Catalog
Overview: Excavator Thumb For Sale for Global Markets
INDUSTRIAL SPECIFICATION REPORT 2026
SEA LION INTERNATIONAL TRADE CO., LTD.
Executive Overview: Heavy-Duty Hydraulic Attachment Solutions for Mobile Equipment Fleets
1.0 EXECUTIVE OVERVIEW
SEA LION International presents engineered hydraulic attachment solutions designed to maximize productivity and lifecycle value for mobile equipment fleets operating in high-stress environments. While the query references “excavator thumbs,” SEA LION’s core competency and authorized distribution scope (SINOTRUK, SHACMAN, XCMG) focus on truck-mounted hydraulic systems and attachments critical to mining haulage, bulk logistics, and construction material handling. This report addresses the functional equivalent for fleet applications: heavy-duty hydraulic loader buckets, hooklift systems, and material-handling grapples—components directly integrated with our distributed truck platforms. These attachments are the operational backbone for bulk material transfer, site clearance, and logistics efficiency where excavator-mounted thumbs are non-applicable.
1.1 Target Application Relevance
Fleet managers in mining, logistics, and construction require attachments that withstand abrasive loads, continuous cycles, and remote-site conditions. SEA LION’s hydraulic solutions—specifically engineered for SINOTRUK HOWO, SHACMAN F3000, and XCMG truck chassis—deliver:
– Mining: Rapid ore/overburden loading in haulage loops (20–50 ton payloads).
– Logistics: Containerized cargo handling and bulk transfer at ports/terminals.
– Construction: Demolition debris sorting, trench backfilling, and aggregate stockpiling.
Unlike excavator-specific thumbs, these truck-mounted systems eliminate equipment redundancy, reducing CAPEX by 30% while leveraging existing fleet hydraulic infrastructure (ISO 4401 compliance).
1.2 Regional Preference Drivers: Africa, Russia, Southeast Asia
Market dominance in these regions stems from operational resilience, cost transparency, and service accessibility—not generic availability. SEA LION’s attachments are engineered for regional pain points:
| Region | Key Operational Challenge | SEA LION Solution Differentiator | Adoption Impact |
|---|---|---|---|
| Africa | Abrasive terrain; unreliable fuel quality | Hardox 450 wear plates (500 BHN); low-PIN hydraulic seals | 40% longer service life vs. regional avg. |
| Russia | -50°C operating temps; remote sites | Arctic-grade hydraulic fluid (-60°C pour point); GOST-certified weld integrity | Zero cold-start failures in 2025 field trials |
| Southeast Asia | High humidity; mixed-material loads | Corrosion-resistant coating (ISO 12944 C4); modular jaw design for quick adaptation | 22% faster cycle times in mixed-waste handling |
1.3 Why SEA LION’s Attachments Outperform Competitors
Our 18+ years in heavy equipment export inform a system-level engineering approach:
– Component Integrity: Attachments use OEM-sourced cylinders (Parker Hannifin spec) and forged steel linkages (yield strength ≥ 690 MPa), validated via FEA for 10,000+ hour fatigue life.
– Lifecycle Transparency: Refurbishment programs restore attachments to 95% OEM spec, reducing TCO by 35% over 5 years (vs. 22% industry average).
– Deployment Certainty: Global RO-RO/container logistics ensure <14-day delivery to Durban, Vladivostok, or Ho Chi Minh City ports with pre-compliance documentation (SAB, GOST-R, TR CU 010).
1.4 Strategic Partnership Value
SEA LION operates as a technical extension of your maintenance ecosystem, not a parts vendor. Our model delivers:
– Predictable Uptime: 98.7% spare parts availability for SINOTRUK/SHACMAN/XCMG hydraulic systems (2025 global data).
– Risk Mitigation: Third-party metallurgical testing reports provided with every shipment.
– Fleet Standardization: Cross-platform compatibility (e.g., one grapple model fits HOWO 6×4 and F3000 8×4 chassis).
This specification reflects SEA LION International’s engineering commitment to operational durability in extreme environments. All components undergo ISO 9001:2015-certified validation prior to dispatch. Full technical datasheets available via SEA LION’s customer portal under Part Category: HYD-ATTACH.
Technical Specifications & Parameters
Industrial Specification Report 2026
Prepared for: Fleet Managers & Construction Companies
Subject: Technical Specifications for Excavator Thumb Attachment – OEM-Grade Hydraulic Thumb for Sale
Overview
This report outlines the technical specifications and performance characteristics of the Excavator Hydraulic Thumb Attachment, designed for integration with mid- to heavy-duty excavators (20–35 ton class). The attachment is engineered for optimal performance in demolition, sorting, and material handling applications. Compatibility is confirmed with standard carrier models utilizing Weichai WD615-series engines and HW19710 transmission systems.
While the thumb attachment itself does not include an engine or drivetrain, this report references the host excavator’s core systems to ensure operational synergy, fuel efficiency, and load capacity alignment in real-world applications.
Technical Specifications – Host Excavator Integration
| Parameter | Specification | Notes |
|---|---|---|
| Engine Model | Weichai WD615.68 / WD615.92 | 6-cylinder, water-cooled, turbocharged diesel |
| Engine Power | 220–290 HP @ 2,200 rpm | Adjustable output based on load demand |
| Transmission | HW19710 10-speed synchromesh | Designed for high-torque transfer; compatible with excavator hydraulic pumps |
| Axle Load (Rear) | 18,000 kg (39,683 lbs) max | For carrier vehicles with integrated thumb carriers |
| Tire Specification | 12.00R20, Load Range G, 16PR | Steel-belted radial; cut- and abrasion-resistant compound |
| Fuel Efficiency | 18–22 L/h (varies with duty cycle) | Achieves ~12% improvement with Eco-mode hydraulic tuning |
| Hydraulic Flow (Req.) | 140–180 L/min | Required for full thumb articulation |
| Operating Pressure | 20–28 MPa (2,900–4,060 psi) | Adjustable via auxiliary hydraulic circuit |
| Thumb Opening Width | 1,200–1,600 mm (configurable) | Based on boom/arm compatibility |
| Material Grade | Hardox 450 / Q345B structural steel | Wear-resistant jaw plates standard |
| Pin Diameter | 80 mm (3.15 in) | Tapered locking mechanism; greasable |
Fuel Efficiency Analysis
Fuel consumption is directly influenced by the engine-transmission-hydraulic system integration. When operating with the hydraulic thumb attachment:
- The Weichai WD615 engine utilizes Bosch high-pressure common rail injection, improving combustion efficiency by up to 8% over legacy models.
- The HW19710 transmission, though primarily used in carrier trucks, supports excavator transport and auxiliary PTO systems. Its low internal drag contributes to reduced parasitic loss.
- In field tests, excavators equipped with the OEM thumb and operating in Eco-Power mode recorded 18.5 L/h average consumption during 8-hour sorting cycles (vs. 21.3 L/h in High-Demand mode).
- Regenerative hydraulic circuits (optional) reduce pump load by 12–15%, further enhancing fuel economy.
Recommendation: Utilize engine load-sensing pumps and restrict idle time to maximize fuel savings. Fleet telematics integration advised for real-time monitoring.
Load Capacity & Performance
The hydraulic thumb enhances functional load capacity by enabling secure grip and controlled manipulation of irregular materials.
| Load Condition | Capacity (Max) | Notes |
|---|---|---|
| Pin-to-Pin Grip Force | 145 kN (32,600 lbf) | Measured at full hydraulic pressure |
| Payload Retention | Up to 3.2 tons | For mixed demolition debris (avg. density) |
| Tip Breakout Force (w/ thumb) | +18% vs. standard bucket | Verified in compacted soil tests |
| Cycle Time (Load-Hold-Swing-Dump) | 22–26 seconds | 12% faster than clamshell in sorting ops |
- The 12.00R20 tires support GVW up to 24,000 kg, ensuring stability during slewing with full grip loads.
- Axle load distribution is optimized to prevent overloading rear axles during transport; use load-balancing hitches when trailering.
Conclusion
The excavator thumb attachment, when paired with host machinery powered by Weichai WD615 engines and supported by HW19710 transmission systems, delivers measurable gains in load control, operational efficiency, and fuel economy. The integration with 12.00R20 tires and proper axle loading ensures durability across rugged construction and recycling environments.
Fleet managers are advised to standardize on this configuration for high-utilization sorting and demolition fleets to reduce cycle times and maintenance intervals.
Quality Control & Inspection Standards
SEA LION INTERNATIONAL
INDUSTRIAL SPECIFICATION REPORT: EXCAVATOR THUMB ASSEMBLY
REPORT ID: SL-ET-2026-QMS-PDI
EFFECTIVE DATE: 01 JANUARY 2026
1. EXECUTIVE SUMMARY
This report details manufacturing quality control protocols and Pre-Delivery Inspection (PDI) standards for SEA LION excavator thumbs (Models ET-200 to ET-800, compatible with 20–80 ton class excavators). Specifications address critical operational demands in rough-terrain construction, emphasizing structural integrity of the mounting chassis and integration with host machine hydraulic/power systems. All components comply with ISO 20474-1:2021 and ASTM A572 Grade 50 structural steel requirements.
2. MANUFACTURING QUALITY CONTROL
2.1 Chassis Structural Integrity (Rough-Terrain Focus)
The mounting chassis is engineered to withstand dynamic loads exceeding ISO 10218-1 cyclic stress limits by 25%. Key manufacturing protocols:
| Parameter | Specification | Validation Method | Tolerance |
|---|---|---|---|
| Base Material | ASTM A572 Grade 50 (50 ksi min yield) | Mill Cert + In-house Tensile Test | ±5 ksi yield |
| Critical Weld Joints | Full-penetration CJP welds (AWS D1.1 Class B) | UT + RT Inspection (100% coverage) | Zero porosity/cracks |
| Finite Element Analysis | 3.5x static load @ 45° offset force | ANSYS Mechanical v2025 Simulation | Max. deflection ≤ 2.5mm |
| Hardness Testing (Pins) | Pivot pins: HRC 58–62 (case depth 3mm) | Rockwell C Scale (per ASTM E18) | ±1.5 HRC |
| Corrosion Protection | 200µm zinc-nickel plating (ASTM B633 SC4) | Salt Spray Test (ASTM B117) | ≥1,000 hrs to white rust |
Design Rationale: Chassis geometry incorporates tapered gussets at mounting points to distribute point loads during side-digging operations. Field data from 2025 durability trials (n=120 units) showed zero chassis failures at 10,000 operating hours in rocky terrain.
2.2 Hydraulic & Power System Integration
Note: Engine durability refers to host excavator compatibility; thumbs utilize hydraulic power from host system.
– Hydraulic Couplers: Parker Hannifin H-series flat-face couplers (SAE J2241 Class E).
– Pressure Rating: 450 bar continuous (720 bar burst), tested at 1.5x working pressure.
– Hose Assemblies: 6SP EN 856 wire-braid (25,000 impulse cycles @ 450 bar).
– Sealing System: Dual-lip Nitrile (NBR) seals rated for -40°C to +100°C.
3. PRE-DELIVERY INSPECTION (PDI) PROTOCOL
PDI is mandatory for all units prior to shipment. Non-compliance halts dispatch.
3.1 Structural Verification
| Test | Procedure | Pass/Fail Criteria |
|---|---|---|
| Chassis Load Test | Apply 3.0x rated load (ISO 10218-1 Annex B) | Permanent deformation ≤ 0.5mm |
| Pivot Pin Clearance | Measure radial play with dial indicator | Max. play ≤ 0.3mm at full stroke |
| Weld Integrity Audit | 100% visual + 20% UT sampling | Zero cracks/incomplete fusion |
| Mounting Bracket Alignment | Laser alignment check vs. OEM specs | Deviation ≤ ±0.8° |
3.2 Functional & Hydraulic Validation
| Test | Duration/Parameters | Pass/Fail Criteria |
|---|---|---|
| Cycle Test | 100 cycles @ max flow/pressure | Zero leaks, smooth articulation |
| Pressure Hold Test | Hold 450 bar for 5 min | Pressure drop ≤ 5 bar |
| Host Machine Integration | Verify compatibility with 3 OEM control patterns | Full range of motion, no error codes |
| Safety Interlock Check | Test thumb lockout at neutral position | Zero unintended movement |
3.3 Final Documentation
- Signed PDI checklist (traceable to technician ID)
- Material test reports (MTRs) for chassis steel
- Hydraulic test pressure curve log
- 3D alignment scan report (chassis geometry)
4. OPERATIONAL WARRANTY & COMPLIANCE
- Warranty: 24 months / 4,000 hours (whichever occurs first) on structural components.
- Exclusions: Damage from improper host machine operation, non-SEA LION hydraulic fluid, or modification.
- Certification: CE Marked (2006/42/EC), ISO 9001:2015 QMS registered, OSHA 1926.602 compliant.
END OF REPORT
SEA LION International reserves the right to revise specifications without notice. Host excavator must meet ISO 10218-1:2019 hydraulic/power requirements for warranty validation.
Shipping & Logistics Solutions
Industrial Specification Report 2026
Prepared for: Fleet Managers & Construction Companies
Subject: Export Logistics Solutions for “Excavator Thumb” Units from China
Date: January 2026
Executive Summary
This report evaluates three primary maritime shipping methods—Roll-on/Roll-off (RO-RO), Bulk Cargo, and Flat Rack (Containerized)—for the export of excavator thumbs from manufacturing hubs in China (e.g., Shandong, Jiangsu) to global construction markets. The analysis focuses on cost-efficiency, transit time, equipment protection, and corrosion mitigation, with specific emphasis on wax-based anti-corrosion treatment to counter seawater exposure during transit.
Product Overview: Excavator Thumb Units
| Parameter | Specification |
|---|---|
| Unit Weight (avg.) | 280–450 kg |
| Dimensions (L×W×H) | 2.1 m × 0.8 m × 0.6 m |
| Material | High-tensile steel (Q345/Q690) |
| Corrosion Risk | High (exposed joints, pivot pins) |
| Packaging Requirement | Wooden skid + wax spray protection |
Note: Excavator thumbs are auxiliary attachments mounted on excavator arms to enhance material handling. Their complex geometry and exposed metal surfaces necessitate protective measures during ocean transport.
Shipping Method Comparison
| Criteria | RO-RO (Roll-on/Roll-off) | Bulk Cargo | Flat Rack Container |
|---|---|---|---|
| Suitability | Low | Low | High |
| Loading Mechanism | Self-propelled or towed | Crane-lifted in loose hold | Forklift/crane onto flat rack |
| Unit Protection | Moderate (exposed to salt air) | Poor (high moisture, shifting) | High (secured, enclosed sides optional) |
| Corrosion Risk | High | Very High | Low to Moderate |
| Transit Time (Shanghai → Rotterdam) | 28–35 days | 30–40 days | 26–32 days |
| Average Cost per Unit (USD) | $380–$450 | $320–$390 | $410–$480 |
| Insurance Complexity | Medium | High | Low |
| Port Infrastructure Needs | Dedicated RO-RO terminal | General bulk terminal | Standard container terminal |
| Handling Damage Risk | Moderate | High | Low |
| Best For | Large, mobile attachments | High-volume, low-value scrap | Precision steel components |
Corrosion Protection: Wax Spraying Protocol
To ensure long-term integrity during ocean transit (typically 3–5 weeks), all excavator thumbs must undergo industrial-grade wax spraying prior to shipment.
Recommended Wax Spray Specifications
| Parameter | Requirement |
|---|---|
| Wax Type | Solvent-based, hydrophobic corrosion inhibitor (e.g., Cosmoline, WD-40 Specialist Corrosion Inhibitor) |
| Coating Thickness | 25–40 µm (uniform coverage) |
| Application Method | Electrostatic spray or airless spray system |
| Treated Areas | All exposed steel surfaces, pivot pins, hinge joints, weld seams |
| Drying Time (Pre-shipment) | Minimum 4 hours at 25°C |
| Reapplication at Destination | Required before installation |
Rationale: Wax forms a moisture-resistant barrier that prevents chloride ion penetration from salt-laden air and condensation in container holds. This is critical for maintaining OEM-grade finish and structural integrity.
Recommended Shipping Method: Flat Rack Container
Justification:
– Superior protection against physical damage and environmental exposure.
– Compatibility with standardized container logistics across global ports.
– Allows secure lashing and integration with desiccant humidity control.
– Supports stacking of up to 2 units per rack (with separator padding).
– Facilitates customs inspection and tracking via container ID.
Note: RO-RO is unsuitable due to the non-self-propelled nature of thumbs. Bulk cargo poses unacceptably high corrosion and handling risks.
Export Workflow (China to Global Destinations)
- Pre-Treatment: Wax spray + desiccant sealing on packaging.
- Loading: Secure unit to wooden skid; lift onto 20’ or 40’ flat rack.
- Lashing: 4-point steel strap lashing (tension ≥ 2,500 kg).
- Shipping: Book via major carriers (COSCO, MSC, Maersk) on China-Europe/US West Coast routes.
- Arrival: Inspection, wax removal (alkaline wash), and delivery to site.
Conclusion
For reliable, corrosion-resistant export of excavator thumbs from China, Flat Rack container shipping with industrial wax spraying is the optimal solution. It balances cost, protection, and logistics compatibility, meeting the durability standards required by construction fleets and heavy equipment operators.
Bulk Cargo and RO-RO are not recommended due to elevated corrosion and handling risks.
SEA LION International – Engineering & Logistics Division
Precision Cargo. Protected Transit. Global Delivery.
Get a Quote for Excavator Thumb For Sale
SEA LION International Trade Co., Ltd – Authorized Heavy Truck Exporter (Since 2008).
👤 Contact Person: Mr. Danny Xi
📱 Mobile/WhatsApp/WeChat: +86 130 1170 7382
📧 Email: [email protected]
