FOR SALE VICE FOR MACHINE TOOLS BRAND ALLEN MODEL MU / 90.

Technical Data Sheet Used Vice Brand Allen, Model MU/90

1. General Description

The Allen vice model MU/90 is a precision piece of equipment designed to ensure safe and stable fixing of pieces during machining operations on machine tools. It is mainly used in mechanical workshops and precision laboratories. Being a used model, it is important to evaluate its condition and understand its technical specifications.

2. Main Components

• Vise Body: Made of cast iron or high-strength steel, the body provides a sturdy base for clamping. Cast iron is often used for its vibration absorbing properties and stability.

• Chuck: The mobile part that moves along the body of the vice and allows opening and closing. It is operated via a crank or screw mechanism.

• Clamping Jaws: Interchangeable surfaces on which the pieces are clamped. They can be fixed or mobile and are designed to adapt to pieces of different shapes and sizes.

• Clamping Screws: Used to adjust the distance of the jaws and keep the piece in position. They can be trapezoidal screw or rack type.

• Crank or Operating Lever: Allows you to apply adjustable clamping force to the piece. The crank is often equipped with a speed reduction mechanism for fine adjustment.

3. Dimensions and Technical Specifications

• Vice Length: Typically between 200 and 400 mm. The MU/90 model could specifically be around 250mm.

• Maximum Opening: Opening capacity varies between 100 and 250 mm. For the MU/90 model, it is usually around 125 mm.

• Vice height: Generally between 100 and 200 mm.

• Weight: The weight can vary between 20 and 60 kg depending on the size and robustness. The MU/90 is around 30-40 kg.

• Clamping Accuracy: Clamping precision is typically ±0.01 mm, ensuring a high degree of precision in the machining of parts.

4. Mechanical Characteristics

• Clamping System: Uses a trapezoidal screw or rack mechanism to ensure uniform clamping force. The crank can be equipped with a transmission system to facilitate movement.

• Adjustability: The jaws can be adjusted to accommodate workpieces of different shapes and sizes. Some models have the ability to tilt the jaws for angular clamping.

• Durability and Stability: The cast iron or steel body ensures long life and good stability during operation.

5. Optimal Use Parameters

For optimal use of the Allen MU/90 vice, consider the following formulas and parameters:

• Clamping Force: The clamping force FF $F$ can be calculated as:

  $$F$$

  where TT $T$ is the applied torque and dd $d$ is the diameter of the tightening screw.

• Clamping Pressure: The pressure applied on the PP $P$ is:

  $$P$$

  where FF $F$ is the clamping force and AA $A$ is the contact area between the jaws and the workpiece.

• Clamping Uniformity: Check that the pressure is evenly distributed to avoid deformation of the piece. Use a caliper to measure alignment and force distribution.

6. Workable Materials

The Allen MU/90 vise is suitable for a variety of materials, including:

• Ferrous Metals: Steel, cast iron.
• Non-Ferrous Metals: Aluminium, copper, bronze.
• Composite Materials: Hard plastic, synthetic materials.

7. Maintenance

• Cleaning: Keep the vise clean of chips and debris to prevent wear. Use a brush to remove residue and a protective oil to prevent rust.

• Lubrication: Lubricates screws and moving parts to maintain smooth operation. Use specific oils or greases for precision equipment.

• Precision Check: Regularly check the precision of the tightening. Make sure the jaws are not worn and that the clamping mechanism works smoothly.

• Parts Inspection: Check for cracks, wear or damage to the clamping jaws and screws. Replace worn or damaged parts.

8. How to Evaluate a Good Used Car

• General Condition: Check the vise body for visible damage, such as cracks or warping.

• Functionality: Test the clamping mechanism to ensure it works smoothly and without backlash.

• Wear of Parts: Check the jaws and screws for wear and signs of damage. Make sure all moving parts are in good condition.

• Stability and Accuracy: Check that the vice maintains precision and that there are no unexpected movements during tightening.

9. Sectors of Use

The Allen MU/90 vise is used in:

• Mechanical Workshops: For precise clamping of pieces during processes such as milling and turning.
• Precision Laboratories: For the processing and assembly of delicate components.
• Manufacturing Industries: To ensure precision in the production of parts and components.

10. Why it is better to buy it used

• Lower Cost: Purchasing a used vise significantly reduces costs compared to purchasing a new model.

• Reliability: If well maintained, a used vise from a renowned brand such as Allen can offer excellent performance and long life.

• Ability for Repairs and Upgrades: Buying used saves on upfront costs, leaving room for any necessary repairs or upgrades.

Conclusion

Purchasing a used Allen MU/90 vise can be an excellent choice if you are looking for a robust and precise tool at a more affordable price. Be sure to perform a thorough assessment of the vise's condition and follow regular maintenance practices to ensure long-lasting, reliable use.