Sauer Danfoss series 45 ER Hydraulic pump Parts

The Sauer-Danfoss Series 45 ER is a family of variable-displacement, axial piston pumps designed for open-circuit mobile hydraulic systems. Key parts and assemblies include:

1. Rotating Group: The core pumping mechanism consists of a cylinder barrel with piston bores, pistons with slipper pads, and a swashplate. The swashplate angle determines piston stroke and pump displacement.

2. Control System: The defining feature of the 45 ER series is its Electrohydraulic Remote (ER) displacement control. This system replaces mechanical levers with an integrated electrohydraulic proportional valve. It receives an electrical signal (such as 12/24V DC) from a joystick or controller and precisely adjusts the swashplate angle via a servo piston, enabling accurate flow and pressure control.

3. Housing and Porting: A robust cast-iron main housing contains the rotating group and control elements. It features high- and low-pressure ports (typically labeled "A" and "B") for system connection, a case drain port, and a feed (suction) port.

4. Shaft and Seals: A splined input shaft transmits power from the prime mover. Multiple shaft seals, including a main rotary seal and gaskets, ensure internal fluid containment.

5. Valve Plate: A stationary component mounted between the cylinder barrel and the housing porting. It contains kidney-shaped ports that facilitate the transition of fluid between the piston bores and the system ports during rotation.

6. Charge Pump (Optional): Many models include an integrated gerotor-type charge pump. It supplies pressurized oil to the control servo, ensures piston shoe lubrication, and maintains inlet feed pressure, which is crucial for high-speed operation.

Key Characteristics: The 45 ER pump is recognized for its compact design, high power density, and rapid response. The ER control enables flexible, wire-based machine control, simplifying installation and supporting advanced functions such as electronic load sensing (EPC) when used with compatible valves. It is widely used in material handlers, telehandlers, and other mobile equipment that require precise hydraulic power.

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Parts list

Q1: Besides the main rotating group, what other pump part is critical for managing fluid flow into and out of the piston bores?

A1: The valve plate is the critical stationary part for fluid management. It is located between the rotating cylinder barrel and the pump housing's porting. Its kidney-shaped ports precisely align with the piston bores during rotation, allowing hydraulic fluid to be drawn in from the low-pressure side and expelled to the high-pressure port.

Q2:How to purchase the Series 45 ER Hydraulic pump Parts?

A2:You can visit https://www.baolilaihydraulic.com/contact/ to contact us and purchase our products through various methods.

Q3:What is the price and delivery time of the Series 45 ER Hydraulic pump Parts?

A3:The specific price and delivery time will be provided based on the specific model you provide.A variety of hydraulic solutions are available at https://www.baolilaihydraulic.com/.