Figure 5-20.Hydraulic sweep bender with hand pump.
manufacturers tables and charts are not available, the
conduit stub length must be equal to or greater than the
minimum shown in table 5-3.
When bending conduit up to 90 degrees with a
bender that has a ram travel scale, you should make
your bend according to the ram travel scale reading.
An offset bend requires two bends of the same
degree. To determine the distance between the two
bends, you must first decide on the distance in inches
of the offset and the degree of bend your conduit
Table 5-3.Conduit Size/Deductions/Mininum
routing requires. Remember that the maximum
conduit size and offset in inches may restrict your
bend. Mark and bend your conduit according to the
benders manufacturers instructions, tables, and charts.
If you have access to a conduit pipe holder
(normally for 1 1/4-inch to 4-inch conduit), it will
simplify your work by keeping the pipe in perfect
alignment at all times, achieving an outstanding bend.
When offset bends are being made, the pipe holder
permits making the first bend and then reversing the
pipe end and making the second bend. The second bend
will then be 180 degrees opposite the first bend.
Before using any pipe bender, make sure
the quick-lock pins are through the holes in the
bottom frame and the eccentric pin is turned
clockwise past the ball lock. Also, make sure
the correct sides of the pipe support pins are in
the proper holes. Failure to ensure correct pin
placement could result in damage to the
conduit and/or the bender.
Occasionally conduit will require more bending.
In this case, place the conduit in the bender and
continue bending to the desired degree. This step is not
necessary when using the Bending Degree Indicator
(used for exact bends and reduces the necessity to
correct bending caused by springback) or when using
the Bending Degree Protractor because the bend will
When you are bending long lengths of conduit,
conduit pipe holders are very useful. Check the
manufacturers instruction guide for tables and charts
that give vital information about conduit bending kit
When you have to make a large sweep 90-degree
radius bend, you will need to get the operating manual
of the bender you are using and follow the suggested
procedures for marking the bend spacing and finding
the necessary center location.
One of the benders that you may use in the field is
the GreenleeTM 880 M2 Lightweight Hydraulic
Bender. This bender is designed to make bends up to 90
degrees on rigid conduit from 1/2 inch to 2 inches
inclusive. The 15-ton ram, the bending shoes, and the
frame unit allow a complete 90-degree bend to be made
with one piston stroke. The units of the bender can be
rapidly and easily assembled for operation without any
tools. By using the bending instructions and the piston