"The customer wanted to put an oil groove
on the bearing cap but we didn't want to permanently modify the pattern," Loerwald said.
We significantly reduced the gas leakage between the piston-cylinder bores with the oil groove
An inclined oil groove
is made along the shaft's outer surface from the exit of the oil-feeding hole (Figure 2a) to a cavity (Figure 2a) located just beneath the thrust bearing.
bushings are used with shafting as bearings.
And they have since each produced 19 million pistons, with a piston coming off the line every 12 seconds and accuracies of three microns maintained in the oil grooves
For these new pillars, Hasco developed the S14W self-lubricating guide bushings, which eliminate oil grooves
, and the Z13 linear ball-bearing bushings.
Typical applications include drilling piston ports in a hydraulic motor, drilling bleeder holes in door closers, milling keyways and oil grooves
in bushings, and drilling air holes in vacuum molds.
A fiber optic light source illuminates the part; a wide-angle lens captures a "flattened" image of the inside of the part wall; it provides the processing software with a circular ring pattern showing the inside diameter, end features, and internal features (e.g., end slots, oil holes, internal oil grooves
, and embossing).