SEALEY SM2502 Mini Drilling Milling Machine Installation Guide

MINI DRILLING/MILLING MACHINE
MODEL NO: SM2502

SM2502 Mini Drilling Milling Machine

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 & CAUTIONS. USE THE 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. KEEP THESE INSTRUCTIONS SAFE FOR FUTURE USE.

SAFETY

1.1. ELECTRICAL SAFETY
‰ WARNING! It is the user’s responsibility to check the following:
Check all electrical equipment and appliances to ensure that they are safe before using. Inspect power supply leads, plugs and all electrical connections for wear and damage. Sealey recommend that an RCD (Residual Current Device) is used with all electrical products. Electrical safety information. It is important that the following information is read and understood:
Ensure that the insulation on all cables and on the appliance is safe before connecting it to the power supply.
Regularly inspect power supply cables and plugs for wear or damage and check all connections to ensure that they are secure.
Important: Ensure that the voltage rating on the appliance suits the power supply to be used and that the plug is fitted with the correct fuse.
DO NOT pull or carry the appliance by the power cable.
DO NOT pull the plug from the socket by the cable.
DO NOT use worn or damaged cables, plugs or connectors. Ensure that any faulty item is repaired or is replaced immediately by a qualified electrician.
If the cable or plug is damaged during use, switch off the electricity supply and remove from use.
Ensure that repairs are carried out by a qualified electrician.
1.2. GENERAL SAFETY
‰ WARNING! Disconnect the drilling/milling machine from the mains power, and ensure the cutting tool or chuck is at a complete standstill before attempting to change accessories, service or perform any maintenance.
Maintain the drilling/milling machine in good condition (use an authorised service agent).
Replace or repair damaged parts. Use recommended parts only. Unauthorised parts may be dangerous and will invalidate the warranty
Locate the drilling/milling machine in a suitable area. Ensure the surface is flat and firm.
Keep area clean and tidy and free from unrelated materials, and ensure there is adequate lighting.
Keep the drilling/milling machine clean for best and safest performance and check moving parts alignment regularly.
‰ WARNING! Before each use check that drill/chuck/cutting tool is secure and not worn/damaged. If worn/damaged replace immediately.
‰ WARNING! Keep guard and holding fixings in place, tight and in good working order. Check regularly for damaged parts. A guard, or any other part, that is damaged must be replaced with a new one, to ensure that it operates properly and performs its intended function, before the tool is used. The safety guard is a mandatory fitting where drilling/milling machine is used in premises covered by the Health & Safety at Work Act.
Remove adjusting keys and wrenches from the machine and its vicinity before turning it on.
‰ WARNING! Wear approved safety eye protection and, if oil mist is generated, respiratory protection.
Remove ill fitting clothing. Remove ties, watches, rings and other loose jewellery and contain long hair.
Keep hands and body clear of the work table when operating the drilling/milling machine.
Maintain correct balance and footing. Ensure the floor is not slippery and wear non-slip shoes.
Always clamp workpiece securely to the table or hold securely in a vice which is firmly mounted to the table.
DO NOT hold a workpiece by hand.
Keep children and unauthorised persons away from the working area.
‰ WARNING! DO NOT switch the drilling/milling machine on whilst the drill or cutting tool is in contact with the workpiece. Bring the drill or cutting tool gradually to the workpiece. Avoid unintentional starting of the drilling/milling machine.
DO NOT force the drilling/milling machine to achieve a task it was not designed to perform.
DO NOT allow untrained persons to operate the drilling/milling machine.
DO NOT get the drilling/milling machine wet or use in damp or wet locations or areas where there is condensation.
‰ WARNING! DO NOT use drilling/milling machine where there are flammable liquids, solids or gases such as petrol, paint solvents, waste wiping rags etc.
DO NOT operate the drilling/milling machine if any parts are missing or damaged as this may cause failure and/or possible personal injury.
DO NOT remove the safety guard whilst in use.
DO NOT attempt to remove a workpiece until the drill or cutting tool has stopped rotating.
DO NOT touch the workpiece close to the cut as it will be very hot. Allow to cool.
DO NOT leave the drill or cutting tool operating unattended.
DO NOT operate the drill or cutting tool when you are tired or under the influence of alcohol, drugs or intoxicating medication.
When not in use switch the drilling/milling machine off and isolate from the power supply.

 INTRODUCTION

Bench mounting mini drilling/milling machine with the flexibility to handle most materials. Features include a 350W motor, variable speed drive, working table with T-slots to enable clamping of workpieces and metric graduated compound scales. The machine also incorporates a tilting column which allows drilling/milling of workpiece at ±45° from vertical. Supplied with 13mm chuck accessory kit for adjusting and setting. An optional stand is available, order Model No. SM3002ST.

SPECIFICATION

Model No:…………………………………………………. SM2502
Cross Axis: …………………………………………………. 100mm
Drilling Capacity (Chuck Size):………………………… 13mm
End Mill Capacity: …………………………………………. 16mm
Face Mill Capacity: ………………………………………… 30mm
Fuse Rating:………………………………………………………. 5A
Headstock Travel: ……………………………………….. 180mm
Longitudinal Axis: ………………………………………… 220mm
Motor Power: ………………………………………………….350W
Spindle Nose Taper: …………………………………………. MT3
Spindle Speed – High Range:……………………. 0-2500rpm
Spindle Speed – Low Range:…………………….. 0-1100rpm
Spindle Tilt Angle: …………………………………………….±45°
Supply: …………………………………………………………..230V
T-Slot: …………………………………………………………. 12mm

CONTENTS

| Mini drilling/milling machine
---|---
1| Large wrench
2| Drill chuck and taper shank
3| Oil can
4| Locking pin
5| 4 hex keys (3,4,5,6mm)
6| Socket head wrench
7| 3 double ended spanners 8-10,14-17,17-19
8| Chuck key
9| 2 handles
10| ‘T’ nuts
11| Fuse
12| Draw Bar

‰ WARNING! At least two people will be required to move the machine. Observe good lifting practice.
4.1. Unpack the product and check that all components and tools are present and undamaged. If any problem is noted contact your supplier immediately.
NOTE: The machine has been coated with heavy grease to protect it in shipping. Remove the coating with commercial degreaser, kerosene or similar solvent before operating. Avoid getting the solvent on rubber parts. After degreasing coat the machined surfaces with a medium consistency machine oil.
4.2. MOUNTING THE MACHINE
4.2.1. Locate the machine on a flat, level and strong work surface.
DO NOT locate in direct sunlight or where heavy dust or moisture is present.
4.2.2. Before finalising the mounting position consider the full extent of travel of the longitudinal table leaving clearance for the operators hand. Also consider access to the column pivot bolt and the tilting of the column to 45° in either direction.
4.2.3. Drill the location holes in accordance with the dimensions shown in fig.2 and bolt the machine to the bench using four M10 nuts and bolts (Not provided).

SET-UP & OPERATION

‰ WARNING! Before operating the drilling/milling machine ensure you are wearing approved safety goggles and gloves to protect you from swarf and metal particles. If using cutting oil or coolant a face mask may be necessary to avoid breathing any vapour generated. Ensure that all other safety instructions in section 1 are followed carefully.
5.1. SETTING UP FOR MILLING
(Disconnect the machine from the power supply while setting up.) The machine is supplied without milling attachments. (See section 9 for details.) Contact your local Sealey stockist for a full range of accessories.
5.2. ENGAGING VERTICAL FINE FEED
Prior to milling, activate the fine feed wheel ( see fig.3-5 ) by pushing the drill feed hub inwards toward the body of the machine so that the two sets of castellations on the hub shaft engage together and lock the movement of the drill feed. (See fig.4) This action automatically engages the fine feed wheel. Set the depth stop to its maximum so that it does not interfere with downward movement when setting the height of the milling tool. (See fig.3-19).
5.3. MOUNTING THE CUTTING TOOL
If the drill chuck and arbor are currently mounted, remove them by loosening the nut on the arbor bolt by two turns and giving it a tap with a rubber mallet. (The arbor bolt appears at the top of the spindle shaft and can be accessed by pulling off the plastic cap (See figs.3-4 and 4-A). Ensure that the drill chuck and arbor are supported as they are removed. Select the cutting tool for the work in hand and the appropriate arbor or collet.

Wear protective gloves at all times especially when handling the cutter. Introduce the cutter assembly into the spindle sleeve and hold it in place whilst the arbor nut and bolt are tightened by hand. Insert the locking pin provided into the hole in the right hand side of the head adjacent to the spindle (See fig.4-D) to prevent the spindle rotating. Tighten the arbor bolt with a spanner (do not overtighten). Remove the locking pin and replace the plastic cap.

5.4. ATTACHING THE WORKPIECE
The main bed of the machine has 3 inverted ‘T’ slots in it for fixing the workpiece or any vice/clamping arrangement used to hold the workpiece. The dimensions of the ‘T’ slots and ‘T’ nuts are shown in fig.5. A 42 piece clamping kit is available as an optional extra. Part No. SM2502CK.
5.5. SETTING AND LOCKING THE CUTTER HEIGHT
Once the workpiece is in place the rapid drill feed can be used to bring the cutter closer to the workpiece but the final setting of the cutter height must be done with the fine feed wheel. To ensure accuracy during milling the cutter height setting must then be  locked by tightening the head lock lever. (see fig.9)
5.6. LOCKING TABLE TRAVEL
To eliminate the possibility of inadvertently moving one feed whilst operating the other you should lock the table feed not being used. To lock the longitudinal table tighten the longitudinal feed lock lever on the front of the table (See fig.3-10). To lock the cross feed table tighten the cross feed lock lever to be found on the right hand side of the saddle. (See fig.3-12).
5.7. SETTING THE COLUMN ANGLE
If required, the column carrying the head can be pivoted and locked at any angle between vertical and 45° in either direction as indicated in fig.6. Before loosening the pivot bolt (See fig.7) the weight of the column must be firmly supported, preferably by a second person. Once the bolt is loose, lower the column to the required angle with reference to the scale provided and fully tighten the bolt.
‰ WARNING. Support the column at all times during this procedure as once the pivot bolt is loose the head could fall suddenly in either direction causing damage to the machine, associated equipment, or injury to persons.
5.8. CALIBRATED FEED
Each feed wheel has an adjustable calibration ring situated on the feed shaft immediately behind the wheel. The rings can be rotated by hand to the desired mark. The calibration rings for each of the three feeds are marked in increments of 0.025mm. There are 60 increments to one full rotation of each feed wheel. One full rotation of a feed wheel will advance the cutter 1.5mm. Each ring can be rotated allowing it to be reset to zero or any mark required for a specific cut. The linear scales on the machine are marked in millimetres.
5.9. IMPORTANT: Avoid subjecting drills and cutting tools to excessive strain. Do not apply undue force on the handle in order to cut the workpiece. Maintain a controlled cutting speed through the workpiece.
5.10. SAFETY GUARD
After the workpiece has been fixed in place on the bed, but before switching on, ensure that the clear plastic guard (See fig.3-8 ) is fixed in place.
5.11. SELECT HIGH OR LOW GEAR
The gear lever is situated on the left hand side of the head and selects either high or low gear.( see fig.8-D)Select low gear (0 to 1100 rpm) by pushing the lever towards the back of the machine. Select high gear (0 to 2500 rpm) by pulling the lever towards the front of the machine.
WARNING! Do not attempt to change gear whilst the machine is operating as this will result in damage to the gearbox.
Only change gear when the machine is at a complete standstill. As a general rule of thumb harder materials will require a lower milling/drilling speed. The speed is infinitely variable within each gear and is controlled by the rotary knob on the control box. See the next section for detailed operation of the speed control.
5.12. MAIN ON/OFF SWITCH WITH SPEED CONTROL AND EMERGENCY SHUT OFF
Connect the machine to the mains power. The rotary speed control must be set in the ‘I’ position otherwise the machine will not start. If it is not in this position rotate the knob anticlockwise until it clicks and stops (fig.3-6). Release the emergency ‘OFF’ switch cover by pushing the large button upwards to release the latch on the yellow housing (fig.3-20).
Hinge the cover upwards to reveal the red ‘off’ button for every day use. The green lamp under the rotary speed switch will now be illuminated indicating that the machine can now be switched on (see fig.3-7). Rotate the rotary speed switch slowly clockwise. As the knob is turned a click will be heard and the motor will start. As the knob is turned further the speed will increase. Set the knob to the desired speed.
5.13. STOP MODES
There are three ‘stop’ modes as described below:
A). To stop the machine for a short while and then restart, simply return the rotary speed switch to the ‘I’ position. When you are ready to restart, rotate the switch clockwise to the desired speed.
B). When the yellow emergency stop cover is open the machine can be stopped by pressing the smaller red stop button within the yellow housing. When this button is used an orange reset light will illuminate on the side of the switch box. This means that the rotary speed switch must be returned to the ‘I’ position before you can restart the machine.
C). In an emergency hit the large red emergency button which automatically shuts the yellow cover and cuts the electrical supply to the machine. Before the machine will start again the rotary speed switch must be returned to the ‘I’ position and the emergency switch cover must be released by pushing the large red button upwards.

5.14. SETTING UP FOR DRILLING
‰ WARNING! Disconnect the machine from the power supply while setting up.
5.15. ENGAGING RAPID DRILL FEED
The rapid drill feed is controlled with the three rods emerging from the hub on the right hand side of the head (fig.3-2). The rapid drill feed will not operate if the vertical fine feed wheel used for milling is still engaged. To make the rapid drill feed operative take hold of the central hub and pull it outwards to disengage the castellations on the hubs central shaft (fig.4).
5.16. DEPTH STOP GAUGE
The depth stop gauge (See fig.8-C) consists of a lockable bar which can be slid up and down the main column beneath the head. The depth stop can be set in relation to the graduated scale attached to the side of the main column. Alternatively, set the drilling depth using the rapid drill feed then move the depth stop up to the head and lock it with the lever. (see fig.8-A)
5.17. MOUNTING THE CHUCK AND ARBOR
If the milling cutter and arbor are currently mounted, remove them by loosening the arbor bolt by two turns and giving it a tap with a rubber mallet. The arbor bolt appears at the top of the spindle shaft and can be accessed by removing the cap (fig.3-4 & 4-A). Ensure that the milling cutter and arbor are supported as they are removed (Wear protective gloves.) Insert the chuck arbor into the bottom of the spindle shaft and retain it with the arbor bolt. Do not over tighten. The drill chuck is a shallow taper fit onto the end of the drilling arbor. Using the chuck key open the jaws of the chuck until they withdraw inside the chuck body. Place a piece of wood onto the bed and position the chuck on it below the spindle shaft. Using the drill feed, wind the spindle shaft down until the arbor enters the chuck. Exert firm but not excessive downward pressure on the chuck to retain it on the arbor.
5.18. DRILL BITS (not supplied)
Insert an appropriate drill bit into the chuck and tighten the chuck with the chuck key.
5.19. ATTACHING THE WORKPIECE
The main bed of the machine has 3 inverted ‘T’ slots in it for fixing the workpiece or any vice/clamping arrangement used to hold the workpiece. The dimensions of the slots are shown in fig.5 in order to choose appropriate fixings. A 42 piece clamping kit is available as an optional extra. Part No. SM2502CK.
5.20. DRILLING GUARD
When drilling ensure that the guard is in place (See fig.3-8).
5.21. SPEED CONTROL AND ON/OFF OPERATION.
Refer to the above for the operation of the main ON/OFF switch and speed setting.

MAINTENANCE

‰ WARNING! Ensure the drilling/milling machine is unplugged from the mains power supply before attempting any maintenance.
6.1. Lubricate the machine before every use. See lubrication points on fig.11.
6.2. Clean the machine after each use.
6.3. Clean and coat the cross lead screw with oil weekly.
6.4. Lubricate the bearing,worm and worm shaft monthly.
6.5. Check that the table is horizontal periodically.
6.6. Adjust the accuracy of the cross feed, longitudinal feed and head travel on a monthly basis. Any wear or slack can be taken up by adjusting the position of the appropriate mitre strip using a hex key and spanner. Adjust the longitudinal feed using the  adjusters marked ‘L’ in fig.9. Loosen the locking nuts on all four adjusters and back them off. Advance the adjusters until they are felt to make firm contact with the mitre wedge, ensuring that they are all tightened to the same torque. Operate the feed wheel to check the movement of the bed but do not force the movement. Back off the adjusters by an eighth of a turn and tighten the locknuts. Check that the table movement is smooth. If the movement is still tight, back the adjusters off a further eighth turn and tighten the adjuster nuts.
6.6.1. Adjust the cross feed using the two adjusters marked ‘C’ in fig.9.
6.6.2. Adjust the head movement using the four adjusters marked ‘H’ in fig.10
6.6.3. Check that the column is vertical and that the column pivot nut is tight.

TROUBLESHOOTING

Faulty switch or motor.
Overload protection has operated.| Decrease feed speed.
Replace faulty part. (See parts list).
Return speed switch to ‘I’ position and restart.
Spindle bearing getting hot.| No lubrication.
Spindle bearing too tight.| Apply grease. Loosen the bearing.
Unbalanced table travel.| Excessive play in table movement.
Cut depth too deep for cutting tool.| Adjust the mitre strips. (Refer to section 7.6). Decrease the depth of the cut.
Spindle shakes during use.| Spindle bearing gap is too wide.
The chuck is loose. Cutter is blunt.
Workpiece is loose.| Reduce the gap or replace the bearing. Re-seat the chuck in the arbor.
Sharpen or replace the cutter.
Secure the workpiece
Vertical fine feed not functioning.| Clutch is loose.
Worm and worm shaft are worn.| Tighten the clutch.
Replace worn parts. (See parts list).
Realign and tighten fixing.
Push drill feed hub inwards (See section 4.1)

ENVIRONMENT PROTECTION
**** Recycle unwanted materials instead of disposing of them as waste. All tools, accessories and packaging should be sorted, taken to a recycling centre and disposed of in a manner which is compatible with the environment. When the product becomes completely unserviceable and requires disposal, drain any fluids (if applicable) into approved containers and dispose of the product and fluids according to local regulations.

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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 is required for any claim.

Sealey Group, Kempson Way, Suffolk Business Park, Bury St Edmunds, Suffolk. IP32 7AR
01284 757500
[email protected]
www.sealey.co.uk

© Jack Sealey Limited
Original Language Version
CP20VTP Issue 1 25/10/21

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