2025 Ronstan Marine Catalogue - Catalog - Page 66
KEELBOAT BLOCKS
Series 125 Orbit
64
© Contest Yachts
RF129100A
RF129110A
RF129109A
Suits use with RF2437-16 removable
lashing padeye. See page 209 for details.
RF129151A
1 x 8mm (5/16”)
2 x 12mm (7/16”)
Exceptionally high strength-to-weight ratio.
Foot block cover plate can be removed for service
access without removing fixing bolts.
Head posts of swivel blocks can be locked
at 0° or 90°.
RF129110A removable becket pin allows
lines to be spliced prior to fitting.
PRODUCT No.
DESCRIPTION
Ball Bearing
RF129100A
RF129109A
RF129110A
RF129151A
Single block, universal head
Lashing block
Single block, becket, universal head
Foot block, single
Primary mainsheet blocks on boats
to 21m (69ft).
Cheek plates: Fully machined aluminium alloy.
Secondary mainsheet blocks, spinnaker systems and
halyards on boats to 25m (82ft).
Needle rollers: Torlon®.
Sheave: Aluminium alloy.
Running backstay systems on boats
to 18m (60ft).
SHEAVE
DIAM.
mm
MAX.
ROPE
mm
125
125
125
125
18
18
18
18
PIN/EYE
DIAM. M.W.L.
mm
kg
12.7
12.7
-
6000
6500
6000
5000
Ball bearings: High compression strength acetal.
(RF129109A: Torlon®)
Forged shackle and head post:
Grade 17-4PH stainless steel.
B.L.
kg
WEIGHT
g
SHEAVE
DIAM.
in
MAX.
ROPE
in
12000
19500
12000
10000
1240
930
1330
750
5
5
5
5
3/4
3/4
3/4
3/4
PIN/EYE
DIAM. M.W.L.
in
lb
1/2
1/2
-
13200
14330
13200
11020
B.L.
lb
WEIGHT
oz
26400
42990
26400
22050
43.7
32.8
46.9
26.5
