Mittler Bros Machine & Tool 2500 - Manual (Page 6)

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3. Place the tubing (which has already been marked with the bend start points) into the
Bender Shoe with the first bend start mark aligned with the START arrow on the
Bender Shoe. Slip the U Saddle over the tubing and the Bender Shoe. Align the holes
up and install the Pin. See diagram at top of Page 8 for details.
CAUTION: THE PIN MUST BE COMPLETELY THROUGH BOTH SIDES OF THE U
SADDLE! FAILURE TO HAVE PIN COMPLETELY INSTALLED MAY RESULT IN
EQUIPMENT DAMAGE AND / OR PERSONEL INJURY!
4. Align the front edge of the Follow Bar with the START arrow on the Bender Shoe. Be
sure the start mark on the tubing is still lined up with the START arrow as well. Run the
Pressure Roller Adjusting Shaft up to the Follow Bar.
5. PRESSURE ROLLER ADJUSTMENT: Turn hand wheel to move pressure roller into
light contact with follow bar.
NOTE: If tubing and follow bar begin to rotate toward the shoe, stop and move pressure
roller back from follow bar. Align tubing and follow bar and again move pressure roller
toward shoe until follow bar is making light contact on the tubing at the “start” point.
NOTE: Follow Bar should be 90-degrees to base plate with tubing nested in cut-out of
follow bar.
DIGITAL READOUT OPERATION
1. Turn “
ON ” the Digital Readout Assembly.
2. Press the ”in/mm” button so that the “mm” scale is
readable. NOTE: Using the “mm” scale will provide
a one degree of bend readout for each “mm” of
indicator travel, for example, a 45mm reading is
equivalent to 45° of bend.
3. Press the “zero” button when you set your Pressure
Roller and are ready to start bending.
TUBING SPRING BACK
The tubing material, wall thickness and amount of bend angle will all influence the amount
of spring-back that must be allowed for.
It is best to test a sample piece of tubing to determine the “spring-back’ before making
your first bend with the type tubing material, wall thickness, and bend angle. Example:
Make a 90-degree bend (digital readout reading 90-degrees) and remove from the shoe.
Position the bent tube on the flat table top of bender with bent angle pointing up and
measure the angle of the bend. If the bend is 87-degrees, then 3-degrees of spring-back
needs to be included, thus bending to 93-degrees will produce a 90-degree finished bend.
PLEASE CONTACT US IF YOU NEED FURTHER ASSISTANCE.
ON / Zero
Button
Inch / MM
Button