2020 Ronstan Sailboat Hardware Catalogue - Page 12



SPORTS BLOCKS
10
Series 20 Utility
RF20202
RF20302
RF20332
RF20101
RF20100
RF20101HL
RF20141
RF20111
RF20212
RF20312
RF20281
RF20284
4mm (5/32”)
RF498
RF1850S
3mm (1/8”) slotted pin, suits loop top single blocks
BL reduced to 500kg (1100lb)
RF318
Suits RF20101 & RF20111
Precision moulded acetal sheaves running
on stainless steel ball bearings provide high
performance & low friction.
SP versions feature a Nylatron® sheave
suitable for rope and wire.
High static and dynamic load capacity.
Light weight.
Versatile head fittings.
PRODUCT No.
DESCRIPTION
Ball Bearing
RF20100
RF20101
RF20111
RF20141
RF20202
RF20212
RF20281
RF20284
RF20302
RF20312
RF20332
Single block, swivel shackle head
Single block, loop head
Single block, becket, loop head
Stand-up block
Double block, 2-axis shackle head
Double block, becket, 2-axis shackle head
Double block, in-line
Linked blocks, S20 & S20
Triple block, 2-axis shackle head
Triple block, becket, 2-axis shackle head
Triple block, becket, cam cleat, 2-axis shackle head
Special Purpose - Nylatron® Sheave
RF20101HL
Single block, loop head
* Line load through cleat not to exceed 125kg (275lb).
Single blocks are available with swivel head
or 2 way loop top.
Double & triple blocks are supplied with shackle and
have a 2 way head that can be fixed at
0° or 90°.
Double & triple blocks allow the creation of powerful
purchase systems.
Exit blocks minimise friction in lines passing through
the deck or exiting masts and booms. Supplied with
cover plate, or low profile version with side tabs
only.
Linked blocks are used for dinghy barber haulers,
cunninghams and spinnaker pole launching
systems.
Upright lead blocks are available in low
profile fixed or pivoting options.
SHEAVE
DIAM.
mm
MAX. MAX. PIN
ROPE WIRE DIAM. M.W.L.
mm
mm
mm
kg
B.L.
kg
WEIGHT
g
SHEAVE
DIAM.
in.
MAX. MAX. PIN
ROPE WIRE DIAM. M.W.L.
in.
in.
in.
lb
B.L.
lb
WEIGHT
oz
20
20
20
20
20
20
20
20
20
20
20
6
6
6
6
6
6
6
6
6
6
6
-
3
4
4
4
4
4
250
250
250
250
350
350
250
250
400
400
400*
550
550
550
550
700
700
550
550
850
850
850
20
16
18
20
42
44
28
30
62
64
122
3/4
3/4
3/4
3/4
3/4
3/4
3/4
3/4
3/4
3/4
3/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
-
1/8
5/32
5/32
5/32
5/32
5/32
550
550
550
550
770
770
550
550
880
880
880*
1210
1210
1210
1210
1540
1540
1210
1210
1870
1870
1870
0.7
0.6
0.6
0.7
1.5
1.6
1.0
1.1
2.2
2.3
4.3
20
6
3
-
275
550
14
3/4
1/4
1/8
-
610
1210
0.5

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