CommScope Trunk & Distribution Cable - Manual (Page 44)

Bending Radii
Cables are often routed around corners during cable placement and pulling tension
must be increased to apply adequate force to the cable to bend the cable around
the corner. Tension is directly related to the flexibility of cable - and flexibility is QR’s
greatest strength.
CommScope’s specified minimum bending radius is the static (unloaded) bending
radius of the cable. This is the minimum radius to which the cable can be bent
without electrically or mechanically degrading the performance of the cable. Bending
the cable in this manner is usually only done during splicing or final forming. This is
also the radius allowed for storage.
Always review the specifications for the appropriate
bend radii. If you do not exceed the minimum bend
radius nor exceed the maximum pulling tension, you
should have a successful installation.
The bending radii of cables
during the construction process
are controlled by the radii of the
bends in duct or conduit as well
as construction techniques and
equipment.
QR’s shield
construction
permits the
tightest bend
radius in the
industry
Minimum
Cable Bending Radii
in/cm
QR 320 3 (7.6)
QR 540 4 (10.2)
QR 540 armored 6.5 (16.5)
QR 715 5 (12.7)
QR 715 armored 7.5 (19.1)
QR 860 7 (17.8)
QR 860 armored 9.5 (24.1)
P3 500 standard (jacketed) 6.0 (15.2)
P3 500 bonded (jacketed) 3.5 (8.9)
P3 625 standard (jacketed) 7.0 (17.8)
P3 625 bonded (jacketed) 4.5 (11.4)
P3 750 standard (jacketed) 8.0 (20.3)
P3 750 bonded (jacketed) 6.0 (15.2)
P3 875 standard (jacketed) 9.0 (22.9)
P3 875 bonded (jacketed) 7.0 (17.8)
MO500 6.0 (15.2)
MO650 7.0 (17.8)
MO750 8.0 (20.3)
5.3 Underground Installation
Bending Radii