KSD Series Hydraulic Swing Motor | 160–305 cc Displacement | Reinforced Bearings & Integrated Valve

KSD Series Hydraulic Swing Motor

1. Reinforced Bearings and Structural Design

The KSD Series Hydraulic Swing Motor is based on the KMS motor design, with structural enhancements for swing-drive applications. Reinforced bearings are designed to withstand greater radial forces, while reinforced couplings accommodate more demanding operating conditions.

An integrated inlet relief valve significantly reduces decompression noise, and an integrated oil charge valve helps prevent air from entering the motor during operation. These design features make the KSD series a candidate for equipment manufacturers evaluating radial-load capacity, operating noise, and hydraulic circuit compatibility.

2. Multiple Displacements and Output Torque Selection

The KSD series is available in four displacement options: 160, 195, 245, and 305 cc. All four models have a maximum speed of 80 RPM, with corresponding output torque ratings of 305, 388, 506, and 678 N·m.

During selection, consider the required output torque, operating speed, and load conditions, then verify the hydraulic system pressure and relief valve settings. Larger-displacement models have higher listed output torque ratings, but final selection should be validated against actual operating pressure, flow, and load requirements.

3. Shaft Interface and Hydraulic System Compatibility

The KSD series offers different shaft-end gear configurations, covering modules 4, 4.5, and 5, with a gear pressure angle of 20°. Before ordering, verify the gear tooth count, shaft dimensions, installation space, and drive interface to avoid unnecessary mechanical modifications.

For hydraulic system compatibility, the manufacturer recommends ISO VG 46 anti-wear hydraulic oil, a viscosity range of 20–43 cSt, a maximum operating oil temperature of 80°C, and oil cleanliness of ISO 18/13. The recommended filtration accuracy is 10 microns. Appropriate oil maintenance helps maintain normal hydraulic component operation.

4. KSD Brake Series and Purchasing Recommendations

For applications requiring a braking configuration, the KSD Brake Series is also available for evaluation. The catalogue lists displacement options of 160–305 cc, a maximum speed of 80 RPM, and output torque ratings of 305–678 N·m. It also specifies brake-series parameters of 14–14.5 MPa brake valve pressure, 550–600 N·m braking torque, and 23 bar starting pressure. Confirm the applicable specifications against the technical documentation for the exact model and configuration.

For a more accurate selection recommendation, provide the equipment type, required output torque, operating pressure, shaft and mounting interface details, and whether a braking function is required. These details will help identify a suitable KSD model and configuration.