Hitachi G 18SR, Технические данные и руководство по обслуживанию

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Fig. 4
4-4. Durable Ball Bearing Retainer thanks to the Iron Bushing
The Models G 18SR, G 18SRU, G 23SR and G 23SRU 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.
Housing
Bearing bushing
Fig. 5
4-5. 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.
M10 special nut
Spring
Felt packing
Seal washer
Rubber ring (B)
Metal
Gear cover
Pushing button
O-ring
Ball bearing section of the fan side Spindle lock section
Pinion
Fig. 6