Double Cylinder Grab Bucket with Teeth
Overview
The Double Cylinder Bucket with Teeth Grab Head is a robust mechanical attachment engineered for heavy-duty material handling. It integrates two synchronized hydraulic cylinders to deliver superior gripping power compared to single-cylinder designs, making it ideal for challenging environments like mining and demolition. The replaceable teeth ensure prolonged service life by allowing easy replacement of worn components. Commonly mounted on excavators or loaders, it excels in tasks requiring precision and force, such as sorting scrap metal or loading irregularly shaped debris.
Structure and Working Principle
The grab head comprises a reinforced steel frame, dual hydraulic cylinders, and interchangeable teeth. The cylinders operate in tandem to close the bucket jaws evenly, distributing pressure across the material. Teeth are typically bolted or welded to the jaw edges for efficient penetration into dense materials. A rotating mechanism (optional) enables 360-degree positioning, enhancing operational flexibility. Hydraulic hoses connect to the host machine’s system, with flow rates adjusted to balance speed and clamping force. Key structural elements include wear-resistant plating at high-stress points and sealed bearings to protect moving parts from debris. The dual-cylinder design minimizes uneven wear and reduces the risk of jaw misalignment, a common issue in single-cylinder models.
Key Features
1. **Enhanced Durability**: High-tensile steel construction and hardened teeth (e.g., 45 HRC) resist abrasion and impact. 2. **Optimized Force Distribution**: Dual cylinders provide balanced clamping, reducing material slippage. 3. **Modular Teeth**: Standardized tooth pockets allow quick replacement without specialized tools. 4. **Rotation Capability**: Optional slewing bearings enable full-circle rotation for precise placement. 5. **Adaptability**: Compatible with various host machines via standardized mounting plates (e.g., Euro/Global carriers). Additional features may include greaseable pivot points for reduced friction and integrated safety locks to prevent accidental opening during transport.
Application Areas
This attachment is widely used in construction (handling rebar, concrete debris), forestry (log sorting), scrap yards (metal recycling), and mining (ore or aggregate loading). Its dual-cylinder design is particularly effective for unstable or uneven materials, such as demolished building fragments or loose rocks. In waste management, it streamlines the separation of recyclables from mixed debris. Specialized variants with narrower jaws or sharper teeth cater to niche tasks like handling railroad ties or dredging riverbeds. The rotation function is critical for applications requiring precise material positioning, such as loading trucks or feed hoppers.
Maintenance and Precautions
Regular maintenance includes inspecting teeth for cracks or excessive wear (replace if wear exceeds 30%), checking hydraulic hoses for leaks, and lubricating pivot points every 50–100 operating hours. Avoid overloading beyond the rated capacity (e.g., 1–5 tons, depending on model) to prevent cylinder strain or frame deformation. Storage recommendations include cleaning the grab head after use to remove abrasive particles and storing it in a dry area to prevent rust. For long-term inactivity, retract cylinders fully to avoid seal degradation. Always follow the manufacturer’s torque specifications when replacing teeth or bolts.
B2B Procurement Guide
When sourcing this equipment, prioritize manufacturers with ISO 9001 certification and proven experience in heavy machinery attachments. Request material certificates (e.g., Hardox or Q345B steel) and hydraulic pressure test reports. Key procurement considerations include: 1. **Compatibility**: Verify pin diameters, carrier weight limits, and hydraulic flow rates. 2. **Teeth Availability**: Ensure replacement teeth are readily available (common types like H130 or Tiger). 3. **After-Sales Support**: Opt for suppliers offering warranties (typically 1 year) and local service networks. For reference, prices vary based on size and customization. Standard models (1–2 ton capacity) range from $2,500–$4,000, while heavy-duty versions (5+ tons) may cost $5,000–$6,000. Bulk orders (10+ units) often qualify for 5–10% discounts.