Scheppach SM150LB Bench Grinder User Manual

1. Introduction

Thank you for choosing the Scheppach SM150LB Bench Grinder. This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your new tool. Please read this manual thoroughly before operating the machine and keep it for future reference.

The Scheppach SM150LB is a versatile combination grinder designed for various grinding, sharpening, and polishing tasks. It features a powerful 400W motor, a 150mm grinding wheel, and a 150mm wire brush, making it suitable for a wide range of workshop applications, from sharpening tools to cleaning parts and preparing surfaces for welding.

2. Safety Instructions

WARNING: Read all safety warnings, instructions, illustrations, and specifications provided with this power tool. Failure to follow all instructions listed below may result in electric shock, fire, and/or serious injury.

• Work Area Safety: Keep the work area clean and well-lit. Cluttered or dark areas invite accidents. Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust.
• Electrical Safety: Power tool plugs must match the outlet. Never modify the plug in any way. Do not abuse the cord. Never use the cord for carrying, pulling, or unplugging the power tool. Keep cord away from heat, oil, sharp edges, or moving parts.
• Personal Safety: Always wear eye protection (safety goggles or a face shield) and hearing protection. Use a dust mask if operations create dust. Wear appropriate work gloves. Do not wear loose clothing or jewelry. Keep hair and clothing away from moving parts.
• Tool Use and Care: Do not force the power tool. Use the correct power tool for your application. Disconnect the plug from the power source before making any adjustments, changing accessories, or storing power tools.
• Specific Grinder Safety: Ensure the workpiece is securely held. Never grind on the side of the grinding wheel unless it is specifically designed for that purpose. Maintain proper clearance between the tool rest and the grinding wheel (approximately 1.5mm or 1/16 inch).
• Eye Shields: Always ensure the adjustable eye shields are in place and properly positioned to protect against sparks and debris.

3. Product Overview

The Scheppach SM150LB Bench Grinder is equipped with a grinding wheel on one side and a wire brush on the other, along with protective features and integrated lighting.

Figure 3.1: Front view of the Scheppach SM150LB Bench Grinder, showing the grinding wheel on the left, wire brush on the right, protective eye shields, and the central motor housing with the Scheppach logo.

Key Components:

• Grinding Wheel: For sharpening and material removal.
• Wire Brush: For cleaning, deburring, and surface preparation.
• Adjustable Eye Shields: Transparent guards to protect the user from sparks and debris.
• Adjustable Tool Rests: Supports for holding workpieces against the wheels.
• Power Switch: On/Off control for the motor.
• Integrated LED Lights: Illuminates the work area above each wheel.
• Cast Iron Base: Provides stability and includes pre-drilled holes for workbench mounting.
• Rubber Feet: Further enhance stability and reduce vibration.

4. Setup

4.1 Unpacking and Inspection

Carefully remove the grinder from its packaging. Inspect the unit for any signs of damage that may have occurred during transit. Ensure all components listed in the packing list are present. If any parts are missing or damaged, contact your dealer immediately.

4.2 Workbench Mounting

For optimal stability and safety, it is recommended to securely mount the grinder to a sturdy workbench. The cast iron base features pre-drilled holes for this purpose.

1. Position the grinder on your workbench in a location that allows for ample working space and access to a power outlet.
2. Mark the positions of the mounting holes on the workbench.
3. Drill pilot holes into the workbench if necessary.
4. Secure the grinder using appropriate bolts, washers, and nuts (not included). Ensure the grinder is firmly attached and does not wobble.

If permanent mounting is not desired, the integrated rubber feet provide some stability, but caution should be exercised during operation to prevent movement.

4.3 Attaching Eye Shields and Tool Rests

The eye shields and tool rests are crucial for safe and effective operation. Attach them as follows:

1. Attach the tool rests to their respective mounting points near each wheel. Adjust their position so that the gap between the tool rest and the wheel surface is approximately 1.5mm (1/16 inch). This gap should be as small as possible without the tool rest touching the wheel.
2. Mount the transparent eye shields above each wheel. Adjust their angle to provide maximum protection while allowing a clear view of the workpiece.
3. Ensure all fasteners are tightened securely.

5. Operating Instructions

5.1 Before Starting

• Ensure the grinder is securely mounted and all guards are in place.
• Verify that the tool rests are adjusted correctly (1.5mm gap).
• Wear appropriate personal protective equipment (PPE), including safety glasses, hearing protection, and gloves.
• Connect the power cord to a suitable 230-240V power outlet.

5.2 General Operation

1. Turn on the grinder using the power switch. Allow the wheels to reach full operating speed before beginning work. The integrated LED lights will illuminate the work area.
2. Hold the workpiece firmly against the tool rest. Slowly and gently bring the workpiece into contact with the grinding wheel or wire brush.
3. Apply light, even pressure. Avoid excessive force, which can overheat the workpiece, damage the wheel, or cause kickback.
4. Move the workpiece across the face of the wheel to ensure even wear and to prevent grooving.
5. For sharpening, maintain a consistent angle. For cleaning with the wire brush, apply gentle pressure to remove rust, paint, or burrs.
6. Periodically check the workpiece for overheating. If it becomes too hot to touch, allow it to cool.
7. When finished, turn off the grinder and wait for the wheels to come to a complete stop before leaving the machine unattended or performing any adjustments.

5.3 Specific Applications

The SM150LB is equipped with a 36-grit grinding wheel for coarse grinding and sharpening, and a wire brush for cleaning and surface preparation.

• Sharpening Tools: Use the grinding wheel to sharpen chisels, drill bits, and other cutting tools. Always grind towards the cutting edge.
• Deburring: Remove sharp edges or burrs from metal workpieces using either the grinding wheel (for heavier burrs) or the wire brush (for lighter burrs).
• Cleaning: The wire brush is ideal for removing rust, paint, and corrosion from metal parts.
• Surface Preparation: Use the wire brush to prepare metal surfaces for welding, soldering, or painting by removing contaminants.

Figure 5.1: A user sharpening a metal tool on the grinding wheel, demonstrating proper technique with sparks flying safely away from the user.

Figure 5.2: Detailed view of grinding operation, highlighting the effectiveness of the eye shield in containing sparks.

Figure 5.3: An overhead perspective of the grinding process, showing the user's hand positioning and the direction of sparks.

Figure 5.4: A user sharpening a woodworking chisel, demonstrating the versatility of the grinder for various tools.

Figure 5.5: A close-up view illustrating the precise contact between the chisel and the grinding wheel during sharpening.

6. Maintenance

Regular maintenance ensures the longevity and safe operation of your Scheppach SM150LB Bench Grinder.

6.1 Cleaning

• Always disconnect the grinder from the power supply before cleaning.
• Use a brush or compressed air to remove dust and debris from the motor vents and around the wheels.
• Wipe down the exterior surfaces with a damp cloth. Do not use harsh chemicals or abrasive cleaners.
• Clean the eye shields regularly to maintain clear visibility.

6.2 Grinding Wheel and Wire Brush Care

• Dressing the Grinding Wheel: Over time, grinding wheels can become glazed or out of round. Use a wheel dresser to restore the wheel's cutting surface and shape.
• Replacing Wheels: When a grinding wheel or wire brush becomes excessively worn or damaged, it must be replaced. Refer to the specifications for correct wheel dimensions. Ensure replacement wheels are rated for the grinder's RPM.
• Inspection: Regularly inspect both wheels for cracks, chips, or excessive wear. Never operate the grinder with a damaged wheel.

6.3 General Inspection

• Check the power cord for any damage.
• Ensure all nuts, bolts, and screws are tight.
• Inspect the eye shields and tool rests for damage and proper adjustment.

7. Troubleshooting

This section addresses common issues you might encounter with your Scheppach SM150LB Bench Grinder.

If you encounter a problem not listed here or if the suggested solutions do not resolve the issue, please contact Scheppach customer support or an authorized service center.

8. Specifications

9. Warranty and Support

9.1 Warranty Information

Scheppach products are manufactured to high-quality standards. While specific warranty terms may vary by region and retailer, Scheppach typically offers a manufacturer's warranty against defects in materials and workmanship. Please retain your proof of purchase for warranty claims.

Spare parts for this model are generally available for a duration of 10 years in the EU, indicating long-term product support.

9.2 Customer Support

For technical assistance, spare parts, or warranty inquiries, please contact your local Scheppach dealer or visit the official Scheppach website for customer service contact information. When contacting support, please have your product model (SM150LB) and serial number (if applicable) ready.

Scheppach Official Website: www.scheppach.com