with gearbox drive
Model system Gruetzner EZ
for oil and emulsion lubrication up to 150bar back pressure
Standard version:
- housing, pump body and crankshaft
bearings are made of cast iron (EN-GJL-250) - suitable for oils and emulsions
- force controlled
- unpressurized visual control
- precisely adjustable
- designed for economical, reliable
continuous operation - drive systems:
rotating, oscillating or motor driven - up to 20 lubrication points
- flow rates up to 0,013 in3 per stroke / line
- up to 2170 psi counter pressure
- includes test certificate according to
DIN EN 10204-3.1
Special versions:
- with Flow-Switch
- with overpressure valve
- with pre lubrication system
- with heating system
- with ATEX realization
The control piston (61) follows the in-stroke of the allocating piston (60) until it reaches the adjustable stop, provided by the carrier (62). Depending on the detent position of the regulation screw (64) a vacuum develops which sucks up oil, indicated by the direction of the arrow, into the cylinder. There will always be more oil sucked up than needed. Excess oil is sent back to ensure a compensation of the flow rate of different viscous oils.
The oil is pumped to the visual flow control (b) where it visibly returns to the control basin (c) of each lubrication outlet and is accessible for flow calibration.
The control basin (c) feeds the pump piston (59a) with oil which is provided over the piston valve (65) to the outlet (52).
After the pump stroke is completed the piston valve (65) is mechanically closed through a lever (23), actuated by a cam (d) on the camshaft (28). Any kind of oil slippage is conducted by relief grooves in the pump piston (59a) and piston valve (65) back into the control basin (c). Therefore, any unregular pump activity is visible.
