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Pressductor Radial load cells

Pressductor Radial load cells
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Web tension systems Pressductor Radial load cells

Measurement made easy Web tension systems Quality tension measurement for quality tension control • Accurate • Rugged • Rel

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— Pressductor Radial load cells Introduction ABB’s Pressductor® Radial load cells (PRT load cells) are sensitive and accurate yet rugged, reliable and compact. They can withstand high overloads and vibrations, and operate over a wide range of tensions: ideal for any web converting application such as coating, laminating, printing, slitting, winding/unwinding and many others. With Pressductor Radial load cells the risk of web breaks can be reduced to a minimum, thus leaving as much time as possible for real production. The well-proven Pressductor load cells combined with the tension...

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— Pressductor Radial load cells 50 years of experience — 01 Pressductor technology – mechanical force alters magnetic field. — 02, 03, 04 Typical PRT load cell installations. Minimize maintenance Share the experience, of virtually maintenance-free load cells, with thousands of other Pressductor load cell users. A robust load cell design with no fragile or ageing components makes this possible. Thanks to its robust and compact design, the PRT load cells work consistently for many years without any need for maintenance. And in the textiles industries, machinery applications include nonwovens...

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6 WEB TENSION SYSTEMS PRESSDUCTOR RADIAL LOAD CELLS — Designers appreciate: directions. • Remarkably high spring constant • Very narrow profile • High reliability Operators value a load cell with: • No drift • No need for recalibration • No failures • High reliability Selecting and sizing load cells Calculating the forces exerted on load cells in a specific application allows you to determine the ideal load cell size specification. Force calculations and load cell sizing are typically conducted in collaboration with ABB; this page provides an overview of the considerations that play a...

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When horizontal, the measurement force (FRtot) is a function of just the tension in the web (T) and the deflection angles (α and β). Since the weight of the roll and bearings (Tare) is not sensed, the load cells can be sized to measure low tension levels even on a comparatively heavy roll. However, the perpendicular force (F Vtot) – which does include Tare – should not exceed the overload rating. Application hint Two 10 % application guidelines are useful in selecting load cell sizes: When the measurement force (FRtot) is vertical, it includes the weight of the roll and bearings (Tare), and...

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— Pressductor Radial load cells Designed to measure web tension Four standard sizes measure web tension from 0.1 to 100 kN. With its extended-capacity feature, the PRT load cell is capable of measuring tension reliably over a 30:1 range. Superior overload characteristics in all force directions (up to 500 %) eliminate overload failures for all practical purposes. PFRL 101A PFRL 101B PFRL 101C PFRL 101D PFRL 101A PFRL 101B PFRL 101C PFRL 101D PFRL 101A PFRL 101B PFRL 101C PFRL 101D PFRL 101A PFRL 101B PFRL 101C PFRL 101D Exceptionally high spring constant virtually eliminates load cell...

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WEB TENSION SYSTEMS PRESSDUCTOR RADIAL LOAD CELLS Technical data Nominal load (rated capacity) Overload capacity 2 Measurement direction Transverse to measurement direction Axial Spring constant All load cells Operating principle Accuracy class 4 Repeatability error Operating range Stainless steel Working temperature range Zero point drift 6 Extended-Range Operation Beyond their nominal capacity, PRT load cells have an extended range of measurement - so they can be sized for normal, as opposed to maximum, tension levels. As a result, they can process a wider variety of materials. 1 Values...

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— Pressductor Radial load cells Shaft sizes and bearing recommendations — 01 The bearing is press fit to the roll shaft, and the assembly is slip fit to the load cell and secured with snap rings. — 02 Integration of load cell and shaft. PRT load cells work well with both rotating (live) and non-rotating (dead) shafts. For live shaft applications, many different bearing types and sizes can be used. The load cell and the shaft can be integrated by first press-fitting the selected bearing onto the shaft and then sliding the assembly into the center hole of the PRT load cell. Or, alternatively,...

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WEB TENSION SYSTEMS PRESSDUCTOR RADIAL LOAD CELLS Load cell PRFL 101A Self-alinged ball bearing SKF# 2201E 1202E 2202E 2203E Spherical roller bearig SKF# Shaft diameter mm Note: Bearing specifications in table are samples. PRT load cells can accommodate bearings for many other shaft diameters besides those shown. 1 Please specify required snap ring distance when ordering. A = Shaft diameter B = Load cell hole diameter C = Distance between snap rings

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— Pressductor Radial load cells Mounting options — 01 Three ways to mount. — 02 Easy wall mounting. — 03 For dead shaft rolls ABB provides a dead shaft kit with an adapter that clamps onto the non-rotating roll shaft. — 04 Grease nipple. Three ways to mount PRT load cells mount with equal ease on the inner and outer side of machine walls. In locations where pedestal mounting is required, a specially designed angle bracket extends the usefulness of the radial load cell. Easy wall mounting Aligning load cells on opposing machine walls is made easy by fitting the shallow surface protrusion on...

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Dead shaft adapter kit For applications with non-rotating shaft ends ABB provides an optional dead shaft adapter kit for PFRL 101A and PFRL 101B. The kit consists of a self-aligning bearing to manage misalignments, adapter for different shaft diameters and an anti-rotation pin. Grease nipple ABB recommends to use sealed bearings that will meet most demands in web handling machinery without the need for regular greasing operations. However, if greasable bearings must be used, ABB offers, as an option, grease nipples. This option is available for PFRL 101B, PFRL 101C and PFRL 101D. Dead shaft...

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