2020 Ronstan Sailboat Hardware Catalogue - Page 44



SPORTS BLOCKS
Wire Blocks, Sheave Boxes & Exit Blocks
42
RF51712
RF41712
RF20711
RF30711
RF20711HL
RF30711HL
2 x 4mm (5/32”)
2 x 5mm (3/16”)
RF20711A
RF30721
RF20711AHL
RF31712
D
2 x 5mm (3/16”)
2 x 4mm (5/32”)
B
A
RF15711
C
2 x 4mm (5/32”)
RF667
RF560
RF418
RF418C
Wire blocks have purpose designed narrow
sheaves and grooves.
PRODUCT No.
SHEAVE
DIAM.
mm
MAX.
WIRE
mm
Sheave Boxes RF31712
RF41712
RF51712
Special Purpose, Nylatron® Sheave
30
8
4
44.0 27 14.0
40
10
5
54.0 33 17.0
50
12
5
62.0 42 21.0
A
mm
B
mm
C
mm
D M.W.L.
mm
kg
5
5
5
375
500
750
RF103
RF104
Exit and sheave boxes are ideal for applications
where lines (rope or wire) need to be led through
decks, bulkheads or spars minimising friction
and chafing.
Wire blocks suit halyards, vang and backstay
applications.
MAX.
ROPE
mm
RF468
BB sheaves: UV stabilised acetal.
SP sheaves: Self-lubricating Nylatron®.
Cheeks & housings: Grade 316 stainless steel.
B.L.
kg
WEIGHT
g
SHEAVE
DIAM.
in
MAX.
ROPE
in
MAX.
WIRE
in
A
in
B
in
C
in
D
in
M.W.L.
lb
B.L.
lb
WEIGHT
oz
800
1000
1500
45
75
145
1 3/16
1 9/16
2
5/16
3/8
1/2
5/32
3/16
3/16
1 3/4
2 1/8
2 7/16
1 1/16
1 5/16
1 5/8
9/16
11/16
13/16
3/16
3/16
3/16
830
1100
1650
1760
2200
3300
1.6
2.6
5.1
SHEAVE
DIAM.
mm
MAX.
ROPE
mm
MAX.
WIRE
mm
M.W.L.
kg
B.L.
kg
WEIGHT
g
SHEAVE
DIAM.
in
MAX.
ROPE
in
MAX.
WIRE
in
M.W.L.
lb
B.L.
lb
WEIGHT
oz
PRODUCT No.
DESCRIPTION
Exit Blocks RF20711
RF20711A
RF30711
RF30721
RF15711
Ball Bearing
Single exit block, cover plate
Single exit block, side tabs
Single exit block, cover plate
Double exit block, cover plate
Exit block
20
20
30
30
15
6
6
8
8
5
-
250
250
300
300
120
1000
1000
750
750
550
22
22
35
60
14
3/4
3/4
1 3/16
1 3/16
5/8
1/4
1/4
5/16
5/16
3/16
-
550
550
660
660
260
2200
2200
1650
1650
1210
0.8
0.8
1.2
2.1
0.5
Exit Blocks RF20711HL
RF20711AHL
RF30711HL
Special Purpose, Nylatron® Sheave
Single exit block, cover plate
Single exit block, side tabs
Single exit block, cover plate
20
20
30
6
6
8
3
3
3
275
275
300
1000
1000
750
22
22
43
3/4
3/4
1 3/16
1/4
1/4
5/16
1/8
1/8
1/8
610
610
660
2200
2200
1650
0.8
0.8
1.5
Wire Blocks RF103
RF104
RF418
RF418C
RF468
RF560
RF667
Special Purpose, Nylatron® Sheave
Single block, tubular rivet head, removable sheave
Single block, ferrule top, removable sheave
Single block, tubular rivet head
Single block, removable clevis pin head
Single block, ferrule top, removable sheave
Single block, ferrule eye
Single block, loop top
45
45
25
25
25
20
20
6
6
3
3
3
3
2
6
6
3
3
3
3
2
850
850
450
450
450
250
200
1700
1700
900
900
900
500
400
88
80
40
39
33
20
20
1 3/4
1 3/4
1
1
1
3/4
3/4
1/4
1/4
1/8
1/8
1/8
1/8
3/32
1/4
1/4
1/8
1/8
1/8
1/8
3/32
1870
1870
990
990
990
550
440
3740
3740
1980
1980
1980
1100
880
3.1
2.8
1.4
1.4
1.2
0.7
0.7

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