IDEAL Conduit Bending Guide Instructions
- September 9, 2024
- IDEAL
Table of Contents
Conduit Bending Guide
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Specifications:
- Conduit Size: EMT 1/2, 3/4, 1, 1-1/4
- Ductile Iron Bender: 74-001
- Aluminum Bender: 74-002
Product Information:
Your IDEAL Bender is engineered with features that lead to
perfectly predictable and repeatable bends. It is designed to help
you bend conduit with skill and professionalism, taking the
guesswork out of bending.
Usage Instructions:
How to Bend a Stub:
- Measure your job.
- Mark your conduit using the recommended tables.
- Use your bender’s engineered marks for bending.
How to Make Back-To-Back Bends:
-
Determine the point for the back of the second bend.
-
Measure and mark your conduit at the same distance as point
B. -
Align the mark on the conduit with the Star-Point on the bender
for accurate bends.
How to Make an Offset Bend:
-
Measure the distance to the obstruction.
-
Add the shrink amount from the table on page 5 for accurate
bending. -
Bend offsets in the air, keeping body pressure close to the
bender.
How to Make Saddle Bends:
-
Follow the same calculation for either set of angles.
-
Align the center mark with the reference point for accurate
bending. -
Ensure all bends are in the same plane.
Hickeys:
Hickeys require multiple movements per bend and can produce
bends with a tight radius.
FAQ:
Q: What are the different sizes available for EMT conduit
bending?
A: The EMT conduit bending sizes available are 1/2, 3/4, 1, and
1-1/4 inches.
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Bender Guide
Features
Your IDEAL Bender has engineered features which include: 1. Arrow
To be used with stub, offset and outer marks of saddle bends. 2. Rim Notch
Locates the center of a saddle bend. 3. Star-Point Indicates the back of a 90°
bend. 4. Degree Scale For offsets, saddles and those special situations. 5. A
Choice High strength ductile iron or light weight aluminum.
The above are features that lead to perfectly predictable and repeatable
bends.
Instructions
Bend conduit with skill and professionalism. Take the guesswork out of
bending. Steps to Remember Step 1. Measure your job. Step 2. Mark you conduit
using the recommended tables. Step 3. Use your bender’s engineered marks.
Note: Reference to the above Steps 1, 2, and 3 will be made throughout this
booklet.
1
Don’t Forget
· When bending on the floor, pin the conduit to the floor. Use heavy foot
pressure.
· When bending in the air, exert pressure as close to your body as possible.
· In case you overbend, use the back pusher or the expanded end of the bender
handle to straighten your conduit to fit the job.
How to Bend a Stub
The stub is the most common bend. Note that your bender is marked with the “take-up” of the arc of the bender shoe.
Example: Consider making a 14″ stub, using a 3/4″ EMT conduit.
Step 1.
Step 2. Step 3.
The IDEAL bender indicates stubs 6″ to . Simply subtract the take-up, or 6″, from the finished stub height. In this case 14″ minus 6″ = 8″. Mark the conduit 8″ from the end. Line up the Arrow on the bender with the mark on the conduit and bend to 90°.
Remember: Heavy Foot pressure is critical to keep the EMT in the bender groove and to prevent kinked conduit.
2
How to Make Back-To-Back Bends
A back-to-back bend produces a “U” shape in a single length of conduit. Use
the same technique for a conduit run across the floor or ceiling which turns
up or down a wall. Example: Step 1. After the first 90° bend has been made,
measure to
the point where the back of the second bend is to be, “B”. Step 2. Measure and
mark your conduit the same distance,
mark “B”. Step 3. Align the mark on the conduit with the Star-Point on
the bender and bend to 90°.
Star-Point on bender must be referenced for accurate bends.
3
How to make an Offset Bend
The offset bend is used when an obstruction requires a change in the conduit’s
plane. Before making an offset bend, you must choose the most appropriate
angles for the offset. Keep in mind that shallow bends make for easier wire
pulling, steeper bends conserve space.
You must also consider that the conduit shrinks due to the detour. Remember to
ignore the shrink when working away from the obstruction, but be sure to
consider it when working into it. Example: Step 1. Measure the distance from
the last coupling to the
obstruction. Step 2. Add the “shrink amount” from the table on page 5 to
the measured distance and make your first mark. Your second mark will be
placed at the “distance between bends.” (Refer to table on page 5.) Step 3.
Align the Arrow with the first mark and using the Degree Scale bend to the
chosen angle. Slide down the conduit and rotate conduit 180°, align the Arrow
and bend as illustrated.
Bend offsets in the air. Remember to keep your body pressure close to the
bender. First Bend
4
Offset Depth (Inches)
Second Bend
Example: 30° Bend with a 6″ Offset Depth
Distance Between Bends 12″ 1-1/2″ Shrink Amount
Reference Table for Offset Bends
Degree of Bend
22-1/2°
30°
45°
60°
2″
5-1/4″
3/8″
3″
7-3/4″
9/16″
6″
4″
10-1/2″
3/4″
8″
5″
13″
15/16″
10″
6″
15-1/2″ 1-1/8″
12″
7″
18-1/4″ 1-5/16″
14″
8″
20-3/4″ 1-1/2″
16″
9″
23-1/2″ 1-3/4″
18″
10″
26″
1-7/8″
20″
3/4″ 1″ 1-1/4″ 1-1/2″ 1-3/4″ 2″ 2-1/4″ 2-1/2″
7″ 8-1/2″ 9-3/4″ 11-1/4″ 12-1/2″
14″
1-7/8″ 2-1/4″ 2-5/8″
3″ 3-3/8″ 3-3/4″
7-1/4″ 8-3/8″ 9-5/8″ 10-7/8″
12″
3″ 3-1/2″
4″ 4-1/2″
5″
How to Make Saddle Bends
The saddle bend is similar to an offset bend, but in this case the same plane
is resumed. It is used most often when another pipe is encountered.
Most common is a 45° center bend and two 22-1/2° outer bends, but you can use
a 60° center bend and two 30° bends.
5
Important: Use the same calculation for either set of angles. Example: Step 1.
You encounter a 3″ O.D. pipe 4 feet from the last
coupling. The formula shown in the chart below indicates that for each inch of
outside diameter of the obstruction, you must move your center mark ahead
3/16″ per inch of obstruction height and make your outer marks 2-1/2″ per inch
of obstruction height from the center mark. Step 2. The following table gives
the actual mark spacings. In this example, the center mark is moved ahead
9/16″ to 48-9/16″. The outer marks are 7-1/2″ from the center mark, or
41-1/16″ and 56-1/16″. Mark you conduit at these points.
If Obstruction is 1″ 2″ 3″ 4″ 5″ 6″
Move Your Center Mark Ahead 3/16″ 3/8″ 9/16″ 3/4″ 15/16″ 1-1/8″
Make Outside Marks From Center Mark 2-1/2″ 5″ 7-1/2″ 10″ 12-1/2″ 15″
Step 3. (A) Align the center mark with the
Rim Notch and bend to 45°.
(B) Do not remove the conduit from the bender. Slide the bender down to the
next mark and line up with the Arrow. Bend to 22-1/2° as indicated.
(C) Remove and reverse the conduit and locate the other remaining mark at the
Arrow. Bend to 22-1/2° as indicated.
6
CAUTION
Be sure to line up all bends to be in the same plane.
Hickeys
Hickeys require a different approach to bending. It is not a fixed radious
device but rather one that requires several movements per bend. The hickey can
give you the advantage of producing bends with a very tight radius.
Order Information
Conduit Size
Ductile Iron Bender
Aluminum Bender
EMT 1/2″ 3/4″ 1″ 1-1/4″
74-001 74-002 74-003 74-006
74-031 74-032 74-033 74-036
Rigid/IMC 1/2″ 3/4″ 1″
74-002 74-003 74-006
74-032 74-033 74-036
Hickey
74-010 74-011 74-012 74-013
74-011 74-012 74-013
Handle
74-019 74-019 74-020 74-021
74-019 74-020 74-021
Handles
3/4″ IPS 38″ Long Expanded Extra High Strength Handle
1″ IPS 44″ Long Extra High Strength Handle
1-1/4″ IPS 54″ Long Extra High Strength Handle
74-019 74-020 74-021
The IDEAL bender line gives you the engineering design, indicator marks and durability to bend conduit with ease and confidence.
IDEAL INDUSTRIES, INC. Sycamore, IL 60178, U.S.A. 800-435-0705 Customer Assistance www.idealindustries.com ND 1534-4
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