MIL-G-80048C
3.7 Performance. Each machine shall be capable of grit ding three (3)
test rods of the size required in 4.5.2. Roundness, diamete- variation and
surface finish shall be in accordance with the requirements in 4.5.2.
Each machine shall meet the alignment
3.8
Alignment tolerances.
tolerances designated in 4.5.3.
3.9 Motors. Motors shall have ball or roller bearings. Continuous duty
Unless
horsepower ratings shall conform to the requirements of table I.
otherwise specified (see 6.2.1) each motor shall meet the requirements of a
totally enclosed, fan cooled (TEFC) motor.
Unless otherwise specified (see 6.2.1), the
3.10 Electrical system.
electrical system shall conform to the requirements of ANS1/NFPA-79. Each
machine shall draw all of its electrical power from a single 230/460 volt,
The
3 phase, 60 Hz circuit having a fused safety disconnect switch.
grinder shall be Initially wired for operation on 230 volts. An identified
terminal for grounding the machine when installed shall be mounted in or
near the disconnect switch. The terminal shall be suitable for connecting
the size grounding conductor specified in Table 240/A of ANSI/NFPA-79 for
the disconnect fuse rating.
3.11 Coolant system. A coolant system shall be furnished.
otherwise specified (see 6.2.1), it shall be of the flood type. The flood
type system shall include a sump or reservoir, a power driven pump and
piping. The coolant reservoir shall be of sufficient capacity to permit
The coolant system shall include a baffle(s) or
full flow cooling.
The reservoir shall be
strainer which is easily removable for cleaning.
equipped with means for emptying and cleaning. A coolant delivery nozzel
and valve shall be provided to permit the operator to direct and control
the amount of coolant flow.
The hydraulic system, if furnished, shall be
3,12 Hydraulic system.
complete including pumps, valves, piping, cylinders and pressure controls.
Overpressure protection shall be provided on the high pressure line from
the hydraulic pump to prevent damage to components. A filter system shall
be provided to insure delivery of clean fluid to the hydraulic system.
The hydraulic reservoir shall have a sight gage to indicate the fluid
level.
3.13 Standard equipment. Unless otherwise specified (see 6.2.1), each
machine shall be furnished with all standard equipment, including all
maintenance tools normally furnished by the manufacturer.
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