wolfcraft 3034000
wolfcraft EHZ PRO One-Hand Clamp 100/915 mm Instruction Manual
Model: 3034000
1. Introduction
The wolfcraft EHZ PRO One-Hand Clamp 100/915 mm is designed for efficient clamping and spreading of workpieces with a single hand. This professional tool features a hardened steel rail for durable clamping pressure up to 120 kg. Its large, non-slip clamping areas protect delicate surfaces and ensure even pressure distribution. The clamp can be easily converted into a spreader, making it a versatile addition to any workshop.
2. Safety Instructions
Always follow basic safety precautions when using hand tools to reduce the risk of personal injury. Read and understand all instructions before operation.
- Wear appropriate personal protective equipment, such as safety glasses, to protect against flying debris.
- Ensure the workpiece is stable and securely positioned before applying clamping force.
- Do not exceed the maximum clamping pressure of 120 kg (264.55 lbs).
- Keep hands and fingers clear of moving parts during operation.
- Inspect the clamp for any damage or wear before each use. Do not use a damaged clamp.
- Store the clamp in a dry, secure place out of reach of children.
3. Product Components
The wolfcraft EHZ PRO One-Hand Clamp consists of the following main parts:
- Fixed Jaw: The stationary end of the clamp.
- Movable Jaw: The adjustable end that applies pressure.
- Steel Rail: The main bar along which the movable jaw slides.
- Ergonomic Handle: For comfortable grip and operation.
- Trigger/Pump Lever: Used to apply clamping pressure.
- Release Lever (Yellow Button): Used to release pressure and adjust the movable jaw position.
- Spreading Button (Yellow Button): Used to convert the clamp into a spreader.
- Clamping Pads: Non-slip pads on the jaws to protect workpieces.
- Adjustable Spacing Guides: Small yellow guides for precise placement and as rests.

Image: Front view of the wolfcraft EHZ PRO One-Hand Clamp, showing its main components.
4. Setup
Before using the clamp, ensure it is clean and free from debris. The steel rail may have a protective coating; wipe it clean if necessary.
4.1 Adjusting the Movable Jaw
- Press and hold the yellow release lever on the movable jaw.
- Slide the movable jaw along the steel rail to roughly match the size of your workpiece.
- Release the yellow lever to lock the jaw in place.

Image: Illustration demonstrating the adjustment of the movable jaw by pressing the yellow release lever and sliding it along the rail.
5. Operating Instructions
5.1 Clamping Function
- Position the clamp around the workpiece, ensuring the clamping pads are in full contact with the surfaces.
- Squeeze the trigger/pump lever repeatedly until the desired clamping pressure is achieved. The clamp can apply up to 120 kg of force.
- To release the clamping pressure, press the yellow release lever.

Image: A hand demonstrating the operation of the one-hand clamp to secure a wooden workpiece.

Image: Graphic illustrating the maximum clamping force of 120 kg provided by the tool.
5.2 Spreading Function
The EHZ PRO clamp can be converted into a spreader for pushing workpieces apart.
- Press the yellow spreading button on the movable jaw.
- Remove the movable jaw from the steel rail.
- Re-attach the movable jaw to the opposite end of the steel rail, ensuring it clicks securely into place.
- Position the converted spreader between the workpieces you wish to spread.
- Squeeze the trigger/pump lever to apply spreading force.

Image: Step-by-step visual guide on how to convert the one-hand clamp into a spreading tool.

Image: The wolfcraft EHZ PRO clamp configured as a spreader, used to hold apart two door frames.
5.3 Special Features
- Cross Groove: The clamping jaws feature a practical cross groove for securely holding round or tubular workpieces.
- Adjustable Spacing Guides: These guides assist in precise placement, especially when gluing furniture, and can also serve as rests for workpieces.

Image: Close-up view highlighting the cross groove for round materials and the adjustable spacing guides on the clamp jaws.
6. Maintenance
Regular maintenance ensures the longevity and optimal performance of your wolfcraft EHZ PRO One-Hand Clamp.
- Cleaning: After each use, wipe down the steel rail and jaws with a clean, dry cloth to remove dust, sawdust, and other debris. If necessary, use a mild cleaner.
- Lubrication: Periodically apply a small amount of silicone spray or light machine oil to the steel rail and the internal mechanism of the movable jaw to ensure smooth operation. Wipe off any excess lubricant. Avoid lubricating the clamping pads to maintain their grip.
- Storage: Store the clamp in a dry environment to prevent rust and corrosion.
7. Troubleshooting
If you encounter issues with your clamp, refer to the following common solutions:
- Insufficient Clamping Force: Ensure the movable jaw is properly engaged on the rail. Check for any obstructions between the clamping pads and the workpiece.
- Movable Jaw Sticks/Does Not Slide Smoothly: Clean the steel rail thoroughly and apply a light lubricant as described in the Maintenance section. Ensure the yellow release lever is fully depressed when attempting to slide the jaw.
- Clamp Does Not Convert to Spreader: Ensure the yellow spreading button is fully pressed and the movable jaw is correctly aligned for removal and re-attachment to the opposite end of the rail.
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | 3034000 |
| Material | Alloy Steel |
| Item Dimensions (L x W x H) | 1.81 x 10.12 x 45.08 inches |
| Color | Yellow |
| Style / Size | 100/915mm |
| Item Weight | 1.57 Kilograms |
| Tensile Strength (Clamping Force) | 120 kg (264.55 Pounds) |
| Included Components | One-Hand Clamp PRO 100–915 mm |
8.1 Available Sizes (EHZ PRO Series)
The EHZ PRO series is available in various sizes, each with specific clamping and spreading ranges:

Image: A table detailing the Art.No., clamping width (A), spreading range (B), and throat depth (C) for various wolfcraft EHZ PRO one-hand clamp models.
9. Warranty
wolfcraft provides a 10-year guarantee on the EHZ PRO One-Hand Clamp, reflecting its commitment to quality and durability. Please retain your proof of purchase for warranty claims. For specific terms and conditions, refer to the official wolfcraft warranty policy.
10. Support
For further assistance, technical support, or to inquire about spare parts, please visit the official wolfcraft website or contact their customer service department. Contact information can typically be found on the product packaging or the official brand website.
Brand: wolfcraft
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