For cranes, Slings, Shovels, Hoists & general Engineering Purposes
(6x37) 8 to 56 mm
With Fibre Core (FC)		 (6x37) 8 to 56 mm
With Fibre Core (FC)		 (6x37) 8 to 26 mm
with Steel Core (IWRC)
For Mooring , Heavy derrick, Hoist Ropes, Towing, Oil, well, Drilling & General Engineering Purposes
6x26 (10/5 & 5/5/1)
(FC) or (IWRC)
9 to 40 mm		 6x36 (14/7 & 7/7/1)
(FC) or (IWRC)
13 to 56 mm		 6x41 (16/8 & 8/8/1)
(FC) or (IWRC)
16 to 60 mm		 6x49 (16/8 & 8/8/1)
(FC) or (IWRC)
48 to 92 mm
How groove depth effects the diameter of wire ropes ?

The depth of groove should be selected so that the rope does not rub against the flange of the sheave or each other while entering running or leaving the groove. Angle of circular arc of the bottom of groove should not be less than 120 degrees.

The grooves on the drum should be pitched so that there is clearance between neighbouring turns of rope on that drum. The recommended clearances are 1.5 mm up to rope diameter of 12 mm, 2.5 mm up to rope diameter of 28 mm and 3mm for rope diameter above 28 mm.

The groove diameter of the pulley or sheave should always be larger than the actual diameter of the rope. But if the groove diameter is too large the rope will tend to flatten and if it is too small pinching of rope will take place.The correct positioning is explained along with tolerance and clearances on pully or sheave groove diameters  
Checks List before taking ropes into use :
# Blocks and sheaves : Please ensure that all the grooves of the sheaves are in proper alignment and shape to avoid damage of the ropes.
# Bushings and bearings to be checked periodically to avoid any ply in the normal working of wire ropes.
# Check the ship rollers and guides to avoid damage to the outer strands of the rop.
# Do not jerk load the rope while lowering the crane blocks
# Dragging of material should be avoided as it may cause damage to the internal core of the ropes
# You can increase yhe life of the ropes by proper lubrication and careful handling.