Markets
Hydraulic systems in rice machinery (harvesters, transplanters, threshers, and track-driven equipment) are essential for tasks like cutting, lifting, track propulsion, seedling placement, and grain handling. These systems must operate reliably in wet, muddy conditions while ensuring precision and durability. Below is a detailed breakdown of hydraulic products used in rice machines, along with high-market-share brands and specific models:
1. Hydraulic Motors
Role: Drive tracks (in tracked harvesters), cutting blades, grain augers, and threshing mechanisms.
Types:
Orbital Motors: Compact, low-speed/high-torque for precise control (e.g., track drives).
Piston Motors: High-power for cutting and threshing.
High-Market-Share Models:
Danfoss OMM/OMV Series (e.g., OMM 160): Compact motors for track propulsion in rice harvesters.
Eaton Char-Lynn 2000 Series (e.g., 211-1020): Robust motors for cutting blade drives.
Parker Hannifin F11 Series: High-torque motors for grain augers.
Bucher Hydraulics QXM Series: Piston motors for heavy-duty threshing.
2. Hydraulic Pumps
Role: Generate fluid flow for motors and cylinders.
Types:
Gear Pumps: For auxiliary systems (e.g., seedling conveyor belts in transplanters).
Piston Pumps: High-pressure for hydrostatic transmissions and cutting systems.
High-Market-Share Models:
Bosch Rexroth A10VO Series (e.g., A10VO 28): Axial piston pumps for hydrostatic drives in tracked harvesters.
Parker PGP Series (e.g., PGP505): Gear pumps for mid-pressure tasks.
Eaton 46 Series (e.g., 72456): Variable displacement pumps for adaptive power needs.
3. Hydraulic Cylinders
Role: Adjust cutting height, control lifting arms, and manage seedling trays in transplanters.
Types:
Double-Acting Cylinders: Precision adjustments for header height.
Telescopic Cylinders: Extended reach for grain tank covers.
High-Market-Share Models:
Parker Hannifin 2H/3H Series: Heavy-duty cylinders for header lift.
Eaton HSL Series (e.g., HSL-203): Corrosion-resistant cylinders for wet environments.
Wipro Hydraulics Custom Cylinders: Tailored for rice transplanter seedling mechanisms.
4. Hydraulic Control Valves
Role: Regulate flow direction, pressure, and actuator speed.
Types:
Directional Control Valves: Manage track movement and cutting blade engagement.
Proportional Valves: Enable precise seedling tray adjustments in transplanters.
High-Market-Share Models:
HydraForce SV08/SV10 Series: Compact solenoid valves for automated systems.
Sun Hydraulics DGMP Series: Manual valves for simple circuits.
Parker D1VW Series: Proportional valves for precision seedling placement.
5. Hydraulic Hoses & Fittings
Role: Connect components in muddy, abrasive conditions.
Key Brands/Models:
Gates UltraFlex II Hoses: Abrasion-resistant for rice straw and mud.
Parker Hannifin 429HT Hoses: Chemical- and moisture-resistant for wet fields.
Dixon Snap-Tite Couplers: Quick-disconnect fittings for field maintenance.
6. Hydraulic Power Packs
Role: Compact units for standalone systems (e.g., transplanter seedling trays).
Key Models:
Hyvair HPU Series: Lightweight units for mobile applications.
Bailey Hydraulics Custom Power Packs: Integrated systems for large harvesters.
7. Hydraulic Filters & Reservoirs
Role: Maintain fluid cleanliness in muddy, debris-laden environments.
Key Models:
Donaldson P550597: High-efficiency filters for rice harvesters.
Parker Hannifin Spin-On Filters: Easy replacement in harsh conditions.
8. Hydraulic Manifolds
Role: Centralize valve mounting for compact systems.
Key Models:
Sun Hydraulics Custom Manifolds: Modular designs for complex circuits.
Bosch Rexroth HMB Series: Pre-engineered for agricultural machinery.
Top Brands in Rice Machine Hydraulics
Eaton (Char-Lynn motors, HSL cylinders).
Parker Hannifin (PGP pumps, 2H cylinders).
Bosch Rexroth (A10VO pumps, HMB manifolds).
Danfoss (OMM motors for compact systems).
HydraForce (SV valves for precision control).
Example Hydraulic System in a Rice Combine Harvester
Motor: Danfoss OMM 160 (track drive).
Pump: Bosch Rexroth A10VO 28 (hydrostatic transmission).
Valve: HydraForce SV10-22 (cutting height control).
Cylinder: Eaton HSL-203 (header lift adjustment).
Key Considerations
Mud and Moisture Resistance: Components must be corrosion-resistant and sealed against water ingress.
Precision: Proportional valves are critical for seedling placement in transplanters.
Durability: High-torque motors and reinforced hoses withstand abrasive rice straw and mud.
Integration: OEMs like Kubota (e.g., Kubota DC Series), Yanmar, and Iseki integrate these components into rice-specific machinery.
For specialized applications, manufacturers like Wipro Hydraulics or Bucher provide custom solutions, such as shock-resistant cylinders for uneven terrain or motors optimized for low-speed track propulsion.
