hammer drill dh 30pc/dh 30pb

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hammer drill dh 30pc/dh 30pb | Manualzz

8-5. Sealed and Dust-proof Construction

The crank case and cylinder case are sealed by four o-rings, and two oil seals which serve to prevent leakage of the grease, as well as to prevent dust and dirt from entering the mechanism.

The drill bit chuck portion is protected by a rubber front cap to keep out dust and chips.

Front cap

O-ring

O-ring

O-ring

Crank case

O-ring

Oil seal

Oil seal

Cylinder case

Fig. 6

8-6. Speed Control

The variable speed control switch permits free change of the rotation speed and striking force. When drilling in fragile materials, pull the switch trigger gently for low rotation speed and striking force to achieve optimum results.

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