Terex RT700 - Page 234

TABLE 8
SUGGESTED ALLOWABLE RADIAL BEARING PRESSURES OF ROPES
ON VARIOUS SHEAVE MATERIALS IN POUNDS PER SQUARE INCH
Regular Lay Rope, psi Lang Lay Rope, psi Flattened
Strand
Lang Lay
Material 6x7 6x 19
6x36 8x19
6x7
6x 19
6x36
psi Remarks
Cast Iron 300 480
585 680
350 550
660
800
Based on minimum
Brinell hardness of 125
Carbon Steel
550 900 1075 1260
600
1000
1180
1450 30-40 Carbon. Based
Casting
on minimum Brinell
hardness
of 160
Chilled Cast Iron 650 1100
1325 1550
715 1210 1450
1780
Not advised unless
surface is uniform
in hardness.
Manganese Steel, 1470 2400
3000 3500
1650 2750 3300 4000
Grooves must be
Induction Hardened,
ground and sheaves
or Flame Hardened
balanced for high-
speed service.
50· Wire Rope Technical Board - Wire Rope Users Manual, Fourth Edition