The EC-500/50 comes standard with our 7500-rpm 50-taper spindle, which uses a Haas-built two-speed gearbox to provide a wide constant horsepower band, good low-speed torque for heavy cuts, and higher torque throughout the range above 500 rpm.

For heavy cuts and high material-removal rates, a high-performance 7500-rpm spindle is also available. Powered by a 60 hp vector drive, this spindle provides higher power throughout the rpm range than the standard spindle. A 10,000-rpm, 60 hp spindle is also available.

• 2-speed gearbox designed, manufactured, and built in-house
• More power for larger diameter tools and tougher materials
  
• Automatic High or Low gear selection, based on commanded rpm
  
• User-programmable selection of High or Low gear via M-codes

Optional 7500-rpm, 60 Horsepower (44.7 kW) Peak Vector Drive Spindle CLICK HERE

Optional 10,000-rpm, 60 Horsepower (44.7 kW) Peak Vector Drive Spindle CLICK HERE

The 4-nozzle coolant ring surrounding the spindle nose is perfectly positioned so that nozzles can be pointed at the shortest tools, and others can be positioned for longer tools. The compact, cylindrical design prevents chips from collecting on top. NOTE: The Haas Programmable Coolant Nozzle (P-COOL) is not available on the EC-500/50.

In previous Haas pallet-changing machines, the G188 code was used to call a part program from the Pallet Schedule Table (PST), based on which pallet was loaded. Continuous operation was achieved by running a main program that consisted of an M50 to perform a pallet change, the G188 to call the program for the loaded pallet, and an M99 to loop the whole process. The M50 loaded the next scheduled pallet, and the G188 called the program designated for that pallet.

With the G188, however, if you restarted your machining process in the middle of one of the pallet programs, it didn’t allow you to get back to the main program to continue uninterrupted machining. You had to wait for your restarted program to finish, select your main program again, and then start your continuous cycle.

We developed a new M-code to solve this problem. The M199 is used at the end of a program. When the program is started by pressing [CYCLE START] in Memory mode, the M199 acts exactly like an M30 (Program End and Reset). But if the program is started by pressing [INSERT] while the Pallet Schedule Table is displayed, the M199 will command a pallet change to load the next scheduled pallet, and then run the program associated with that pallet. This allows the user to start machining on any pallet, and continue uninterrupted machining, as long as pallets are scheduled.

The cycloidal rotary drive system – designed for machine tools and robotics – provides a great combination of speed, accuracy, and durability to the B axis. The rugged design provides long service life, with little or no maintenance, and is especially durable in a crash. The cycloidal rotary drive can be back driven to absorb energy from an impact. The shock-load capacity is 5 times the rated torque of the gearbox, and the entire gearbox is a simple drop-in replacement, should damage occur.

An automatic probe arm stores the tool setting probe in a protective compartment during machining operations. When the tool probe is needed, an M104 code activates the automatic probe arm to lift the probe and lock it into place. When probing is complete, an M105 retracts the probe to its protective compartment.