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New-Style Rasp Bars For Rotary Combines
"Our new rasp-type rotor bars for axial flow combines pull soybean stems and other tough material through combines much easier with-out tearing up the crop. They can increase capacity by up to 20 percent," says Terry Welch, St. John Welding., St. John, Kan.
The company strips off the original rub bar mounts and w
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New-Style Rasp Bars For Rotary Combines COMBINES Accessories 22-1-19 "Our new rasp-type rotor bars for axial flow combines pull soybean stems and other tough material through combines much easier with-out tearing up the crop. They can increase capacity by up to 20 percent," says Terry Welch, St. John Welding., St. John, Kan.
The company strips off the original rub bar mounts and welds the new patent pending chrome alloy rasp bars around the rotor in a staggered configuration. The bars are longer than the original ones and equipped with long 3/4-in. deep teeth spaced far enough apart to provide an open area for grain and fines to channel between them, as opposed to the pinching action at the concave surface required by the use of shallower toothed rub bar-style rotor bars. They also deposit grain and fines more evenly through the entire concave and separating grate areas, providing a more consistent spreading of the load across the cleaning shoe.
"The leading edge of each tooth is almost vertical, allowing it to pull material more easily and providing more positive rolling and fluffing action of material for separation of the crop without the squeezing and tearing action of rub bar type rotor bars," says Welch. "If necessary, spiraled vine sweeps can be in-stalled at the rear of the rotor in order to more evenly spread material to the discharge beater."
The bars are available for L and M Gleaner combines, Agco/Gleaner R-50, R-62, and R-72 rotaries, and all Case-IH, New Holland, and White/Massey rotary combines.
"A field ready rotor modified for a Case-IH 1460 combine sells for $2,150," says Welch. "By this spring we plan to offer fully enclosed rotors equipped with our new rasp bars for conventional as well as rotary Gleaner combines. And within 6 to 8 months we plan to offer the bars for Deere and other conventional combines."
Contact: FARM SHOW Followup, St. John Welding & Mfg., Inc., Box 175, St. John, Kan. 67576 (ph 800 549-3289 or 316 549-3282; fax 316 549-3262); E-mail: sjwelding@feist.com. Home page at www.stjohnwelding.com.
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