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
Original Language Version
GDM50B (GDM50BX) Issue: 3 - 05/03/12
