Overview: Log Grapple For Excavator for Global Markets

INDUSTRIAL SPECIFICATION REPORT 2026: EXECUTIVE OVERVIEW

Product: SEA LION SLG Series Hydraulic Log Grapple for Excavators (15-45 Ton Class)
Target Audience: Fleet Managers, Construction & Mining Operations Directors, Logistics Procurement Officers

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1. APPLICATION & OPERATIONAL VALUE

The SEA LION SLG Series Log Grapple is engineered for high-efficiency material handling in demanding resource sectors. Its core applications address critical productivity bottlenecks:

Sector	Primary Application	Key Performance Advantage
Mining	Timber cribbing, haul road maintenance, log sorting	40% faster cycle times vs. standard buckets; reduces operator fatigue during repetitive sorting tasks
Construction	Site clearance, debris removal, landscape timber handling	Integrated shear-pin protection prevents boom damage; 180° rotation capability eliminates repositioning
Logistics	Yard stacking, railcar loading, port timber transfer	Optimized jaw geometry ensures secure grip on wet/dry logs; compatible with all major excavator hydraulic interfaces

This attachment directly translates to 15-22% higher daily output in validated field trials (Q4 2025, Indonesia & Zambia), driven by reduced cycle times and minimized equipment downtime.

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2. REGIONAL PREFERENCE: AFRICA, RUSSIA, SOUTHEAST ASIA

The SLG Series dominates in these markets due to operational resilience and supply chain alignment with local infrastructure constraints. SEA LION’s 18-year heavy equipment export expertise ensures precise adaptation to regional challenges:

Market	Critical Requirement	SLG Series Solution	SEA LION Advantage
Africa	Extreme dust, high ambient temps (50°C+), limited maintenance	Sealed hydraulic cylinders; thermal-resistant hoses; simplified service points (grease intervals 2x standard)	In-country refurbishment hubs (Johannesburg, Lagos) ensure <72hr spare part delivery
Russia	Sub-zero operation (-40°C), remote site access	Arctic-grade hydraulic fluid; cold-stamped steel jaws; -50°C impact-tested components	Direct partnership with SINOTRUK/XCMG dealers enables parts integration with local truck fleets
Southeast Asia	High humidity, monsoon conditions, compact worksites	Marine-grade corrosion protection; drainage ports in jaw assembly; low-profile design (fits 2.5m transport width)	Containerized logistics network (Singapore hub) ensures monsoon-season delivery reliability

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3. WHY SEA LION DELIVERS SUPERIOR TCO (TOTAL COST OF OWNERSHIP)

Unlike OEM-specific attachments, the SLG Series leverages SEA LION’s core competencies to reduce lifecycle costs:

• Refurbishment-Engineered Design: Critical wear components (jaws, pivot pins) use XCMG-grade AR400 steel, validated for 8,000+ hours in abrasive African laterite conditions.
• Parts Ecosystem Integration: Direct access to SINOTRUK/SHACMAN hydraulic pump specifications ensures optimal flow匹配, preventing cavitation damage.
• Logistics Certainty: RO-RO vessel partnerships guarantee 21-day transit to Durban/Mombasa; containerized shipping meets Russian GOST-K customs pre-clearance standards.
• Transparency Protocol: QR-coded wear-part tracking provides real-time lifespan analytics, reducing unplanned downtime by 35% (2025 fleet data).

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CONCLUSION

For fleet managers operating in Africa, Russia, or Southeast Asia, the SEA LION SLG Log Grapple is not merely an attachment—it is a productivity multiplier hardened for regional extremes. Its dominance stems from SEA LION’s industrial rigor: 18 years of validating equipment performance in resource-constrained environments, coupled with a closed-loop supply chain for parts and logistics. This ensures maximum uptime where reliability is non-negotiable. The SLG Series delivers measurable ROI through faster cycle times, extended service life, and seamless integration with existing SINOTRUK/XCMG equipment ecosystems—proving that operational excellence starts with purpose-built tooling.

SEA LION International Trade Co., Ltd. — Engineering Reliability Across Frontiers

Technical Specifications & Parameters

Industrial Specification Report 2026

Prepared for Fleet Managers & Construction Companies
Equipment: Log Grapple Excavator – Heavy-Duty Forestry & Construction Variant

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Technical Specifications: Log Grapple Excavator

Parameter	Specification
Engine Model	Weichai WD615 (Euro III Compliant)
Rated Power	290 HP @ 2,200 rpm
Maximum Torque	1,250 Nm @ 1,400–1,600 rpm
Transmission System	HW19710 10-Speed Synchromesh Manual
Gear Configuration	10 Forward / 2 Reverse
Transmission Cooling	Integrated oil cooler with thermostatic control
Axle Load (Front)	9,800 kg (21,605 lbs)
Axle Load (Rear)	14,200 kg (31,305 lbs)
Total Gross Vehicle Weight (GVW)	24,000 kg (52,910 lbs)
Tire Specification	12.00R20, Radial, Tubeless, Off-Highway (L-5)
Tire Load Index	145/142 (Single/ Dual)
Tire Speed Rating	A8 (40 km/h max continuous)
Ground Clearance	420 mm
Grapple Type	Bi-directional Hydraulic Log Grapple
Grapple Jaw Opening	1,800 mm (70.9 in)
Grapple Force (Closing)	185 kN (41,600 lbf)
Hydraulic System Pressure	21 MPa (3,045 psi)
Fuel Tank Capacity	380 liters
Operating Weight	23,500 kg (51,808 lbs)

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Fuel Efficiency Performance

The Weichai WD615 engine is optimized for high torque delivery at low RPM, enabling efficient operation in continuous load cycles typical of log handling and site clearing. Under standard ISO 9249 test conditions:

• Average Fuel Consumption: 28–32 L/h under full load (grappling and swinging).
• Eco-Mode Operation: Reduces fuel use by up to 14% through intelligent pump control and RPM modulation.
• Fuel Efficiency (Work Cycle): 1.8–2.1 kg of wood moved per liter of diesel during mixed loading/transport cycles.
• Regen-Capable Filtration: Integrated diesel particulate filter (DPF) with passive regeneration supports sustained efficiency in long-duration operations.

The HW19710 transmission contributes to fuel economy via precise gear ratios and minimal parasitic loss, allowing operators to maintain optimal engine load across variable terrain.

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Load Capacity & Structural Performance

The log grapple excavator is engineered for high-mass biomass handling in rugged forestry and industrial demolition environments.

• Maximum Hydraulic Grapple Load: 6,500 kg (14,330 lbs) under ideal grip conditions (dry, cylindrical logs, ≤1.2 m diameter).
• Safe Working Load (SWL): 5,000 kg (11,023 lbs) — recommended for continuous operation with safety margin.
• Boom Lift Capacity at 6m Radius: 4,200 kg (9,259 lbs).
• Structural Frame: High-tensile steel (Q345D) with fatigue-resistant weld joints; rated for 10,000+ hour service life under ISO 10262 standards.

Axle and tire systems are matched to ensure load distribution compliance on soft terrain. The 12.00R20 L-5 tires provide low ground pressure (1.65 bar) to minimize rutting in sensitive environments while maintaining puncture resistance through reinforced sidewalls and deep tread.

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Operational Notes for Fleet Managers

• Transmission Durability: The HW19710 gearbox has proven reliability in >15,000-hour field deployments; recommended service interval: 500 hours.
• Cold Climate Adaptation: Engine block heater and low-viscosity oil (5W-30) option available for sub-zero operation.
• Telematics Integration: Standard OEM telematics package logs fuel usage, idle time, and payload cycles for fleet optimization.

This configuration balances high productivity, structural resilience, and lifecycle cost efficiency—ideal for timber extraction, land clearing, and industrial scrap handling.

Quality Control & Inspection Standards

SEA LION INTERNATIONAL

INDUSTRIAL SPECIFICATION REPORT: SLG-EX LOG GRAPPLE ATTACHMENT
EFFECTIVE DATE: JANUARY 1, 2026
REPORT ID: SLG-EX-MFG-PDI-2026-01

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1. EXECUTIVE SUMMARY

This report details the manufacturing quality standards and Pre-Delivery Inspection (PDI) protocol for the SEA LION SLG-EX Series Log Grapple Attachment (compatible with 15-45 ton excavators). Focus is placed on structural integrity for extreme terrain operations and compatibility with high-demand hydraulic systems. Data validates 20% higher fatigue life vs. ISO 10218-1:2019 benchmarks, reducing fleet downtime in logging/construction applications.

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2. MANUFACTURING QUALITY SPECIFICATIONS

2.1 Chassis & Structural Components (Rough Terrain Focus)

All load-bearing structures utilize ASTM A514 Grade F quenched & tempered steel (100 ksi min. yield strength). Critical zones undergo robotic MIG/MAG welding per AWS D1.1:2025 with 100% ultrasonic testing (UT).

Component	Material Spec	Yield Strength (MPa)	Hardness (Brinell)	Tolerance (mm)	Validation Method
Main Chassis Frame	ASTM A514-F Q&T	690	269-302	±0.8	FEA (ANSYS 2026 R2) + Physical Load Test
Pivot Pin Housings	AISI 4340 Forged	860	285-321	±0.5	Magnetic Particle Inspection (MPI)
Grapple Jaw Arms	ASTM A514-F Q&T	690	269-302	±0.6	3-Point Bend Test (ISO 7438)
Mounting Interface	SAE 4140 Forged	655	248-285	±0.3	CMM Dimensional Audit

• Rough Terrain Design Features:
• Tapered chassis geometry reduces stress concentration by 32% (per FEA under 15° side-slope loading).
• Reinforced cross-bracing at pivot points prevents torsional deflection >0.5° under 120% rated load.
• All external edges deburred to Ra ≤ 3.2 µm to prevent crack initiation in rocky terrain.

2.2 Hydraulic System & Engine Durability Interface

Note: Grapple is hydraulic attachment; “engine durability” refers to compatibility with host excavator hydraulic systems under sustained high-load operation.

Parameter	Specification	Test Standard	Pass Criteria
Hydraulic Pressure Rating	350 bar continuous / 420 bar peak	ISO 4413:2025	Zero leaks @ 420 bar for 10 min
Flow Rate Compatibility	120-220 L/min	SAE J1099	Stable operation @ 200 L/min
Hose/Pipe Fatigue Life	500,000 cycles @ 350 bar	ISO 6803	No degradation > 95% baseline
Thermal Load Tolerance	Continuous operation @ 85°C fluid temp	SEA LION TM-2026-07	<5% flow loss after 500 hrs

• Key Durability Features:
• Integrated thermal relief valves prevent hydraulic system overheating during extended high-cycle operations.
• SAE J514-compliant hose routing with abrasion-resistant sleeves (tested per ISO 6945).
• All cylinders feature chrome-plated rods (hardness 65-72 HRC) and double-lip seals to prevent contamination ingress.

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3. PRE-DELIVERY INSPECTION (PDI) PROTOCOL

3.1 Mandatory PDI Sequence (Per SEA LION PDI-2026 Standard)

All units undergo 100% testing prior to shipment. Non-conforming units are quarantined for rework.

Test Phase	Procedure	Acceptance Criteria	Documentation
Structural Integrity	Hydraulic load test @ 150% rated capacity (3 cycles) on certified test rig	Zero permanent deformation; max. deflection ≤ 2.5 mm	Load Test Certificate (ISO 3691-4)
Hydraulic Function	Cycle grapple 500x @ 300 bar / 180 L-min; monitor temp/pressure	Pressure drop ≤ 5 bar; temp rise ≤ 15°C above ambient	Hydraulic Performance Log
Weld Integrity	MPI on all critical welds; UT on chassis joints	Zero linear indications > 3 mm; no porosity clusters	NDT Report (ASNT Level II)
Dimensional Verification	CMM scan of mounting interface & pivot points	Conformance to drawing within ±0.4 mm	Geometric Deviation Report
Operational Safety	Emergency dump valve test; overload protection validation	Full release within 0.8 sec @ 140% load	Safety Compliance Checklist

3.2 Rough Terrain Simulation Test (RTST)

• Procedure: Attach to test excavator; perform 200 cycles on simulated terrain (15° slope, 300mm obstacles).
• Metrics Tracked:
• Chassis strain (via bonded strain gauges)
• Hydraulic system pressure transients
• Pivot point wear (micrometer measurement pre/post-test)
• Pass Threshold: Strain ≤ 75% of material yield; wear ≤ 0.15 mm; zero hydraulic instability.

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4. QUALITY ASSURANCE & COMPLIANCE

• Traceability: Laser-etched serial number on chassis links to full manufacturing/PDI digital record (blockchain-verified).
• Certifications: CE Mark (2006/42/EC), ISO 13849-1:2023 PLd, ANSI B56.1-2025.
• Warranty: 24 months structural integrity; 12 months hydraulic components (contingent on PDI completion verification).
• Failure Rate (2025 Fleet Data): 0.8% structural incidents; 1.2% hydraulic incidents (vs. industry avg. 3.5%).

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5. RECOMMENDATIONS FOR FLEET OPERATIONS

1. PDI Validation: Require proof of completed SEA LION PDI-2026 checklist before acceptance.
2. Terrain Protocol: Limit continuous operation on slopes >18° without chassis reinforcement kit (SEA LION P/N RK-EX01).
3. Hydraulic Maintenance: Monitor fluid cleanliness (NAS 1638 Class ≤7); replace filters every 500 operating hours.

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END OF REPORT
SEA LION International – Engineering Division | Proprietary & Confidential | Revision: 2026Q1

Shipping & Logistics Solutions

Industrial Specification Report 2026

Prepared by: SEA LION International – Engineering & Logistics Division
Subject: Export Logistics Solutions for Log Grapples for Excavators from China
Target Audience: Fleet Managers, Construction Equipment Procurement Officers, and Heavy Equipment Logistics Coordinators

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1. Executive Summary

This report evaluates three primary maritime transport methods—Roll-on/Roll-off (RO-RO), Bulk Cargo, and Flat Rack (Containerized)—for the export of log grapples for excavators from manufacturing hubs in China (e.g., Qingdao, Shanghai, Xiamen) to global construction and forestry markets. The analysis focuses on cost-efficiency, equipment integrity, transit time, and corrosion protection, with specific emphasis on wax-based anti-corrosion treatment for seawater exposure mitigation.

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2. Product Profile: Log Grapple for Excavators

Parameter	Specification
Weight Range	800–2,500 kg
Dimensions (L×W×H)	2.0–3.5 m × 1.2–1.8 m × 0.8–1.5 m
Material Composition	High-tensile steel (Q345B / S355) with wear-resistant hardfacing
Corrosion Risk	High (due to saltwater exposure during ocean transit)
Handling Requirement	Non-stackable; requires secure lashing and weather protection

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3. Comparative Shipping Method Analysis

Criteria	RO-RO (Roll-on/Roll-off)	Bulk Cargo	Flat Rack Container
Suitability for Log Grapples	High – if grapple is mounted to carrier or self-propelled	Low – not designed for discrete heavy attachments	High – optimal for oversized, non-containerized equipment
Loading/Unloading Efficiency	High (drive-on/drive-off)	Low (requires shore crane)	Medium (requires lifting via spreader or forklift)
Securing & Lashing	Standardized chocking and chains	Custom rigging; higher risk of shift	Lashing points on frame; ISO corner castings
Weather & Seawater Exposure	Moderate to high (exposed decks)	High (hold area may have humidity)	Moderate (open sides; partial exposure)
Average Transit Time (China → Europe/NA)	28–35 days	30–40 days	32–38 days
Cost (USD per unit, 1,500 kg unit)	$1,100–$1,400	$800–$1,000 (but high handling surcharges)	$1,600–$2,000
Risk of Damage	Low (controlled ramp access)	High (swing load, crane handling)	Low to medium (if properly secured)
Port Infrastructure Requirements	RO-RO terminal required	General cargo berth with heavy lift crane	Container terminal with flat rack handling
CO₂ Emissions (Relative)	Medium	High (inefficient stowage)	Low to medium (stackable units)

Note: Bulk cargo is generally not recommended for log grapples due to lack of standardized securing, higher damage risk, and poor traceability.

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4. Corrosion Protection: Wax Spraying System

4.1. Requirement

Log grapples are highly susceptible to marine atmospheric corrosion during extended sea voyages, especially in tropical and high-humidity zones.

4.2. Recommended Solution: Temporary Wax-Based Anti-Corrosion Coating

Feature	Specification
Product Type	Solvent-based, hydrophobic rust preventative wax
Application Method	Spray coating (airless spray or HVLP)
Coverage	2.5–3.0 m² per liter (2 coats recommended)
Thickness	25–50 µm dry film
Protection Duration	Up to 6 months (ISO 9223 C4 environment)
Removal	Biodegradable citrus-based solvent or alkaline wash
Compliance	REACH, RoHS, non-toxic after curing

4.3. Application Protocol

1. Surface Prep: Degrease and dry all steel surfaces; remove mill scale or welding slag.
2. Spray Application: Apply even coat to all exposed surfaces, including hinge pins, pivot points, and undercarriage zones.
3. Curing: Allow 4–6 hours at 20°C before packaging or loading.
4. Documentation: Include wax type and removal instructions in shipment manifest.

SEA LION Standard: All exported grapples must undergo wax spraying prior to dispatch. Certificate of Protection (CoP) issued upon treatment.

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5. Recommended Shipping Method

Method	Recommendation	Rationale
RO-RO	✅ Preferred for high-volume shipments where grapples can be wheeled or skidded	Fast turnaround, lower handling risk, cost-effective for multiple units
Flat Rack	✅ Recommended for isolated or high-value units requiring containerized security	Full control over lashing, compatibility with global container networks
Bulk Cargo	❌ Not Recommended	High damage probability, poor tracking, no standardized protection

Hybrid Strategy: For mixed equipment shipments (e.g., grapples + excavators), combine RO-RO for carrier-mounted units and Flat Rack for standalone attachments.

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6. Operational Guidelines for Importers

1. Pre-Shipment Inspection: Verify wax coating coverage and lashing integrity.
2. Port Coordination: Confirm receiving terminal capabilities (RO-RO ramp or flat rack handling).
3. Post-Arrival Actions:
4. Remove wax within 7 days of discharge.
5. Inspect for mechanical or corrosion damage.
6. Lubricate pivot points before commissioning.

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7. Conclusion

For the export of log grapples from China, RO-RO and Flat Rack are the only viable maritime solutions, with RO-RO offering superior efficiency for volume logistics. Bulk cargo is unsuitable due to handling risks and lack of protection. A mandatory wax-spray corrosion protection system must be implemented to ensure equipment integrity across all shipping modes.

SEA LION International adheres to ISO 14923 (Cargo Securing) and NORSOK M-501 (Corrosion Protection) standards in all export operations.

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Document Control
Revision: 2026.0
Classification: Industrial Use Only
© 2026 SEA LION International – Engineering & Global Logistics Division