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This document describes the DEWALT DCD800 Drill and DCD805 Drill/Hammerdrill, versatile tools designed for professional drilling, percussion drilling, and screwdriving applications. These tools are not intended for use under wet conditions or in the presence of flammable liquids or gases. They are professional power tools, and children should not come into contact with them. Supervision is required when inexperienced operators use these tools.
The DCD800 and DCD805 are 18-volt battery-operated tools. The DCD800 functions as a drill/driver, while the DCD805 adds a hammerdrill capability for percussion drilling into masonry. Both tools feature a variable speed trigger switch (1) that allows for precise control over the drilling or driving speed. Squeezing the trigger turns the tool on, and releasing it turns the tool off, engaging a brake that stops the chuck. Continuous use in the variable speed range is not recommended as it may damage the switch.
A forward/reverse control button (2) determines the direction of rotation and also serves as a lock-off button. To select forward rotation, the trigger switch must be released, and the button depressed on the right side of the tool. For reverse, the button is depressed on the left side. The center position locks the tool in the off position. It's crucial to release the trigger before changing the control button's position. A clicking sound may be heard when the tool is first run after changing the direction of rotation, which is normal.
The torque adjustment collar (3) allows for setting the clutch to deliver a specific torque range, suitable for driving and removing various fastener shapes and sizes. The higher the number on the collar, the greater the torque. The DCD805 model also includes a hammer mechanism symbol on the collar for percussion drilling into masonry.
These tools feature dual-range gearing, allowing users to shift between two speeds for greater versatility. Speed 1 (high torque setting) is selected by sliding the gear shifter (4) forward (towards the chuck), while Speed 2 (low torque setting) is selected by sliding the gear shifter back (away from the chuck). The tool must be turned off and allowed to stop completely before changing gears to prevent damage.
A pivoting LED worklight (5) is located on the foot of the tool. It activates when the trigger switch is depressed and has three detent positions: off (17), on (18), and spotlight (19). In the "on" setting, the worklight stays illuminated for up to 20 seconds. If the trigger switch remains depressed, the worklight stays on. The spotlight mode runs for 20 minutes after the trigger switch is released, flashing twice and dimming two minutes before shutting off. Tapping the trigger switch lightly can prevent the spotlight from shutting off.
The keyless chuck (6) with a rotating chuck sleeve (7) allows for one-handed operation to insert or remove drill bits and other accessories. Accessories should be inserted about 19 mm into the chuck and securely tightened by rotating the chuck sleeve clockwise until several ratchet clicks are heard.
For drilling operations, the collar (3) should be turned to the drill symbol. The desired speed/torque range should be selected using the gear shifter (4) to match the planned operation. For wood, twist bits, spade bits, power auger bits, or hole saws are recommended. For metal, high-speed steel twist drill bits or hole saws should be used, with a cutting lubricant, except for cast iron and brass which should be drilled dry. Pressure should be applied in a straight line with the bit, enough to keep the drill biting without stalling the motor or deflecting the bit. The tool should be held firmly with both hands to control twisting action. If a side handle is not equipped, one hand should grip the handle and the other the battery pack.
For hammerdrill operation (DCD805 only), the collar (3) should be turned to the hammerdrill symbol, and the high-speed setting selected by sliding the gear shifter (4) back. Only carbide-tipped or masonry bits should be used. Enough force should be applied to keep the hammer from bouncing excessively, as too much force can lead to slower drilling and overheating. Drilling should be straight, at a right angle to the work, avoiding side pressure that can clog bit flutes. For deep holes, pulling the bit partially out while the tool is running helps clear debris.
For screwdriver operation, the torque adjustment collar (3) should be turned to the desired position, and the speed/torque range selected with the gear shifter (4). The lowest torque setting required to seat the fastener at the desired depth should be used. Fastener accessories are inserted into the chuck like drill bits. Practice runs on scrap material are recommended to determine the proper clutch collar position. Always start with lower torque settings to avoid damaging the workpiece or fastener.
Long drill bits require specific safety measures. They should not be operated at higher speeds than their maximum speed rating, as they are likely to bend. Drilling should always start at a low speed with the bit tip in contact with the workpiece. Pressure should be applied only in direct line with the bit, avoiding excessive pressure to prevent bending, breakage, or loss of control. Workpieces should be secured with clamps or other practical means to ensure stability.
The power tool is designed for long-term operation with minimal maintenance. Regular cleaning is essential for satisfactory operation. To clean the tool, dirt and dust should be blown out of the main housing with dry air, especially around the air vents. Approved eye protection and a dust mask should be worn during this procedure. Solvents or harsh chemicals should not be used on the non-metallic parts of the tool, as they may weaken the materials. A cloth dampened with water and mild soap is recommended. No liquid should enter the tool, and no part of the tool should be immersed in liquid.
The charger and battery pack are not serviceable. The tool itself requires no additional lubrication.
For battery packs, it is recommended to store them in a cool, dry place away from direct sunlight and excessive heat or cold for optimum performance and life. For long-term storage, fully charged battery packs should be stored in a cool, dry place out of the charger. Battery packs should not be stored completely depleted of charge.
The belt hook (8) and magnetic bit holder (10) can be attached to either side of the tool using the provided screw (9) to accommodate left- or right-handed users. If not desired, they can be removed. To move them, the screw must be removed and then reassembled on the opposite side, ensuring it is securely tightened.
General| Power Source | Battery |
|---|---|
| Voltage | 20V |
| Chuck Size | 1/2 in |
| Max Torque | 600 in-lbs |
| Speed Settings | 2 |
| Battery Included | Yes |
| Battery Type | Li-ion |
| Tool Weight | 3.4 lbs |
| No Load Speed | 2000 RPM |
| Length | 7.5 in |
| Type | Cordless Drill/Driver |
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