Tractor Horsepower and Rotor Blade Configuration
A 6-foot working width (approx. 1.8 meters) matches the engine and PTO output of mainstream 40 to 50 HP utility tractors.
The rotor shaft is fitted with specialized carbon steel blades calibrated for either dryland seedbed preparation or wetland paddy puddling.
- Horsepower Match: Recommended for tractors between 40 HP and 50 HP delivering at least 35 PTO HP
- Blade Count: 42 to 48 blades arranged along the rotor shaft in a spiral layout to minimize tractor engine shock
- Blade Geometries: L-shaped blades for clean weed cutting and clod shattering in dry soil; C-shaped or J-shaped blades for sticky, wet soils
- Gearbox Options: Single-speed or multi-speed gearboxes allowing operators to adjust rotor RPM (180 to 240 RPM) to match soil texture
Agronomic Benefits and Operational Efficiency
Using a 6-foot rotavator saves substantial time and fuel compared to multiple rounds of traditional disc harrowing and cultivating.
It chops and incorporates organic crop residues directly into the active topsoil horizon, boosting soil organic carbon.
- Single-Pass Seedbed: Creates a fine, well-aerated crumb structure ready for immediate planting and sowing
- Stubble Incorporation: Efficiently mulches green manures, paddy stubble, and cotton stalks into the soil
- Puddling Performance: When fitted with puddling skids, creates an impervious mud slurry that retains water in transplanted rice fields
Price Determinants and SMAM Government Subsidies
Market prices for 6-foot rotavators depend on side drive mechanisms (gear drive vs chain drive), blade steel quality (boron steel), and multi-speed gearing.
Under the Sub-Mission on Agricultural Mechanization (SMAM) and state DBT portals, eligible farmers can receive 40% to 50% capital subsidies.
- Drive System: Side gear drive systems offer superior reliability and enclosed oil-bath lubrication compared to older chain drives
- Boron Steel Blades: Premium boron steel blades last significantly longer before requiring replacement than standard carbon steel
- Subsidies: Registered farmers can apply on state DBT portals for approved brands (Shaktiman, Maschio, Fieldking, Swan)
Official source
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Common questions
What tractor HP is required for a 6-foot rotavator?
A 40 to 50 HP tractor with standard 540 RPM PTO is optimal for operating a 6-foot rotavator.
How many blades are on a 6-foot rotavator?
A standard 6-foot rotavator has 42 or 48 blades depending on manufacturer rotor flange spacing.
What is the difference between L-blades and C-blades?
L-blades are best for cutting weeds and creating fine seedbeds in dry soils; C-blades handle heavy clay and wet soils with less clogging.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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