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INSTRUCTIONS FOR:
BENCH MOUNTED PILLAR DRILL
MODEL No: GDM50B (GDM50BX)
Thank you for purchasing a Sealey product. Manufactured to a high standard this product will, if used according to these instructions
and properly maintained, give you years of trouble free performance.
IMPORTANT: PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS AND CAUTIONS.
USE THIS PRODUCT CORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE
DAMAGE AND/OR PERSONAL INJURY, AND WILL INVALIDATE THE WARRANTY. PLEASE KEEP INSTRUCTIONS SAFE FOR FUTURE USE.
1. SAFETY INSTRUCTIONS
1.1. ELECTRICAL SAFETY. p WARNING! It is the user’s responsibility to read, understand and comply with the following:
You must check all electrical equipment and appliances to ensure they are safe before using. You must inspect power supply leads, plugs and
all electrical connections for wear or damage. You must ensure the risk of electric shock is minimised by the installation of appropriate safety
devices. An RCCB (Residual Current Circuit Breaker) should be incorporated in the main distribution board. We also recommend that an RCD
(Residual Current Device) is used with all electrical products. It is particularly important to use an RCD with portable products that are plugged
into an electrical supply not protected by an RCCB. If in doubt consult a qualified electrician. You may obtain a Residual Current Device by
contacting your Sealey dealer. You must also read and understand the following instructions concerning electrical safety.
1.1.1. The Electricity At Work Act 1989 requires all portable electrical appliances, if used on business premises, to be tested by
a qualified electrician, using a Portable Appliance Tester (PAT), at least once a year.
1.1.2. The Health & Safety at Work Act 1974 makes owners of electrical appliances responsible for the safe condition of those appliances
and the safety of appliance operators. If in any doubt about electrical safety, contact a qualified electrician.
1.1.3. Ensure the insulation on all cables and the product itself is safe before connecting to the mains power supply.
See 1.1.1. & 1.1.2. above and use a Portable Appliance Tester (PAT).
1.1.4. Ensure that cables are always protected against short circuit and overload.
1.1.5. Regularly inspect power supply leads and plugs for wear or damage and connections to ensure that none
is loose.
1.1.6. Important: Ensure the voltage marked on the product is the same as the electrical power supply
to be used, and check that plugs are fitted with the correct capacity fuse. A 13 amp plug may
require a fuse smaller than 13 amps for certain products (subject to 1.1.10. below).
1.1.7. DO NOT pull or carry the powered appliance by its power supply lead.
1.1.8. DO NOT pull power plugs from sockets by the power cable.
1.1.9. DO NOT use worn or damage leads, plugs or connections. Immediately replace or have repaired by
a qualified electrician. Where a U.K. 3 pin plug with ASTA/BS approval is fitted, in case of
damage, cut off and fit a new plug according to the following instructions (discard old plug safely).
(UK only - see diagram at right). Ensure the unit is correctly earthed via a three-pin plug.
a) Connect the GREEN/YELLOW earth wire to the earth terminal ‘E’.
b) Connect the BROWN live wire to the live terminal ‘L’.
c) Connect the BLUE neutral wire to the neutral terminal ‘N’.
After wiring, check there are no bare wires, that all wires have been correctly
connected, that the cable outer insulation extends past the cable restraint and that the cable restraint is tight.
Double insulated products are often fitted with live (BROWN) and neutral (BLUE) wires only. Double insulated products are always
marked with this symbol . To re-wire, connect the brown & blue wires as indicated above. DO NOT connect the brown or blue
wires to the earth terminal.
1.1.10. NOTE: If this product requires more than a 13 amp electrical supply, then NO plug is fitted. You must therefore contact a qualified
electrician to ensure a 30 amp fused supply is available. We recommend you discuss the installation of a industrial round pin plug and
socket with your electrician.
1.1.11. Cable extension reels. When a cable extension reel is used it should be fully unwound before connection. A cable reel with an RCD
fitted is recommended since any product which is plugged into the cable reel will be protected. The section of the cores in the cable
is important and should be at least 1.5mm², but to be absolutely sure that the capacity of the cable reel is suitable for this product and
for others that may be used in the other output sockets, the use of 2.5mm² section is recommended .
Blue
Neutral
wire
Yellow & Green
Earth wire
Cable
restraint
REPLACEMENT FUSES MUST
BE OF THE SAME TYPE AND
RATING AS THE ORIGINAL
Brown
Live
wire
1.2 GENERAL SAFETY
p WARNING! Disconnect drill from mains power before changing accessories, servicing or performing any
maintenance.
3 Maintain the drill in good condition (use an authorised service agent).
p WARNING! Keep all guards and holding screws in place, tight and in good working order. Check regularly
for damaged parts. A guard, or any other part, that is damaged must be repaired or replaced before the
tool is next used, to ensure that it will operate properly and perform its intended function. The safety
guard is a mandatory fitting where the drill is used in premises covered by the Health & Safety at Work Act.
3 Check alignment of moving parts and check for possible broken parts.
3 Replace or repair damaged parts. Use recommended parts only. Non-authorised parts may be dangerous and
will invalidate the warranty.
3 Ensure the set screws of the head frame are screwed tight before using the drill.
3 Secure the drill to a supporting structure to avoid the machine tipping, sliding or walking. Drill is designed for
use with drill bits only. No other accessory may be used.
3 Ensure the chuck is securely fastened to the spindle.
3 Remove adjusting keys and wrenches from the machine and working area before switching on.
3 Use clamps or a vice (not included) to secure the workpiece. Available from your Sealey dealer.
DO NOT secure the workpiece by hand.
3 Refer to speed chart for recommended drilling speeds.
p WARNING! Always wear approved eye or face protection when operating this drill. Use a face or dust
mask if dust is generated.
p WARNING! DO NOT wear gloves when drilling.
Original Language Version
GDM50B (GDM50BX) Issue: 3 - 05/03/12
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3 Others in the workplace should keep a safe distance from the drill, especially when it is in operation.
3 Keep the work area as childproof as possible by using padlocks and master switches.
3 Keep drill bits clean and sharp for best and safest performance. Follow the instructions for lubrication and changing accessories.
3 Remove ill fitting clothing. Remove ties, watches, rings and other loose jewellery and contain long hair.
3 Locate the drill in a suitable working area, keep area clean and tidy and free from unrelated materials. Ensure there is adequate lighting.
3 Maintain correct balance and footing. Ensure the floor is not slippery and wear non-slip shoes.
3 Secure non-stable work piece with a clamp, vice or other adequate holding device.
3 Avoid unintentional starting.
7 DO NOT use the drill for a task it is not designed to perform.
7 DO NOT allow untrained persons to operate the drill.
7 DO NOT get the drill wet or use in damp or wet locations or areas where there is condensation.
7 DO NOT operate the drill if damaged.
7 DO NOT use drill in an area where paint fumes, solvents or flammable liquids pose a potential hazard. Keep flammable material away from
the drill when operating. Flammable waste, such as wipes or cleaning rags, must be placed in a closed metal container and disposed of
correctly.
7 DO NOT exceed the rated capacity of the drill.
7 DO NOT operate the drill if any parts are missing as this may cause failure or personal injury.
7 DO NOT leave the drill operating unattended.
7 DO NOT operate the drill when you are tired, under the influence of alcohol, drugs or intoxicating medication.
7 DO NOT pull the cable from the power supply.
3 When not in use switch the drill off, remove plug from the power supply and do not leave until the tool has come to a complete stop.
3. TECHNICAL SPECIFICATION
2. DESCRIPTION
The GDM50B 5 speed bench drill is suitable for light industrial, agricultural and woodworking applications. The drill is fitted with a flip-up safety
guard and “No Volt Release” switch which prevents accidental restart after a mains power interruption. A rack and pinion feed shaft with preset depth
control for repetitive work is also included. Work clamps are also available for this drill, contact your local Sealey dealer for information.
4. CONTENT
4.1. Package content
Unpack the parts listed below and check to ensure they are in good condition. Any queries must be reported to your dealer immediately.
3 Head Assembly 3 Base 3 Chuck and Key
3 Column with Flange 3 Feed Handles and Knobs (3) 3 Table Arm, Bracket and Worm
3 Adjusting Handle with Set Screw (table) 3 Table 3 Rack and Rack Ring
3 Pivoted Clamp Bolts (2 - table arm & bracket) 3 Bolts and Washers (4) 3 Screw (upper pulley cover)
3 Safety Guard 3 Arbor 3 Set Screws (2)
3 Wedge 3 Hex. Keys (2)
MODEL No:
GDM50B/GDM50BX
Drilling Capacity (Chuck Size):
16mm
Spindle Nose Taper:
MT2
Swing:
314mm
Spindle centre to column:
127mm
Spindle travel:
60mm
Number of speeds:
5
Speed range:
460-2890rpm
Maximum Distance Spindle to Table:
275mm
Maximum Distance Spindle to Base:
385mm
Working Table Surface size:
Ø250mm
Working Base Surface size:
155 x 165mm
Overall Base Size:
340 x 210mm
Column diameter:
60mm
Collar diameter:
55mm
Overall Height:
745mm
Motor Power:
220W - 230V
Input Power:
370W - 230V
Weight:
35kg
Optional Keyless Chuck 16mm:
GDMX/KC
Original Language Version
GDM50B (GDM50BX) Issue: 3 - 05/03/12
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p WARNING! Ensure the drill is unplugged from the mains power supply before commencing.
6.1. Install drill bit
6.1.1. Insert drill bit into chuck jaws to 1" (25mm) deep (avoid inserting small bits too far) and centre bit in chuck before tightening.
6.2. Adjusting the table
5.2.1. To adjust table up or down, loosen the clamp bolt (fig.2.B) then turn the bracket handle. Once at correct height tighten clamp bolt
(fig.2.B).
6.2.2. To adjust table tilt, loosen the work table bolt (fig.2.C), adjust to the desired angle using the angle scale, then retighten.
6.2.3. To turn the table around the column, loosen the rack collar slightly, then loosen the work table bolt.
Turn the table to the desired position then secure the bolt and rack collar.
6.3. Adjusting the speed
6.3.1. Open the pulley case and loosen the belt tension lock screw (fig.6.A).
6.3.2. Choose the speed for drilling operation (see drill speed chart) and move the belt to the correct
position for that speed, as shown on the chart inside the pulley cover.
6.4. Belt tension
6.4.1. With the belt tension lock screw (fig.6.A) loose and using hand pressure on the motor, set tension so that belt give is no more than
1/2" (13mm). Tighten lock screw.
6.5. Positioning the workpiece
6.5.1. Use a piece of wood to rest the workpiece on. The drill bit may break through the workpiece and damage the table otherwise.
The wood should rest on the table so that one end of it is against the left side of the column. When the drill bit breaks through the
workpiece, it will contact the wood and cause it to spin. Resting the wood against the column will help prevent this.
6.5.2. For small workpieces that cannot be clamped to the table, use a drill vice (not included). Vice must be clamped or bolted to table.
6.6. Setting the drill depth
6.6.1. Use the scale on the side of the drill head near the drill handle.
6.6.2. Loosen locking screw (fig.5.D) and set the scale to the depth required. Tighten locking screw.
6.6.3. When ready to drill, simply pull the feed handle. The drill will stop at the set depth.
6. OPERATING INSTRUCTIONS
Note: Figures are illustrative and may differ in detail from your drill.
5.1. Assembly
5.1.1. Place the column assembly on the base, align holes and secure with the four bolts and washers provided.
5.1.2. Install the table bracket onto the column together with the rack (fig.1), engaging gear in bracket with rack.
5.1.3. Install the rack collar and tighten firmly (fig.2).
5.1.4. Install the table adjusting handle (fig.2.A) and pivoted clamp bolt (the longer of the two - fig.2.B).
5.1.5. Tighten the handle set screw (with the hex. key provided) and the bracket clamp bolt.
5.1.6. Install the table and table pivoted clamp bolt (fig.3).
5.1.7. Carefully place the head assembly over the column and slide it into position. Align head with base.
5.1.8. Fit the two set screws in the right side of the head to lock it into position and tighten with hex. key (fig.4).
5.1.9. Screw the three feed handles and knobs to the hub of the pinion shaft (fig.5.A).
5.1.10. To install chuck open the chuck jaws completely by turning the chuck key counter-clockwise. Place a piece of wood on the drill table
(to prevent the chuck from getting damaged).
5.1.11. Insert larger tapered end of arbor (fig.5.B) into drill spindle, fit chuck to protruding end of arbor and hold in place.
5.1.12. Turn feed handles to bring nose of chuck down onto wood (fig.5). Firmly pull on feed handle to seat arbor taper in spindle and chuck.
5.1.13. Loosen clamp screw on safety guard mounting collar, pass guard up over chuck and fit collar round flange of quill shaft. Ensure guard
pivot is central and tighten clamp screw (see fig.7).
5.2. Drill mounting
5.2.1. For stability and safety it is important that the drill base is securely screwed or bolted to the workbench.
5.2.2. Ensure that the mounting surface is capable of supporting the drill together with the weight of the heaviest likely workpiece
.
5. ASSEMBLY
fig. 1
fig. 2
fig. 3 fig. 4
fig. 5
fig. 6
Original Language Version
GDM50B (GDM50BX) Issue: 3 - 05/03/12
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PROBLEM POSSIBLE CAUSE SOLUTION
Excessive noise 1. Incorrect belt tension 1. Adjust tension
2. Spindle is dry 2. Disassemble spindle/quill and lubricate
3. Pulley is loose 3. Tighten pulley
4. Bearing damaged 4. Replace the bearing
Excessive drill wobble 1. Chuck is loose 1. Tighten the chuck by pressing it against the table (see 5.1.10 - 5.1.12)
2. Bearing or spindle shaft is worn 2. Replace worn part
3. Chuck is worn 3. Replace the chuck
Drill binds in the 1. Feed pressure is wrong 1. Apply less pressure
workpiece 2. Belt is loose 2. Adjust tension
3. Drill is loose 3. Tighten the drill with the key
4. Speed is too fast 4. Change the speed
Drill burns or smokes 1. Speed is too fast 1. Change the speed
2. Chips are not discharging 2. Clean the drill
3. Drill bit is dull 3. Use a new bit
4. Lubrication needed for work 4. Lubricate while drilling
5. Feed pressure is wrong 5. Apply less pressure
Table is difficult to raise 1. Lubrication is needed 1. Lubricate with light oil
2. Rack is bent 2. Straighten the rack
9. TROUBLESHOOTING
8.1. Clean the tool after each use. A coat of automobile-type wax applied to the table and
column will help to keep the surfaces clean.
8.2. Blow out any dust that may have accumulated in the motor.
8.3. Periodically lubricate the table elevation rack/gear/worm mechanism.
8. MAINTENANCE
7. DRILL SPEEDS
Drill Speed (rpm)
Drill Dia. (mm)
Steel Cast Iron Iron Alum. & Copper
3 1820 2580 2580 2580
4 1350 1820 1820 2580
5 1290 1350 1350 2580
6 970 1290 1290 2580
7 830 970 970 2580
8 830 970 970 2580
9 500 970 830 1820
10 500 830 830 1820
11 500 830 830 1820
12 420 830 500 1820
13 420 500 500 1350
14 420 500 500 1350
16 320 500 500 1290
18 320 420 420 1290
20 280 320 320 970
22 210 320 280 970
25 120 280 210 830
fig. 7
The chart below shows recommended drill speeds for various bit diameters and materials.
Select the available drill speed that is the same as, or nearest to, the one recommended for
the task in hand.
NOTE: It is our policy to continually improve products and as such we reserve the right to alter data, specifications and component parts without prior notice.
IMPORTANT: No liability is accepted for incorrect use of this product.
WARRANTY: Guarantee is 12 months from purchase date, proof of which will be required for any claim.
INFORMATION: For a copy of our latest catalogue and promotions call us on 01284 757525 and leave your full name and address, including postcode.
01284 757500
01284 703534
Sole UK Distributor, Sealey Group,
Kempson Way, Suffolk Business Park,
Bury St. Edmunds, Suffolk,
IP32 7AR
www.sealey.co.uk
Web
email
Original Language Version
GDM50B (GDM50BX) Issue: 3 - 05/03/12
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