Silverline 633921 Manual Download

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850W SDS Plus Hammer Drill

silverlinetools.com

Safety Clutch

In the event that a drill bit or core drill becomes locked in the workpiece while operating and

cannot rotate, or is forced to operate at a very low rotational speed, the safety clutch will disengage

the drive.

In this event quickly release the trigger which will help prevent injury and reduce wear on the

safety-clutch mechanism.

After the safety clutch has activated, completely recheck all equipment is correctly set up and the

drill bit or core drill is not badly worn or damaged. It may be necessary to work at a slower rate. In

some instances you may find the drill is not suitable especially if using large core drills.

WARNING:

Do not rely on the safety clutch. Always configure your equipment for safe use so that

the safety clutch will not operate.

Drilling wood and metal

Attaching the Keyed Chuck

A conventional 13mm (1/2”) keyed chuck is supplied with this product.
To attach the Keyed Chuck (18):

1. Screw the SDS Plus Arbor (16) to the Keyed Chuck (18) (Fig. I)
2. Screw the Arbor Screw (20) through the Chuck into the Arbor (16) (Fig. II)

Note:

the Arbor Screw has a left handed thread and therefore will tighten by turning anticlockwise

and slacken turning clockwise.
3. Insert the chuck assembly into the SDS Plus Chuck (1)
4. Insert a conventional drill bit for either wood or metal into the Chuck and tighten the Chuck with

the Chuck Key (17). See specification for maximum drilling capacity in wood and metal

CAUTION:

The keyed chuck is not for masonry bits and will be damaged if used in hammer mode.

Always use SDS Plus masonry bits fitted directly into the SDS Plus Chuck for masonry use.

Drilling Wood

• Use rotary drill mode only
• Ensure drill bits are suitable for wood and are within the maximum capacity of this drill

Drilling Metal

• Use rotary drill mode only
• To ensure accuracy, mark the intended hole position using a hammer and centre punch
• Ensure drill bits are suitable for the grade of metal being drilled, and are within the maximum

capacity of the drill

• To ensure efficient cutting, and prolong drill bit life, use a suitable lubricant/cutting fluid

CAUTION:

Applying excess pressure does not result in faster or more efficient drilling. If the

pressure applied to the drill has a noticeable effect on the speed of the drill then reduce the

pressure. Overloading the drill will reduce its service life.
• As the drill bit penetrates the material being drilled, it may 'catch' or 'snag'. This can cause the

machine to suddenly 'kick', to prevent any possibility of injury always hold the drill securely, use

the auxiliary handle, and use sharp drill bits

• Always ensure material is secure. If appropriate use a vice or clamp to hold the work, always keep

two hands on the drill

Accessories

A range of accessories for this product are available from your Silverline dealer including SDS

Plus drill and chisel bits. Carbon brushes are available from www.toolsparesonline.com or your

Silverline dealer.

Maintenance

WARNING:

Always remove the plug from the mains power supply before carrying out any

maintenance/cleaning.

Gearbox Maintenance

After every 6 hours of use (approx.), the gearbox must be regreased
1. Use the Gearbox Pin Spanner (12) to unscrew the Gearbox Cover (4)
2. Use a spatula or similar instrument to apply grease into the gearbox cavity until

it is full

3. Be careful not to scratch or damage the mechanism
4. Replace the Gearbox Cover (4)

NOTES:

• A Pot of Grease (13) is supplied for the first few regreases but additional grease will be required.

When purchasing additional grease, select a general purpose lithium-based grease

• Do not over-tighten the gearbox cover or overfill the gearbox with grease
• If you are not sure how to change the grease or what grease to use, take your drill to your dealer or

the nearest authorised service centre and ask a qualified person to replace the grease

Cleaning

• Keep your machine clean at all times. Dirt and dust will cause internal parts to wear quickly,

shortening the machine’s service life. Clean the body of your machine with a soft brush or dry

cloth. If available, use clean, dry, compressed air to blow through the ventilation holes

Brushes

• This product is supplied with a spare pair of Brushes (19)
• Over time the carbon brushes inside the motor may become worn
• Excessively worn brushes may cause loss of power, intermittent failure, or visible sparking
• To replace the brushes, remove the Brush Access Cover (7) and the cover on the opposite side.

The worn brushes can then be withdrawn, and replaced with new. Always replace worn brushes

in pairs. Refit the brush access covers. Alternatively, have the machine serviced at an authorised

service centre

Storage

After use, return the drill and accessories to the supplied case and store in a damp-free environment,

out of reach of children.

Disposal

Always adhere to national regulations when disposing of power tools that are no longer functional

and are not viable for repair.
• Do not dispose of power tools, or other waste electrical and electronic equipment (WEEE), with

household waste

• Contact your local waste disposal authority for information on the correct way to dispose of power

tools