What is the difference between the mechanical grabs and the hydraulic grabs?In terms of material handling, choosing the right grab can significantly affect efficiency and productivity.The two common types of grapple used in cranes are mechanical grapple and hydraulic grapple.Let’s explore their differences and understand when to choose each type.

First of all, let’s take a look at what is a hydraulic grab and a mechanical grab：

वर्गीकरण

---

Working principle

---

आवेदन

---

रखरखाव

The hydraulic grabs of the crane is controlled by a hydraulic system, which has the advantages of high precision and flexible operation. It is suitable for loading and unloading bulk cargo and occasions that require fine operation, but its structure is complex and the maintenance cost is high. The mechanical grabs relies on wire rope control, which is suitable for handling large pieces of materials and heavy-duty operations in harsh environments. The structure is relatively simple and the maintenance cost is low. When choosing, the type of grab to use should be determined according to the operation requirements, accuracy requirements, and operating environment.

---

सही ग्रैब का चयन कैसे करें

अपना उद्देश्य स्पष्ट करें:before delving into the options, please clarify your specific requirements.Ask yourself：

• आप किस सामग्री से काम करना चाहते हैं? (लॉग, स्क्रैप धातु, पत्थर, आदि)

• ग्रैब क्या कार्य करेगा? (लोड करना, छांटना, तोड़ना, आदि)

• इसे किस प्रकार के उपकरण से जोड़ा जाएगा? (गैन्ट्री क्रेन, ओवरहेड क्रेन)

• आपके द्वारा पकड़ी गई सामग्री का विशिष्ट गुरुत्व क्या है? पकड़ी गई सामग्री के घनों की संख्या कितनी है?

• पकड़ी जाने वाली सामग्री की विशेषताओं के अनुसार, पकड़ को आमतौर पर चार बुनियादी प्रकारों में विभाजित किया जाता है: हल्का, मध्यम, भारी और अति भारी।

पकड़ने के लिए सामग्री का प्रकार	सामग्री पकड़ो	क्षमता वजन (t/m³)
रोशनी	कोक, लावा, अनाज, आलू, मध्यम गुणवत्ता वाला एन्थ्रेसाइट चूना, सीमेंट, मिट्टी, बजरी, चिकनी मिट्टी, टूटी ईंटें आदि।	0.5~1.2
मध्यम	पीट, एन्थ्रेसाइट कोयले के बड़े टुकड़े, सघन कोयला, मिट्टी, चूना पत्थर, बजरी, नमक, बजरी, ईंटें, बॉक्साइट, लौह ऑक्साइड के गुच्छे, सीमेंट, रेत और पानी में ईंटें आदि।	1.2~2.0
भारी	चूना पत्थर, भारी मिट्टी, छोटे और मध्यम आकार के अयस्क, कठोर चट्टान, छड़ के आकार का लौह ऑक्साइड, लौह अयस्क, सीसा सांद्र पाउडर, आदि।	2.0~2.6
अधिक वजन	बड़े अयस्क, बड़े मैंगनीज अयस्क, तलछटी एकत्रित सीसा अयस्क पाउडर, आदि।	2.6~3.3

• आपके क्रेन में ग्रैब लगा हुआ है, उसका टन भार कितना है?

सहायक उपकरण अनुकूलता: सुनिश्चित करें कि ग्रैब मौजूदा उपकरणों के साथ संगत है।

बजट संबंधी विचार: ग्रैब की कीमत सीमा अलग-अलग है। ग्रैब के कार्य और स्थायित्व के आधार पर अपने बजट को संतुलित करें।

टिप्पणियां और सुझाव: ऑनलाइन शोध करें, उपयोगकर्ता समीक्षाएँ पढ़ें, और उद्योग के साथियों से सुझाव मांगें।

खरीदने से पहले क्रेन निर्माता के पास जाकर निरीक्षण और परीक्षण कराएं: यथासंभव वास्तविक परिस्थितियों में ग्रैब का परीक्षण करें। इसके प्रदर्शन, उपयोग में आसानी और समग्र कार्यक्षमता का मूल्यांकन करें।

ध्यान रखें कि सही ग्रैब चुनने के लिए कार्यक्षमता, सुरक्षा और लागत के बीच संतुलन की आवश्यकता होती है। इन कारकों पर विचार करके, आपको सही ग्रैब मिलेगा जो उत्पादकता बढ़ा सकता है और सुचारू संचालन सुनिश्चित कर सकता है।

---

Choose the appropriate hydraulic grabs and mechanical grabs according to the needs of different projects

We use 2 previous Dafangcrane projects to help you distinguish the selection.

Case1-Hydraulic grabs are used on overhead cranes

Enlarge image","alt":""}" data-wp-interactive="core/image" class="wp-block-image size-full wp-lightbox-container">

• Grab type: Electro Hydraulic Orange Peel Grabs , grab volume 4m³*ए6 

• परियोजना प्रकार: अपशिष्ट विद्युत उत्पादन परियोजनाओं में उपयोग किया जाता है, मुख्य रूप से घरेलू कचरे के मिश्रण, डंपिंग, हैंडलिंग, मिश्रण आदि से निपटने के लिए उपयोग किया जाता है ताकि एक समान अपशिष्ट संरचना सुनिश्चित की जा सके। एक दिन में 600t कचरे से निपटें; उपकरण का संचालन 8000h से अधिक है।

• सामग्री विशेषताएँ: 

• घरेलू कचरे में नमी की मात्रा 45%~65% है

• ग्रैब में कचरे का घनत्व 0.6~0.9t/m3 है

• कचरा क्षमता (कचरा डिब्बे में) 0.3~0.6t/m3

• स्थैतिक संचय कोण 65 डिग्री

• Price reference： The hydraulic grabs are more intelligent and more complex than the mechanical grab, so the price is 4.1 times that of the mechanical claw grab.

• Why choose hydraulic grabs：

भौतिक विविधता: The composition of domestic waste is complex, the moisture content is high, and the material diversity is rich, which requires a flexible grab for processing.The hydraulic grabs are multifunctional and can effectively handle materials of different types and states.

सटीकता और दक्षता को समझना: The hydraulic grabs can accurately control the grasping force and angle, and adapt to the fine operations required in the garbage disposal process, such as mixing, dumping, handling and stirring, to ensure uniform garbage composition.

मजबूत प्रसंस्करण क्षमता: प्रतिदिन 600 टन कचरा संसाधित किया जाता है, और उपकरण 8,000 घंटे तक चलता है। हाइड्रोलिक ग्रैब की स्थायित्व और कुशल प्रदर्शन उच्च तीव्रता वाले संचालन की जरूरतों को पूरा करता है।

सुरक्षा और स्थिरता: The hydraulic grabs operates smoothly, which can reduce the risk of material spilling and operation, improve work safety, and is suitable for handling domestic waste with high moisture content and large density changes.

जटिल परिचालन वातावरण के अनुकूल बनें: The hydraulic grabs can maintain efficient operation in a changeable working environment, especially suitable for garbage disposal, which requires frequent operation and flexible response to various materials.

दीर्घकालिक और उच्च आवृत्ति संचालन: The durability and stability of the hydraulic grab enable it to cope with long-term and high-frequency operations, reduce downtime, and improve overall work efficiency.

In summary, the choice of hydraulic grab is based on its comprehensive considerations of flexibility, high efficiency, durability and safety, which can effectively meet the complex and high-intensity operation needs of waste power generation projects.

Case2-Mechanical grabs are used on overhead cranes

Enlarge image","alt":""}" data-wp-interactive="core/image" class="wp-block-image size-full wp-lightbox-container">

• Grab type: मैकेनिकल चार रस्सी क्लैमशेल ग्रैब्स बाल्टी ,grab volume 4m³

• सामग्री विशिष्ट गुरुत्व: 2t/m³

• परियोजना प्रकार: धातु पाउडर चुंबकीय सामग्री कंपनियों में प्रयुक्त, पकड़ तार रस्सी स्टेनलेस स्टील तापमान प्रतिरोधी प्रकार को गोद ले।

• Price reference：The mechanical grab has a simple structure and costs about 24.39% of the hydraulic grab, making it the best choice if you are on a limited budget
• Why choose mechanical grab：

Good sealing: materials such as metal powder are easy to scatter during handling, and the mechanical grabs has a simple structure and good sealing, which can effectively prevent materials from spilling and improve the cleanliness and safety of operations.

Cost-effectiveness: The purchase and maintenance costs of mechanical grabs are low, and they are suitable for operations with limited budgets and long-term and high-frequency use.

स्थायित्व: The grab wire rope adopts stainless steel temperature-resistant type, which is suitable for material handling such as metal powders that have high requirements for temperature and corrosion resistance.

Applicable environment: For metal powder in a dry state, the gripping force and stability of the mechanical grabs are sufficient to meet the needs, and the operation is simple and easy to maintain.

Work efficiency: The mechanical grab can quickly and efficiently complete the grabbing and handling of materials, improve the overall work efficiency, and is suitable for the rapid operation needs of industrial production lines.

In summary, the choice of mechanical grab is based on its comprehensive considerations of closure, cost-effectiveness, durability, applicable environment and operating efficiency, which can effectively meet the actual needs of metal powder magnetic material companies.

---

Comprehensive comparison

It is recommended to choose mechanical grabs in the following cases：

• Harsh operating environment: In harsh environments with high dust and humidity, mechanical grabs are more reliable than hydraulic grabs and are less affected by environmental impact.

• Simplicity and cost-effectiveness are priorities: the mechanical grabs has a simple structure and low maintenance costs, which is suitable for projects with limited budgets.

• Easy maintenance: The mechanical grabs have a simple structure and a small maintenance workload, which can reduce downtime and improve operation continuity.

• Available equipment: If the existing lifting equipment does not have a hydraulic system, the mechanical grab can be used directly without additional modification or investment.

• Operation training: the operation of the mechanical grab is relatively simple, the training cost is low, and it is suitable for rapid deployment and use.

It is recommended to choose hydraulic grabs in the following cases：

• When greater gripping force is required: the hydraulic grabs are flexible in operation, the gripping force and angle can be accurately controlled, and the gripping force is stronger than that of the mechanical grabs.

• You operate hydraulic machinery: if you already have hydraulic equipment, the hydraulic grabs can be directly integrated to improve operating efficiency.

•  Safe and efficient material handling is essential: the hydraulic grabs operate smoothly, reduce material damage and operational risks, and improve work safety and efficiency.

• There are automation requirements: the hydraulic grab can be integrated with the automation control system to achieve more intelligent operations and improve the overall production efficiency.

In short, mechanical grabs and hydraulic grabs have their advantages in material handling. Evaluate your specific requirements, consider available equipment, and make an informed choice. Whether you choose the robustness and simplicity of the mechanical grabs or the accuracy of the hydraulic grabs, remember that the right grab can increase productivity and ensure smooth operation.

---

Dafang Crane offers a wide range of hydraulic and mechanical grabs, including various types of automated grabs designed to meet diverse needs. Whether you’re looking for efficient solutions for heavy lifting or specialized applications, we have the right equipment for you. Click on the image link below to explore our full selection and find the perfect grab for your business needs.

क्रेन अनुप्रयोगों के लिए 15 विभिन्न ग्रैब बकेट.