Industry Context: Leakage Is Not Only a Seal Problem
In Swedish industrial equipment, automated conveyor lines, and medium-load construction machinery, hydraulic motor leakage is often related to back pressure, oil viscosity, operating temperature, and port configuration. For continuous-duty equipment, motor selection should not only focus on torque. It should also confirm whether the motor is suitable for series or parallel hydraulic circuits and whether an external drain port is required.
The KM1 series uses a compact distributor shaft and gerotor-style stator-rotor design. According to the product PDF, it features a reliable shaft seal design for higher back-pressure conditions and can be used in series or parallel hydraulic systems. It is also positioned for medium-load applications, with multiple shaft, flange, and port configurations.
Selection Focus: Back Pressure, Oil Temperature, and Cleanliness
If shaft-end leakage or shorter seal life occurs in Swedish OEM machinery, the first step is to check whether system back pressure exceeds the recommended working condition. The PDF user guide notes that when back pressure exceeds 5 MPa, an external drain port is recommended. It also specifies a maximum working oil temperature of 80°C, anti-wear hydraulic oil with 37–73 cSt viscosity, and ISO 18/13 fluid cleanliness.
These parameters are essential for selection. In conveyor systems, packaging machinery, or industrial automation units, high oil temperature, contaminated fluid, or excessive back pressure may increase leakage risk even when the motor structure itself is suitable.
Suitable Applications for KM1
The KM1 series covers 50–400 ml/r displacement. Its continuous pressure reaches up to 12.5 MPa, with continuous torque from about 81 to 435 N·m, making it suitable for low-speed, high-torque hydraulic drive systems under medium-load conditions.
For the Swedish market, typical applications include industrial conveyor systems, material handling equipment, auxiliary drives for compact construction machinery, and OEM hydraulic system upgrades where installation space is limited.
Conclusion: Reliability Should Be Parameter-Based
For hydraulic leakage issues in Swedish industrial machinery, KM1 should be evaluated by shaft seal design, back-pressure conditions, oil temperature, viscosity, cleanliness, and port configuration. Selection should be based on measurable parameters, not only product naming.
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