Category: Reel Cable
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Email: postmaster@suoqi-cable.com
Shanghai Suoqi Cable — Product Details of Flexible Crane Grab Cable System for Lifting Grab Buckets
1. Company Strength
Shanghai Suoqi Electric Wire & Cable Co., Ltd. is a high-tech enterprise in the field of special cables, focusing on the research and production of cables dedicated to lifting equipment. The company has an experienced technical team and can provide customized cable solutions for complex working conditions (such as high-frequency movement, heavy load, and harsh environments). Relying on a full-process quality control system (ISO 9001), the company strictly controls each procedure, from the procurement of high-purity oxygen-free copper conductors to the extrusion of wear-resistant sheaths, to ensure that the products have excellent mechanical performance and electrical stability. The products cover industries such as ports, metallurgy, and mining, having served over 2,000 enterprises and earned a reputation as a "reliable supplier of lifting cables."
2. Details of the crane grab cable system for the flexible grab of the hoisting grab bucket
(1) Product Positioning
A highly flexible power control cable specifically designed for grab buckets and crane grab systems, meeting the strict requirements of high-frequency bending, strong tension, and torsion resistance during the lifting, translation, and grabbing processes of grab devices, ensuring the reliability of power and signal transmission.
(2) Core Application Scenarios
Industry
Typical equipment
Operating Conditions Characteristics
Port / Pier
Shore grab cranes and ship unloaders
High salt spray corrosion, humid environments, frequent start-stop cycles
Metallurgy / Steel
Scrap steel grab hoist, slag scrap grab machine
High-temperature radiation, dusty content, heavy-duty tensile conditions
Mine /quarry
Ore grab loader, excavation grab bucket
Rock impact wear, mud immersion, and strong mechanical stress
Waste treatment plant
Garbage grab bucket crane
Oil contamination, microbial erosion, and complex curved paths
(3) Core Characteristics
1. Exceptional mechanical properties
Tensile and torsional resistance: Built-in galvanized steel wire rope and aramid fiber dual reinforcement, tensile strength ≥ 3000N, capable of withstanding vertical tension when the grab bucket is fully loaded; Special twisting process enhances torsional resistance, adapting to 360° rotation of the grab.
Wear and tear resistance: The outer sheath uses imported polyurethane (PU) or neoprene rubber (CR), with a wear resistance index of ≤80mg (DIN 53516) and tear strength of ≥25kN/m, resisting scrapes from rocks, scrap steel, and other sharp objects.
2. High flexibility and bending resistance
Bending life: Can withstand **≥2 million bending movements** (bending radius 8× cable outer diameter), compatible with grab systems with a reciprocating frequency of over 30 times per minute.
Low-temperature flexibility: Remains soft even in -40°C environments, allowing normal use for outdoor work in northern winter without preheating.
3. Environmental adaptability
High temperature resistance: conventional models can withstand -40°C~90°C, while custom high-temperature models can reach -60°C~180°C (such as in the scenario of a metallurgical furnace front grab).
Corrosion resistance: The sheath is resistant to salt spray corrosion (passing a 1000h neutral salt spray test) and acid and alkali (pH 3~11), suitable for corrosive environments such as ports and chemical industries.
Flame and explosion-proof: Complies with IEC 60332-1 flame retardant standard, with optional explosion-proof type (Ex) to meet safety requirements in flammable and explosive scenarios.
4. Electrical stability
Low impedance transmission: multi-stranded finely stranded oxygen-free copper conductors (purity ≥ 99.99%), conductivity 3% higher than ordinary copper, reducing energy loss.
Anti-interference design: optional double-layer shielding with aluminum foil and copper braiding (shielding efficiency ≥95dB), resists strong electromagnetic interference from grab motors, frequency converters, and other components.
(4) Cable structure analysis
Structural layer
Materials / Craftsmanship
Function description
Conductor
Multi-stranded oxygen-free copper wire (IEC 60228 Class 6)
Ultrafine stranding enhances flexibility and adapts to high-frequency bending
Insulation
Special silicone rubber / Cross-linked polyethylene (XLPE)
High insulation strength (breakdown voltage ≥ 15kV), aging resistant
Tensile layer
Galvanized steel wire rope (central load-bearing) Aramid fibers (outer layer)
Shares mechanical stress and prevents conductor breakage
Shielding layer
Aluminum foil wrapping Tinned copper wire braiding (optional)
Anti-electromagnetic interference, ensuring stable transmission of control signals
Sheath
Polyurethane (PU) / Chloroprene Rubber (CR)
Matte surface finish, low stickiness for easy installation, antimicrobial
(5) Electrical Parameters
Project
Standard value
Customization scope
Rated voltage
Customizable 1kV～10kV
Long-term operating temperature
High temperature type: -60℃~180℃
Minimum bending radius
8× Cable Outer Diameter (Mobile Installation)
6× cable outer diameter (compact equipment)
Insulation resistance
Short-circuit temperature
250℃ (continuous 5s)
3. Product Advantages
(1) Direct supply from the source factory, flexible delivery
Price advantage: Eliminates the middleman, with prices 15%-20% lower than similar products.
Quick response: Standard models ship within 72 hours, customized orders can be delivered in as fast as 5 working days (requires prior discussion of process complexity).
(2) Deep customization capability
Multi-core combination: supports any combination of 2~60 cores, capable of integrating power lines, control lines, and fiber optics, achieving "multi-system integration" wiring.
Special identification: The sheath can print continuous meter marks, customer logos, or QR codes (scanning the code allows traceability to production batches).
Explosion-proof: Customizable Ex d/Ex ia explosion-proof cables, suitable for flammable and explosive areas via ATEX, IECEx, etc.
(3) Quality Assurance System
Fourfold detection and control:
Raw material inspection: copper wire elongation ≥35%, sheath Shore hardness 80±5A
Process inspection: conductor twisting pitch error ≤±2%, sheath thickness uniformity ≥98%
Finished product testing:
Bending fatigue test (2 million cycles without breakage)
Tensile test (no deformation under 3 times rated load for 1 hour)
Salt spray corrosion test (no cracks on the rear sheath after 1000 hours)
Qualifications: ISO 9001, etc
4. Selection Recommendations
Grab type
Recommended cable models
Number of cores / cross-sectional area
Reinforcement component configuration
Applicable environments
Lightweight grab bucket (≤10t)
Aramid fiber
Indoor warehouse and logistics scenarios
Medium grab bucket (10-50t)
Galvanized steel wire rope aramid
Ports, mines
Heavy-duty grab bucket (≥50t)
Double galvanized steel wire rope
Metallurgy and heavy machinery
Note: If underwater operations are required (such as grab dredging), customizable waterproof cables (sheathed polyurethane longitudinal water-blocking layer) with waterproof pressure ≥ 0.6MPa.
