2025 Ronstan Marine Catalogue - Catalog - Page 24
SPORTS BLOCKS
Series 40 Utility
22
RF40100
RF40101
RF40111
RF150
4.8mm
(3/16”) pin
RF40100HL
RF40200
RF40300
RF40110
RF40210
RF40310
RF321
Suits shackle
head blocks
RF134
RF134A (countersunk holes)
2-stage ball bearing system.
Cheek cut-outs for easy bearing maintenance.
Light weight.
SP versions feature a Nylatron® sheave
suitable for both rope and wire.
Removable becket pins allow lines to be spliced prior
to fitting and are locked into position without the use
of split rings or tools.
PRODUCT No.
DESCRIPTION
RF41010
Snap-in keyhole
becket pin
RF2454
Suits loop
head blocks
Double & triple blocks have a swivel shackle head for
full 360° rotation.
Captive Lock™ universal head can be fixed at
0° or 90°, or left free to swivel on single blocks.
SHEAVE
DIAM.
mm
MAX. MAX. PIN
ROPE WIRE DIAM. M.W.L. B.L. WEIGHT
mm mm mm
kg
kg
g
SHEAVE
DIAM.
in.
MAX. MAX. PIN
ROPE WIRE DIAM. M.W.L.
in.
in.
in.
lb
B.L. WEIGHT
lb
oz
Ball Bearing
RF40100
Single block, universal head
RF40101
Single block, loop head
RF40110
Single block, becket, universal head
RF40111
Single block, becket, loop head
RF40200
Double block, swivel shackle head (non-locking)
RF40210
Double block, becket, swivel shackle head (non-locking)
RF40300
Triple block, swivel shackle head (non-locking)
RF40310
Triple block, becket, swivel shackle head (non-locking)
40
40
40
40
40
40
40
40
10
10
10
10
10
10
10
10
-
5
5
5
5
5
5
350
350
350
350
500
500
600
600
1000
1000
1000
1000
1200
1200
1400
1400
70
53
79
60
134
142
194
209
1 9/16
1 9/16
1 9/16
1 9/16
1 9/16
1 9/16
1 9/16
1 9/16
3/8
3/8
3/8
3/8
3/8
3/8
3/8
3/8
-
3/16
3/16
3/16
3/16
3/16
3/16
770
770
770
770
1100
1100
1320
1320
2200
2200
2200
2200
2650
2650
3090
3090
2.5
1.9
2.8
2.1
4.7
5.0
6.9
7.4
Special Purpose - Nylatron® Sheave
RF40100HL
Single block, universal head
40
10
4
5
500
1000
69
1 9/16
3/8
5/32
3/16
1100 2200
2.4
