96-8000 405
OPTIONS
June 1999
11.11 THROUGH THE SPINDLE COOLANT (TSC) - OPTION
The HAAS Through The Spindle Coolant (TSC) option includes an auxiliary coolant pump that is used to supply
high pressure coolant to the cutting tool.
When TSC is commanded (M88), the precharge is activated and the tool release piston moves down to engage
the drawbar, forming a seal. For 50 taper TSC, coolant or air pressure closes the seal, and it opens again when
pressure is released.
NOTE: The wear surfaces of the seal are engaged only when TSC is in use.
The auxiliary pump turns on and begins sending coolant to the spindle. The control waits for coolant pressure
to remain stable for 0.1 seconds before proceeding. If coolant pressure does not come on within 60 seconds,
the system shuts down and gives Alarm 151 (Low Tool Coolant).
When the coolant system is turned off (M89), the spindle is stopped, the pump is shut off, and air flows through
the spindle and the TSC drain line for 2-1/2 seconds to purge leftover coolant.
Refer to the "Maintenance" section for TSC system maintenance information.
OPERATION
GENERAL WARNINGS
The TSC pump is a precision gear pump and will wear out faster and lose pressure if
abrasive particles are present in the coolant.
Shortened pump life, reduction of pressure and increased maintenance are normal and to
be expected in abrasive environments and are not covered by warranty.
When maching castings, sand from the casting process and the abrasive properties of cast
aluminum and cast iron will shorten pump life unless a special filter is used in addition to
the 100 mesh suction filter. Contact HAAS for recommendations.
Machining of ceramics and the like voids all warranty claims for wear and is done entirely at
customer's risk. Increased maintenance schedules are absolutely required with abrasive
swarf. The coolant must be changed more often and the tank thoroughly cleaned of
sediment on the bottom. An auxiliary coolant tank is recommended.
îš• Proper tooling, with a through-hole, must be in place before using the TSC system. Failure to
use proper tooling will flood the spindle head with coolant and void the warranty.
îš• Use a pull stud with "45 Degree, P40T Type 1, inch threads" built to JMTBA standard "MAS 403-
1982". If the machine is equipped with the optional BT tool changer, use BT tooling only. Contact
the tool manufacturer for further information. Pull studs are available through HAAS. Refer to
the Technical Reference section of the manual for the proper tool part numbers and
identification.
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