Usage: Xpo Tool 62852 Duplex Grinding Machine User Manual

Overview

The 62852 Duplex Grinding Machine is a compact bench grinder designed for deburring, grinding, and sharpening steel and steel-alloy workpieces. Its two grinding wheels allow different grinding tasks to be performed at one workstation, making it suitable for workshops, garages, and metalworking areas.

Use the machine only for its intended purpose and follow the operating and safety instructions before starting work. The illustration and arrangement of individual components may vary slightly between production versions.

Specifications

• Model: 62852
• Machine type: Duplex bench grinding machine
• Rated input power: 150 W
• Supply: 220–240 V, 50 Hz
• Grinding wheels: Two wheels, each approximately 125 × 15 mm
• Maximum motor speed: Approximately 2,950 rpm
• Protection rating: IP21
• Noise level: Approximately 76 dB(A)
• Machine dimensions: Approximately 260 × 170 × 220 mm
• Motor-shaft diameter: Approximately 12.7 mm
• Operating mode: Mains-powered electrical operation

Detailed Description

The machine drives two abrasive wheels from a common motor. The rotating wheel surfaces remove small amounts of material from a workpiece during controlled contact. This makes the grinder useful for removing burrs, restoring edges, and sharpening suitable steel tools.

The main components are the protective screens, abrasive wheel covers, workpiece supports, spark protection covers, mounting holes, on/off switch, and two abrasive wheels. The workpiece supports help hold material at a controlled position, while the spark protection covers help limit the spread of sparks and grinding particles.

For secure operation, place the grinder on a horizontal, level surface such as a sturdy workbench. The mounting holes can be used to fasten the machine to the bench and reduce movement during use.

Safety

Personal protection

• Read and understand the operating instructions before using the grinder.
• Only persons aged 16 or older may operate the machine, except younger trainees working under qualified supervision.
• Wear safety glasses or a face shield, hearing protection, suitable gloves, and respiratory protection where dust may be produced.
• Wear close-fitting clothing. Keep jewellery and loose garments away from the wheels, and tie back long hair.
• Keep hands away from rotating grinding wheels and never reach into the machine while it is operating.
• Use pliers or another suitable holder for small workpieces to keep fingers away from the abrasive surface.

Work area and electrical safety

• Keep the work area clean, dry, and well lit.
• Keep children and bystanders at least 5 m away while the machine is running.
• Do not use the grinder in explosive atmospheres or near flammable liquids, gases, or dust.
• Protect the machine from rain, moisture, and frost. This grinder is not intended for wet grinding.
• Use the machine only with a residual-current device rated for a maximum residual current of 30 mA.
• Connect the machine to a 230 V socket protected by a 16 A fuse.
• Inspect the plug, power cable, and extension cable before every use. Do not use damaged or entangled cables.
• Do not pull, lift, or carry the grinder by its power cable.
• Disconnect the plug before adjustment, maintenance, wheel replacement, clearing a jam, or storage.

Grinding-wheel precautions

• Check that the wheels, flanges, covers, guards, screws, and plugs are correctly fitted before switching on.
• Do not use worn, cracked, damaged, or deformed grinding wheels.
• Use wheels suitable for the material and compatible with the machine’s technical requirements.
• Never exceed the maximum speed marked on a grinding wheel.
• Allow a cold wheel to run without load for one minute before beginning work.
• Grind only with the face of the wheel, not with its side surfaces.
• Do not apply coolant directly to the wheel because it can weaken the wheel bond.
• Stop the machine immediately if a workpiece jams. Unplug the machine before removing the obstruction.
• Do not remove chips or splinters while the machine is running.
• Grinding produces heat. Allow the workpiece to cool before touching it.

Residual hazards

Even when the guards are correctly installed, sparks, dust, noise, and fragments from a damaged wheel or workpiece may still be produced. Maintain a safe stance, keep the protective equipment in place, and stop using the grinder if a guard or other safety component is damaged.

Setup and Operation

Initial setup

1. Place the grinder on a stable, level workbench.
2. Fasten it through the provided bench-mounting holes when practical, especially where vibration or movement could affect control.
3. Fit the workpiece supports and adjust them so the workpiece can be guided securely.
4. Install and adjust the spark protection covers. Keep the gap between each spark arrester and its wheel as small as possible, never exceeding 2 cm.
5. Check that all protective screens, wheel covers, fasteners, and electrical connections are secure.
6. Inspect both wheels for damage and confirm that each wheel is correctly mounted.

Grinding procedure

1. Clear the area of loose objects, combustible material, and unnecessary tools.
2. Put on the required protective equipment and stand in a balanced position.
3. Make sure the switch is in the off position before connecting the plug.
4. Start the machine and allow the wheels to run without load for one minute.
5. Place the workpiece on the appropriate support and bring it gradually into contact with the front face of the selected wheel.
6. Use light, controlled pressure. Move the workpiece as needed to distribute wear and prevent excessive heating.
7. Use a holder such as pliers for small pieces, and keep hands clear of the wheel.
8. Stop the machine when the task is complete and wait until both wheels have stopped before leaving the grinder.
9. Switch off and unplug the machine if it will be unattended.

Adjustments and wheel care

As a wheel wears, readjust the spark protection cover and workpiece support to preserve safe clearances and stable guidance. Keep the spark arrester no more than 2 cm from the wheel. If a wheel requires levelling, dress only its front face using an appropriate method and equipment.

If the motor overloads, it may switch off automatically. Allow the motor to cool before attempting to restart it. Repeated overloads indicate that the work pressure, wheel condition, or workpiece may need attention.

Changing a Grinding Wheel

1. Switch the machine off and disconnect it from the power supply.
2. Wait until both wheels have stopped completely.
3. Remove the relevant protective cover according to the machine’s assembly arrangement.
4. Prevent the shaft from turning and loosen the wheel retaining hardware.
5. Remove the old wheel and inspect the flanges and mounting surfaces.
6. Fit a compatible replacement wheel in the correct position.
7. Secure the retaining hardware without over-tightening it.
8. Reinstall all guards and protective covers before reconnecting the machine.
9. Run the replacement wheel without load for one minute and stop immediately if abnormal vibration, noise, or movement occurs.

Cleaning and Maintenance

Disconnect the plug before carrying out any maintenance or cleaning. Do not work on a machine that is connected to the power supply.

• Keep the machine and ventilation openings free from dust and grinding residue.
• Remove accumulated chips and dust regularly to reduce the risk of overheating and fire.
• Use a damp cloth for cleaning. Do not use water, solvents, flammable liquids, or toxic cleaning agents.
• Do not allow liquid to enter the motor, switch, or electrical components.
• Inspect moving parts, wheel covers, supports, spark arresters, cables, plugs, and fasteners regularly.
• Replace worn or damaged parts before operating the machine again.
• Use original accessories and replacement parts intended for the machine.
• Lubricate suitable moving parts periodically with environmentally friendly oil.
• Have repairs and extensive maintenance performed by qualified personnel.

Troubleshooting

The motor switches off during use

The motor may have activated its overload protection. Switch off the machine, disconnect it, and allow it to cool. Reduce grinding pressure and check that the wheel and ventilation openings are not obstructed before restarting.

The machine vibrates or makes unusual noise

Stop the grinder immediately and unplug it. Check the wheel for cracks, deformation, incorrect mounting, or excessive wear. Also inspect the flanges, covers, mounting fasteners, and bench attachment. Do not continue using the machine until the cause has been corrected.

The workpiece becomes excessively hot

Use lighter pressure and shorter contact periods. Move the workpiece across the wheel face instead of holding it in one spot, and allow it to cool between passes. Do not apply coolant directly to the grinding wheel.

Sparks are spreading too widely

Stop the machine and disconnect the power. Check the spark protection cover and adjust it so the distance from the wheel is as small as possible, without exceeding 2 cm. Remove accumulated dust and confirm that the guard is firmly secured.

The wheel does not run freely

Disconnect the machine before investigating. Check for a jammed workpiece, obstructed wheel cover, loose debris, or a damaged wheel. Never attempt to clear an obstruction while the wheel is rotating.

Disposal

The crossed-out wheeled-bin symbol means that the electrical machine must not be disposed of with ordinary household waste. Dispose of the grinder through an appropriate electrical and electronic equipment recycling collection system in accordance with local regulations. Correct recycling helps recover materials and reduces environmental and health risks associated with improper disposal.

Pros & Cons

• Pros: Two-wheel design supports separate grinding tasks; adjustable workpiece supports improve control; adjustable spark protection supports safer bench operation; compact format suits workshop use; bench mounting can reduce movement.
• Cons: The machine is intended for steel and steel alloys rather than wet grinding; users must manage sparks, dust, noise, heat, and wheel wear; regular guard and support adjustment is required as the wheels wear.