Haglof Increment Borers

Haglof increment borers are high quality swiss steel tools that can give an arborist vital clues about the internal structure of a tree. Used for extracting core samples to determine the extent of decay in trees. The bits are Teflon coated for easier starting and have 3 treads. Handles are rubber coated to prevent rust. Borer shaft stores in handle when not in use. Replacement bits, extractors, and handles are available by calling customer service.

Air Spade

The Air Spade is used to excavate soil without damaging underground root systems or utilities. Faster and less damaging than a pick and shovel, the air spade uses compressed air to remove overlying soil with less effort and time. It uses a standard air compressor operating at 90 psi to generate wind speeds of 1200 mph.

Technology of Air-Vacuum Excavation Benefits:

• Using an advanced air-jet to dig rather than conventional tools or water offers a number of advantages in vacuum excavation including:
• Air digging tools generate less worker fatigue / injuries than a pick or shovel.
• In most soils, excavating with air is much faster than hand digging.
• A pick and shovel are not damage free tools; while air is non-damaging to all kinds of buried utilities.
• Air breaks soil into small pieces that are ideal for recompaction.
• Air excavated soil is more easily vacuumed at lower levels of suction.
• High pressure water jets are dangerous to operators since they can cut through clothes or work boots.
• A high pressure water jet can also cut a plastic gas line or harm pipe coatings.
• Soil excavated with water becomes mud that is considered contaminated and becomes a disposal problem costing time and money.
• Water can accidentally undermine adjacent areas to the excavation.
• Compressed air comes free from the atmosphere on the job site.
• Mud just dumped in an open area dries to a hardened spill and doesn't blend in.
• Water must be paid for and transported to digging locations requiring large tanks and bigger, heavier rigs.
• Muddy conditions can undermine footing around job site Splashing water is messy to contain and wet clothes are objectionable to workers.
• Air is non-conductive when working potentially around buried electric utilities.
• Air digging gets the particles of soil already airborne to be entrained more easily by the suction air stream.

Supersonic Air-jet: The Air-Spade patented supersonic nozzle turns compressed air into a high speed, laser-like jet moving at twice the speed of sound, Mach 2. All of the energy and momentum of this air moving at approximately 1200 mph is focused onto the soil dislodging it in a fraction of a second. Soil is an unconsolidated assemblage of solid particles that may or may not contain organic matter, the voids between the particles being occupied by air and/or water. The aggregate nature of soil aids the ability of the air to fracture it; while stronger materials and ones that are not porous like metal or plastic pipes or cables or even wooden tree roots are unaffected. Although exhaust nozzles for rocket engines have been designed and built for many years, supersonic air jet excavation nozzles are different. AIR-SPADE has carried out extensive research into the aerodynamic design of its earth excavation nozzles. Air-Spade has developed its own nozzle design, which is protected by U.S. patents. Unlike propulsion nozzles, the energy to accelerate the air comes primarily from the release of its compression rather than from the combustion of a fuel. Because of their small size, particular attention must be paid to the effect of the boundary layer on the nozzle profile. Special tooling and computer-aided- machining is used to manufacture the nozzles. AIR-SPADE continues to refine and improve its design through detailed mathematical modeling and laboratory experimentation.

Air Spade Standard Arbor Kit

The Air Spade is available by itself or in the Standard Arbor Kit.

The standard Arbor Kit Contains:

• One AIR-SPADE® with a 150 scfm / 90 psig nozzle, 4 foot barrel, and ergonomic handle
• 45 degree angled adapter
• 10 ft. comfort hose
• Storage case with lock