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57 mm Cheek Ratchamatic® Block 57 mm Cheek Ratchamatic® Block 57 mm Cheek Ratchamatic® Block
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57 mm Cheek Ratchamatic® Block

Part No. 2633
$105.45  In Stock
Sheave Ø (mm)57 mm
Sheave Ø (in)2 1/4 in
Maximum line Ø (mm)10 mm
Maximum line Ø (in) 3/8 in
Maximum working load (kg)227 kg
Maximum working load (lb)500 lb

The Carbo Ratchamatic® is a load-sensing ratchet block that rolls freely in both directions under low loads and automatically engages the ratchet as loads increase. Shifting between ratchet and light-air modes is seamless.

Sheave Ø (mm)57 mm
Sheave Ø (in)2 1/4 in
Length (mm)83 mm
Length (in)3 1/4 in
Weight (g)89 g
Weight (oz)3.1 oz
Maximum line Ø (mm)10 mm
Maximum line Ø (in) 3/8 in
Fasteners (mm)M4 mm
Maximum working load (kg)227 kg
Maximum working load (lb)500 lb
Breaking load (kg)907 kg
Breaking load (lb)2000 lb
Holding power w/180 degree wrap 50 lb (23 kg) 10:1 
FootnoteIncludes fasteners and mounting pad. 
DWG: 2633.dwg (open/save)
DXF: 2633.dxf (open/save)
IGS: 2633.igs (open/save)
EPS: 2633.eps (open/save)
High-res JPG: 2633.jpg (open/save)

DO NOT use Harken equipment for human suspension unless product is specifically certified and labeled for such use.

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