Products Description
Rexroth 109-0785-4B14-09 Spare Part

Technical Specifications
Model:109-0785-4B14-09
Brand:Rexroth
Product type:Hydraulic gear pump cartridge
Power supply:No external power supply,driven by prime mover
Control function:Hydraulic oil delivery,fluid volume output,mechanical pressure bearing
Communication:No digital bus
Mounting:Inserted inside pump housing
Operating temperature:-20~80℃
Storage temperature:-25~85℃
Relative humidity:5~95% non-condensing
Max working altitude:2000m
Weight:0.86kg
Dimension:128mm72mm68mm
Certification:CE
Protection class:IP65
System compatibility
109-0785-4B14-09 belongs to Rexroth hydraulic gear pump series,matched with pump housing,shaft seal and hydraulic power unit.Widely applied in press equipment,automation assembly and material handling hydraulic stations.This is a discontinued legacy spare part for equipment maintenance replacement.
Function
109-0785-4B14-09 is Rexroth internal gear pump cartridge.It forms the core pumping assembly of gear pump,delivers hydraulic oil from suction port to pressure outlet.It provides stable flow for downstream hydraulic actuators under rated working pressure.It maintains volumetric efficiency during continuous operation.It acts as hydraulic power generating core component of hydraulic pump.
Installation
Insert 109-0785-4B14-09 into pump housing,align shaft and positioning pin.Install sealing components and tighten end cover bolts.Check oil circuit cleanliness and seal integrity before commissioning.
Interface
‑Driving shaft connection end
‑Suction oil passage matching port
‑Pressure oil passage matching port
‑Positioning pin hole
Circuit feature
Precision gear pair machining,low internal leakage design,stable flow output under industrial hydraulic working environment.
Feature
109-0785-4B14-09 is obsolete Rexroth spare part.Typical faults:flow insufficient,pressure drop,internal leakage,gear wear and noise.Inspect gear surface and sealing parts before replacement.This cartridge must match corresponding pump housing and working pressure,direct substitution without inspection is not recommended.
Diagnostic
When gear abrasion,seal failure or contamination jam occurs,the system will report hydraulic pressure and flow abnormal alarm.
Built‑in function:Hydraulic oil suction and delivery,continuous fluid power output,used as hydraulic pump system spare replacement.
Product Brief
109-0785-4B14-09 is Rexroth old gear pump cartridge for hydraulic power station.Confirm working pressure and hydraulic oil medium before ordering.ESD protection required during handling and installation.