2025 Ronstan Marine Catalogue - Catalog - Page 39
SPORTS BLOCKS
Series 60 Ultimate Ratchet Block™
37
RF62100
RF62175
4 x 5mm (3/16”)
RF62174
Clicking
Crew
RF62000
Load
Low
lead in
Pivoting
4 x 5mm (3/16”)
Effective extruded hole design provides
up to 20:1 holding power.
Dinghy mainsheet systems - when maximum
holding power is required.
Sheave & cheek plates: Anodised aluminium.
On/Off switch is fitted to both sides of block
so it can be used on port or starboard side.
Switch can be removed from one side if required.
RF62100 mainsheet systems on sportsboats
using RF7 mainsheet swivel cleat unit.
Ratchet pawl: High strength Torlon®.
Unique On/Off switch mechanism can be
operated under load.
Spinnaker sheets on sportsboats and
small keelboats (lateral lead blocks).
Ball bearings: High compression strength acetal.
Swivel shackle head fitting: Grade 316
stainless steel.
Control line applications on larger yachts.
Low friction ball bearing system.
Pivoting Lead blocks maintain alignment
and keep lines close to the deck.
PRODUCT No.
DESCRIPTION
Ball Bearing
RF62000
Sheave
RF62100
Single block, manual, swivel shackle head
RF62174
Pivoting low lead block
RF62175
Pivoting low lead block, cleat
* Line load through cleat not to exceed 175kg (385lb).
SHEAVE
DIAM.
mm
MAX.
ROPE
mm
60
60
60
60
10
10
10
10
PIN
DIAM. M.W.L.
mm
kg
5
-
250
250
250*
B.L.
kg
WEIGHT
g
SHEAVE
DIAM.
in.
MAX.
ROPE
in.
1370
1370
1370
44
135
147
285
2 3/8
2 3/8
2 3/8
2 3/8
3/8
3/8
3/8
3/8
PIN
DIAM. M.W.L.
in.
lb
3/16
-
550
550
550*
B.L.
lb
WEIGHT
oz
3020
3020
3020
1.6
5.3
5.2
10.1
