Danfoss | 11418156
11418156
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The 11418156 pump belongs to the Open Circuit Piston Pumps series manufactured by Danfoss for hydraulic automation systems that require controlled, variable oil delivery. A displacement of 25 cc per revolution defines the volume moved with each shaft turn, while a proportional pressure-decreasing control function trims the swashplate angle as line pressure climbs. This controller operates from a 24 VDC supply taken from the machine’s electrical system. An internal pressure compensator fixed at 260 bar prevents over-pressurization of downstream components. Counter-clockwise shaft rotation matches left-hand power take-offs, and an SAE-B two-bolt mounting flange aligns the housing with standard engines or gearboxes.
A 4-bolt split-flange inlet port sized at 1.25 in and secured by M10 hardware lets a low-resistance suction line feed the pump; the outlet port mirrors the flange style in a 1.00 in format to channel pressurized flow back to the circuit. Dynamic response is governed by a 1.2 mm gain orifice that sets the rate of swashplate movement, and a 0.8 mm choke orifice that damps oscillations to keep pressure stable. Sealing of the drive end is handled by a single Viton shaft seal that tolerates high temperature and hydraulic fluid exposure, reducing the risk of leakage during extended operation.
Technical Specifications
Choke Orifice
0.8 mm
Control Function
Proportional Pressure Decreasing
Control Voltage
24 VDC
Displacement
25 cc/rev
Gain Orifice
1.2 mm
Inlet Port
4-Bolt Split Flange, 1.25 In, M10
Mounting Flange
SAE-B 2-Bolt Flange
Outlet Port
4-Bolt Split Flange, 1.00 In, M10
Pressure Compensator Setting
260 bar
Rotation
Counter-Clockwise
Shaft Seal
Single Viton Shaft Seal
1620 Old Apex Road
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