John Deere® Compatible Bisalloy & Stainless Round Bar Concave
Experience high-performance threshing with this premium C&M Australian-made round bar concave. Specifically engineered for John Deere® STS and S-Series combine harvesters, this concave is manufactured in our Griffith factory from premium-grade materials to ensure maximum service life and superior crop separation.
The frame is precision laser-cut from 6mm Bisalloy 400 extended wear plate, providing a high-strength foundation that keeps it edge and resists wear. The threshing surface utilizes 16mm T304 stainless steel round bars, offering exceptional extended wear and preventing sepataion degradation. This combination of high-performance materials ensures your product feeding and threshing system stays in top condition through multiple high-capacity harvests.
John Deere® OEM Cross-Reference
Replaces OEM Part Number: AXE28957 AH168478, AH205261, AH206456, AXE28957, BH84226, CJDSTS9660RBMR, CJDSTSRBMR, JDEX014R
Round Bar Concave Compatibility: John Deere STS & S-Series
| Series |
Models |
Reference |
| John Deere® STS Series |
9750, 9660, 9760, 9860, 9670, 9770, 9870, 9880 |
Standard Fitment |
| John Deere® S6 Series |
S650, S660, S670, S680, S690 |
Standard Fitment |
| John Deere® S7 Series |
S760, S770, S780, S790, S7 600–S7 900 |
Standard Fitment |
Technical Specifications & Features
- Manufacturer: Proudly C&M Australian made by Collier & Miller.
- Frame Material: 6mm Bisalloy 400 for superior abrasion resistance.
- Bar Specification: 16mm T304 Stainless Steel round bars for extended serviice life
- Wear Rating: Extended wear configuration for high-yield grain and corn.
- Versatility: Suitable for Position 1, 2, or 3 (Position 1 requires bolt-on ramp).
- Finish: Professional powder-coated finish for additional protection.
- Dispatch: Available for fast Australia-wide shipping from Collier & Miller.
Expert Maintenance Review
The round bar concave is primarily utilized for threshing larger grains such as corn, but is increasingly popular for small grains when paired with a helical concave in position one. This configuration allows threshed grain to fall away faster, reducing rotor load and grain damage. We recommend inspecting the bars for abrasion thinning and checking frame squareness during every preventative maintenance check.
Upgrading to this Bisalloy and Stainless solution is a strategic choice to save money over the life of the machine. The stainless steel bars maintain a polished, low-friction surface that resists off-season rust, ensuring your threshing system remains in top condition from the very first acre of the season and providing a significantly longer service life than standard carbon steel concaves.
Installation Tip: Position 1 Setup
When installing this concave in Position 1, ensure you also fit the required bolt-on ramp to facilitate a smooth transition from the feeder house. Using new high-tensile mounting hardware is essential to maintain a high-strength, vibration-free threshing environment. A precision-aligned concave is vital for maintaining high-speed harvesting capacity.