2025 Ronstan Marine Catalogue - Catalog - Page 250
INDUSTRIAL PULLEY BLOCKS
Series 60
237
RZ1600
RZ1603
RZ1611
RZ1607
RF617H
30°
60°
Fixed
end
RZ1611
TYPICAL
PURCHASE
SYSTEMS
Moving
end
RZ1600
Ground based
operation
Fixed end
Fixed end
Fixed end
Fixed end
Single
Single,
becket
Double
Double,
becket
Triple
Triple,
becket
100
KG
pull
50
KG
pull
33
KG
pull
25
KG
pull
20
KG
pull
17
KG
pull
Single
Single,
becket
Double,
becket
Triple
MECHANICAL
ADVANTAGE*
Load rated.
Fully articulating head/attachment.
Durable, low friction acetal polymer sheave.
Double
100 Moving end
KG
100 Moving end
KG
100 Moving end
KG
100 Moving end
KG
100 Moving end
1:1
2:1
3:1
4:1
5:1
6:1
RZ1611 has a cleating angle of 60° from the
mounting plane and is ideal for ‘remote’ operation
as in the case of a ground based assistant raising
tools or equipment to an overhead worker.
DESCRIPTION
Industrial Pulley Blocks
RF617H
Shackle, 6mm (1/4”) screw pin with security wire hole
RZ1600
Single block, swivel shackle head
RZ1603
Single block, becket, swivel shackle head
RZ1607
Single block, becket, 30˚cleat, swivel shackle head
RZ1611
Single block, becket, 60˚cleat, swivel shackle head
SHEAVE
DIAM.
mm
MAX.
ROPE
mm
PIN
DIAM.
mm
60
60
60
60
12
12
12
12
6
6
6
6
6
*1 MWL based on maximum allowable line load through cleat of 300kg (660lb), 2:1 purchase.
*2 Uniformly distributed load on shackle; i.e. load applied across the full width of the shackle pin. See page 200 for full details.
M.W.L.
kg
1000*2
1000
1000
600*1
600*1
B.L.
kg
2000*2
2000
2000
2000
2000
KG
Grade 316 stainless steel side plate/cheeks,
powder coated black.
Fibre reinforced polymer rope cleats.
Grade 316 stainless steel head, shackle,
becket and fastenings.
UV stabilised acetal sheaves.
PRODUCT No.
Fixed end
100 Moving end
KG
Weight of tools or equipment
being raised or lowered
Fixed end
WEIGHT
g
SHEAVE
DIAM.
in
MAX.
ROPE
in
PIN
DIAM.
in
25
390
460
705
795
2 3/8
2 3/8
2 3/8
2 3/8
1/2
1/2
1/2
1/2
1/4
1/4
1/4
1/4
1/4
M.W.L.
lb
2200*2
2200
2200
1320*1
1320*1
B.L.
lb
4410*2
4410
4410
4410
4410
WEIGHT
oz
0.9
13.8
16.3
24.9
28.1
