Cutter head for longwall shearer

A cutter head for a mining machine, the cutter head comprising:

• a drum including a first end, a second end, and an outer surface, the drum rotatable about a drum axis extending between the first end and the second end;
• a vane coupled to the outer cylindrical surface extending away from the drum axis;
• a cutting bit assembly positioned adjacent the vane, the cutting bit assembly including a bit and a holder block, the bit including a tip portion and a shank portion, the shank portion received within the holder block along a central axis, the holder block including a forward end adjacent the tip portion, a rear end opposite the forward end, and a transverse opening positioned between the forward end and the rear end, the transverse opening permitting access to a rear end of the shank portion, the holder block further including a rear opening;
• and
• a gusset coupled to the vane and spaced from the rear end of the holder block,
• wherein when the bit is broken, a portion of the bit is removable from the holder block through the rear opening and between the rear end of the holder block and the gusset.