Frequently Asked Questions About Mack CH/CHN/CHU Truck Hub Adapters

Will these hub adapters fit my specific Mack CH model year?

Our hub adapters are designed to fit Mack CH, CHN, and CHU models from 1988 through 2007. However, compatibility can vary based on your specific axle configuration and wheel setup. We recommend checking your current hub bolt pattern and pilot diameter before ordering. Most CH series trucks use either a 10-lug or 8-lug pattern with specific pilot hole measurements. If you're unsure, contact us with your VIN and we can help verify the correct adapter for your truck.

What material are these hub adapters made from, and how thick are they?

Our Mack hub adapters are precision-machined from high-grade steel or aluminum alloy, depending on the specific model you choose. Steel adapters typically range from 1.5 to 2 inches thick and are ideal for heavy-duty applications, while aluminum options are usually 2 to 2.5 inches thick but offer weight savings. Both materials are engineered to handle the stress and load requirements of commercial trucking. The exact thickness varies by application to ensure proper wheel offset and clearance.

Do I need special tools or professional installation for these hub adapters?

While installation is straightforward for experienced mechanics, proper tools and torque specifications are critical for safety. You'll need a torque wrench capable of reaching 450-500 ft-lbs for most applications, and wheel studs must be torqued in a star pattern to manufacturer specifications. The adapters should be installed on a clean, flat hub surface with no rust or debris. We strongly recommend professional installation if you're not experienced with heavy truck wheel assemblies, as improper installation can lead to wheel separation.

Can I run aluminum wheels on my steel wheel Mack CH using these adapters?

Yes, our hub adapters allow you to convert from steel wheels to aluminum wheels on your Mack CH truck. The adapters compensate for the different mounting surface requirements between steel and aluminum wheels. They also correct the offset difference, ensuring proper clearance and maintaining correct track width. Make sure to select adapters specifically designed for steel-to-aluminum conversion, as these have the correct pilot diameter and mounting surface for aluminum wheels.

How do these adapters affect my truck's wheel bearing life and overall handling?

When properly installed with quality adapters, there should be minimal impact on bearing life or handling. Our adapters are hub-centric designs that maintain the load path through the hub rather than the wheel studs, which is critical for bearing longevity. The added thickness does slightly increase leverage on the bearings, but this is within design tolerances for the Mack CH axles. Some drivers report improved stability with wider track width, but ensure your adapters don't cause tire rubbing at full steering lock or under suspension compression.