Four Sheaves Combined Block Heavy Duty Pulley System For Power Transmission Line Construction

Core Features

• Forged alloy steel construction with zinc-plated surfaces
• Four precision-engineered sheaves on premium sealed bearings
• 360° swivel hook with automatic safety latch
• Working Load Limit: 3-20 tons (configurable)
• Compatible with 1/4" to 7/8" diameter wire ropes
• Bright orange powder-coated finish for high visibility

Performance Advantages
◆ 40% reduction in required manpower vs single-sheave blocks
◆ 30% faster cable pulling operation completion
◆ 4:1 mechanical advantage for heavy lifting
◆ Dynamic load tolerance up to 2.5x WLL
◆ Corrosion-resistant for outdoor use (IP54 rating)

Safety Compliance
✓ OSHA 29 CFR 1926.251 compliant
✓ ANSI/ASME B30.26 certified
✓ Magnetic particle inspected components
✓ Clearly stamped load rating plates
✓ Anti-swing weight distribution design

Maintenance & Service
• Self-lubricating bearing system
• Field-replaceable wear components
• Inspection ports for visual checks
• RFID tracking tag compatible
• 24-month warranty against defects

Typical Applications
► Transmission tower structural member lifting
► Conductor stringing operations
► Substation transformer positioning
► Underground cable pulling guidance
► Temporary guy wire tensioning

Optional Accessories

• Synthetic rope sheave inserts (nylon/PVC)
• Weatherproof storage cover
• Custom load rating charts
• Laser-etched asset ID tags
• Mobile inspection app integration

Suntech Power Group is one of the largest Procurement, Engineering & Contracting Group companies in China.Our group branch company and factory have already engaged

in the field of electric power more than 26 years.

1.Steel structure industry especially steel towers and related products which include power towers and substation structures, telecommunication towers and related products of telecom sites, street light poles and so on.

2.Transmission line stringing tools and equipments,undergroud cable pulling tools incuded Stringing Blocks,Hoisting Tackles,Cable Rollers,Conductor Gripper,Gasoline Powered Winch,Hydraulic Puller Tensioner,Gin Poles,Inspection Trolleys and other rated machines.

3.Power fittings,transmission insulators and wires and cables included Suspension insulator,glass insulator,porcelain insulator,aluminum conductor steel reinforced,all aluminum alloy conductor,aluminum clad steel strand, aerial bounded cable,power cable,holding clamp,pulling clamp with pulley,arch plates,connector pipes and rated fittings.

And our branch company Ningbo Suntech Power Machinery Tools Co.,Ltd. as a professional global supplier

who have been exporting more than 90 countries in the world, we have been trying to focus on the comprehensive solutions like provides all related products and engineering services as client's requirement, for example from engineering consultant, design services, drawing services, manufacturing, transportation, supervision and even installation construction & maintenance services.

Insisting on business philosophy of “To be honest, To get win-win” and service concept of pursuing maximizing customer value , makes it win great reputations from both telecommunication operators and electricity power operators,we are willing to develop and share sucess with you.