2025 Ronstan Marine Catalogue - Catalog - Page 43
SPORTS BLOCKS
Deck Organisers
41
RF41841
RF41831
RF41821
6 x 6mm
(1/4”)
5 x 6mm
(1/4”)
RF48000
4 x 6mm
(1/4”)
RF61841
RF61831
RF61821
6 x 8mm
(5/16”)
5 x 8mm
(5/16”)
4 x 8mm
(5/16”)
Deck organisers are an effective means
of deflecting halyards and control lines
to winches, stoppers and cleats.
All sizes can be stacked to create double
versions - MWL of the top sheaves must not
exceed 50% of the total block load rating.
Line deflection on larger yachts (depending
on load and angle of deflection).
All Purpose bearing system provides
maximum static load capacity.
Series 40 - halyard and control line deflection
on boats to 11m (36ft).
Sheaves: UV stabilised acetal.
Lightweight design with cheek cut-outs
for easy bearing maintenance.
Series 60 - halyard and control line deflection
on boats to 14m (46ft).
PRODUCT No. DESCRIPTION
M.W.L.
B.L.
SHEAVE MAX.
HOLE
DIAM. ROPE LENGTH SPACING (per sheave) (per sheave) WEIGHT
mm
mm
kg
kg
g
mm
mm
Cheek plates: Anodised aluminium.
Hubs: Grade 316 stainless steel.
SHEAVE
DIAM.
in
MAX.
HOLE
M.W.L.
B.L.
ROPE LENGTH SPACING (per sheave) (per sheave) WEIGHT
in
in
in
lb
lb
oz
Series 40 RF41821
RF41831
RF41841
RF48000
All Purpose
Double sheave organiser
Triple sheave organiser
Quadruple sheave organiser
Sheave BB, 15.5mm (5/8”) width
40
40
40
40
12
12
12
10
116
164
213
-
48.5
48.5
48.5
-
500
500
500
400
1000
1000
1000
-
101
142
185
30
1 9/16
1 9/16
1 9/16
1 9/16
1/2
1/2
1/2
3/8
Series 60 RF61821
RF61831
RF61841
All Purpose
Double sheave organiser
Triple sheave organiser
Quadruple sheave organiser
60
60
60
14
14
14
164
234
304
70.0
70.0
70.0
1000
1000
1000
2000
2000
2000
271
392
511
2 3/8
2 3/8
2 3/8
9/16 6 15/32
9/16 9 7/32
9/16 11 31/32
4 9/16
6 15/32
8 13/32
-
1 29/32
1 29/32
1 29/32
-
1100
1100
1100
880
2200
2200
2200
-
3.6
5.0
6.5
1.1
2 3/4
2 3/4
2 3/4
2200
2200
2200
4410
4410
4410
9.6
13.8
18.0
