How to Choose the Correct Borescope Diameter and Why Its Cost Differ?

A borescope is an optical instrument professional use for inspection in areas inaccessible through other means. Borescopes are available in different length and diameter. The choice of diameter and length will depend on the application, its access point, and internal passageway intricacies. The access point will decide the necessary diameter, while the probe has to be long enough to reach a specific inspection point.

Consider what is the minimum diameter and length needed in your profession. For example, in aircraft for PT-6 engine inspection, a 3.9mm articulating video borescope is perfect. For larger turbines like the JT-8 engine there a little big insertion area and space within internal cavities, so a 6.0 mm borescope is recommended.

The USA Borescope Company supplies push or sewer cameras. These are suitable for visual inspection of underground pipes, sewer lines, and conduit. The diameter of a typical sewer camera ranges from 6mm to 3” and its length ranges from 100 feet to 400 feet. It is a valuable tool and expensive, so make sure you buy from reliable suppliers like the USA Borescope. Customer satisfaction is a top priority at USA Borescopes.

Common characteristics to decide a suitable borescope model

  • Articulation
  • Portability
  • Power source needs
  • Video or image capture capabilities
  • Visual display clarity
  • Illumination
  • Insertion tube length

All these aspects will also determine the borescope price. Different industry’s need for a borescope differs. The local mechanics need borescope for inspection of cars and trucks engine parts. Tube manufacturers use it to identify internal defects in piping applications. Eyes cannot get a view inside a pipe with a small diameter, so borescope inspection is helpful.

Why borescope price differs widely?

Borescope price ranges from $100 to $60,000. Many tools fall under the ‘Borescope’ category. It ranges from rigid to semi-rigid to advanced articulating video borescope. The rigid scopes don’t bend and are available in the smallest diameter. Its image quality is better than its flexible counterparts. These are durable and designed to be used in specific tasks like inspecting hydraulic manifold bodies, fuel injectors, and automotive cylinders.

Articulating borescopes can access cavities around the bend like a combustion chamber. It gives a live image of turbine blades, compressed air inlets, and seals without any need to disassemble the engine. They are expensive and more fragile. However, its resolution is inherently low due to fiber optics.

Semi-rigid means a blend of rigid and flexible. Usually, they are tiniest – less than 1 mm in diameter. Small diameter scope cannot use traditional lens optics, so are housed in stainless steel tubes. Due to its tiniest diameter, the borescope is a little flexible and can bend up to 20 degrees.

Invest in a borescope that suits your specific inspection needs. The price must not be your first priority, but the diameter and length have to be your major concern. Another feature to consider is battery lifespan. Many technicians operate with articulating borescope in an awkward position, so they can look for lightweight models suitable for lengthy inspections.

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