RPE General Machine Company
In addition to manufacturing bag filling machines and equipment, RPE General Machine Company manufactures a line of expansion joint slitters / slitting machines, blades, and parts.
Expansion Joint Slitting Machines
EJS-100 and EJS 114 Expansion Joint Slitting Machines
RPE General Machine Co. offer two different models for our expansion joint slitting machines.
Our standard model, EJS-100 comes with 6 cuts (12 blades and hubs, 6 Top Shaft, 6 Bottom Shaft) and allows the customer to set the spacing of the cuts, more cuts can be ordered upon request.
The other model we offer, EJS-114 is the Extended Model which is a wider machine to allow additional blades to be "parked" off to the side out of the cutting area. This, for example, allows you to set the machine for 11 cuts for one size material and then park 5 cuts off to the side to cut a different material with 6 cuts without having to remove the shafts to then remove the hubs and blades.
Construction
The machine is entirely fabricated from channel and angle iron, securely welded together. All Bearings are shielded, pre-lubricated, and should require minimum amount of service. Machine features a Feed Table with guide and end roller to assist the operator with handling the material.
Shafts, Knives and Hubs
Our Shafts are made from TG&P carbon steel. They are precision machined on the ends to a tolerance of not more than .005" shaft runout.
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Our Knives are made from Spring Steel, they are heat treated after machining too. After heat treating they are precision ground, clamped between hubs that are the same diameter as on your machine.
We offer two styles of Knives/Blades, Single or Double Bevel. Single Bevel Blades are designed to be run with overlap of the top and bottom blades, whereas Double Bevel Blades are designed to be run without overlapping, essentially point to point.
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Our Hubs are precision machines so the bore and the face that the blades are mounted to are true with each other. The inside of our hubs have all machine marks remove to give as much contact as possible. These 6" Hub flanges give excellent stability to the blades.
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CAUTION! USE ONLY BRASS TIPPED SET SCREWS IN THE HUBS!
Drive Mechanism
The drive chain between the top and bottom shafts can be simply adjusted by loosening a set screw holding the idler and moving the adjusting handle in the desired direction, then re-tightening the set screw. A major adjustment requires taking out or adding chain links.
Electrical
Standard motor is 5 H.P. 240-480 V - Three Phase 1800 RPM. This gives a cutting speed of approximately 50 feet per minute. Special motors are available. Controls consist of Main Power, Start, and Jog Reverse. Multiple safety shut-off switches are located on the machine's guards and covers to stop the machine and prevent injury while in operation.
Cutting
A 48" x 48" table is furnished with your machine. There is a guide and and end roller to facilitate feeding. All moving parts are guarded and have proper caution labels on them.
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The machine uses "fingers" which straddle both top and bottom knives to prevent wrap around.
Repairs and Servicing
Our customers commonly send in their worn/used blades for re-sharpening. In most cases you can have your blades sharpened many times as long as they are not severely "chipped".
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We also offer rebuilds of your expansion joint slitter, replacing all worn or used components and updating any controls or guards that are required.
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Finally, we can supply you with parts for your RPE General Machine Co or Charley Machine Co slitters as well as parts for other obsolete or competitors models.
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Contact us for all of your service needs!
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RPE General Machine Co.
Ph: 312-754-5614 or 708-758-8250