Rating of the best grabs for excavators for 2022

A grab is a device for various types of cranes, the main part of which is the jaws for grasping the load. The jaws can be made in the form of buckets - when handling bulk materials, or in the form of separate “fangs” - when handling round timber and scrap metal. Grabs are used for loading and unloading and transporting various types of cargo over short distances.

When using a grab, the process of loading and unloading scrap, timber, and bulk materials is automated.

Rigid suspension loaders

Such units are used for scooping material in large volumes. Used for unloading the holds of ships and wagons.

This grab is installed on a hook cage with a single-drum winch. The design of the unit has an upper head (a drive is installed in it) and jaws secured with hinges. The drive can be of different types:

• Lever.
• Hydraulic.

The mechanism for closing the jaws in such units is built into the design of the grab and is installed on a traverse or lever-screw system. An electrical cable is required to power the drive mechanism. In some models, the closing drive is located on the upper crossbar. With such grabs, the center of gravity is shifted slightly upward. Among the advantages of using loaders with rigid suspension, it is worth noting the compact design, as well as the lifting height. Among the disadvantages is the instability of the grab when scooping material from a slope. In this case, the center of gravity of the device shifts significantly.

We also note that multi-jaw grab loaders are also used in production. They have four to eight load gripping devices. Typically, such devices are used for difficult-to-scoop material. The loader's jaws are crescent-shaped and are attached to the lower cylindrical crossbar by means of hinges. The working angle of the paws ranges from 45 to 120 degrees. By the way, multi-jaw grabs are also used for loading timber. However, to prevent the paws from damaging the tree trunk, they have a flatter shape.

Operating rules

On the side chains, a hand grab is lowered into the well to the very bottom. At the same time, his “jaws” are opened to the maximum. When it reaches the bottom (this can be felt by the weakening of the chain tension), it is lifted by the central chain or cable, and the bowls automatically close under their own weight, scooping up the silt.

To pull the structure out, significant force is required. After being lifted, it is emptied and lowered into the well again - until the bitter end.

Related video: How to make a grab with your own hands

Grab bucket

The grab bucket is suspended from the crane cross-beam, which consists of a parallelogram hinge mechanism, and can be rotated 180 around its axis using a special hydraulic cylinder. This design of the bucket suspension makes it possible to relieve it from lateral forces from the crane boom.  

The grab bucket in these cranes is suspended from a trolley that moves along the lower chord of the bridge truss.  

A grab bucket usually consists of two doors, the cutting edges of which are reinforced with strips of high-strength steel. The bucket is dropped onto the ground vertically in the open state, while the sharpened cutting edges of the bucket cut into the ground. When the closing cable is pulled, the jaws come together and the bucket is filled with soil. After this, the bucket is lifted up by a lifting rope. By rotating the upper platform of the excavator, the bucket is positioned above the unloading area; When the closing cable is loosened, the bucket opens and unloads.  

Grab buckets are elongated and heavy.  

A conventional grab bucket consists of two doors, the cutting edges of which are reinforced with strips of high-strength steel.  

Using a grab bucket, the waste is reloaded into a feeder hopper, which has a bottom in the form of an endless belt with metal plates 2040 mm wide. Next, the waste is sent to an inclined conveyor, where large inclusions are selected. An SE-1 suspended belt magnetic separator is installed above the conveyor belt to extract ferrous metal, which is sent to a hydraulic baling press. The resulting bags measuring 100X400X300 mm are sent for recycling. Pressing time for one package is 2 minutes.  

The connection between the grab bucket and the handle can be non-rotating, part-rotating and full-rotating.  

The operation of a self-cleaning grab bucket does not differ from an industrial one and when the jaws are turned to the upper position, the scrapers 5, remaining motionless, clean the front and side walls of adhered material.  

When using a grab bucket, the latter is lowered with its jaws onto the surface of the stack and is filled with the jaws gradually closing and the bucket turning towards itself. After lifting and moving the bucket to the body of the vehicle, the jaws open or tilt forward in a closed state, the material is unloaded.  

Excavators with a clamshell bucket (Fig. 40, d) have a lattice boom and a jaw bucket suspended on a lifting steel rope. With the help of a system of blocks, when the traction rope is tensioned, the jaws of the bucket converge and grab the soil. They are used to develop deep trenches, pits and shafts.  

The accumulated sediment is unloaded with a grab bucket mounted on a gantry crane. Observations have established that the duration of operation of the filter layer between overloads is 3–8 months. This is a disadvantage of the sump, as it complicates its operation.  

When working with a clamshell bucket, you should expect different optimal ratios between the width and depth of immersion, since the influence of the bottom is affected.  

Design features of the device

Diagram of the grab device.

The operating principle and structure of a manual grab are no different from a conventional device. The main difference is only in size and weight: a hand bucket will be smaller and lighter. The device consists of the following elements:

• “jaws” - two movably connected buckets equipped with teeth for better soil grip;
• video clip;
• cable;
• fixing ring;
• kernel;
• springs.

Conventional grabs are mounted on an excavator lifting device or on a crane installation. In the case of a manual device, it can be mounted on a block or well lifting mechanism.

The device may consist of two or four buckets. For use on the site, a grab made of two buckets is more suitable, since it is easier to use and manufacture. The buckets are connected by the central part by levers on an oblong hinge. The hinge support and the edges of the grab are suspended on a chain.

The main advantage of a manual grab is the safety of repairs. The standard cleaning method requires the efforts of two people. One person will have to go down into the well column and fill a bucket, which will be lifted to the surface by the second person. In this case, a fairly heavy bucket filled with silt ends up above the head of a person standing in the well.

In addition, the grab allows you to simplify the procedure itself. The greater the depth of the well, the larger the ladder needed to go down. When using this device, there is no need to clean the bottom of the well with someone else. The work itself can be handled alone.

When using a hand grab there is no need to carry out such a dangerous operation. The only drawback is that due to the low power of the design, the grab can hardly be used for other work, and most of the time the device will be idle.

Description[ | code]

Bridge material handler with double jaw rope grab

The device is a device consisting of a large iron scoop attached to a load-lifting crane and used to grab and unload material lifted by the crane - sand, earth, rocks, scrap metals.

Grabs are also working equipment for mechanical and hydraulic excavators and are used in the development of soils below and above the parking level, as well as some other types of work - digging deep pits, cleaning ponds and canals.

Options | code

The value of the crane's lifting capacity (indicated by “ Q

“), equipped with a grab, the weights of the load and the grab are included. The scooping ability of the grab depends on the ratio of these masses. In this regard, bulk cargo handled by a grab is divided according to bulk density into the following groups:

The lifting capacity of a grab is determined by weighing the material after a test scooping performed by the owner of the grab before using it for handling cargo of a given type (brand, grade). Test scooping is carried out from the horizontal surface of freshly poured soil. The grab ropes must be protected from chafing by the material grabbed by the grab.

The grab blocks are positioned and constructed in such a way as to prevent spontaneous opening and loss of ropes from the groove of the block.

MTZ-based grab loader - what is it and where is it used?

These devices are installed on tractors as attachments.

With the help of a rotating boom, materials can be loaded in any position of the loader.

Grab loaders based on MTZ tractors are produced by several factories and enterprises, the main manufacturer is the Yurga Agricultural Equipment Plant "Yurmash".

The main number of grab devices are installed on the base of agricultural models of tractors MTZ-80 and MTZ-82.1, using the resources and performance of the Minsk “Belarus”.

MTZ tractors are distinguished by all-season operation and reliable mechanisms. Their high off-road capability is successfully combined with the ability to move on roads in general traffic.

Loaders are most widespread in agriculture.

Inexpensive and accessible spare parts are complemented by the versatility of using special equipment:

• loading sand, gravel, snow, construction and other waste and other materials into vehicles;
• excavation work (moving, laying and excavating soil), cleaning the area at a level that may be above or below the level of the car parking;
• digging large and deep (up to 2.5 m) pits with excavation of soil and stone;
• lifting, moving and reloading hay, silage, straw, peat and fertilizers;
• lifting long and oversized objects (timber);
• cleaning of shallow bodies of water (lakes, ponds). Features of the loader and its design

The most popular grab loader at MTZ is the PE-F-1BM; several modifications have been created on its basis.

The main advantages of the grab installation at MTZ:

• multifunctionality;
• favorable price-quality ratio;
• loading capacity = 120 t/hour;
• aggregation (arrangement) of a loader with tractors and trailers, which expands their scope of application;
• Possibility of operation in all weather conditions;
• maintainability and low cost of maintenance of the grab installation.

The grab is used for lifting, reloading and transport work with various materials or piece cargo up to 1 ton.

Basic equipment - grab bucket and bulldozer blade (straight type, width = 2 m).

Full set - plus forks (claws), volume = 0.56 m³ for hay, silage and backhoe (volume = 0.27 m³), ​​reinforced high-strength grab, volume = 0.3 m³. As additional options, a hook with a capacity of 1 ton and a drill can be installed.

DIY grab bucket

Since the sludge grab bucket is not a very complicated mechanism, you can make it yourself. To do this, below is a drawing of a grab for cleaning a well and detailed manufacturing instructions.

Drawing of the device

General view and list of parts of the clamshell bucket
General view and list of parts of the clamshell bucket:

1 – grab jaw; 2 – roller for rope (cable); 3 – roller finger; 4 – rope; 5.7 – M8 bolt (6 pcs. in total); 6 – thrust (4 pcs.); 8 – eye for connecting rods and crossbars; 9 – traverse; 10 – bucket retaining ring; 11 – latch rod; 12 – spring mechanism; 13 – eye for rope

Manufacturing instructions

1. According to the dimensions indicated below, 4 semicircular sidewalls with eyes are cut out of a 2 mm thick steel sheet, in which holes are drilled. Next, two plates (half-bottoms) with teeth on one side are cut out. The height and pitch of the teeth is 20-25 mm. These plates are given a semicircular shape in accordance with the radius of the sidewalls, after which two sidewalls are welded to each of them.

Sidewalls and half-bottoms of a well grab

1. Two half-buckets are connected to each other using a steel roller 202 mm long, 70 mm in diameter and a hole through the entire length into which a finger is inserted.

Roller for connecting the jaws and moving the cable

Roller finger

1. To make rods, you need to take a steel bar 5-6 mm thick, cut it into 4 parts (according to size) and drill holes.

Bucket link

1. The traverse is made from a profile pipe, and scrap metal from previous operations can be used for the eyes. A latch rod is installed on the traverse, to which an additional 500 mm long cable with a trigger ring will subsequently be connected, designed to fix the bucket in the open position.

Crossbar with latch rod

1. The lowering/raising of the grab during well cleaning is carried out with a steel cable, chain or strong rope, the length of which is selected in accordance with the depth of the well. One end of the cable is attached to an eye located on the traverse, and the other is led out through the bucket roller and a hole in the same traverse.

Modifications and their technical characteristics

• PEF-1BM(R) - the loader boom is equipped with a rotator;
• PE-F-1BM-100 - the gearbox with NSh-32 pumps is replaced with the NSh-100 pump;
• PE-F-1BM(U) - a loader with a reinforced column - the diameter of its base is 4 cm larger than that of a conventional one;
• PEF-1BM(T) - equipped with a telescopic extension, which increases the boom reach by 1 m;
• PE-F-1BM-1—the model is equipped with Italian hydraulics. The working life of the equipment increases, control with the help of 3 cable joysticks is performed more smoothly, without jerking.

Italian hydraulics:

• single-acting hydraulic locks on the jack's hydraulic cylinders;
• hydraulic lock of the boom hydraulic cylinder;
• damper on the rotation hydraulic cylinder, pressure adjustment 127 kg/cm²;
• adjustable throttle with check valve - to adjust the flow of working fluid in one direction (boom lowering cavity), in the opposite direction the flow is free (to adjust the lowering of the boom without jerking);
• oil drain filter (hydraulic, fine filter = 10 microns);
• filler neck with an air filter and a non-removable mesh for oil purification;
• oil level indicator with thermometer in the tank;
• pressure gauge

The PE1M-03 loader is equipped with a remote control; it can be controlled by an operator outside the cabin, improving control over the work and its adjustment.

Loader models PE1M-04, 05 and 06 are installed on the MTZ-92P production tractor.

This model has a more powerful engine (84 hp), the machine has a special layout designed for mounting loaders and excavators.

All 3 loader models have different boom extensions. The driver's seat rotates for better visibility, and the instrument panel provides space for loader control joysticks.

Classifications of grabs by jaw type

As mentioned above, the gripping elements of the grab are called jaws

.
Their number varies from two to eight. The shape of the jaws largely determines what loads the gripper can handle. Bucket grabs
are often used for digging and mining.
In order to improve scooping characteristics, the cutting edges of the bucket are supplemented with pointed teeth. Pincer grips
are convenient for loading round timber, pipes and other cylindrical objects of oblong shape.
Fork grabs
are used as agricultural equipment. They are indispensable for high-performance loading of hay, straw, silage and other fibrous materials, both in roll and loose form.

Bulk, small-piece and prone to spillage (leakage) cargo are reloaded using a closed

or
semi-closed
grab bucket.
Other types of cargo are handled by open grabs
, the blades of which do not form a continuous surface when closed.

Separately, it is worth paying attention to the trajectory of movement of the jaw grip. In digging devices, the jaws close along a “digging” trajectory, thereby allowing deeper penetration into the developed soil.

Blades moving along a raking path, on the contrary, should not crash into the material. Their main task is to rake up bulk and small-piece cargo lying layer by layer on the surface. Hence their purpose is completely different - loading.

When carrying out work in a confined space, for example, when digging a well or a borehole, such a parameter as the maximum span of the grab jaws is important. The smaller the overall span width, the better. Ideally, the sweep width should match the digging width. Today, there are grab models with a fixed span width.

, ensured thanks to the kinematic pattern of movement of the jaws along fixed guides.

When digging and loading rocks of heterogeneous hardness, grabs with independent jaw closure

. The classic option, when the design of the drive involves the simultaneous uniform closing of all jaws, fails in this case. If one of the jaws encounters resistance on its way during closure and stops, then this blocks the work of the others. Independent (alternate) jaw alignment solves the problem. This is realized by integrating spring mechanisms into the thrust of each jaw, leading to the redistribution of forces on the grab elements in order to grasp the load more tightly.

There are grab grips with individual drive

each jaw. A separate actuator for each “claw” allows you to significantly increase its power. Moreover, this solves the problem of uneven closure described above.

The rotation of the grab around its axis is carried out due to a rotary installation

. Equipping the lifting and loading mechanism with a rotator allows you to grab loads from any position, which is especially important when lifting containers and containers that have strictly defined gripping points.

Instead of an epilogue

The market analysis shows that this segment is quite saturated with various models and allows you to make a reasonable choice. If we focus on foreign brands, then the secondary market is more filled with them. Russian brands occupy an average position in the primary market, but only due to their reduced prices. In any case, the choice between used and new equipment should be made based on current tasks and the expected duration of use of the device. It is worth noting that it is completely impossible to navigate prices by monitoring online sites for new models - you can find out the price for new copies only by requesting it directly from the dealer or manufacturer. In turn, the search for the required model on the secondary market is extremely limited; as a rule, it is not possible to assemble a grab grab completely “for yourself” and you have to search for a long time for the required equipment in a ready-made version.

Grab loader based on T 16 - differences and technical parameters

The basic model T-16 was produced by the Kharkov Tractor Plant in 1961-1967.

Later the car was modified and was produced in an improved form until 1996.

Advantages of the HTZ chassis:

1. Long service life.
2. Low price.
3. The tractor weighs 1685 - 1810 kg - it does not compact the top layers of soil.
4. It has 2 pairs of wheels of different sizes - smaller front ones and larger rear ones; using the locking mechanism, you can change the track width for both pairs.
5. The T-16 chassis has a rear-mounted engine and can be mounted with virtually any front-mounted equipment. There are seats for attachments at the front.
6. Tractor engine 25 hp - air-cooled.

The T-16 grab loader cannot be used at temperatures below -20°C, as the hydraulic cylinders freeze.

Disadvantages of the T-16: low productivity and the need for regular cleaning of the air valves and centrifuge.

Why and how often should you clean your well?

A reliable well house, of course, significantly limits the entry of debris into the well, but even it cannot completely protect the water from contamination. Fallen leaves and branches, not to mention dead animals and birds, cause significant deterioration in water quality as a result of the decomposition process. The rate of siltation also depends on the characteristics of the aquifer. In soft clay soil, silt forms noticeably faster than in hard rock. This slows down the flow of water and, accordingly, reduces the flow rate of the source.

Neglect of cleaning procedures can lead to the complete loss of the well as a source of drinking water

Experts recommend clearing the bottom of silt at least once every five years. However, in some cases, cleaning the well using a grab or other device may be necessary earlier, which is facilitated by the following symptoms:

• significant turbidity of the water as a result of a violation of the tightness of the seams or poor performance of the filter layer;
• the appearance of clay deposits at the bottom due to the ingress of surface runoff;
• significant reduction in source flow;
• a noticeable increase in the bottom level;
• deterioration in the taste characteristics of water.

If any of these symptoms have been noticed, or cleaning measures have not been carried out for more than five years, then it is better not to put off cleaning for a long time and carry it out as soon as possible. Especially if you regularly use water from a well for drinking and cooking.

Signs that your well needs cleaning

The well must be cleaned if the water characteristics have deteriorated and the following has appeared:

1. Turbidity. Often occurs due to a violation of the tightness of joints in the walls or a clogged bottom filter.
2. Unpleasant taste - sweetish, metallic or earthy, moldy.
3. Color or shade. Black is a sign of decomposition of organic matter, green is a sign of algae, yellowish-red is the presence of a large amount of iron.

Other signs indicating source contamination:

• there is debris floating on the surface, flakes or an oily film has appeared;
• clay deposits on the walls of the mine;
• damage to the joints of the rings is visible;
• The water level has dropped significantly.

If the well neck is not closed securely, leaves, dirt, and small animals (frogs, slugs, etc.) will fall into it. Fine sand is carried by underground streams from the depths, and if the source is located on quicksand, the level of sand reaches the level of quicksand.

Loading capacity of grabs

The grapple is most often used as an attachment in excavators and cranes with mechanical or hydraulic drive. The main parameter characterizing its operation is its load capacity. Its scooping ability depends on the ratio of the mass of the load and the bucket itself. Therefore, all materials that are moved using a grab bucket are divided into several groups according to their bulk density.

The carrying capacity of the working equipment is determined immediately before the start of work by trial scooping. It is produced from a horizontal platform on which freshly poured soil or material is placed. The seized cargo is poured onto a special surface and weighed. During work, ropes and pulleys must be protected from caught material.

Main characteristics affecting the cost of the grab

The cost of the described attachments for an excavator consists of many parameters:

• Capacity in cubic meters;
• Maximum load capacity;
• Dimensions in open and closed state;
• Weight of the device without load;
• Type of drive used;
• Number of jaws at the gripper;
• Type of cargo for which the grab can be used;
• Possible material density (for digging);
• Drive power (for those equipped with a motor);
• Number of ropes (for ropeways).

Thus, it is possible to give specific prices only by selecting specific parameters, and their choice will depend on the area in which the equipment will need to be used.

Excavators[ | code]

Rope grabs | code

On mechanical cable excavators, both double-jaw grabs and grabs with a large number of jaws are used - the number and shape of the jaws depend on the type of material being handled. However, the basic diagram of their operation does not differ from the diagram of a double-jaw grab.

Description | code

For a grab used on a mechanical excavator, a dragline lattice boom is used. Three types of grabs are produced for excavators: light, medium and heavy. In this case, the mass of the grab used should be greater, the denser the soil. However, the heavier the grab, the less soil it can lift for a given equipment stability, which affects its productivity.

Device | code

To prevent twisting of the ropes and significant swinging of the grab when turning the platform, a pull-out device called a damper is used. The damper acts on the bucket with a pull rope. A constant rope tension, independent of the position of the grab, is created by the weight of the load moving inside the boom along the guides, to which the rope bending around the blocks is attached. Some excavators use a friction mechanism for opening the bottom of the bucket, on the drum of which a rope is attached.

Advantages and disadvantages | code

The disadvantage of the rope grab is the inability to develop dense soils: the load from the mass of the grab is not enough to crash into the ground.

Hydraulic grabs | code

On hydraulically driven excavators, special rigidly suspended grabs are installed, which are attached to the handle instead of a bucket.

Advantages and disadvantages | code

The main advantage is the ability to create the necessary pressure when cutting into the ground and, regardless of its mass, to develop dense soils.

What is a well cleaning grab?

The full cycle of operation of a 1-rope device (excavator) takes place in stages. The first stage is lowering: the winch of the lifting device functions for lowering. The excavator with its jaws fully open is lowered onto the working surface until it stops.

You can either make a grab yourself or buy a ready-made one

Often the bucket is not simply lowered, but almost “thrown”, which contributes to deeper penetration of the jaws into the ground. This technique makes it possible to remove dense material better.

The next stage is the capture: the lock snaps into place, the winch rises, which leads to a neat closure of the jaws, and the load is grabbed. Lifting - when the jaws are finally closed, the lifting winch drum continues to wind the cable, which leads to the separation of the grab bucket from the surface and its subsequent lifting to the required height.

Unloading occurs according to the following algorithm:

• The bucket sent to the unloading site is lowered to the surface.
• This leads to the opening of the locking mechanism.
• A further rise provokes its opening.
• The bucket is emptied, and you can continue working - loading and unloading material.

The main disadvantage inherent in the 1-rope device is that the locking mechanism is unlocked after the bucket is completely lowered when it touches the surface. This reduces the efficiency of the cleaning process. A special unloading cable helps to avoid this, which forcibly removes the locking mechanism block, regardless of the height at which the bucket is located. This technical solution speeds up the unloading procedure significantly, but leads to a very loud impact of the head on the top of the traverse at the moment the gripper opens. In order to prevent loosening of the grab, stabilizer cables are used.

Description of grab excavator

The machine on which the grab bucket is mounted is used for the following types of work:

1. Underwater mining of minerals and building materials.
2. Extraction of gravel and sand.
3. Extraction of ore and gravel from the bottom of reservoirs.
4. Digging wells.
5. Drilling of the wells.

Excavators with clamshell buckets are special lifting and digging mechanisms. A grab is hung on a hook or boom and is used in various areas. The bucket consists of 2 jaws that close together, making it possible to work at great depths.

may have different types of structures, which depend on the type of cargo being moved. For bulk materials, a grab is used with blades that resemble a closed bucket. Grabs for timber and pipes have pincer-shaped jaws. This excavator-grab allows you to move oblong objects. Tentacle grippers are used to capture and carry dense large pieces of cargo (household waste, scrap metal, pipes).

The machines are controlled according to the following scheme:

• First the excavator moves.
• Then various manipulations with the jaws are carried out.

There are 2 types of control systems installed on an excavator - drive (motor) and rope.

Rating of the best grabs for excavators for 2022

Forestry hydraulic grab ARBOR 4-0

Currently, this grip is the flagship among models from the German company. Specially designed for loading/unloading round timber. The body and blades are made of high wear resistance steel WHD-450. It easily copes with the movement of logs with a diameter of 220 mm, without causing them serious damage. After turning off the engine, the blades will still hold the load for half an hour. The purpose of the grab can be easily changed by replacing the blades.

Advantages:

• Convenient blade change;
• Wear-resistant housing;
• Load retention during emergency shutdown of systems.

Flaws:

• There may be problems finding consumables.

Magnetic grab for working with metal loads Anvil Attachments

The design of the device uses a round electromagnet, which works much more efficiently than the classical one, because it uses the “finite element method”. Due to the use of a special alloy in the blades (alloy steel A-514), it was possible to increase their strength, while reducing their weight by 35%. The hinge axes have undergone additional processing, which will significantly increase their service life. The blades themselves can be supplied in both closed and semi-closed configurations.

Advantages:

• Huge variety of configurations;
• The body is made of alloy steel;
• Relatively small own weight.

Flaws:

• High price, despite the fact that absolutely all attachments may be needed only by a very narrow circle of buyers.

Sennebogen SMG Series Bucket Grapple

Multifunctional gripper, capable of working both with metal and suitable for digging up soil. The cutting edges can be equipped with sharpened teeth with carbide tips. The design uses materials that are not harmful to the environment. It can also be used as an earth-moving tool. It is possible to supply a version with replaceable pads for working underwater (at shallow depths).

Advantages:

• Extended service life;
• Application of environmental materials in construction;
• Multifunctionality.

Flaws:

• Requires periodic prophylaxis.

Rope grab “Professional”

This Russian-made equipment is designed to work with various bulk materials of different densities. The equipment is perfect for loading and unloading, and can be used in seaports and quarries for mining.

Advantages:

• Budget price;
• There are no problems with components (representative offices in 38 largest cities of the Russian Federation);
• Good technical support.

Flaws:

• Narrow scope of application;
• Impossibility of modernization.

4-rope grab VVMZ model VG2-2-S3-4k-O.5

Another model of a reinforced gripping device from the Russian Volga-Vyatka Mechanical Plant. Intended for transportation of bulk substances - clinker, limestone, wet sand, metallurgical slag. The use of four ropes in the system significantly increases the service life, while the force produced during gripping is increased fourfold.

Advantages:

• Increased wear resistance;
• Increased grip force;
• Great variety of materials for reloading.

Flaws:

When repositioning ropes, significant delays in work may occur.

Grab grab for excavator-loader CAT G315B WH

The model is extremely limited in its functionality, which cannot be said for its price (quite high). In this case, a major role is played by the brand, which has proven itself to be the best in this market segment over the last century. This model is intended exclusively for working with low-density materials (plastic waste, food waste, etc.)

Advantages:

• The manufacturer's brand guarantees the reliability of the design;
• Expanded volume of the working element;
• Optimal fluid flow in the circuit.

Flaws:

• Low functionality.