Built for the Automotive Machine Shop

The ProBal PB-L500 is an advanced crankshaft balancing machine designed for automotive machine shops that need precision, speed, and ease of use. The touchscreen interface walks your operators through the entire balancing process - from bobweight calculation to measurement - without requiring specialized training.

With 3-second measurement spins and the ability to detect imbalances with high precision, the PB-L500 makes crankshaft balancing a routine operation rather than a specialized skill. Whether you're balancing crankshafts for performance builds, production rebuilds, or heavy-duty diesel applications, the PB-L500 adapts to your work.

The modular design means the machine evolves with your shop. Add capabilities as your needs grow, without replacing the entire system.

What's Included

22" touchscreen display
Windows-based operating system
ProBal DBS balancing software
Overhead drive system
Built-in bobweight calculator
Proving rotor for calibration
Heavy metal inventory system
Linear guideway bearing system
Modular tooling package
Complete operator training

Key Features

ProBal PB-L500 precision measurement display showing 2-plane crankshaft balance readings

Precision Measurement

The PB-L500 completes measurement spins in just 3 seconds, delivering high-accuracy imbalance detection on every cycle. The system identifies both the amount and angular position of imbalance, giving your operators clear correction targets without guesswork. This speed and accuracy makes crankshaft balancing a production operation, not a bottleneck.

ProBal crankshaft balancer calibration setup with proving rotor

Linear Guideway Technology

ProBal's linear guideway bearing system provides smooth, friction-free movement of the measurement carriages. This advanced bearing technology eliminates the mechanical noise that can affect readings on older machines, resulting in more consistent and repeatable measurements across every spin. The system maintains its calibration accuracy over years of production use.

ProBal PB-L500 overhead drive system for crankshaft balancing

Exclusive Drive System

The overhead drive design is unique to ProBal balancing machines. By driving the workpiece from above rather than from the side or below, the system eliminates belt-induced vibrations that can compromise measurement accuracy. The result is cleaner data and more reliable balance corrections, especially on lighter crankshafts where small imbalances matter most.

ProBal proving rotor and crankshaft balancing examples

Proving Rotor

Every PB-L500 ships with a proving rotor for calibration verification. Before starting a production run, operators can verify the machine's accuracy in under a minute using the included rotor with known imbalance values. This gives your shop confidence that every crankshaft balanced on the machine meets your quality standards.