Johnford FBMC-160 floor-type horizontal boring mills are engineered for precision machining of large parts. The massive machines can be custom-configured to exactly meet specific production needs. Standard axis travels for X, Y, Z, W and V axes are 236″ x 137.8″ x 47.24″ x 39.37″ x 78.74″ (6,000 mm x 3,500 mm x 1,200 mm x 1,000 mm x 2,000 mm). Y axis travel can extend to 196.8″ (5,000 mm) and X axis travel can reach to 591″ (15,011 mm) and beyond.
The machines feature a moving column X axis and both a fixed and a rotary table for the V axis, a heavy duty design that results in maximum rigidity and accuracy. The X axis base is a one piece Meehanite cast iron construction. Roller ways in X, Y, Z, and V have precision Schneeberger 65mm bearings. A pressurized automatic oil system force lubricates the ways. A dual rack and pinion drive moves the X axis and provides high speed rapid traverse of 630″/min (16 m/min) with near zero backlash. Large diameter pre-tensioned ballscrews and servo motors position the other axes. The Y and V axes feature 3.15″ (80 mm)-dia. ballscrews while Z and W feature 2.5” (63.5 mm)-dia ballscrews.
| Spindle Size | 6.3" | 160.02 mm |
| X-Horiz Tvl of Table | 236" | 5,994.4 mm |
| Y-Vert Tvl of Head | 137.8" | 3,500.1 mm |
| Power | 100 hp | 74.6 kW |
| RPM | 2,200 RPM | 2,200 RPM |
| Table-W | 98.43" | 2,500.1 mm |
| Table-L | 275.59" | 7,000 mm |
| Control | CNC (Fanuc) | CNC (Fanuc) |