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| 637 Rock Disc
Recommended for Midwest farms with medium to heavy draft applications.
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C-spring disc gangs, ¼-in.-thick disc blades, and heavy-duty 5½-in. spools with ¼-in.-thick walls and a 1¼-in. gang bolt.
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24-in.-dia. blades and 9-in. blade spacing in front and rear. Optional 9-in. front and 11-in. rear blade spacing.
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12-ft. 2-in. to 37-ft. 10-in. working width.
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Suggested list price: $11,500 to $43,000.
637 Wheatland Disc
Recommended for Wheat Belt areas where residue cutting and blade penetration are needed.
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C-spring disc gangs with .177- or .197-in.-thick disc blades, and heavy-duty 5½-in. spools with ¼-in.-thick walls and a 1¼-in. gang bolt.
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22- × .177-in. or 24- × .197-in. blades on 9-in. blade spacing in front and rear.
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12-ft. 2-in. to 37-ft. 10-in. working widths.
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Suggested list price: $11,000 to $42,000.
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JD 637 disc wheatland models?
