Below is a presentation of Sandvik's systems for Raise boring.
Systems
Reaming head CRH 2/2SP, reaming diameter 660 mm
Reaming head CRH 3, reaming diameter 950/1060 mm
Reaming head CRH 4, reaming diameter 1420 mm
Reaming head CRH 5, reaming diameter 1524 mm
Reaming head 6/6S, reaming diameter 1829 mm
Reaming head CRH 7/7S, reaming diameter 2134 mm
Reaming head CRH 8/8S/8D, reaming diameter 2440/2447 mm
Reaming head CRH 8L/9L, reaming diameter 2440/2743 mm
Reaming head CRH 10D, reaming diameter 3094 mm
Reaming head CRH 10SD, reaming diameter 3094 mm
Reaming head CRH 10E, reaming diameter 3130/3500/3824/4042 mm
