1. Introduction
Thank you for purchasing the Saurium 48800 Bench Grinder. This manual provides important information for the safe operation, assembly, maintenance, and troubleshooting of your new tool. Please read this manual thoroughly before using the bench grinder and keep it for future reference. Proper use and care will ensure long-lasting performance and safety.
2. Safety Instructions
Always follow basic safety precautions to reduce the risk of fire, electric shock, and personal injury. Failure to follow these instructions may result in serious injury or damage to the tool.
- Wear Eye Protection: Always wear safety goggles or a face shield to protect against flying debris.
- Wear Hearing Protection: Use earplugs or earmuffs during operation.
- Secure Workpiece: Always use clamps or a vise to hold the workpiece firmly. Never hold it by hand.
- Maintain Work Area: Keep the work area clean, well-lit, and free of clutter.
- Avoid Loose Clothing: Do not wear loose clothing, gloves, ties, or jewelry that can get caught in moving parts.
- Disconnect Power: Always unplug the grinder before making adjustments, changing wheels, or performing maintenance.
- Use Correct Wheels: Only use grinding wheels rated for the grinder's maximum RPM and suitable for the material being ground.
- Inspect Wheels: Before each use, inspect grinding wheels for cracks, chips, or damage. Replace damaged wheels immediately.
- Adjust Tool Rests: Ensure tool rests are adjusted to within 1.5 mm (1/16 inch) of the grinding wheel.
- Do Not Overload: Do not force the tool. Allow the grinder to reach full speed before applying the workpiece.
- Grounding: Ensure the grinder is properly grounded.
- Keep Guards in Place: Never operate the grinder without all guards and eye shields properly installed.
3. Product Overview
The Saurium 48800 Bench Grinder is an electric tool designed for sharpening, grinding, and deburring various materials. It features two abrasive wheels for versatile applications.

Figure 1: The Saurium 48800 Bench Grinder shown in its product packaging. The image displays the green-colored grinder with two grinding wheels, safety guards, and an orange power switch, indicating its compact design and readiness for use.
Components:
- Grinding Wheels (2)
- Wheel Guards
- Eye Shields
- Tool Rests
- Power Switch (ON/OFF)
- Motor Housing
- Mounting Base
- Power Cord
4. Setup
Before operating the bench grinder, ensure it is properly assembled and securely mounted.
4.1 Unpacking and Inspection
- Carefully remove the grinder and all components from the packaging.
- Inspect the tool for any shipping damage. Do not operate if damaged.
- Verify all listed components are present.
4.2 Mounting the Grinder
For safe operation, the bench grinder must be securely bolted to a workbench or stand.
- Position the grinder on a sturdy, level surface.
- Mark the locations for the mounting bolts through the holes in the base.
- Drill appropriate holes in the workbench.
- Secure the grinder using bolts, washers, and nuts (not included). Ensure it is stable and does not wobble.
4.3 Installing Eye Shields and Tool Rests
Attach the eye shields and tool rests according to the diagrams in the separate assembly sheet (if provided). Ensure they are securely fastened and adjusted correctly.
- Adjust the tool rests so they are no more than 1.5 mm (1/16 inch) from the grinding wheel surface.
- Position the eye shields to provide maximum protection without obstructing your view of the workpiece.
5. Operating Instructions
Always ensure all safety precautions are followed before operating the grinder.
5.1 Before Starting
- Confirm the grinder is securely mounted.
- Check that wheel guards, eye shields, and tool rests are properly installed and adjusted.
- Inspect grinding wheels for damage.
- Ensure the power cord is in good condition and connected to a grounded outlet.
- Wear appropriate personal protective equipment (PPE): safety glasses, hearing protection, and suitable clothing.
5.2 Grinding Procedure
- Turn on the grinder using the power switch. Allow the wheels to reach full operating speed (2950 RPM) before beginning work.
- Hold the workpiece firmly against the tool rest.
- Gently bring the workpiece into contact with the grinding wheel. Apply light, even pressure.
- Move the workpiece slowly and consistently across the face of the wheel to ensure even wear and prevent grooving.
- Avoid applying excessive pressure, which can overheat the workpiece, damage the wheel, or stall the motor.
- For sharpening, maintain the correct angle against the wheel.
- After completing the task, turn off the grinder and wait for the wheels to come to a complete stop before leaving the machine.
6. Maintenance
Regular maintenance ensures the longevity and safe operation of your Saurium Bench Grinder. Always disconnect the power before performing any maintenance.
6.1 Cleaning
- After each use, clean dust and debris from the grinder using a brush or compressed air.
- Wipe down the exterior with a damp cloth. Do not use solvents.
- Keep ventilation openings clear of obstructions.
6.2 Grinding Wheel Replacement
Replace grinding wheels when they become worn, chipped, or cracked.
- Disconnect the grinder from the power supply.
- Remove the wheel guard and any retaining nuts or flanges.
- Carefully remove the old grinding wheel.
- Install the new wheel, ensuring it is correctly seated and the flanges are tightened securely but not excessively.
- Reattach the wheel guard and adjust the tool rest to the new wheel.
- Before use, perform a test run to ensure the wheel runs true and without excessive vibration.
6.3 Dressing Grinding Wheels
Over time, grinding wheels can become glazed or out of round. Use a wheel dresser to restore the wheel's cutting surface and shape.
- With the grinder running, gently apply the wheel dresser to the face of the grinding wheel.
- Move the dresser slowly and evenly across the wheel until the surface is clean and flat.
7. Troubleshooting
This section addresses common issues you might encounter with your bench grinder.
| Problem | Possible Cause | Solution |
|---|---|---|
| Grinder does not start | No power supply; Faulty power switch; Motor issue | Check power connection and outlet; Test power switch; Contact customer support |
| Excessive vibration | Loose mounting bolts; Unbalanced grinding wheel; Damaged wheel | Tighten mounting bolts; Dress or replace grinding wheel; Inspect for damage |
| Grinding wheel not cutting effectively | Glazed or clogged wheel; Incorrect wheel type for material | Dress the grinding wheel; Ensure correct wheel is used |
| Motor overheats | Overloading the motor; Blocked ventilation | Reduce pressure on workpiece; Clear ventilation openings |
8. Specifications
Technical data for the Saurium 48800 Bench Grinder:
- Model: 48800
- Power: 150W
- Voltage: 230V / 50Hz
- No-load Speed: 2950 RPM
- Grinding Wheel Dimensions: 125 x 16 x 12.7 mm (Diameter x Thickness x Bore)
- Power Source: Electric Cord
- Weight: Approximately 4 kg
- Manufacturer: Madeira & Madeira, SA
9. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the warranty card included with your product or contact your retailer. Keep your purchase receipt as proof of purchase.
For further assistance, please visit the official Saurium website or contact their customer service department.