Hitachi NEXT Series - Maintenance of Cooling Fan and Cooling Fan Motor

31
Confidential to Customer
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
Fasten part detailed
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)
Part name Model
55 kW 75 kW
460V
Fan Motor Output
HP(kW) 2.0 (1.5) 2.9 (2.2)
Turbo fan Part number – 59042170 59042180
Shaft diameter
inch
(mm)
φ 0.866h6 (0-0.000512)
( φ 22h6 (0-0.013))
Fan diameter mm
φ 23.6
( φ 600)
No. of impeller pcs. 7
Impeller width
inch
(mm)
7.48
(190)
Part number – 59005050
Boss internal
diameter
inch
(mm)
φ 0.866H8 (0
＋ 0.000130)
( φ 22H8 (0
＋ 0.033))
L-bolt Bolt size
inch
(mm)
M8 × 1.18 (30) (Left-hand thread)
Fan motor bearing (ENS grease shielded)
Model 55 kW 75 kW
DE/ODE DE ODE DE ODE
Bearing type 6206ZZCM/L369 6206ZZCM/L369 6306ZZCMENSS 6306ZZCMENSS
Part number 5265B150 5265B150 52531140 52531140