Hitachi NT50AF Manuel D’Utilisation

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Frequent, but not excessive, lubrication is required for best perfor‑

mance. Oil added through the air line connection will lubricate the 

internal parts. Use Pneumatic Tool Lubricant, Mobil Velocite #10, or 

equivalent. Do not use detergent oil or additives as these lubricants 

will cause accelerated wear to the seals and Piston Cushion in the 

Tool, resulting in poor tool performance and frequent Tool mainte‑

nance.

If no airline lubricator is used, add oil during use into the air fitting 

on the Tool once or twice a day. Only a few drops of oil at a time 

are necessary. Too much oil will only collect inside the Tool and will 

be noticeable in the exhaust cycle.

For cold weather operation, near and below freezing, the moisture 

in the air line may freeze and prevent Tool operation. We recom‑

mend the use of WINTER FORMULA air tool lubricant (NEW‑MATIC 

Winter Formula or equivalent) or permanent anti freeze (ethylene 

glycol) as a cold weather lubricant.

CAUTION: Do not store tools in a cold weather environment to 

prevent frost or ice formation on the tools operating valves and 

mechanisms that could cause tool failure.

NOTE: Some commercial air line drying liquids are harmful to 

O‑rings and seals – do not use these low temperature air dryers 

without checking compatibility.

Do  not operate the Tool at high pressure without fasteners