Product Overview
The KYB MSG-27P-10E-22 / 8G250-21074 is a high-torque hydraulic swing motor engineered by KYB, a globally recognized manufacturer of precision hydraulic components for mobile and industrial machinery. This unit operates on the gerotor/rotary vane displacement principle, converting pressurized hydraulic fluid into controlled rotary torque and angular motion for slew and swing functions. Unlike axial piston travel motors, the MSG series is purpose-built for intermittent, high-torque swing duty, delivering smooth bidirectional rotation with integrated braking and relief protection. It serves as the primary swing drive on compact excavators and similar equipment, where precise positioning, holding torque, and shock-free deceleration are critical to machine stability and operator control.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulic Swing Motor (Rotary Actuator) |
| Model Designation | MSG-27P-10E-22 / 8G250-21074 |
| Manufacturer | KYB |
| Displacement Class | MSG-27 Series (approx. 27 cm³/rev nominal) |
| Operating Pressure | Standard Industrial Grade (Up to rated swing circuit bar) |
| Mounting & Connection | Standard ISO / Manufacturer Swing Flange Interface |
| Rotation | Bidirectional with integrated holding brake |
Engineering Features & Advantages
- Precision Performance: Optimized internal displacement geometry delivers high starting and running torque for accurate swing positioning and smooth acceleration/deceleration of the upper structure.
- Integrated Braking & Relief: Built-in mechanical brake and cross-port relief valving protect the swing circuit from pressure spikes and hold the load securely on gradients.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with hardened internal components and robust sealing for extended service life in dusty, high-vibration environments.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, allowing drop-in replacement without modification to mounting, porting, or control linkage.
Typical Industrial Applications
This KYB swing motor is primarily deployed on compact and mid-size excavators for upper-structure slew control, and is equally suited to mini excavators, material handlers, and forestry or agricultural swing attachments. It is also found in industrial turntable and indexing equipment, as well as marine and port handling machinery requiring controlled rotary positioning under load.
PRODUCT IMAGES
KYB MSG-27P-10E-22 / 8G250-21074 Hydraulic Swing Motor
⚡ Emergency Plant Maintenance & Ready-to-Ship Notice:
- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
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