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New Products

(Magazine)

November 29, 2005, ... wide-footprint lugs. Can provide high-torque pressure without damaging the inside of the core or core ends, company says. Said to reduce workplace injuries with easy unloading and to reduce operating costs ...

The Case for Automatic Splicing

(Magazine)

September 29, 2005, ... is justified only after someone is hurt but not before. Manual at-speed transfer should be allowed only when the applied torque is so low that an operator can stall the winder spindle with one hand. Don’t ...

The Converting Relay Race: Part II

(Magazine)

August 30, 2005, ... torque is needed? How should I create torque? Where should I apply torque? How should I compensate for the changing roll diameter? Should I close the tension loop? If I close the loop, what feedback system ...

The Converting Relay Race: Part 1

(Magazine)

July 30, 2005, ... depends on your core and torque transmission needs. Bigger rolls need more support. The more support provided by your core (such as a large metal drum or thick-walled paper core), the less support is needed ...

New Products

(Magazine)

July 30, 2005, ...  SKF Motion Technologies, Bethlehem, PA; 800/541-3642; linearmotion.skf.com The Speedi-Roll linear guidance system offers high load-carrying capacity, rigidity, and torque resistance. Suited for applications ...

New Products

(Magazine)

June 29, 2005, ... core shaft support and torque transmission for processing a variety of rolled material on converting equipment. Features include heavy-duty construction, chrome-plated locking ring, ball bearings to support ...

PRINT & CONVERTER 05 New Product Digest

(Magazine)

June 29, 2005, ...  Componex, Edgerton, WI; 608/884-2201; componex.net The WINertia TQ is described as a breakthrough in live shaft technology. The idler is designed with a new torque coupling said to make the live shaft ...

Concave Rollers Pros & Cons

(Magazine)

June 29, 2005, ... have increased strain and tension. The laterally different tensions induce a moment (or torque) on the web. The moment creates a slight inward bend in the web. The web’s bent shape conflicts with the parallel ...

New Products, Part 2

(Magazine)

May 30, 2005, ...  Straight (SA) and Tapered-Bore (TA) tension brakes are designed to provide superior thermal dissipation, consistent torque ratings, and proper tension control for unwind brake applications. Finned rotor ...

Drawing Conclusions: Part II

(Magazine)

May 30, 2005, ... the biggest negative of draw zones. Where closed loop tension control and open loop torque control will get to their steady state quickly, draw zones take time. This is like waiting for the hot water to ...

Drawing Conclusions: Part 1

(Magazine)

April 29, 2005, In planning the tension control for any web line, there are only three options: tension control, torque control, and draw control. Between any two rollers or rolls controlled by a motor, brake, or clutch, ...

New Products

(Magazine)

April 29, 2005, ... maximize torque. Reportedly, motor runs smoothly at very low speeds, and high torque capability allows the elimination of gearboxes and removes the risk of lubricant leaks. Tension Transducers ...

New Products

(Magazine)

February 27, 2005, ... foot-mount styles, core shaft support and torque transmission system can be operated with an air gun or fully automated by adding simple valving. Baler Very Versatile American Baler, Bellevue, OH; ...

Why Tension?

(Magazine)

January 30, 2005, ... excessively. Too much tension and the core or roll’s inner layers are crushed. Too much torque applied to the center of the roll, and the whole thing may begin to shift tangentially like a giant clock ...

Web Tension 101

(Magazine)

November 29, 2004, ... zone, then decrease to 1.5 PLI in the rewind zone. Torque required to provide a certain level of tension to a web is total tension measured across the web times roll radius. This means the torque driving ...

The Harms of Harmony

(Magazine)

November 29, 2004, ... motors. Change from a chain or timing belt to a flat belt. Eliminate your gearbox by changing to an AC motor that can create full torque at low speed. Reducing tension variations is a little trickier. ...

Mechanics of Tension Control, Part II

(Archive)

November 29, 2004, ... refer to the term "drive." This term is being used as a purely generic term to describe a mechanical device that delivers torque to a roll of material or driven roll(s) in a converting machine. This device ...

Magpowr Streamlines Clutch and Brake Ordering via Online Offering

(Archive)

June 14, 2004, Magpowr says customers now can order it Perma-Tork permanent magnet clutches and brakes as well as its Sofstep magnetic particle clutches and brakes online. PRESS RELEASE FENTON, MO, USA—According to ...

Tracking Wrinkles: Part II

(Magazine)

May 31, 2004, ... and strain. Multiply the strain change by the material's elastic modulus to get the induced tensile stress change. Roller-induced tension variations exert a torque on the web span. A torque is a force ...

New Products, Part 1

(Magazine)

May 30, 2004, ... maximize copper content. This is said to provide the greatest power output in the shortest possible motor design. Available in a wide range of frame sizes and lengths to achieve torque ratings from 0.1–240 ...