1. Introduction
This manual provides comprehensive instructions for the safe and efficient operation, maintenance, and troubleshooting of the Holzmann TBS2050E3 Electric Sheet Metal Shear. This robust 400V machine is designed for precise cutting of various sheet metals, offering reliability and performance for industrial applications. Please read this manual thoroughly before operating the machine to ensure safety and optimal performance.

Figure 1: Overview of the Holzmann TBS2050E3 Electric Sheet Metal Shear. This image shows the main unit with its red housing, control panel on the left, and the foot pedal connected by a cable.
2. Safety Instructions
Always prioritize safety when operating heavy machinery. Failure to follow these instructions may result in serious injury or damage to the equipment.
- Read the Manual: Ensure all operators have read and understood this entire manual before use.
- Personal Protective Equipment (PPE): Always wear appropriate PPE, including safety glasses, hearing protection, and sturdy work gloves. Avoid loose clothing or jewelry that could get caught in moving parts.
- Work Area: Keep the work area clean, well-lit, and free from obstructions. Ensure adequate space around the machine for safe operation and material handling.
- Electrical Safety: Ensure the machine is properly grounded and connected to a 400V power supply as specified. Do not operate with damaged cords or plugs. Disconnect power before performing any maintenance or adjustments.
- Machine Inspection: Before each use, inspect the machine for any damage, loose parts, or worn blades. Do not operate a damaged machine.
- Material Handling: Use proper lifting techniques and equipment for heavy sheet metal. Ensure material is securely positioned before cutting.
- Emergency Stop: Familiarize yourself with the location and operation of the emergency stop button.
- Unauthorized Use: Prevent unauthorized personnel from operating the machine.
- Moving Parts: Keep hands and body clear of the cutting blades and other moving parts during operation.
3. Setup and Installation
3.1 Unpacking
Carefully unpack the Holzmann TBS2050E3 shear from its packaging. Inspect all components for any signs of shipping damage. Report any damage immediately to the carrier and your supplier. Ensure all listed components are present.
3.2 Placement
Place the shear on a level, stable surface capable of supporting its weight (Net weight: 1550 kg). Ensure sufficient clearance around the machine for material handling and operator movement. The table height is approximately 830 mm.
3.3 Electrical Connection
Connect the machine to a dedicated 400V, 3-phase power supply. Ensure the electrical installation complies with local regulations and safety standards. The motor power is 4000 W.
3.4 Backgauge and Table Extension
Install the 600 mm table extension and the manual backgauge. The backgauge range is 0-600 mm and features a display for precise adjustments.
4. Operation
This section details the steps for operating the Holzmann TBS2050E3 Electric Sheet Metal Shear safely and effectively.
4.1 Pre-Operation Checks
- Verify all safety guards are in place and functioning correctly.
- Ensure the work area is clear of debris and personnel.
- Check the cutting blades for sharpness and damage.
- Confirm the power supply is connected and the emergency stop is disengaged.
4.2 Setting Up for Cutting
- Adjust Backgauge: Use the manual backgauge to set the desired cutting length. The display will show the current setting. The range is 0-600 mm.
- Position Material: Carefully place the sheet metal onto the table, ensuring it rests firmly against the backgauge and the front stops. The maximum material width is 2050 mm.
- Secure Material: The double eccentric driven rubber metal holder will automatically secure the material during the cutting process.
4.3 Performing a Cut
- Once the material is positioned and secured, step on the foot pedal to initiate the cutting cycle.
- The shear will perform one cutting stroke. The machine operates at 30 strokes per minute.
- Release the foot pedal after the cut is complete.
- Carefully remove the cut material and scrap.
The shear is designed to cut sheets up to 3 mm thick with a cutting angle of 2 degrees.
5. Maintenance
Regular maintenance is crucial for the longevity and safe operation of your Holzmann TBS2050E3 shear. Always disconnect the machine from the power supply before performing any maintenance.
- Daily: Clean the machine of metal chips and dust. Inspect blades for visible damage or dullness.
- Weekly: Check all fasteners for tightness. Lubricate moving parts according to the lubrication points indicated on the machine (refer to specific diagrams if available).
- Monthly: Inspect electrical cables and connections for wear or damage. Check the condition of the foot pedal.
- Blade Sharpening/Replacement: Dull or damaged blades can affect cutting quality and put strain on the machine. Sharpen or replace blades as needed. This should be performed by qualified personnel.
- Professional Inspection: It is recommended to have the machine inspected by a qualified technician annually.
6. Troubleshooting
This section provides solutions to common issues you might encounter. For problems not listed here, contact customer support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Machine does not start | No power supply; Emergency stop engaged; Faulty wiring. | Check power connection and circuit breaker; Disengage emergency stop; Inspect wiring (by qualified electrician). |
| Poor cutting quality (burrs, uneven cuts) | Dull or damaged blades; Incorrect blade gap; Material not properly secured. | Sharpen or replace blades; Adjust blade gap (refer to service manual); Ensure material is firmly against backgauge and holder. |
| Unusual noise during operation | Lack of lubrication; Loose components; Worn bearings. | Lubricate moving parts; Check and tighten all fasteners; Contact service technician for bearing inspection. |
| Backgauge display not working | Loose connection; Sensor issue. | Check connections; Contact service technician. |
7. Technical Specifications
| Model | Holzmann TBS2050E3 |
| Motor Voltage | 400 V |
| Motor Power S1 | 4000 W |
| Shaft Speed | 70 min-1 |
| Table Height | 830 mm |
| Max. Sheet Thickness | 3 mm |
| Max. Material Width | 2050 mm |
| Backgauge Range | 0 - 600 mm |
| Strokes Per Minute | 30 |
| Cutting Angle | 2 degrees |
| Net Weight | 1550 kg |
| Gross Weight | 1780 kg |
8. Warranty and Support
For warranty information, please refer to the documentation provided at the time of purchase or contact your authorized Holzmann dealer. Keep your proof of purchase for any warranty claims.
For technical support, spare parts, or service inquiries, please contact your local Holzmann service center or the retailer from whom you purchased the machine. Provide the model number (TBS2050E3) and serial number (if applicable) when contacting support.