ABBP FVL142R-20MN  Heavy-duty circular load cell

ABBP FVL142R-20MN  Heavy-duty circular load cell

Circular load cells PFVL 141C

The circular load cells are machined

from a quadratic core. Shrunk-on stain

less steel rings protect the load cell

windings and underlying components.

There is a choice of core diameters

in multiples of 30 mm, giving 23 different

stand    ard    sizes    for    forces    between    1.6    to

60    MN.

Rectangular load cells PFVL 141V

The load cell can be adapted to the

required dimensions, and the length is

chosen as a multiple of 30 mm. For load

cells longer than 900 mm, the chosen

length    must    be    a    multiple    of    60    mm.

The width is chosen as a multiple of 30

mm. Stainless steel side-bars protect

the load cell windings and underlying

components.

This load cell type is available in

standard    sizes    from    0.63    to    56    MN.

Annular load cells PFVL 141R

The annular load cell consists of stain

less steel laminations wound on an

annular stainless steel core, after which

an outer stainless steel ring is shrunk on

to the load cell to protect the load cell

windings and underlying components.

Standard    sizes    of    annular    load    cells    are

available    from    2    to    28    MN.    Load    cells    with

other dimensions can be manufactured to

​order

Load    cells

Installation arrangements

ABB has many years of experience of install ing load cells in all

types of rolling mill.

To achieve the best possible measurement results, certain

basic rules must be observed during the installation of the

load cell:

•    The    entire    force    must    pass    through    the    load    cell.

•    The    force    must    be    measured    as    close    to    the    source    of    the    force

(the roll gap) as possible.

•    The    load    cells    must    be    protected    to    the    greatest    possible

extent from large bending, lateral and torsional forces.

1. Under the mill screw

For installation under the mill screw, the load cell can be

combined with thrust bearings and pressure plates into a

package attached to the mill screw. This arrangement results

in good force distribution, simple, inexpensive installation and

easy servicing. In addition, there is no need to machine any

surfaces on the roll stand. However, this arrangement does

take up space in the roll window.

2. Under the lower back-up roll bearing

There must be a sufficiently large flat surface on the lower

part of the roll stand to allow the installation of the load cell

under the lower back-up roll bearing. This arrangement has

the advantage that there is no need to pay particular attention

to the load cell during roll change.

See    also    our    offer    regarding    Load    Cell    Packages    on    the

next page.

Application hint

Load cells can be installed in several different ways, but the preferred

arrangement, from both the economical and technical points of view, is

usually to install the load cell under the mill screw.

There are currently three types of load cells in the product

range:

Load    cells    for    installation    under    the    mill    screw

2.    Load    cells    for    installation    under    the    lower    back-up    roll    bearing

3.    Load    cells    for    installation    between    the    mill    nut    and    the    mill

stand