PULLEYS – PERFORMANCE PACKED ENGINEERING
Harken pulleys facilitate low-friction pulling power for any fiber-rope application. Designed to be as lightweight and small as possible for the load capacity, they are easy to transport and install. A variety of configurations and sizes are available.
All are certified to Machinery Directive EN13157.

EN13157 Pulleys
EN13157 Pulleys

HARKEN HAS A SOLUTION TO ANY PULLING PROBLEM.

We offer over 470 types of pulleys with breaking loads from 0.5 to 946 kN. Sheave diameters range from 16 – 150 mm with the option of single, double, and triple sheaves featuring ratchets, cleats, beckets, opening sideplates, and padeye attachments. Attachment options include fixed head, swivel head, cheek attach, or soft attach.

Simple to use and ideal for diverse applications
Harken pulleys can be used in rope-handling applications across many industries:

  • Theatrical
  • Stunt work
  • Cable laying
  • Load towing/securing

Maintenance is easy
The simple construction requires no lubrication. Simply flush with fresh water to keep bearings free rolling.

Black-magic

Black Magic® Air® pulleys
With high strength-to-weight ratios and free-rolling, high-load roller bearings, Black Magic Air pulleys handle high dynamic and static loads where friction is an issue.

Midrange

 

 

 

 

Classic Midrange
These robust pulleys are ideal for handling high loads. Free-running Delrin® ball bearings roll on flat races to allow fast haul and release under high or low loads.

 

Hexaratchet

Classic Midrange Hexaratchet
Midrange Hexaratchet pulleys grip loaded lines, relieving holding loads while maintaining quick ease and haul with complete control. A switch on the side engages and disengages the ratchet mechanism.

ESP

ESP pulleys
Sheaves feature sleeve bearings to handle high static loads. Ball bearings handle sideloads. Aluminum sideplates make ESP pulleys strong and durable.

T2

T2 soft-attach pulleys
These lightweight, low-friction pulleys tie, splice, or lash to almost anything. With no metal components, they are exceptionally corrosion and conduction-proof as well as spark free.

ce pulleys

Certification
Harken offers a wide range of EN13157 certified pulleys for hand-operated lifting equipment.

 

The table below includes a selection from Harken’s range of CE pulleys.

 

PULLEYS’ SPECIFICATIONS

Part No.

Description

Lenght

Weight

Max fibre rope**

Max rated load

Break Load

   

in

mm

oz

g

in

mm

kN

kN

IN340

29mm block – swivel

2 5/8

66

0.9

26

5/16

8

1

4

IN114

29mm wire upright pulley

1 1/2

38

1.5

43

5/16

8

2

8

IN2660

75mm single carbo pulley

5 3/8

137

6.9

195

9/16

14

3.5

15

IN2661

75mm single carbo pulley with becket

6 1/2

165

7.5

214

9/16

14

3.5

15

IN6059

57mm ESP single swivel pulley

5 1/2

140

7.7

218

5/8

16

4

16

IN6050

57mm ESP teardrop pulley

3 11/16

93.5

4.3

122

5/8

16

4

16

IN308

single 2″ wire block

5.25

149

1/4

6

4

16

IN1540

76mm midrange single pulley

6 1/8

156

13

267

9/16

14

5

20

IN1549SSP

76mm midrange single pulley hexaratchet clockwise ratchet

6 1/8

156

14

297

9/16

14

5

20

IN6058

75mm ESP fiddle pulley

8 3/8

213

14.7

415

3/4

19

6.5

26

IN3215

57mm single swivel pulley

4 11/16

119

5.36

152

7/16

12

5

20

IN6056

57mm ESP teardrop pulley

4 5/8

117

7.8

   221

3/4

19

6

24

IN2662

75mm double carbo pulley

6

152

14.2

402

9/16

14

6

24.5

IN6058

75mm ESP swivel pulley

6 1/4

159

    12

340

3/4

19

6.5

26

IN6100

100mm ESP swivel pulley

8 1/8

206

28.5

808

3/4

19

10

40

IN3240

75mm single swivel pulley w/pinhead

4 7/16

113

8.72

247

9/16

14

12

48

IN3233HEX

75mm double swivel pulley w/hex shackle

5 1/4

134

25.44

721

9/16

14

12

48

IN3232

75mm single swivel pulley w/becket

6 3/16

157

12.8

363

9/16

14

12

48

IN3231HEX

75mm single swivel pulley w/hex shackle

5 1/8

129

11.68

331

9/16

14

12

48

IN3231

75mm single swivel pulley

5 1/8

129

11.68

331

9/16

14

12

48

IN3246

100mm single swivel pulley

8

43

21.98

623

5/8

16

15

60

IN3256

125mm single swivel pulley

10

43

36.8

1042

3/4

19

22.5

90

 

Any of our pulleys can be certified.

Please contact us for further information, or visit our marine website to view our entire pulley range.

 

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Purchase Systems
Purchase Systems

Part No. 
IN105 – 6:1 purchase system
443.2624 – 4:1 purchase system (Contact Harken UK)

LIGHTWEIGHT, COMPACT, LOW-FRICTION, CERTIFIED

Harken purchase systems increase operation strength, providing low-friction pulling power in a wide variety of pulling/lifting operations. Systems can be used on their own, or easily combined with an existing system for tensioning, deviation, or casualty transfer. Purchase systems come fully rigged with tamper-evident termination.

Simple to use in load-assist applications
Harken purchase systems are used by emergency services and rescue personnel to help transfer loads and individuals from working ropes to alternates. The systems are also used to transfer loads in deviation, and to take the load when lifting inanimate objects.

Maintenance is easy
To clean, simply flush pulleys with fresh water. As with all equipment, check regularly to make sure it is in good working order. Check rope for chafe and wear. Make sure tamper-evident seals are intact.

LA low friction sheave

Low-friction sheave
Delrin® ball bearings provide low-friction, easy rope release under load. Ball bearings are UV-stabilized for maximum protection.

LA ball bearing cam cleats

Ball bearing cam cleats
Harken ball bearing cam cleats hold rope securely and release easily under load. Multiple rows of ball bearings reduce friction. The cam’s V-shape guides rope for easy entry.

LA fairlead

Tamper evident
Purchase systems are supplied prereeved and fully assembled. The securing knot is sealed to prevent irreparable damage to the system.

PS CE

CE certification
CE certified under EN 13157 (Machinery Directive). IN105 has a maximum rated load of 1.47 kN; IN2624 has a maximum rated load of 1.98 kN.

Delrin is a registered trademark of E.I duPont de Nemours and Company or its affiliates.

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SBL SNATCH PULLEY
SBL SNATCH PULLEY

Part No. 
IN10636 – Max rated load 106 kN
IN10639 – Max rated load 133 kN
IN11038 – Max rated load 222 kN

THE ULTIMATE IN POWER-TO-WEIGHT EFFICIENCY

SBL (strong but light) Snatch pulleys maximize the benefits of fiber rope within a safer, more ergonomic working environment. Weighing less than 25% of comparable pulleys, they make light work of rigging and deployment. The  hardcoat-anodized sheaves run on high-efficiency composite bearings, reducing rope wear.

Simple to use and ideal for diverse applications
SBL Snatch pulleys can be used for towing, mooring, pulling, and lifting across many industries.

  • Utilities
  • Commercial rigging
  • Offshore
  • Renewables
  • Commercial marine
  • Transport
  • Salvage
  • Military

Maintainence is easy
The simple construction requires no lubrication. Simply flush with fresh water to keep your SBL Snatch pulley free rolling.

SBL design

Design
Side-opening plates allow the pulleys to be rigged easily. The soft attachment system eliminates heavy swivels and shackles.

SBL materials

Materials
Sideplates are hardcoat-anodized, UV-stabilized 6061-T6 aluminum for maximum protection. Sheaves run smoothly and maintain efficiency at high loads using PTFE-coated ULC bearing technology.

SBL materials

Fiber Rope
Snatch pulleys are used with fiber rope up to 25 mm (1″) in diameter. Smooth surfaces and chafe-free design minimize wear.

 

 

 

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Oceanic Cable Block
Oceanic Cable Block

IN6989.250 – Cable ∅ – 6 mm
IN6989.322 – Cable ∅ – 8 mm
IN6989.375 – Cable ∅ – 9.5 mm
IN9417.750 – Cable ∅ – 19 mm
IN11118.680 – Cable ∅ – 17 mm
IN11118.563 – Cable ∅ – 17 mm

 

LIGHT ENOUGH TO ALIGN TO THE LOAD

Harken Oceanic cable blocks are used on research vessels to safely lead data cables and towed objects overboard. At only 19.3 kg (42.5 lb), the 500 mm (19.7″) sheave diameter block is light enough to align to the load, optimizing cable tracking.

Oceanographic research
The Oceanic cable block is used by Woods Hole Oceanographic Institute, University of Rhode Island (USA), and University of Alaska – Fairbanks oceanographic research departments, as well as many other research organizations.

Maintenance is easy
Flushing the block with fresh water after use will keep the dry-running bearings free rolling. If further maintenance is required, one hex wrench is all you need for disassembly. All the bearings are captive, so no need to worry about losing parts.

Oceanic block durability

Durability
Sideplates are constructed of hardcoat-anodized 6061-T6 aluminum for strength, durability, and corrosion resistance. They are PTFE-coated for a smooth surface.

Oceanic block bearings

Bearings
Delrin® roller bearings are housed in a center cage to keep them parallel for low-friction efficiency. The large diameter bearing cage reduces friction and spreads the load. Captive Torlon® ball bearings handle sideloads.


Oceanic block large diameter sheave

Large diameter sheave 
The block’s open center helps move the center of gravity toward the shackle, improving the block’s ability to align with the load. The sheave’s groove detailing can be designed to suit specific data cable diameters.

Oceanic block Design

Design

The block’s wide throat allows passage of data cable terminals. The sheave’s durable, lightweight Nylatron® material has high mechanical stiffness, resists static electricity, and has excellent wear resistance. Plastic isolators and helicoils are used to minimize corrosion between aluminum and stainless steel. The Oceanic cable block is UNOLS
compliant.

Oceanic block options

Options
The block is designed to work with an optional magnetic Hall effect sensor.

 

 

SPECIFICATIONS

Block

Sheave

Weight

Cheek Gap

Cable

Max rated load

in

mm

lb

kg

in

mm

in

mm

kN

lbs

IN6989.250

20

500

43

19

2.25

57

0.250

6

84.49

19,000

IN6989.322

20

500

43

19

2.25

57

0.322

8

84.49

19,000

IN6989.375

20

500

43

19

2.25

57

0.375

9.5

84.49

19,000

IN9417.750

29.52

750

150

68

4

101.6

0.750

19

175.66

39,500

IN11118.680

30.5

775

233

105.68

4

101.6

0.680

17

355

80,000

IN11118.563

30.5

775

233

105.68

4

101.6

0.563

17

355

80,000

 

Oceanic cable block case study

 

Nylatron is a registered trademark of the Quadrant Group.
Delrin is a registered trademark of E.I duPont de Nemours and company or its affiliates.
Torlon is a registered trademark of Solvay Advanced Polymers.

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