"Mix And Match" Modules To Design Your Own Concave
You can match your combine concaves to your crop, and easily change between crops with the new modular design from Sunnybrook Welding & Machine Shop, Ltd. Instead of large, full-size concave panels, Sunnybrook offers frames that each hold individual modules, or “boxes”. Introduced initially for Deere STS combines, they are now also available for International Harvester combines.
“Two frames replace an existing OEM concave,” says Gerald Foster, Sunnybrook. “Our design lets you pick one or more of 4 levels of threshing action. You can mix and match modules to fit your crop.”
The 4 module styles include the Minimum Thresh for canola, Maximum Thresh for wheat and barley, 21 Hole standard, and Round Bar for peas/beans and corn.
The Minimum Thresh has a smooth face with no holes and is designed to disperse the crop better and use more of the cleaning area. Installing one or two frames with smooth boxes is recommended to increase rotor speed without damaging more sensitive crops like canola.
The Maximum Thresh box is designed for rotary combines. It has slots and square bars on a 45° angle to better match the flow of material across the concaves.
"We find it provides much more aggressive threshing, but it also lets you open up more in clearance between the concave and the rotor, which reduces power consumption," says Foster.
The 21 Hole functions like a standard wire concave, but it offers more threshing area. It’s not as aggressive as the Maximum Thresh box.
Round Bar boxes are designed for large seeds and gentle action. The rounded bars offer gentle threshing action without overloading the shoe. It’s recommended to avoid seed-skin damage on crops like beans and lentils and appears to keep crop samples cleaner.
"When you order your first set of frames, you can pick any of the four inserts," says Foster. "The first may be all smooth, the second a mix to match the flow of material through the combine."
If a single box is damaged, it can be pulled out and repaired or replaced, as opposed to replacing an entire concave. When boxes are bolted into place, they have the added impact of putting the concave under a negative load, bending it upward. This makes the concave even stronger.
"Another benefit of the boxes is the ability to treat the surface," says Foster. Sunnybrook has been a leader for years in boronizing wear parts for longer life and reduced friction.
"You can't boronize an entire concave, but it's an option with our boxes," says Foster. "You can also reverse the boxes as the edge wears down, giving your concave fresh edges."
The introductory price for two concave frames with 7 boxes each is $1,200. Four frames are $2,000, and 6 are priced at $2,700. The first bolt-on lip is free with additional lips priced at $120 each.
Foster notes that shipping concaves is very costly. However, once the initial investment in frames and boxes has been made, shipping individual boxes will cost about 1/10th that of a frame and inserts. "If a rock bends two or three boxes, that's all you'll have to buy," says Foster.
Contact: FARM SHOW Followup, Sunnybrook Welding & Machine Shop Ltd., Box 28, Sunnybrook, Alta., Canada T0C 2M0 (ph 780 789-3855; info@sunnybrookwelding.com; www.sunnybrookwelding.com).
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Mix And Match Modules To Design Your Own Concave COMBINES Accessories You can match your combine concaves to your crop and easily change between crops with the new modular design from Sunnybrook Welding & Machine Shop Ltd Instead of large full-size concave panels Sunnybrook offers frames that each hold individual modules or “boxes” Introduced initially for Deere STS combines they are now also available for International Harvester combines “Two frames replace an existing OEM concave ” says Gerald Foster Sunnybrook “Our design lets you pick one or more of 4 levels of threshing action You can mix and match modules to fit your crop ” The 4 module styles include the Minimum Thresh for canola Maximum Thresh for wheat and barley 21 Hole standard and Round Bar for peas/beans and corn The Minimum Thresh has a smooth face with no holes and is designed to disperse the crop better and use more of the cleaning area Installing one or two frames with smooth boxes is recommended to increase rotor speed without damaging more sensitive crops like canola The Maximum Thresh box is designed for rotary combines It has slots and square bars on a 45° angle to better match the flow of material across the concaves We find it provides much more aggressive threshing but it also lets you open up more in clearance between the concave and the rotor which reduces power consumption says Foster The 21 Hole functions like a standard wire concave but it offers more threshing area It’s not as aggressive as the Maximum Thresh box Round Bar boxes are designed for large seeds and gentle action The rounded bars offer gentle threshing action without overloading the shoe It’s recommended to avoid seed-skin damage on crops like beans and lentils and appears to keep crop samples cleaner When you order your first set of frames you can pick any of the four inserts says Foster The first may be all smooth the second a mix to match the flow of material through the combine If a single box is damaged it can be pulled out and repaired or replaced as opposed to replacing an entire concave When boxes are bolted into place they have the added impact of putting the concave under a negative load bending it upward This makes the concave even stronger Another benefit of the boxes is the ability to treat the surface says Foster Sunnybrook has been a leader for years in boronizing wear parts for longer life and reduced friction You can t boronize an entire concave but it s an option with our boxes says Foster You can also reverse the boxes as the edge wears down giving your concave fresh edges The introductory price for two concave frames with 7 boxes each is $1 200 Four frames are $2 000 and 6 are priced at $2 700 The first bolt-on lip is free with additional lips priced at $120 each Foster notes that shipping concaves is very costly However once the initial investment in frames and boxes has been made shipping individual boxes will cost about 1/10th that of a frame and inserts If a rock bends two or three boxes that s all you ll have to buy says Foster Contact: FARM SHOW Followup Sunnybrook Welding & Machine Shop Ltd Box 28 Sunnybrook Alta Canada T0C 2M0 ph 780 789-3855; info@sunnybrookwelding com; www sunnybrookwelding com
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