#Hole saw manual#

Listed above are dimensions of the knockout punch parts, and their Greenlee part numbers. Shown are dimensions of the knockout punch parts, and their Greenlee part numbers Piece of an old (Maybe 1960вЂ™s) Greenlee Hand Knockout Punch operating instructions. In addition the hole size of each knockout punch is provided. I do not know how useful they will be today for obtaining replacement parts for Greenlee knockout punches. The following two images depict the replacement part numbers for Greenlee hand knockout punches.

#Hole saw manual#

A section of an old operating manual for Greenlee hand knockout punches, instead of using electrical conduit hole sawsД¬LICK HERE to see Greenlee Knockout Punches on Amazon GREENLEE HAND KNOCKOUT PUNCH REPLACEMENT PART NUMBERS The paper is not in the best condition as I surmise that it is from the early 1960вЂ™s.Д«elow are the operating instructions for Greenlee electricians hand knockout punches. I scanned it and broke it up into sections for easier viewing. I found an old set of knockout punch instructions with a parts list among my fatherвЂ™s tools. Then use a hand knockout punch or a hydraulic knockout punch to make the desired size hole. You would drill a pilot hole sized for the draw stud of the punch using a step drill or a small hole saw. 4вЂі conduit knockout punch is 4.544вЂі or 115.4176mm.ДҐвЂі conduit, use a 5 1/2вЂі or 140mm hole saw.Д¦вЂі conduit, use a 6 5/8вЂі or 168mm hole saw.Д®lectrical Conduit Trade Size, Not the Actual DimensionsДЄs an alternative to hole saws, knockout punches can be used. 3 1/2вЂі conduit knockout punch is 4.044вЂі or 102.7mm.Д¤вЂі conduit, drill using a 4 1/2вЂі or 114mm hole saw. 3вЂі conduit knockout punch is 3.539вЂі or 89.9mm.ДЈ 1/2вЂі conduit, drill using a 4 1/8вЂі or 104mm hole saw.

2 1/2вЂі conduit knockout punch is 2.914вЂі or 74mm.ДЈвЂі conduit, drill using a 3 5/8вЂі or 92mm hole saw. 2вЂі conduit knockout punch is 2.416вЂі or 61.3664mm.Дў 1/2вЂі conduit, drill using a 3вЂі or 76mm hole saw. 1 1/2вЂі conduit knockout punch is 1.951вЂі or 49.6mm.ДўвЂі conduit, drill using a 2 1/2вЂі or 64mm hole saw. 1 1/4вЂі conduit knockout punch is 1.701вЂі or 43.2054mm.ДЎ 1/2вЂі conduit, drill using a 2вЂі or 51mm hole saw. 1вЂі conduit knockout punch is 1.362вЂі or 34.6mm.ДЎ 1/4вЂі conduit, drill using a 1 3/4вЂі or 44mm hole saw. 3/4вЂі conduit knockout punch is 1.115вЂі or 28.3mm.ДЎвЂі conduit, drill using a 1 3/8вЂі or 35mm hole saw. 1/2вЂі conduit knockout punch is 0.885вЂі or 22.5mm.ДЈ/4вЂі conduit, drill using a 1 1/8вЂі or 29mm hole saw. HOLE SAW SIZES AND KNOCKOUT PUNCH EQUIVALENTДЎ/2вЂі conduit, drill using a 7/8вЂі or 22mm hole saw. The others screw in to one of two standard size threads on hole saws with threads. The three arbors on the top left can only be used with a hole saw that has the rectangular round shape. Two types of hole saw arbors are depicted in the above photo and they are not interchangeable. Amazon sells cutting oil which is used for these purposes.ДЄt the bottom of this post is a list of old Greenlee hand knockout punch replacement part numbers that I scanned.Д¬LICK HERE to see ElectricianвЂ™s Hole Saw Kits on Amazon My two types of non-interchangeable electrical conduit hole saw arbors with standard pilot bits are used for different electrical conduit hole saw sizes

Although you can probably use most general purpose oil or motor oils for lubricating when drilling, there are oils made especially for drilling, tapping, and threading. Put something on the floor to protect it from oil leaks such as flattened boxes or an old piece of plywood. As the hole saw heats up from drilling, the oil will trickle down onto the metal being drilled. I read in a trade magazine of one electrician who puts an oil soaked cut-to-size piece of Felt inside of his hole saws whenever he drills into metal. When drilling into metal, it is a good idea to oil the hole saw a few times during the drilling process to prevent premature wearing of the hole saw teeth. Some angle drills have an accessory handle to gain extra leverage and control when drilling. I suggest wearing work gloves when using a right angle drill. The extra length of the right angle drill makes it easier to maintain control of the drill if the hole saw does get jammed. I usually use my 1/2вЂі Milwaukee Electric Right Angle Drill when using a larger hole saw as the torque is very good and the RPMвЂ™s are just right. Drilling at a slower speed will help the hole saw last longer, and there is less of a danger of the hole saw getting jammed and causing damage or injury.