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®
HEAVY DUTY
REINFORCED
The VAN GORP® H•D•R® Rims of pulleys 14" in diam-
eter and larger are formed in custom-designed crown-
ing rolls by a cold “forming” process that increases the
strength of the steel.They feature two-rim-half construc-
tion, 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 microme-
ter 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 pul-
ley service; and most important, a dramatic reduc-
tion in radial deformation and longitudinal deflec-
tion 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 con-
tact, but also increases its moment of inertia...giving it
additional strength and rigidity while decreasing the
degree of longitudinal deflection. Pulleys 14" in diam-
eter and larger, 26"-44" wide have one internal disc;
pulleys 46"-64" wide have two internal discs; and pul-
leys 65" and wider have three or more internal discs.
H•D•R® Conveyor Pulleys
HDR Drum
Pulley Diameter
(Crown) or S (Straight Face)
Face Width
Hub Type and Size
D 24 C 38 XT25
Part Number Example