Specialised Welding Products Ltd

AIR TOOL CONSUMPTION GUIDEWhen assessing the size of a compressor to operate air tools and equipment please use the air compressor FAD (free air delivered)- this is the correct volume you need to know in order to ensure that a compressor wilf operate your equipment efficently.

Column 1 is manufacturers stated tool consumption under continuous use in CFM.

Column 2 is average time of use in seconds.

Column 3 gives CFM required to operate tool under normal conditions of use.

DESCRIPTION 1 2 3 DESCRIPTION 1 2 31/4" Drill 15 30 7.53/8" Drill H.D. 22 15 5.53/8" Drill 18 15 4.51/2" Drill H.D. 27 15 6.753/8"'Slimline'Drill 17 15 4.253/8" Angle Head Drill 12 15 3.01/2" Drill 18 15 4.53/8" Drive Impact Wrench 11 10 1.81/2" Drive Impact Wrench .21 _ 10 - 3.53/4" Drive Impact Wrench 38 6 3.81" Dr ive Impact Wrench 70 6 7.01" Drive Hi-Torque Impact Wrench 92 6 9.21/2" 2 Way Drive Wrench 27 6 2.73/8" Dri. Ratchet Nut Runner 22.5 6 2.251/2" Dri. Hi-Torque Impact Wrench - 31 - 6 - 3.13/4" Drive Impact Wrench 45 6 4.51" Impact Wrench 92 6 9.23/8" Sq Dr Impact Wrench Angled 22.5 6 2.25

Shear (to 14 SWG) 18 30 9.0Air Vacuum Cleaner 15 15 3.754" Right Angle Grinder 23 14 5.37Orbital Sander 23.5 30 11.755" or 6" Random Orbital Sander 13 20 5.997" Vertical Sander 27 15 6.75Heavy Duty Air Hammer 18 13 4.5Power Hack Saw and File 14 15 3.57" Vertical Disc Grinder 80 , 15 20.0Light Weight Grinder 18 15 4.5Random Orbital Sander with Vac Alt 18 20 12.0Orbital Sander 22 30 11.0Random Orbital Sander 6" 22 30 11.0Hi-Speed Sander 25 ,10 ULong Bed Orbital Sander 22 20 7 JAir Hammer 25 15 6.254" Grinder 1400 rpm 12.5 20 4.17Fibre Glass Saw 17.5 10 2.9

Terms: There ore o number o( terms used in thecompressed oir industry, below are o few of the most usedand o brief explanation of what they mean.

Displacement (Volume)This term is used to decide the theoretical volume of acompressor, ie the swept volume of o cylinder multiplied bythe number of compressions in a minute and expressed incubic feet per minute (CFM). This figure should not be usedin calculating the size of compressor required, os it bears norelationship to the free air figure (hot you may require.

Free Air deliveredThis measurement is the volume of air taken in to acompressor and therefore describes more accurately thevolume of air available for use. Expressed as CFM/FADat a given pressure.

Remember: Displacement is the theory and CFM/FADis the actual volume available.

PressureThis is the way force, ie power, in the compressed air systemis expressed and is measured in either pounds per squareinch (psi) or bar.Pressure is important because lo have loo low a pressurewould cause the equipment not to work correctly, too high apressure would at best rapidly wear out the equipment, atworst it could make the equipment lethal.

See the enclosed technical information chart for the correctpressure for individual piece of equipment

Single Stage CompressorsOne or more cylinders producingthe final pressure in onecompression. Normal maximumpressure 150 psi. g.

Two Stage CompressorsFirst stage, air is compressed toapproximately 30 psi. g, cooled then compressed to finalpressure in the second stage. Normal maximum pressure200 psi. g.Note: Two stage provides more air for less energy.

Power SupplySingle Phase.Standard supply for domestic and light industry 220/240 volts.

• 5 Amp light circuit113 Amp ring main

• 45 Amp cooker/shower

Not suitable for equipmentMax 2.5 hp std compressorMax 3.0 hp for 1C compressorsMax 35 hp compressor

Three PhaseMain electrical supply to industry.• 380/440 Volts Any size of compressor

Main Benefits of Three Phase• Approx 2/3 cost saving over single phase• Stable supply• Longer motor life

Main Benefit of Single Phase• Excellent «ond-hand resale value

N ote: The figures in fne Air EquipmentConsumption Table are only a guide, for additionalinformation please p/ione oar help desfc,

Choosing the Right CompressorThree-phase compressors ore more efficient producers ofcompressed air than single-phase equivalent units, sowhere a three-phase supply is available the best option i;the three-phase compressor.Single-phase compressors up to 2.5 hp can operate from240V13 Amp power supply, with the exception of the ne1

3 hp Low Current models. 3.0 hp and above must operatifrom a 240V 30 Amp supply. Wherever possible choose alarger compressor than you require at present to allow toexpansion. Compressors with cast iron cylinders runningslow, offer a much extended service life.

1) Bodyshop - using the air equipment consumptionguide, add all the equipment consumptions togetherand divide by two, the resulting figure is the minimumfree air you require.

2) Workshop - using the air equipment consumptionguide, add all the equipment consumptions togetherand divide by three, the resulting figure is the minimumfree oir you require.

Note: For calculation purposes always use free oirlures.

A) Ask Questions1 What is the air to be used for?1 What is the maximum pressure required?

(see consumption guide)3 What electricity supply is available?

(single/three phase)4 What size compressor is currently in use?

(see quick calculation guide below)

Specialised Welding Products Ltd

5 How well does existing compressor cope?6 What are the future plans for additional

staff and equipment?

B) Complete Following List

1 Number of tools and type

2 Number of users

3 Air consumption of largest tool/equipment using air

C) Complete Survey Form

D) Select Compressor from Catalogue(use only free oir figures)

Note: Quick guide to CFM/FAD output (approx)of existing compressorMultiply motor hp by 3,3 = output in CFM / FADMultiply motor kW by 4,5 - output in CFM / FADMultiply motor kW by 2,1 = output in L/sec / FAD

Cost of Air LeaksHissing Sid is at work in most companies you visit.Hissing Sid is a length of air hose which has become thefamily 'air' loom, it must.be, because this hose is costing itsowner a small fortune and yet to suggest replacement wouldbe a cardinal sin. So what does Hissing Sid cost to run???

Air leak site0.75mm dia.1.5mm dia.

cm lost1.66.5

Energy300W1100W

Air Equipment Consumption GuideTools FAD/CFM Pressure PS1.G3/8' impact Wrench 2-3 70-901/2* impact Wrench3/4* Impact Wrench1* Impart Wrench3/8" Ratchet Wrench1/2* Ratchet Wrench3/8' Drill1/2* DrillDA Sander (fop quality)DA Sander (econ. model)7" Sander/PolisherZip/Impact CutterCutlers Shears4" Anajejjrinder7" Angle GrinderTyre InflatorTyre Changer [manual)Tyre Changer (auto)Sand Blast CabinetSand Blast Hand GunSpray Guns:

airbrushminiaturelow pressure

• standardHVLPHA/GEO/9000 series LVLP

Air Fed MaskOil Pump^Grease PumpAir Water WashCar WashBlow Gun (safety nozzle)Spark Plug CleanerUnderseal GunRivet Gun2 Ton Air/Hydraulic LiftBrake TesterPlasma Cutter

449142-52-55121020254-54-818-2525-352-44610-508-12

0.254.71.5-47.1414-207-955-61.54.5101.5-53341.5-35-83-76-8

70-9070-9070-9070-9070-9070-9070-9070-9070-9070-9070-9070-9070-9070-90150-23015015050-100100

3020-5020-4050-6070-9028-3620-40100-150100-15015070-10010010010070-90130-15075-10060-100