Type 4R has 2 vertical & 2 horizontal rollers with one rope-passing opening. The nominal sizes, of universal fairleads are denoted by reference to the outside diameter of the main roller in millimeter, in terms of the nearest number drawn from a basic series of preferred number. For the universal fairleads having the same roller diameter, the alphabetical character is followed by nominal size for the different SWL The nominal sizes are: 140, 160, 180, 200, 250, 300A, 300B, 400A, 400B and 400C.
Main Technical Specification:
Model Type: 4R, 4 rollers;
Function: Mooring and towing;
Nominal Size:140, 160, 180, 200, 250, 300A, 300B, 400A, 400B and 400C.
Safe Working Load (SWL):14~140MT
Load Direction: Horizontal Load and Vertical Load
Materials: C-Mn Steel, Mild Steel, Stainless Steel
Surface treatment: sandblasting to S2.5 + one layer of epoxy shop primer, Polished, Galvanized, customized surface treatment available.
Classification Certificates:CCS, NK, BV, ABS, DNV-GL, LR, KR, IRS, RS, RINA.