Up for sale is one pair of Centramatic Auto Wheel balancer P/N 600-640 for Heavy Duty Trucks with 22.5" Super Single rims on Drive Axles with an 11.25" 10hole bolt pattern.

Centramatic Wheel Balancers (Pair) – P/N: 600-640

For Heavy Duty Trucks | 22.5" Super Single Rims | Drive Axles

Upgrade your ride and protect your tire investment with the industry-leading Centramatic On-Board Wheel Balancers. Specifically designed for heavy-duty applications, these balancers use centrifugal force to provide a continuous, "on-the-go" balance for your entire wheel assembly.

Product Specifications

• Part Number: 600-640

• Fitment: Drive Axles

• Rim Size: 22.5" Super Single Rims

• Bolt Pattern: 10-Hole, 11.25" Pattern

• Warranty: 5-Year Unlimited Mile Factory Warranty

Why Choose Centramatic?

Centramatic balancers don't just balance the tire—they balance the entire assembly (wheel, tire, drum, and hub).

• Smoother Ride: Drastically reduces vibration and driver fatigue.

• Extended Tire Life: Increases tire usable life by 25% to 50%.

• Lower Operating Temps: Reduces tire heat by 8% to 10%, preventing blowouts.

• Prevent Tire Cupping: Helps "true out" slight cupping and prevents new wear patterns.

• No Pre-Balancing Needed: Automatically adjusts as you drive.

How It Works: The Technology

Inside the sealed aluminum ring is a proprietary balancing media consisting of:

1. Durametal: A hardened alloy shot 10x harder than standard steel.

2. Synthetic Fluid: A specialized oil that dampens vibration and ensures the media moves smoothly.

As the wheel spins, centrifugal force moves these weights to the exact point opposite the heavy spot, putting the assembly in perfect equilibrium. Unlike lead weights, Centramatic adjusts to mud, snow, or ice stuck to your wheels in real-time.

Frequently Asked Questions

How are they installed?

Installation is simple. Remove the wheel, slide the balancer over the studs using the bolt holes as a guide, and reinstall the wheel. For these drive axle models, the balancer mounts between the dual wheels.

At what speed do they start working?

Most models engage at 20–22 mph. This ensures your wheels are balanced long before you reach highway speeds where vibration usually occurs (35+ mph).

How long do they last?

Centramatic balancers are built for the long haul. Units have been documented with over 1.4 million miles still in working condition.

Can they fix a mis-mounted tire?

No. If a tire is improperly seated on the bead, it will roll "out of round." Check the guide rib on your tire sidewall to ensure it is even all the way around. Proper seating is required for any balancer to be effective.

Manufacturer Warranty

F & F Industries (DBA Centramatic) warrants these balancers to be free from defects in material and workmanship for five years from the date of purchase.

• Coverage: Defects in materials and workmanship.

• Exclusions: Damage from misuse, abrasion, corrosion, faulty installation, or accidents.

• Note: Returns require a Return Authorization Number directly from Centramatic.

Note: Proper alignment is still required for maximum tire life. Centramatics balance the assembly but cannot correct mechanical alignment issues.