Tube Rolling Motors
ET850 Series
Torque Controlled Pneumatic Rolling Motor
Elliott's ET850 Motor is the next evolution of push-pull motors. Offering the same USA quality and performance you're used to, with additional features to improve the operator's experience.
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Tube Size: 0.750” to 1.250” (19.1 – 31.8mm) OD
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Type: Rolling Motor
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Power: Pneumatic
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Torque: Torque Controlled
ET720 Series
Torque Controlled Pneumatic Rolling Motor
The ET Motors are ideal for rolling small tubes commonly found in oil coolers and other small heat exchangers. These motors have undergone extensive testing, proving long tool life and quality.
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Tube Size: 0.250” to 0.500” (6.35 – 12.7mm) OD
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Torque Range: 2 to 75 in lbs (0.23 - 8.5 Nm)
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Type: Rolling Motor
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Power: Pneumatic
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Torque: Torque Controlled
Elliott’s Stall Torque Pneumatic Rolling Motors are the most powerful motors available for rolling tubes in extreme applications. The motors are recommended for use in heavy wall, thick drum applications in watertube boilers.
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Tube Size: 0.750” to 6.000” (19.1 – 152.4mm) OD
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Type: Rolling Motor
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Power: Pneumatic
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Torque: Stall Torque
99 Series
Electric Rolling Motors
Elliott’s 99 Series electric rolling motors offer better consistency, faster RPMs, and comparable torque to that of pneumatic offerings.
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Tube Size: 0.250” to 3.000” (6.4 – 76.2mm) OD
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Type: Rolling Motor
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Power: Electric 110V or 220V
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Torque: Torque Controlled with ELC
445 Series
Right Angle Pneumatic Rolling Motors
The powerful 445 Series Motors are ideal for tough boiler tube applications. The right angle heads are suitable for rolling tubes in hard to reach, tight areas. Now available in torque controlled & stall type motors.
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Tube Size: 1.500” to 4.000” (38.1 – 101.6mm) OD
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Type: Right Angle Pneumatic Rolling Motor
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Style: Torque Controlled or Stall Type
Midi/Maxi Series
Torque Controlled Pneumatic Rolling Motor
The Midi/Maxi Series Pneumatic Rolling Motors are manufactured with quality materials to provide motor robustness and durability for years to come.
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Tube Size: 0.750” to 2.000” (19.1 – 50.8mm) OD
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Type: Rolling Motor
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Power: Pneumatic
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Torque: Torque Controlled
Suggested Articles
The Critical Role of Torque in Tube Expansion: Why the Right Motor Matters
For years, tube expansion relied heavily on the subjectivity of "rolling to size or feel". The issue is that what one operator "sees, hears, or feels" could drastically differ from another, leading to variability and a high potential for error. The advent of torque control revolutionized this process, significantly reducing operator error and ensuring consistent, repeatable results across the board. While torque control is essential for consistency, the success often hinges on one critical factor: selecting the right motor for the job. Understanding why torque matters and the potential pitfalls of choosing the wrong motor is crucial for achieving reliable and lasting tube to tube sheet joints.
Why Won’t This Tube Expand
When expanding heat exchanger tubes, achieving the proper wall reduction is crucial for a secure and leak-free seal. Sometimes, however, tubes fail to expand sufficiently, hindering the integrity of the vessel. This article outlines common causes and troubleshooting steps for incomplete tube expansion.
Anatomy of A Tube Expander
Tube expanding is a technique used to create a secure connection between a tube and tube sheet, by compressing the outer diameter against a fixed surface. This process ensures a leak-proof joint that is crucial for the proper functioning of heat exchangers and other pressure vessels.
Expanding X-ID® Boiler Tubes
In order to increase efficiency and lower operating costs, many boiler makers are switching to X-ID® enhanced tubing. While X-ID® tubes are beneficial for the end user, they can be challenging to install.
Increase Tool Life On Tough Materials
As end users strive for increased heat transfer efficiency, customers are often tasked with building vessels that will withstand heavy use and the test of time. This often results in the use of more wear resistant tube sheet and tube materials, such as Inconel, Hastelloy, and Duplex Stainless Steel. While exotic materials often mean longer tube life, they can take a big toll on expander tool life.
Tube Sheet Grooves and How They Impact Expansion
Grooved tube sheets are the standard in most shell and tube heat exchanger applications. Providing both leak protection and improving the tube-to-tube sheet joints, grooves play an important role in prolonging the life of a tube and the efficiency of a vessel. However, in few applications where grooves are not required, there can be challenges during the tube expansion process.