Features	Charlynn 2000 Swing Motor
Product	Gerotor Hydraulic Motors
Gerotor Hydraulic Motors	2.5K-250-A-A-A
Size	250 Ml/r
250 Ml/r	110mm
Shaft	11T
Rotation	Left And Right
Port	G3/8 With Relief Valve
G3/8 With Relief Valve	Mini Excavators char lynn hydraulic motor, Balance Valve char lynn hydraulic motor, charlynn motor With Shaft Gear

This product is model 2.5K-245 in the Charlynn® series, a highly integrated hydraulic swing motor assembly. It is not just a hydraulic motor, but a complete swing drive module, which core includes Charlynn's high-performance gerotor motor, planetary gear reducer (Shaft Gear), as well as an integrated overload make-up valve and anti-cavitation balance valve (Balance Valve).

This assembly is specifically designed for the swing mechanisms of construction machinery such as small and medium-sized excavators, cranes, aerial work platforms, and drilling rigs. It aims to convert hydraulic energy into precise and controllable rotational motion, and is the core power component for achieving smooth, reliable, and safe swing of the upper structure (upper carriage) of the equipment.

Core values: It provides high torque output, realizes stepless speed regulation and smooth start-stop, and effectively prevents start-up impact, parking swing, and cavitation damage through the built-in balance valve, significantly improving the equipment's operational performance, safety, and reliability.

1. Charlynn Cycloidal Hydraulic Motor
• High Efficiency and Reliability: Adopting the time-tested Charlynn cycloidal profile design, it provides high power density and excellent starting torque, ensuring smooth operation even at low speeds and precise slewing positioning.
• Strong Durability: Robust bearings and hardened core components ensure a long service life and resistance to impact loads.
2. Planetary Gear Reducer
• High Torque Output: Converts the high-speed, low-torque output of the motor into low-speed, high-torque, directly driving the slewing ring gear. The optimized reduction ratio provides sufficient rotational force.
• Compact Structure: The planetary gear structure is compact and highly integrated with the motor housing, saving installation space and achieving high transmission efficiency.
• High Rigidity: The robust gear design can withstand complex radial and axial loads.
3. Integrated Counterbalance Valve (Key Feature)
• Smooth Control: The counterbalance valve is the "safety brain" of the slewing system. It can precisely control the acceleration and deceleration during the start and stop of slewing, eliminating severe impacts and "nodding" phenomena caused by sudden stops.
• Prevention of Cavitation: During slewing braking, the counterbalance valve can replenish oil to the closed oil circuit, preventing cavitation caused by the motor sucking in air, thereby protecting the internal parts of the motor from damage.
• Safe Braking: Provides stable hydraulic braking holding force, ensuring that the upper vehicle does not slip accidentally on slopes or when subjected to external forces, thus guaranteeing operational safety.
• Resistance to Flow Impact: Buffers sudden flow changes from the main control valve, making the slewing action more gentle and controllable.

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