailer axles with 4707 brake shoes |
| Heat Treatment: | No |
| Weight: | 15 lbs |
| Warranty: | 1-Year Limited Warranty |
In stock
Description
The Trailer Brake Spider Plate anchors the entire brake assembly, supporting critical components like the S-cam shaft and 4707-style brake shoes. The 4707 designation refers to a 16.5″ × 7″ brake shoe—one of the most common setups on semi-trailers today—used across axles from manufacturers such as Meritor, Hendrickson, SAF-Holland, and Dexter.
Worn spider plates can compromise brake shoe alignment, leading to uneven wear, poor braking response, and safety risks. Our cast iron replacement spider is built to match OEM specs, and deliver long-term stability and load-bearing performance in even the harshest environments.
Replacing a brake spider plate typically takes about an hour with the right tools—our Trailer Spider Plate Installation Tool, available in our shop, is purpose-built to ensure an exact fit and minimize installation time. Whether you’re restoring an older axle or upgrading for safety, this replacement spider plate brings dependable performance back to your braking system.
Trailer Brake Spider Plate/Anchor Plate (4707) – Frequently Asked Questions
How long does it take to replace a trailer spider plate?
With the proper tools—specifically our Trailer Spider Plate Installation Tool—replacement typically takes about one hour. The tool ensures the spider plate is perfectly aligned during installation, which is essential for maintaining brake integrity, minimizing wear, and avoiding rework.
Is this trailer spider plate compatible with all trailer axles?
Yes, our Trailer Brake Spider Plate is designed for universal fitment with axles that use standard 4707 brake shoes—the most widely used configuration in North American Class 8 trailers. This includes axles from major manufacturers such as Meritor, Hendrickson, SAF-Holland, Dexter, and others. The 4707 system, featuring 16.5″ × 7″ shoes, is the industry benchmark for drum brake assemblies, making our spider plate an ideal replacement across a wide range of commercial semi-trailer fleets.
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