Hitachi G 18SE3 Technical Data And Service Manual

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4-4. Dust-proof Ball Bearing Thanks to the Labyrinth Construction
The ball bearing retainers at both sides of the armature have a labyrinth construction to make the ball bearings
dust-proof.
Fig. 4
Bearing cover (A)
Fan
Labyrinth
Ball bearing (6301DDCM)
Armature shaft
Ball bearing
(6000VVCM)
Commutator
Housing
Bearing bushing
Labyrinth
Dust seal
Housing
Bearing bushing
Fig. 5
4-5. Durable Ball Bearing Retainer Thanks to the Iron Bushing
The Models G 18SE3, G 18UA2, G 23SC3, G 23UA2, G 18SG2, G 18UB2, G 23SE2 and G 23UB2 are equipped
with the iron bushing in the ball bearing retainer at the commutator side of the housing to improve the durability of
the ball bearing retainer.
4-6. New Construction to Protect Grease Leakage
1) A rubber ring is added to the ball bearing section of the fan side to protect grease leakage.
2) An O-ring is added to the spindle lock section to protect grease leakage.
O-ring
Fig. 6
Fig. 7
Felt packing
Seal washer
Rubber ring (B)
Pinion
Pushing button
Spring
Metal
Gear cover
Ball bearing section of the fan side
Spindle lock section
M10 special nut
Rubber
ring (A)

Hitachi G 18SE3 Specifications

General

Brand	Hitachi
Model	G 18SE3
Category	Grinder
Language	English