PHM Mobile Honing Machine for bore diameter up to 640mm

Capacity:

Honing diameter up to 640mm

Features:

The PHM is a sturdy and solid mobile machine protected by a strongly adhering color layer. Rotary motion and linear stroke motion of the honing head are infinitely variable through simple pressure regulation of the air supply to obtain the desired crosshatch surface pattern. Stone feed pressure is also infinitely variable through regulation of air supply to the stone feeding actuators.When air supply to the stone feeding actuators is shut off, the spring based stone holders are pivoting inwards so that vertical scratches in the cylinder liner wall can be avoided when the honing head is inserted into or removed from the cylinder liner bore.
The powerfull air motor permits adjustment of the rotation speed of the honing head within a broad range by the mere turn of a control knob without changing any gear boxes. The central control panel is equipped with regulator valves combined with manometer gauges for selecting the RPM of the honing head, the stroking rate and the stone contact pressure. Thus, the pressure settings which once proved as resulting in perfect surface finish, can be repeated time and again.

Only three honing heads are required for cylinder linerbores from 150 to 640 mm diameter.

1. Head type 150-250 mm for honing diam. 150-250 mm.
2. Head type 240-340 mm for honing diam. 240-340 mm.
3. Head type 320-640 mm for honing diam. 320-640 mm.

Each honing head can be easily set to the required honing diameter by inserting spacers between the central shaft and the stone holder units.

Automatic stroking is a standard feature. The stroking lenght can be infinitely adjusted by means of end stops.

An comfort control panel including the regulator valves and the manometer gauges is at the lower end of the preassembled drive unit within easy reach of the operator while standing at cylinder liner level.

A single central air treatment unit with air filter and lubricator is also provided for trouble free operation.

Setting up the PHM for honing requires only three simple steps:

1. Sliding mounting tubes over two opposite studs at the engine block.
2. Placing the preassembled drive unit onto the mounting tubes.
3. Attaching the honing head to the air motor of the drive unit.

Specifications: