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Dredging Grab

Dredging Grab
Dredging Grab Quality Advantage

Description:

For underwater operations, we provide dredging grabs (digging grabs) for maintenance dredging such as mud or silt, and special grabs for digging operations like clay and hard ground layers.
The grabs are available in two and four rope version.
Digging grabs can be used for:
Bulk cargo handling (e.g. loading/unloading ships)
Salvage (e.g. ship-wrecks)
1. Smooth Scales of Dredging Grab
The inner side of the scales is smooth, without any abrupt transitions. This minimizes the resistance during the digging in to the bottom and also makes it easier to unload sticky materials, like clay and mud. 2. Different Types of Cutting Edges
The digging grab’s bottom lips are available with contact lips without teeth. For hard layers and materials that are difficult to penetrate, we suggest lips with teeth. There are bottom lips with removable or exchangeable teeth and lips with permanent teeth (cut from the bottom lips).
Permanent teeth (cut into the bottom lips) are very suitable for extreme hard layers.

Feature:

1. Digging grabs are able to handle both sludge and objects, such as stone blocks, bricks, wrecks.
2. They are suitable for clearing material from waters which are difficult to access, such as city canals.
3. They can also be used for gravel mining and maintenance dredging on uneven beds.
4. We can design difference underwater dredging grab according to the client request

Product Outline:

Technical Parameter:

Model Volume (m3) Grab Materials Dead Weight
(t) 		Dimension (mm) Pulley Diameter (mm) Pulley Ratio Lifting Capacity (t)
A B C D E
BS6SJ[1]4A 1 (00) Silt 4 2380 3458 3533 4083 1320 Ø560 5 6
BS12SJ[1.5]6.5A 1.5 (00) Stiff Mud 6.5 3020 4039 3772 4532 1500 Ø560 5 12
BS20SJ[5]8A 5 (300) Silt 8 3260 5042 4502 5280 1820 Ø650 4 20
BS30SJ[5]13B 5 (150) Stiff Mud 13 3740 5450 4942 5916 2012 Ø800 5 30
BS55[5.5]35BSJ 5.5 (00) Rock 35 3960 5812 5614 6565 2150 Ø880 6 55
CS45SJ[4]25AV 4 (250) Rock 25 3840 5657 5748 6715 1950 Ø880 6 45
CS46SJ[5]36BV 5 (250) Rock 36 3600 5947 6164 7125 1940 Ø880 6 45
CS45SJ[8]28AV 8 (250) Stiff Mud 28 4040 6632 6494 7364 2102 Ø880 6 45
CS55SJ[5]32B 5 (250) Rock 32 3960 5734 7194 8167 1940 Ø880 5 55
CS70SJ[16]48AV 16 (250) Silt 48 5130 7712 7415 8724 2954 Ø1045 6 70
CS80[8]60AV 8 (250) Rock 60 4130 6695 7189 7753 2530 Ø1045 7 80
CS80SJ[11]55BV 11 (250) Stiff Mud 55 5120 7780 7553 8924 2420 Ø1045 7 55
CS200SJ[9]110BV 9 (250) Salvage 110 5465 7202 8666 10264 3000 Ø1500 7 110

Typical Cases:

1. Nantong Tongzhou Port Company
2. Hong Kong Ming Hah Shipping Co., Ltd
3. Philippine Shipping Company


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