Maintenance Of Cooling Fan And Cooling Fan Motor - Hitachi NEXT Series Service Manual

4.13 Maintenance of Cooling fan and cooling fan motor

A picture and a drawing below indicate the structure of the cooling fan, fan motor and their fastening.
Cooling fan and fan motor is fastened by the left hand screw (L-bolt). Take care so that cooling fan is not damaged
when it is removed from the air compressor.
Fan motor
F motor
mount
Cooling fan
(Turbo Fun)
Bell Mouth
Part name
Fan Motor Output
Turbo fan Part number
Shaft diameter
Fan diameter
No. of impeller
Impeller width
Part number
Boss internal
diameter
L-bolt Bolt size
Model
DE/ODE
Bearing type
6206ZZCM/L369
Part number
Model
HP(kW)
–
inch
(mm)
mm
pcs.
inch
(mm)
–
inch
(mm)
inch
(mm)
Fan motor bearing (ENS grease shielded)
55 kW
DE
6206ZZCM/L369
5265B150 5265B150
Confidential to Customer
Fasten part detailed
55 kW
460V
2.0 (1.5)
59042170
φ 0.866h6 (0-0.000512)
( φ 22h6 (0-0.013))
φ 23.6
( φ 600)
7.48
(190)
59005050
φ 0.866H8 (0
( φ 22H8 (0
M8 × 1.18 (30) (Left-hand thread)
ODE DE
6306ZZCMENSS
52531140
31
Fan motor shaft
Keep the key direction.
Rounded edge is for the shaft end
and flat edge is for motor direction.
Fan boss
Fan fixed plate
Spring washer
L-bolt
Fan Motor weight
45/55kW : approx. 80lbs(35kg),
75kW : approx. 90lbs(40kg)
Turbo Fun weight
45/55/75kW : approx. 35lbs(15kg)
F motor mount weight
45/55kW : approx. 18lbs(8kg),
75kW : approx. 20lbs(9kg)
75 kW
2.9 (2.2)
59042180
7
0.000130)
＋
0.033))
＋
75 kW
ODE
6306ZZCMENSS
52531140