Kitagawa M0915RA, Инструкция по эксплуатации

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MA0882RHG
30
replace the mechanical seal if 10cc/h or more of coolant leaks from the drain port (C-Dr
port) because of damage to the seal surface caused by foreign matter such as chips.
Failure to do so results in damage to the mechanical seal.
○
Normally, the Teflon seal withstands about 5,000 hours of operation. (However, it varies
depending on the lubrication and the working pressure.) If hydraulic oil leaks from the
drain port (C-Dr port), replace the Teflon seal.
To check the mechanical seal and the Teflon seal for wear, follow the procedure below.
(See 1-4 HB type parts list on pages 9-10 and table 8 List of seals to use on page 28
and the following detailed drawing of the parts of the mechanical seal (Fig. 9) to be
checked.)
When removing the parts, place a match mark(s) on each part for reassembly.
(1) Remove the socket head cap screw [20] (4 pieces) to remove the cover [13].
(2) Remove the setscrew (2 pieces) put in the mechanical seal [34] to disassemble the
mechanical seal [34].
Note) If any abnormalities such as damage to the mechanical seal, flaws in the seal
surface, deformation, etc. are found, replace the mechanical seal.
(3) Remove the socket head cap screw [19] (4 pieces) to remove the sleeve cover [7].
(4) Check the Teflon seal [33] in the center of the sleeve cover [7] for wear. If any
abnormalities such as deformation, wear on one side, etc. are found, replace the
Teflon seal.
To facilitate assembly at the joint and the seal part, or prevent flaws in assembling
the seal, apply a sufficient amount of oil (equivalent to turbine oil #90) or of grease
(general grease: Class 1) to follow the disassembly procedure in the reverse order
with due care so as not to damage the bearing, the o-ring, and the Teflon seal.
Tighten the socket head cap screw with the specified tightening torque (M6: 13N
･
m).
Fig.9 Detail of mechanical seal inspection part