Using top quality materials and cutting edge heat-treatment methods, Ralph McKay coulters are crafted with quality and reliability in mind. Our coulters and discs are dependable and designed to exceed OEM specifications, achieving an impressive service life. Look through the Bolt Patterns chart on the Resources page for more information on what we have to offer.
Plain or Notched (Scalloped).
Available in most centre hole patterns.
Radial holes available upon request.
Flat Back; Unsharpened Edge; Raised Centres; Re-Rollable – all available upon request.
| 3.00mm | 3.5mm | 5.0mm | 6.35mm | 7.5mm | Concavity | |
|---|---|---|---|---|---|---|
| 12 300mm | ||||||
| 14 350mm | 1.17″ | |||||
| 16 400mm | 1.50″ | |||||
| 18 450mm | 1.75″ | |||||
| 20 508mm | 2.0″ | |||||
| 22 559mm | ||||||
| 24 610mm |
