INSTRUCTIONS
High-Load Snatch Blocks
N15W24983 Bluemound Road • Pewaukee, WI 53072 U.S.A.
Telephone: (262) 691-3320 • Fax: (262) 701-5780 • Web: harken.com • E-mail: [email protected]
WARNING! Strictly follow all instructions to avoid an accident, damage to your vessel,
personal injury, or death. See www.harken.com/manuals for additional safety information.
= Incorrect. Avoid to prevent accidents.
High-load snatch blocks have sideplates that pivot open to make them easy to load onto sheets. They are perfect for temporary leads, line deflection, and static
line functions requiring small adjustments. A fixed loop soft attach carries the block’s primary load and articulates for a fair lead. The captured Velcro
®
strap
holds the block securely closed when sideplates are aligned. The strap has a broad reflective tab for easier operation with gloves.
Harken composite bearing technology (ULC) ensures sheaves turn smoothly and maintain efficiency under extreme loading. Snap-fit Torlon® bearings carry
sideloads. An integral headspacer prevents Hard Lube-anodized aluminum sideplates from deflecting and binding. The wide sheave allows a range of line
diameters.
Anchor point
Example - Line making 180
°
wrap
General Warnings
HL Snatch blocks are supplied by Harken with strops. Loads listed above assume that the standard Harken supplied strops are used.
WARNING! Work with a rigger when using alternate spliced strops or fastenings. Knots or incorrect splices weaken strops
considerably. Use only Harken-supplied replacement strops, or work with a qualified rigging supplier when replacing strops.
Specifications
Part No.
Sheave diameter
Max line Ø
Maximum working load
Breaking load
Description
mm
in
mm
in
kg
lb
kg
lb
3299
2.3T HL Snatch block
38.5
1.5
11
7/16
2300
5069
4600
10138
3300
5T HL Snatch block
56
2.2
16
5/8
5000
11020
10000
22040
3301
8T HL Snatch block
75
3
18
3/4
8000
17632
16000
35264
3302
12T HL Snatch block
101
4
30
1
3/16
12000
26448
24000
52896
3303
15T HL Snatch block
125
5
30
1
3/16
15000
33060
30000
66120
Velcro is a registered trademark of Velcro Industries B.V.I
Torlon is a registered trademark of Solvay Advanced Polymers L. L. C.
Warning! Block loads increase when the line turns at a greater angle. Block loads double when the line turns 180 degrees.
See example above. Use block loading factors. Select blocks and application carefully.
Strop
Velcro
band
Closed slot
Terms
Velcro band
Head
Maximum working load - metric tons
Screw
Thimble
Beta
cheek
Alpha
cheek
Open
slot
Strop
ball
Large strop
eye
