Conduit Bender Guide - Conduit Bending Basics - 90° Stub-Up, Back to Back, Offset and 3 Point Saddle Bends

Sep 23, 2026

Conduit Bender Guide explains how to use Klein Tools conduit benders to produce durable, accurate bends for EMT and rigid conduits. It covers bender alignment symbols, identifying stub height and take-up, and matching the correct bender size to the conduit size. The guide outlines safe bending practices for both floor and air bending, spring-back considerations, and step-by-step instructions for making a 90° stub-up bend, plus guidance on marking, measuring, and common installation uses.

LanguageEnglish

CategoryHealthcare

FormatPDF

Pages12

Reading Time30 min

AccessFree to download

Conduit Bending Basics

Conduit Types and Bender Alignment Symbols

Klein Tools Series and Markings

Things to Remember While Bending

90° Stub-Up Bend

Bender Take-Up Table and Stub Height Calculations

Cutting and Measuring After Bending

Back to Back Bends

Conduit Bender Guide Conduit Bending Basics: The line of Klein Tools conduit benders have been designed for performance and durability exceeding the expectations of today’s professional. It is recommended to familiarize yourself with bending concepts, techniques and learn the bender’s functionality to provide you a positive experience while greatly improving the overall outcome of your project. Conduit come in two types, EMT and Rigid conduits and can be found in various sizes. Klein Tools provides conduit benders for EMT in ½”, ¾”, 1” and 1-¼” conduit and ½”, ¾”, and 1” Rigid conduit. To aid bending when performing a ground or air bend, the benders are marked with different alignment symbols to help the operator create the bends necessary to accomplish any project. The symbols found on the Klein Tools benders are the arrow, the teardrop, the star point and angle markings. These markings are found on various sides of the bender head. Star Point Klein Tools Ductile Iron Series: ½” EMT: \#56203 ¾” EMT: \#56204 1” EMT: \#56205 1-¼” EMT: \#56211 Klein Tools Aluminum Series: ½” EMT: \#56206 ¾” EMT: \#56207 Center of Bend Rim Notches Uses: Locates the center of a saddle bend. Uses: Back bends. Angle Marks Uses: Offset, saddle bendsand various installation situations Arrow Uses: Stub-up, Offset and outer marking of saddle bends. Stub Height Uses: Number to use for bender take-up. The 4 most common bends to know how to make are the 90° Stub-Up, Back to Back, Offset and the 3 Point Saddle bends. It is common to use a combination of the bender markings when making certain tube profiles. Knowing the proper technique and method of making the bends will allow you to accomplish most projects efficiently. Things to remember while bending: 1. A proper bend is made by rolling the conduit about the bender in the conduit’s cradle using all foot pressure. 2. Use the correct size bender for the conduit size being bent. 3. Some over bending may be required to allow for spring back of the conduit. The resting condition of the conduit is to be atthe final angle desired. 4. Measure and properly mark your conduit using the tables and information provided. 5. Floor bending: Make sure conduit is secure so it does not slide prior to bending. Apply ample foot pressure to the benders heel while minimizing the use of the handle as a lever but more of a guide. 6. Air Bending: Make sure handle’s hilt is secure on ground and is reinforced by your foot so it does not slide out. Make sure you are balanced and apply force close to the tool and your body controlling the tubing as you bend it around the bender’s cradle making sure the conduit does not slide in the bender head. 7. To prevent injury, always wear protective gear and do not over exert. 90° Stub-Up Bend: The stub bend is made by bending a piece of conduit into an L shape or 90° bend by placing the free end (short end) of the tube to a predetermined length as indicated in the diagram below. This is the most common bend and is a building block for other bends. Common uses for this bend are: Running conduit into electrical boxes, running conduit up or down walls, running conduit into walls through floors and ceilings and making inner and outer corner turns. | Bender Take Up Table | | | --- | --- | | 90° Stub-Up Bend | | | Conduit Size | Stub Height
Amount to subtract from Measurement | | ½” EMT | 5” | | ¾” EMT
and ½” Rigid | 6” | | 1” EMT
and ¾” Rigid | 8” | | 1-¼” EMT
and 1” Rigid | 11” | 1. Determine the overall free end height of the conduit you want after the bend. 2. From the overall free height, subtract the stub height listed in the Bender Take-Up Table for the conduit size you are bending. Klein Tools has provided the correct stub height on each bender head. 3. On the conduit, measure from the free end to be bent up the calculated number and mark the conduit. As an example, to bend 3/4” EMT conduit have a free end h

FAQs

What alignment symbols on Klein Tools benders help create correct bends?

The guide identifies arrow, teardrop, star point, and angle markings on different sides of the bender head to help the operator create required bends.

How do you calculate stub height for a 90° stub-up bend?

Determine the overall free end height you want after bending, subtract the stub height from the Bender Take-Up Table for the conduit size, then measure from the free end to mark the conduit.

What are the key safety and technique reminders while bending conduit?

Use the proper bender size for the conduit, apply full foot pressure in the cradle to form a proper bend, account for spring back so the conduit rests at the final desired angle, secure the conduit for floor bending, and wear protective gear while avoiding overexertion.

Sep 23, 2026

Uploaded by Taylor Morgan