Concrete Batch Plant Spare Parts GEAR REDUCER(ME 132 ES4 GEAR BOX)

This is a genuine ME 132 ES4 gear reducer, built specifically for concrete batching plant applications. You’ll recognize it by the stamped serial number on the housing and the distinct mounting flange pattern. It’s not a universal fit—this one is machined precisely for the drive systems found on mixer platforms and pan mixers.

The casing is heavy-duty cast iron, which handles the vibration of a plant floor much better than fabricated steel. It’s designed to keep contaminants out. We’ve checked the seals on this unit; they are the double-lip type, so you won’t see oil weeping down the side of the housing after a few shifts.

Inside, it’s running hardened helical gears. They are cut for quiet operation and high torque at low speeds, which is exactly what you need when turning a loaded mixer drum. You don't want sudden shock loads wearing out the teeth, and this ES4 series is known for absorbing that start-stop stress well.

This particular unit is a service exchange that has been fully inspected. The bearings spin smoothly with no detectable play, and the gear mesh pattern is consistent across the rotation. It’s been flushed of old oil and primed with a rust-preventative coating, ready to be fitted.

If you are swapping this out, keep your original coupling half if it’s in good shape—this gearbox uses the same spline dimensions as the standard ME series. Just remember to check the input shaft rotation direction before you bolt it up to the motor mount.