More common: 37 strands (1+6+12+18) or 61 strands (1+6+12+18+24). for concentric lay. It may be a bunched or rope-strand construction.
The 8 mechanical spindle speeds are achieved by combining the dual-speed motor switch with the mechanical gear levers located on the face of the drill head. manual strands s68 45
: Hand-tighten the lock nut firmly with a wrench to make sure the table doesn't shift or vibrate while you are drilling. Elevating and Lowering the Unit More common: 37 strands (1+6+12+18) or 61 strands
: Move the secondary electrical toggle switch to position 1 (low motor speed) or position 2 (high motor speed). manual strands s68 45
: Toggle switch on the control box changes the motor poles (Low Speed vs. High Speed).