2025 Ronstan Marine Catalogue - Catalog - Page 65
KEELBOAT BLOCKS
Series 100A Orbit
63
© Contest Yachts
RF109100A
RF109109A
RF109110A
Suits use with RF2437-16 removable
lashing padeye. See page 209 for details.
Exceptionally high strength-to-weight ratio.
Primary mainsheet, halyard and spinnaker systems on
boats to 18m (60ft).
Cheek plates: Fully machined aluminium alloy.
Captive ball bearings for side thrust loads.
Head posts of swivel blocks can be locked
at 0° or 90°.
Secondary mainsheet, vang blocks, spinnaker systems
and halyards on boats to 22m (72ft).
Needle rollers: Torlon®.
RF109110A removable becket pin allows
lines to be spliced prior to fitting.
Running backstay systems on boats to 16m (53ft).
Ball bearings: High compression strength acetal.
(RF109109A: Torlon®)
General control line and lead block applications on
larger yachts.
Forged shackle and head post:
Grade 17-4PH stainless steel.
DESCRIPTION
SHEAVE
DIAM.
mm
MAX.
ROPE
mm
Ball Bearing
RF109100A
Single block, universal head
RF109109A
Lashing block
RF109110A
Single block, becket, universal head
100
100
100
16
16
16
PRODUCT No.
PIN/EYE
DIAM. M.W.L.
mm
kg
10.0
10.0
4250
5500
4250
Sheave: Aluminium alloy.
B.L.
kg
WEIGHT
g
SHEAVE
DIAM.
in
MAX.
ROPE
in
8500
13750
8500
720
450
790
4
4
4
5/8
5/8
5/8
PIN/EYE
DIAM. M.W.L.
in
lb
3/8
3/8
9350
12120
9350
B.L.
lb
WEIGHT
oz
18700
30310
18700
25.4
15.9
27.9
