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280
SHEAVE
DIAM.
MAX.
ROPE
PIN
DIAM. M.W.L. B.L. WEIGHT
SHEAVE
DIAM.
MAX.
ROPE
PIN
DIAM. M.W.L. B.L. WEIGHT
PRODUCT No.
DESCRIPTION
mm mm mm kg kg
g
in.
in.
in.
lb
lb
oz
Orbit Blocks™
RF79100
Single block
75
14
8 2450 4900 340
3
9/16 5/16 5400 10800 12.0
RF79108
Halyard block
75
14 14 2450 4900 251
3
9/16 9/16 5400 10800 8.9
RF79110
Single block, becket
75
14
8 2450 4900 354
3
9/16 5/16 5400 10800 12.5
RF79140
Stand-up block, 90 degree
75
14
-
1990 3980 480
3
9/16 -
4390 8770 16.9
RF79140-60
Stand-up block, 60 degree
75
14
-
1990 3980 480
3
9/16 -
4390 8770 16.9
RF79200
Double block
75
14
8 3400 6800 575
3
9/16 5/16 7500 14990 20.3
Exceptionally high strength-to-weight ratio.
Captive ball bearings for side thrust loads require no side retainer plates, reducing
weight and providing a wider bearing surface for the Torlon
®
needle rollers.
Side cheeks incorporating head structure and hub are precision machined as a
single par t from solid alloy, leaving material only where it contributes to the load
carrying capacity of the block and eliminating the need for additional fasteners.
Head posts of swivel blocks can be locked at 0° or 90°.
Removable becket pin allows lines to be spliced prior to fitting.
Halyard blocks have a removable pin for attachment to deck padeyes or the
mast collar, providing a low lead aft to organisers or winches.
Shape and edge radii of central hole in hub are compatible with fail-safe strops.
Webbing blocks can be used in applications where swivel head and shackle
attachment is not required, to achieve fur ther weight savings.
Stand-up blocks have rubber suppor t bases that relax to 90° (typically for
foreguy/afterguy) or 60° (for halyard and other lead block applications).
Runner blocks have a unique cheek shape and guide rollers to help keep
the line engaged with the sheave.
Foot block base plate and hub section is machined in one piece from a single
block of alloy, for maximum integrity, with mounting bolts seated within the base
plate and hub to minimise bending loads and prevent “racking over” of the block.
Foot block cover plate can be removed for service access without removing the
bolts that secure the block to the deck.
200 RF79
RF79108
79RF 110
9RF7 1 00
RF79140
RF79140-60
4 x 6mm (1/4”)
4 x 6mm (1/4”)
Series 75
