YYQ-2000 Belt Drive Balancing Machine, 2000 kg

The YYQ-2000 is the next step up in capacity in the YYQ belt drive range for shaft-type rotors: it handles rotors up to 2000 kg, with a maximum workpiece diameter of Ø1800 mm. Roller carriage journals run from Ø35 to Ø240 mm and the belt wraps rotor diameters of Ø40–800 mm, so one frame covers large fan hubs and long, slender rollers alike.

Its 160–1780 mm workpiece height range matches the 1000 kg model, so the extra capacity comes from the drive and support arrangement rather than from a taller machine. A 5.5 kW variable-frequency motor turns the heavier rotor at 684 or 986 rpm with a 100 mm driving diameter, and the speed is continuously variable.

Because the belt drives the rotor on its outer diameter, there is no coupling to bolt onto a machined shaft end. Journals, bearing seats and keyways stay as they left the lathe, and a heavy rotor can be loaded, measured and corrected without a coupling alignment step between passes.

Accuracy is stated at ≤1 g·mm/kg minimum achievable residual unbalance with a 90% unbalance reduction ratio — a class matched to heavy impellers and rollers, where the goal is smooth running at service speed rather than sub-gram correction on small parts. Typical work includes large fan impellers, heavy motor rotors, pump rotors and industrial rollers. If you are weighing up dynamic balancing machines by rotor mass, our rotor balancing solutions team can confirm the fit, and the balancing technical guide covers how capacity classes differ.