2025 Ronstan Marine Catalogue - Catalog - Page 30
SPORTS BLOCKS
Series 50 & 60 Utility
28
RF51101
RF51100
RF51200
RF51110
RF51210
RF51300
SERIES 60
RF51111
RF150
4.8mm (3/16”) pin,
suits single and
fiddle blocks
RF151
6mm (1/4”) pin,
suits S50 double and triple
blocks & S60 single block
Self-lubricating acetal polymer sheave
ensures low friction and extreme durability.
High static and dynamic load capacity.
Long service life, virtually maintenance free.
PRODUCT No.
DESCRIPTION
RF66100
RF321
Suits swivel
shackle head
blocks
RF1055
Suits shackle
head blocks
Captive Lock™ universal head can be fixed at
0° or 90°, or left free to swivel on S50 single
and fiddle blocks.
RF51010
Snap-in keyhole
becket pin
Removable becket pins allow lines to be spliced prior
to fitting and are locked into position without the use
of split rings or tools.
Double & triple blocks have a swivel shackle head for
full 360° rotation (non-locking).
SHEAVE
DIAM.
mm
MAX.
ROPE
mm
PIN
DIAM.
mm
M.W.L.
kg
B.L.
kg
WEIGHT
g
SHEAVE
DIAM.
in.
MAX.
ROPE
in.
PIN
DIAM.
in.
M.W.L.
lb
B.L.
lb
WEIGHT
oz
Series 50 RF51100
RF51101
RF51110
RF51111
RF51200
RF51210
RF51300
All Purpose
Single block, universal head
Single block, loop head
Single block, becket, universal head
Single block, becket, loop head
Double block, swivel shackle head (non-locking)
Double block, becket, swivel shackle head (non-locking)
Triple block, swivel shackle head (non-locking)
50
50
50
50
50
50
50
12
12
12
12
12
12
12
5
5
6
6
6
750
750
750
750
1000
1000
1200
1500
1500
1500
1500
2000
2000
2400
118
98
134
114
255
271
369
2
2
2
2
2
2
2
1/2
1/2
1/2
1/2
1/2
1/2
1/2
3/16
3/16
1/4
1/4
1/4
1650
1650
1650
1650
2200
2200
2650
3310
3310
3310
3310
4410
4410
5290
4.2
3.5
4.7
4.0
9.0
9.6
13.0
Series 60 RF66100
All Purpose
Single block, swivel shackle head (non-locking)
60
14
6
1100
2200
248
2 3/8
9/16
1/4
2430
4850
8.7
