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257
Series 55
BALL BEARING
SHEAVE DIAM. MAX. ROPE M.W.L.
B.L.
WEIGHT SHEAVE DIAM.
MAX. ROPE M.W.L.
B.L.
WEIGHT
PRODUCT No.
DESCRIPTION
mm
mm
kg
kg
g
in.
in.
lb
lb
oz
Ball Bearing
RF55110
Single, becket, swivel shackle head
55
10
500*
1
1000
88
2 5/32
3/8
1100*
1
2200
3.1
RF55210
Double, becket, swivel shackle head
55
10
750*
2
1500
172
2 5/32
3/8
1650*
2
3300
6.1
RF55310
Triple, becket, swivel shackle head
55
10
750*
2
1500
244
2 5/32
3/8
1650*
2
3300
8.6
RF55410
Quad, becket, swivel shackle head
55
10
750*
2
1500
316
2 5/32
3/8
1650*
2
3300
11.2
*1 Total block load. Load on becket not to exceed 50% of block load. ie. MWL 250kg (550lb), BL 500kg (1100lb). Suitable for 2:1 system at rated block load.
*2 Total block load. Load on becket not to exceed 33% of block load. ie. MWL 250kg (550lb), BL 500kg (1100lb).
RF55310
RF55210
RF55410
RF55410
RF45201
RF9004-09
RF56330B
9:1 Mainsheet System
Swivel shackle head for unlimited block rotation.
Stainless steel shackle head for ultimate durability and compatibility with harsh
fixing points.
Single inner cheeks on multi-sheave blocks for reduced weight and bulk.
Ultra low profile integrated becket.
Mainsheet systems and spinnaker sheets on dinghies, catamarans, spor tsboats
and small keel boats to 9m (30ft).
RF55410 when paired with a RF56330B and a RF45201 lashed to the becket
with a RF9004-09, produces a powerful 9:1 mainsheet system for use on
catamarans to 5.5m (18ft). 8mm (5/16) rope recommended.
Halyard, vang and backstay applications on boats to 8m (26ft).
Control line applications on larger yachts.
Swivel shackle head fitting: grade 316 stainless steel.
RF55110
RF150
4.8mm (3/16”) pin.
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