| H·D·R® CONVEYOR PULLEYS |
|
Heavy Duty
Reinforced
The VAN GORP®
H·D·R® Rims of pulleys 14" in diameter and larger are formed
in custom-designed crowning rolls by a cold “forming” process that
increases the strength of the steel. They feature two-rim-half construction, an
exclusive, perfected technique that permits the use of internal discs in crown
and straight face pulleys...and thereby creates a stronger, more rounded
finished pulley product. |
End discs are
cut to micrometer calibration. Rims, discs and hubs are all steel and are fused
together by a deep penetrating, submerged arc welding process with back-up bars
used under the longitudinal rim welds. The result? A continuously welded drum
construction, with its built-in barrier against dirt, water and steam; less
maintenance; extended pulley service; and most important, a dramatic
reduction in radial deformation and longitudinal deflection in the
rim.
|
 |
Radial deformation is a
particularly serious problem when a pulley is used in a low arc of contact and
high tension application. The addition of internal discs, plus
heavier-than-standard construction, not only permits a VAN GORP®
H·D·R® |
| Pulley to work on any arc of contact, but also increases its moment
of inertia...giving it additional strength and rigidity while decreasing the
degree of longitudinal deflection. Pulleys 14" in diameter and larger, 26"-44"
wide have one internal disc; pulleys 46"-64" wide have two internal discs; and
pulleys 65" and wider have three or more internal discs. |
| *BACK TO PRODUCTS INDEX PAGE |
