Graham - 4 Bar Linkage System

This robust partnership product offers the following features and benefits:

• Wireless row level control and monitoring including as-applied mapping and statistics utilizing our Graham Command Pro tablet
• Active Management – Unlike other products that are manual weight setting with no sensor feedback, Graham 4 Link Force offers active, automatic weight management on the closing wheels.  By  simply clicking a button on Graham Command Pro for instant pressure change or utilize prescription maps (.SHP) for automatic adjusts based on GPS location.
• 12 volt 2″ stroke electric actuators on each row to provide up to 125 pounds of down pressure
• Graham Torsion Control ™ provides over 100 pounds of stored energy for necessary up-pressure or necessary adjustments through various soil conditions to maintain a smooth ride of the closing wheel.
• No air hoses
• No hydraulic hoses
• Only 12V power
• Wirelessly controlled
• Pair with Graham Force and Graham Pro electric drives to maximize planter performance

Benefits of the 4 bar linkage system over the swing arm closers:

• Keeps press wheels from moving in or out over furrow as the row unit flexes
• Keeps pinch points of wheels the same through 7″-9″ of vertical travel
• Allows for consistent fertilizer placement and furrow closing
• Takes the bounce out of row units when planting above 5mph
• Fits John Deere, Kinze, Case IH, White, Yetter, and Horsch
• Better seed to soil contact for uniform emergence
• Travel of 4 link is parallel to the ground
• More even depth control of planter unit
• Works great with the G2 fertilizer disc
• Run less down pressure on row units
• Ground following tail section
• No more blank planted rows