barneyrb said:
Just got my new to me Yanmar home. I'm going to have to buy a new disc and was wondering how much I can pull. It is a US35 just like a Deere 990. Was considering this one. Any comments???
Tractor Supply Company - 6 1/2 ft Box Frame Disc
Tillage Answers Resource Tandem Disc Harrow Width Calculator
Recommended Disc Harrow width: 35HP Engine
..............................Class I......Class II..........Class III
Recommended Width.....6'..............5'...................4'
Speed of Operation...5 - 6.6 MPH...5 - 6.6 MPH....5 - 6.6 MPH
Depth of Operation.......4"..............5"..................6"
Soil Condition............Average.....Average.........Average
Class Descriptions
Because of the wide variance in farming operations, it is not possible to provide exact specifications for all farming conditions. All figures in this calculator should be considered only as an approximate guide. Consult your local dealer for specific recommendations.
Increased amounts of crop residue has more farmers looking into the agronomic benefits of tandem disc harrows. Discs are in a unique class for Residue Management because they both size and mix residue into the soil... compared to some tools that only size residue or others that mix without sizing.
Class I: Seed Bed Finishing
- 100#-140#
- 22" blades
- Moderate crop residue management
- High-speed tillage/leveling
Class II: All-Purpose
- 140#-210#
- 22" or 24" blades
- Primary tillage or seed bed finishing
- Heavy crop residue management
Class III: Primary Tillage
- 210#-250#
- 24" or 26" blades
- Primary tillage/extreme conditions
- Heavy crop residue management