10 things you need to know before buying an ultrasonic cleaner

10 Things You Need to Know Before Purchasing an Ultrasonic Cleaner

12 Steps to Ensure You're Acquiring a Quality Machine

Having a detailed plan and a reliable checklist is essential when evaluating a secondhand piece of equipment. At Southern Fab, we conduct rigorous inspections on any machinery we acquire to reduce the chances of unexpected expenses. Below is the checklist we use internally for shears, now shared with our customers and partners.

We have dedicated countless hours over the years inspecting various makes, models, and styles of shears. Drawing from this extensive experience, we have crafted a comprehensive method and checklist we apply to every machine. While this checklist serves as a valuable guide for assessing operability on the equipment you're considering, it’s important to remember it shouldn’t replace the manufacturer's service records or local service group's input regarding the machine's history.

During the inspection, pay close attention to all moving components, control units, and hydraulic systems, as these areas are the most common sources of failures in machinery. As you go through this checklist, take photographs of each area you inspect, making note of anything concerning or areas that need extra scrutiny. Additionally, record a short video of the machine in operation (30 seconds max). Lastly, LISTEN; malfunctioning or worn machinery typically produces distinctive sounds indicating trouble (video these symptoms for follow-up evaluation).

1) Begin with an Interview!

Engage with the machine Operator or Maintenance Person. Having a candid discussion with them can unveil many hidden issues or confirm that the machine is in good working order. Since these individuals generally have no vested interest in selling the machine, you are likely to receive candid and honest feedback that will assist in your decision-making process. Consider asking:

• Do you have maintenance or repair logs available for review?
• What materials have been processed using this machine?
• Are there any recurring issues with the machine?
• Is there anything required to ensure this machine is 100% operational?

2) The Maintenance Logs

Proper maintenance is crucial for a machine's functionality and longevity. An efficiently maintained machine will typically have detailed logs indicating maintenance, calibration, and repairs conducted. The more comprehensive these records are, the better the machine is likely to be maintained. If available, review the machine's maintenance history for any recurring issues that might signal deeper problems.

3) Conduct a Visual Inspection

Performing a visual inspection allows you to grasp the overall condition within which the machine was operated and maintained. Look for clear signs of damage, rust, missing covers, or bare wiring. Evaluate the cleanliness of the environment—does it look well-maintained, or does it appear that the equipment is pushed to its limits?

4) Lubrication System

Lubrication is essential for the functionality of the machine tool. The metals involved slide, rotate, and move against each other, and lubrication is crucial in preventing wear. This step is often overlooked but is one of the most important during an inspection. Inspect the lubricant’s appearance and smell, ensuring all moving parts are adequately lubricated. Take your time—it's worth getting your hands dirty to understand the machine's lubrication state.

5) Control & Backgauge

The controls on machines differ significantly based on type and model. While some basic checks can be noted for later reference, they are vital in evaluating the machine's operability for the future. Activate all buttons and dials. Are they clearly marked? Is the display bright and readable? Inspect the foot pedal and associated cables, and check features like the powered blade gap (if present).

The backgauge on a shear is crucial for ensuring your sheared parts are cut to the correct length. Excessive wear or damage could compromise its accuracy, necessitating repairs or alternative testing to compensate for its movement. Heavier shears, particularly those rated for 3/8” and above, may be prone to more damage from lifting equipment. Check the backgauge’s operation for smooth functionality and positioning accuracy.

6) RAM (Upper Blade)

The ram of a shear supports the upper blade and should move smoothly, whether going straight up/down (guillotine style) or in a slight arc (swing beam style). Check the ram and upper blade closely for any signs of damage, ensuring smooth operation and consistent repeatability.

7) Bed (Lower Blade)

The bed supports the lower blade, squaring arm, and other accessories. Since it's the working surface, it's expected to show signs of wear. If the bed is adjustable (with screws for changing blade gap), it's critical to ensure it moves freely and hasn’t been locked into an improper position due to improper usage or damage. Assess both its condition and that of the lower blade.

8) Hydraulics

The hydraulic system is the lifeblood of a shear. It drives both the ram movement and the hold-down features that keep the material secure during shearing. It also offers overload protection via a blowout valve for excessive loads, preventing lock-up problems often encountered in mechanical shears. Inspect all hold-downs for their stopping power during operation.

9) Options & Accessories

Shears can be equipped with various options and accessories. Verify the condition and functionality of each item, such as:

• Squaring Arm
• Front Supports
• Front Gaging (Check for accuracy and smooth operation)
• Light Curtains
• Conveyors

10) Weights & Dimensions

Accurately measuring a system’s total weight and dimensions is critical. This information is essential not only for fitting the machinery in your workspace but also for logistics during transport. Always double-check the machine's measurements before proceeding.

11) Power/Air Requirements

A frequently overlooked step is recording the machine's voltage, amperage, and any necessary power supply lines required to ensure proper operation. Ensure that your shop can support the machine without needing a transformer. Verify all requirements of the equipment you are assessing and compare them with your available infrastructure.

12) Photos

Taking photos can be invaluable when anticipating the arrival of a machine. They can serve as reminders for power/air requirements and special installation considerations such as extended squaring arms, conveyors, or gauging. A good assortment of images can significantly help follow-up actions post-inspection.

If you require assistance or more information about shears, feel free to contact us at 813-444- or visit our website at www.southernfabsales.com.

If you seek further details, please visit Ultrasonic Shearing Machine (ko, pt, ja).