Auxiliary mounting pads
P109049
Input shafts
Series 45 K2 frame pump is available with a variety of splined, straight keyed, and tapered end shafts. For
information on shafts refer to
Series 45 Axial Piston Open Circuit Pumps Technical Information TIM 520L0519
.
Control options
The Series 45 K2 Frame has two basic control options, a Load Sensing (LS) control with Pressure Compensator (PC) or a PC only control.
Please refer to Series 45 Open Circuit Axial Piston Pumps Technical Information Manual,
520L0519
for more extensive control options.
Operation
General
The bias spring acts at all times to push the swashplate to maximum angle causing the pump to stroke.
The servo piston acts against the bias spring to reduce the swashplate angle causing the pump to de-
stroke. Swashplate angle determines pump outlet flow. The pump control, depending on conditions in
the system circuit, sets swashplate angle by metering system pressure to the servo piston.
Cross-section pump: Bias spring and servo piston set swashplate position
Bias spring
Swashplate
Servo piston
Service Manual
Series 45 Frame K2 Open Circuit Axial Piston Pumps
Features
©
Danfoss | April 2017
AX00000301en-US0101 | 11
