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Harken Ratchet Blocks

Harken

Carbo ratchet blocks allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing.

Nylon resin sideplates are densely packed with long-glass fibers for a compact block with a high strength-to-weight ratio. Machined aluminum sheaves are hardcoat anodized for strength and corrosion resistance. Eight facets hold line securely. Ball bearings, sheave, and sideplates are UV-stabilized with carbon black for maximum protection.

40 mm:
The 40 mm ratchets are ideal for jib sheets and spinnakers where size and weight are critical. The 2608, 2609, and 2614 have on/off switches; other 40 mm ratchets are always in ratchet mode.

57 mm & 75 mm:
The 57 mm and 75 mm switchable ratchets provide precise on/off control with accessible, easy-to-operate on/off switches on both sides of the block.

For the ultimate system, mount a switchable ratchet in the cockpit and a boom-mounted Ratchamatic® block directly above for double holding power in heavy air and a free-running mainsheet when it's light. The 75 mm provides up to 15:1 holding power; the 57 mm 10:1.

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Ratchet Blocks (Imperial)
Code Part No. Description Sheave Dia.
(in)
Length
(in)
Weight
(oz)
Shackle pin Dia.
(in)
Max Line Dia.
(in)
Maximum Working Load
(lb)
Breaking Load
(lb)
40 mm
HAR2608 2608 Single/swivel 1 9/16 3 3/8 1.7 5/32 3/8 300 1000
HAR2609 2609 Single/swivel/becket 1 9/16 4 1.8 5/32 3/8 300 1000
HAR2610 2610 Single/swivel/471 Carbo-Cam** 1 9/16 3/38 4.6 5/32 1/4 150 300
HAR2611 2611 Single/swivel/471 Carbo-Cam/becket** 1 9/16 4.7 5/32 1/4 300 600
HAR2614 2614 Cheek* 1 9/16 2 3/4 1.6   3/8 300 1000
HAR2612 2612 Triple/swivel/471 Carbo-Cam* 1 9/16 3 11/16 8.5 1/4 3/16 750 1500
HAR2613 2613 Triple/swivel/471 Carbo-Cam/becket* 1 9/16 4 5/16 8.6 1/4 3/16 900 1800
HAR2619 2619 Triple/471 Carbo-Cam/29 mm block/becket* 1 9/16 4 3/4 9.5 1/4 3/16 900 1800
57 mm
HAR2135 2135 Single/swivel 2 1/4 4 1/16 3 3/16 3/8 500 2000
HAR2136 2136 Single/swivel/becket 2 1/4 4 15/16 3.3 3/16 3/8 500 2000
HAR2137 2137 Cheek* 2 1/4 3 1/4 2.5   3/8 500 2000
HAR2138 2138 Single/swivel/150 Cam-Matic** 2 1/4 4 1/16 8.7 3/16 3/8 300 750
HAR2139 2139 Single/swivel/150 Cam-Matic/becket** 2 1/4 4 15/16 9 3/16 3/8 600 1500
HAR2140 2140 Triple/swivel/150 Cam-Matic* 2 1/4 4 1/16 15.4 1/4 3/8 1500 3750
HAR2141 2141 Triple/swivel/150 Cam-Matic/becket* 2 1/4 4 15/16 15.7 1/4 3/8 1800 4500
75 mm
HAR2670 2670 Single/swivel 2 15/16 5 3/8 8 1/4 7/16 750 3000
HAR2671 2671 Single/swivel/becket 2 15/16 6 1/2 8.75 1/4 7/16 750 3000
HAR2672 2672 Cheek* 2 15/16 4 1/16 6.3   7/16 750 3000
*Maximum working loads for blocks based on cam strenghts.

Ratchet Blocks (Metric)
Code Part No. Description Sheave Dia.
(mm)
Length
(mm)
Weight
(g)
Shackle pin Dia.
(mm)
Max Line Dia.
(mm)
Maximum Working Load
(kg)
Breaking Load
(kg)
40 mm
HAR2608 2608 Single/swivel 40 86 49 4 10 136 454
HAR2609 2609 Single/swivel/becket 40 102 52 4 10 136 454
HAR2610 2610 Single/swivel/471 Carbo-Cam** 40 86 129 4 6 68 136
HAR2611 2611 Single/swivel/471 Carbo-Cam/becket** 40 102 132 4 6 136 272
HAR2614 2614 Cheek* 40 70 44   10 136 454
HAR2612 2612 Triple/swivel/471 Carbo-Cam* 40 94 242 6 5 340 680
HAR2613 2613 Triple/swivel/471 Carbo-Cam/becket* 40 110 245 6 5 408 816
HAR2619 2619 Triple/471 Carbo-Cam/29 mm block/becket* 40 121 269 6 5 408 816
57 mm
HAR2135 2135 Single/swivel 57 103 85 5 10 227 907
HAR2136 2136 Single/swivel/becket 57 125 94 5 10 227 907
HAR2137 2137 Cheek* 57 83 71   10 227 907
HAR2138 2138 Single/swivel/150 Cam-Matic** 57 103 247 5 10 136 340
HAR2139 2139 Single/swivel/150 Cam-Matic/becket** 57 125 255 5 10 227 680
HAR2140 2140 Triple/swivel/150 Cam-Matic* 57 103 435 6 10 680 1700
HAR2141 2141 Triple/swivel/150 Cam-Matic/becket* 57 125 445 6 10 816 2041
75 mm
HAR2670 2670 Single/swivel 75 137 227 6 12 341 1361
HAR2671 2671 Single/swivel/becket 75 165 248 6 12 341 1361
HAR2672 2672 Cheek* 75 103 179   12 341 1361
*Maximum working loads for blocks based on cam strenghts.

Harken Ratchet Blocks

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