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I N S T R U C T I O N S

29 mm Carbo AirBlock

®

All blocks except 351 Ti-Lite

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.

Part 

No. Description

A

B

C

Maximum 

working load

Breaking 

load

 Harken 

Shackle  

Part No.

in mm

in

mm

in

mm

lb

kg

lb

kg

340

Single/swivel

1

1

/

8

29

2

5

/

8

66

5

/

32

4

330

150

1000

454

246

341

Single/swivel/becket

1

1

/

8

29 3

1

/

16

78

5

/

32

4

330

150

1000

454

246

342

Double/swivel

1

1

/

8

29

2

7

/

8

73

3

/

16

5

660

299

1625

737

072

343

Double/swivel/becket

1

1

/

8

29

3

3

/

8

85

3

/

16

5

660

299

1625

737

072

344

Triple/swivel

1

1

/

8

29

2

7

/

8

73

3

/

16

5

990

449

2000

907

072

345

Triple/swivel/becket

1

1

/

8

29

3

3

/

8

85

3

/

16

5

990

449

2000

907

072

346

Triple/423 Carbo-Cam

®

**

1

1

/

8

29

2

7

/

8

73

3

/

16

5

750

340

1500

680

072

347

Triple/423 Carbo-Cam

®

/becket**

1

1

/

8

29

3

3

/

8

85

3

/

16

5

900

408

1800

816

072

348

Single/fixed*

1

1

/

8

29 1

15

/

16

49

330

150

1000

454

349

Stand-up/fixed*

1

1

/

8

29 2

3

/

16

56

330

150

1000

454

350

Cheek

1

1

/

8

29

2

1/8

53

330

150

1000

454

351

Ti-Lite*

Important:

 Consult instruction sheet at: 

http://www.harken.com/pdf/4927.pdf

 

352

90° Fixed head*

1

1

/

8

29 2

1

/

16

52

330

150

1000

454

353

Traveler

1

1

/

8

29

3

5

/

8

92

330

150

1000

454

371

Clew block assembly

1

1

/

8

29

4

7

/

8

124

330

150

1000

454

381

Double/fixed

1

1

/

8

29

2

1

/

8

54

660

299

1625

737

*Can be used as becket block     **Maximum working loads and breaking loads for blocks based on cam strengths

A

B

C

Glass-filled nylon sideplates:

 load-carrying curved bearing races.

Single fixed:

 Integral becket allows 2:1 or 3:1 purchase.

Doubles/triples:

 U-Locks holds the swivel in front/side position, or lets 

block spin freely. 

Triple w/cam:

 Compact cam arm supports high-load purchases of 5:1 or 6:1.

Cheek:

 Line-shedding, small mounting footprint and drain holes.

Common uses: 

Outhauls, Cunninghams, Vangs, Traveler controls,  

Barberhaulers, Flag halyards

Max Line Size:

 Blocks w/o Cams 5/16" (8 mm); Blocks w/Cams 1/4" (6 mm)

Do not apply a load greater than the Maximum working load (MWL) of the Carbo AirBlock listed below. 

Features

IMPORTANT: See Inspection and Maintenance at end of manual.

USA

 

 

Tel:

 (+1) 262-691-3320 • 

Web:

 www.harken.com • 

Email:

 [email protected] 

Italy

 

 

Tel:

 (+39) 031.3523511 • 

Web:

 www.harken.it • 

Email:

 [email protected]

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