2022 Ronstan Marine Catalogue - Flipbook - Page 18
SPORTS BLOCKS
16
Series 30 Utility
RF30101
RF30100
RF30101HL
RF30100HL
RF30111
RF30110
RF30141
RF30285
2 x 5mm (3/16”)
RF30711
RF30721
RF30711HL
RF30174
RF30171
RF34000
2 x 5mm (3/16”)
2 x 5mm (3/16”)
2 x 5mm (3/16”)
Linked blocks are used for barber haulers,
cunninghams and spinnaker pole
launching systems.
Primary lead blocks on dinghies and catamarans.
Control lines on larger yachts.
Exit blocks minimise friction in lines passing through
the deck or exiting masts and booms.
PRODUCT No.
Ball Bearing
RF30100
RF30101
RF30110
RF30111
RF30141
RF30171
RF30174
RF30285
RF30711
RF30721
RF34000
RF34108
DESCRIPTION
Single block, swivel shackle head
Single block, loop head
Single block, becket, swivel shackle head
Single block, becket, loop head
Stand-up block
Upright lead block
Pivoting lead block
Linked blocks, S30 & S20
Single exit block
Double exit block
Sheave, alloy, Torlon® balls
Single, removable loop head, alloy sheave,
Torlon® balls
Special Purpose - Nylatron® Sheave
RF30100HL
Single block, swivel shackle head
RF30101HL
Single block, loop head
RF30711HL
Single exit block
RF134
RF134A (countersunk holes)
RF615A
4mm (5/32”) pin,
suits swivel blocks
Upright lead blocks are a low profile solution
for leading halyards or other rig and sail controls
back to cleats or jammers. Pivoting version suits
controls that need to be trimmed from either
side of the boat.
BB sheaves: UV stabilised acetal.
SP sheaves: Self-lubricating Nylatron®.
SHEAVE MAX.
DIAM. ROPE
mm
mm
6mm (7/32”)
2 x 5mm (3/16”)
MAX. PIN
WIRE DIAM. M.W.L.
mm mm
kg
B.L.
kg
WEIGHT
g
RF34108
RF323
Ball bearings: Acetal (RF34000 & RF34108
use Torlon® ball bearings).
Cheeks: Impact modified, fibre reinforced
and UV stabilised nylon.
Load straps & head fittings: Grade 316
stainless steel.
SHEAVE
DIAM.
in.
MAX.
ROPE
in.
MAX. PIN
WIRE DIAM. M.W.L.
in.
in.
lb
B.L.
lb
WEIGHT
oz
30
30
30
30
30
30
30
30+20
30
30
30
8
8
8
8
8
8
8
8+6
8
8
5
-
4
4
-
300
300
300
300
300
300
300
250
300
300
165
750
750
750
750
750
750
650
550
750
750
330
34
28
40
34
38
30
50
44
35
60
10
1 3/16
1 3/16
1 3/16
1 3/16
1 3/16
1 3/16
1 3/16
1 3/16+3/4
1 3/16
1 3/16
1 3/16
5/16
5/16
5/16
5/16
5/16
5/16
5/16
5/16+1/4
5/16
5/16
3/16
-
5/32
5/32
-
660
660
660
660
660
660
660
550
660
660
360
1650
1650
1650
1650
1650
1650
1430
1210
1650
1650
730
1.2
1.0
1.4
1.2
1.3
1.1
1.8
1.6
1.2
2.1
0.4
30
5
-
6
165
675
36
1 3/16
3/16
-
7/32
360
1490
1.3
30
30
30
8
8
8
3
3
3
4
-
375
375
300
750
750
750
28
28
43
1 3/16
1 3/16
1 3/16
5/16
5/16
5/16
1/8
1/8
1/8
5/32
-
830
830
660
1650
1650
1650
1.0
1.0
1.5
