Summary of the content on the page No. 1
MODEL ROTARY HAMMER
MODÈLE MARTEAU ROTATIF
DH 50MB
MODELO MARTILLO GIRATORIO
5
INSTRUCTION MANUAL AND SAFETY INSTRUCTIONS
WARNING
Improper and unsafe use of this power tool can result in death or serious bodily
injury!
This manual contains important information about product safety. Please read
and understand this manual before operating the power tool. Please keep this
manual available for others before they use the power tool.
MODE D’EMPLOI ET INSTRUCTIONS DE SECURITE
AVERTISSEMENT
Une utilisa
Summary of the content on the page No. 2
English CONTENTS English Page Page IMPORTANT INFORMATION ................ 3 ASSEMBLY AND OPERATION ............... 10 MEANINGS OF SIGNAL WORDS ......... 3 APPLICATIONS .................................... 10 PRIOR TO OPERATION ....................... 10 SAFETY ...................................................... 4 HOW TO USE ....................................... 11 GENERAL SAFETY RULES .................... 4 USING DRILL CHUCK, SPECIFIC SAFETY RULES AND CHUCK ADAPTOR .........................
Summary of the content on the page No. 3
English IMPORTANT INFORMATION Read and understand all of the operating instructions, safety precautions and warnings in the Instruction Manual before operating or maintaining this power tool. Most accidents that result from power tool operation and maintenance are caused by the failure to observe basic safety rules or precautions. An accident can often be avoided by recognizing a potentially hazardous situation before it occurs, and by observing appropriate safety procedures. Basic safety precau
Summary of the content on the page No. 4
English SAFETY GENERAL SAFETY RULES WARNING: Read and understand all instructions. Failure to follow all instructions listed below, may result in electric shock, fire and/or serious personal injury. SAVE THESE INSTRUCTIONS 1. Work Area (1) Keep your work area clean and well lit. Cluttered benches and dark areas invite accidents. (2) Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust. Power tools create sparks which may ignite the dus
Summary of the content on the page No. 5
English (3) Avoid accidental starting. Be sure switch is off before plugging in. Carrying tools with your finger on the switch or plugging in tools that have the switch on invites accidents. (4) Remove adjusting keys or wrenches before turning the tool on. A wrench or a key that is left attached to a rotating part of the tool may result in personal injury. (5) Do not overreach. Keep proper footing and balance at all times. Proper footing and balance enables better control of the tool in unexpect
Summary of the content on the page No. 6
English SPECIFIC SAFETY RULES AND SYMBOLS 1. Hold tools by insulated gripping surfaces when performing an operation where the cutting tool may contact hidden wiring or its own cord. Contact with a “live” wire will make exposed metal parts of the tool “live” and shock the operator. 2. Wear ear protectors when using the tool for extended periods. Prolonged exposure to high intensity noise can cause hearing loss. 3. Never touch moving parts. Never place your hands, fingers or other body parts near
Summary of the content on the page No. 7
English 14. Never leave tool running unattended. Turn power off. Don’t leave tool until it comes to a complete stop. 15. Carefully handle power tools. Should a power tool be dropped or struck against hard materials inadvertently, it may be deformed, cracked, or damaged. 16. Do not wipe plastic parts with solvent. Solvents such as gasolie, thinner, benzine, carbon tetrachloride, and alcohol may damage and crack plastic parts. Do not wipe them with such solvents. Wipe plastic parts with a soft clo
Summary of the content on the page No. 8
English DOUBLE INSULATION FOR SAFER OPERATION To ensure safer operation of this power tool, HITACHI has adopted a double insulation design. “Double insulation” means that two physically separated insulation systems have been used to insulate the electrically conductive materials connected to the power supply from the outer frame handled by the operator. Therefore, either the symbol “ ” or the words and “Double insulation” appear on the power tool or on the nameplate. Although this system has no
Summary of the content on the page No. 9
English FUNCTIONAL DESCRIPTION NOTE: The information contained in this Instruction Manual is designed to assist you in the safe operation and maintenance of the power tool. Some illustrations in this Instruction Manual may show details or attachments that differ from those on your own power tool. NAME OF PARTS Side Handle Nameplate Stopper Drill Bit Grip Front Cap Selector Lever Housing Handle 5 Brush Cap Cover Tapping Screw Dial Brush Cap Indication Lamp (Red) (Inside the for Carbon Brush Brush
Summary of the content on the page No. 10
English ASSEMBLY AND OPERATION APPLICATIONS Rotation and hammering function Drilling anchor holes Drilling holes in concrete Hammering function only Crushing concrete, chipping, digging, and squaring (by applying optional accessories) PRIOR TO OPERATION 1. Power source Ensure that the power source to be utilized conforms to the power source requirements specified on the product nameplate. 2. Power switch Ensure that the switch is in the OFF position. If the plug is connected to a receptacl
Summary of the content on the page No. 11
English (2) To attach the tool (SDS max shank), insert it into the hole until it contacts the innermost end of the hole as illustrated in Fig. 2. If you continue to turn the tool with slight pressure, you can feel a spot where there is a hitch. At that spot, pull the grip to the direction of an arrow mark and insert the tool all the way until it hits the innermost end. Releasing the grip reverts the grip and secures the tool in place. (3) To remove the tool, fully pull the grip in Front Cap the
Summary of the content on the page No. 12
English CAUTION: Although this machine is equipped with a safety clutch, if the drill bit becomes bound in concrete or other material, the resultant stoppage of the drill bit could cause the machine body to turn in reaction. Ensure that the main handle and side handle are gripped firmly during operation. 2. How to chisel or crush (Fig. 5) By applying the tool tip to the chiseling or crushing position, operate the rotary hammer by utilizing its empty weight. Forcible pressing or thrusting is unne
Summary of the content on the page No. 13
English Undercover (1) Switching to “hammering” (a) Pull the selector lever, release lock and turn it counterclockwise. (b) Align of the selector lever with on the side of the undercover as illustrated in Fig. 7. Selector Lever (c) Push in the selector lever to lock it. NOTE: Turn the selector lever (do not pull it up) Fig. 7 to check if it is completely locked and make sure that it does not turn. (2) When fixing working positions of tools such as cold chisel, etc., (a) Pull the sel
Summary of the content on the page No. 14
English 6. Warming up (Fig. 11) The grease lubrication system in this unit may require warming up in cold regions. Position the end of the bit so makes contact with the concrete, turn on the switch and perform the warming up operation. Make sure that a hitting sound is produced and then use the unit. CAUTION: Fig. 11 When the warming up operation is performed, hold the side handle and the main body securely with both hands to maintain a secure grip and be careful Taper Shank Adaptor not to twist
Summary of the content on the page No. 15
English (1) Switching to “rotation + hammering” For switching to “rotation + hammering”, follow the same procedures mentioned in [3. When drilling at “rotation + hammering”] in Drill SDS max Page 12. Chuck Shank Grip (2) Attaching chuck adaptor to drill chuck Chuck (Fig. 14) Adaptor (a) Attach the chuck adaptor to the drill Fig. 14 chuck. (b) The SDS max shank of the chuck adaptor is equivalent to the drill bit. Therefore, follow the same procedure as [6. How to install tool] in Page 10 for atta
Summary of the content on the page No. 16
English (2) Mount the core bit shank to the rotary hammer. (Fig. 16) (3) Insert the center pin into the guide plate until it stops. (4) Engage the guide plate with the core bit, and turn the guide plate to left or right so that it does not fall even if it faces downward. (Fig. 17) 2. How to bore (Fig. 18) Fig. 16 (1) Connect the plug to the receptacle. (2) A spring is installed in the center pin. Push it lightly to the wall or the floor straight. Connect all over the surface of the core bit tip
Summary of the content on the page No. 17
English MAINTENANCE AND INSPECTION WARNING: Be sure to switch power OFF and disconnect the plug from the receptacle during maintenance and inspection. 1. Inspecting the drill bits Since use of a dull tool will cause motor malfunctioning and degraded efficiency, replace the drill bit with a new one or resharpening without delay when abrasion is noted. 2. Inspecting the mounting screws Regularly inspect all mounting screws and ensure that they are properly tightened. Should any of the screws be lo
Summary of the content on the page No. 18
English Wear limit No. of carbon brush 77 0.26" (6.5 mm) 0.67" (17 mm) Fig. 21 NOTE: Use HITACHI carbon brush No. indicated in Fig. 21 Replacing carbon brushes: (For parts name, refer to Fig. 20) Loosen the tapping screws and remove the brush cap cover. Then, remove the brush caps and take out the carbon brushes. After replacement, be sure to fasten the brush caps and fix the brush cap cover firmly using the tapping screws. 6. How to replase grease This machine is full air-tight construction
Summary of the content on the page No. 19
English NOTE: The HITACHI Electric Hammer Grease A is of the lower viscosity type. When the supplied grease tube is consumed, purchase from a HITACHI Autorized Service Center. 7. Service and repairs All quality power tools will eventually require servicing or replacement of parts because of wear from normal use. To assure that only authorized replacement parts will be used, all service and repairs must be performed by a HITACHI AUTHORIZED SERVICE CENTER, ONLY. 8. Service parts list CAUTION: Repa
Summary of the content on the page No. 20
English ACCESSORIES WARNING: Accessories for this power tool are mentioned in this Instruction Manual. The use of any other attachment or accessory can be dangerous and could cause injury or mechanical damage. NOTE: Accessories are subject to change without any obligation on the part of the HITACHI. STANDARD ACCESSORIES (1) Case (Molded plastic) (Code No. 318646) ............................................................. 1 (2) Side Handle (Code No. 318574) ....................................
