2025 Ronstan Marine Catalogue - Catalog - Page 20
SPORTS BLOCKS
Series 40 Orbit
18
RF48330
RF48120
RF46330
RF45711N
RF46530
BECKET
RF261 Clevis Pin
BECKET
RF113 Split Ring
Headposts freely swivel or can be locked in 0°or 90°.
Composite C-Cleat™ and fairlead.
Removable becket pins allow lines to be spliced prior
to fitting and are secured using a split ring.
RF46330 & RF46530 replaceable ratchet sheave,
RF46000.
2 x 6mm (1/4”)
2 x 6mm (1/4”)
Mainsheet systems and spinnaker sheets on dinghies,
off-the-beach catamarans and sportsboats to 8m
(26ft).
2 x 6mm (1/4”)
BB Sheave and balls: High compression strength
acetal.
HHL sheave and bearing race: Grade 2205 stainless
steel with Grade 304 stainless steel ball bearings
Halyard, vang and backstay applications on boats to
8m (26ft).
Frame/cheeks: Toughened, glass fibre reinforced
nylon.
Control line applications on larger yachts.
Exit block housing: Anodised aluminium.
Exit Blocks minimise friction in lines passing through
the deck or exiting masts and booms.
Head fittings, hubs and fixtures: Grade 316 stainless
steel.
SHEAVE MAX. PIN
DIAM. ROPE DIAM.
mm
mm
mm
PRODUCT No.
DESCRIPTION
Ball Bearing
RF48120
RF48330
RF46330
RF46530
RF46000
Single block, adjustable cleat, swivel shackle head
Triple block, becket. adjustable cleat, swivel shackle head
Triple block, becket, adjustable cleat, ratchet, swivel shackle head
Quin block, becket, adjustable cleat, ratchet, swivel shackle head
Ratchet sheave
40
40
40
40
40
10
10
9
9
9
4
5
5
5
-
Exit Blocks
RF45711N
RF45711
RF45711HL
Exit Block, AP, Narrow
Exit Block, BB
Exit Block, HHL
40
40
40
8
10
10
-
*1 MWL based on maximum allowable line load through cleat of 175kg (385lb), 1:1 purchase.
*2 Total block load. Becket MWL 400kg (880lb), BL 800kg (1760lb).
*3 MWL = 400kg dynamic load, 800kg static load.
RF45711HL
RF45711
M.W.L.
kg
B.L. WEIGHT
kg
g
175*1
600*1&2
600*1&2
600*1&2
-
800
1200
1200
1200
-
176
227
270
368
20
400/800*3 1600
400/800*3 2000
1000 2000
65
77
123
SHEAVE
DIAM.
in.
MAX. PIN
ROPE DIAM.
in.
in.
M.W.L.
lb
B.L.
lb
WEIGHT
oz
1 9/16
1 9/16
1 9/16
1 9/16
1 9/16
3/8
3/8
5/16
5/16
5/16
5/32
3/16
3/16
3/16
-
385*1
1320*1&2
1320*1&2
1320*1&2
-
1760
2650
2650
2650
-
6.2
8.0
9.5
13.0
0.7
1 9/16
1 9/16
1 9/16
5/16
3/8
3/8
-
880/1760*3 3530
880/1760*3 4410
2200
4410
9.5
9.5
9.5
