Cat® draglines offer the lowest material removal cost per ton, consume less power and emit fewer greenhouse gases than other methods of overburden removal, making them the most productive and environmentally friendly excavators in the industry. The Cat® 8750 is our flagship model. It’s the first dragline of any kind to be successfully equipped with AC IGBT drive systems — a superior technology developed for the sole purpose of making your loading operations more productive, predictable and safe. And like all Cat draglines, the 8750 is supported by a team with a century of experience, institutional knowledge and unmatched expertise.
Caterpillar
8750 Dragline
Overview
Photos
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8750 Dragline -
8750 Dragline -
8750 Dragline -
8750 Dragline -
8750 Dragline -
8750 Dragline
360° View
Exterior
360° Exterior view. Double click on the image to zoom in on any area of the product.
Interior
360° interior view. Double click on the image to zoom in on any area of the product.
Documents
Features
SAFETY
- Ingress/egress doors, with rear door featuring level floor to prevent trip hazards, particularly in cases of emergency where rapid exit from the cab is necessary.
- Superior visibility with full operator-to-boom point line of sight, plus maximum operator situational awareness provided by five optimally mounted cameras and operator cab mounted overhead displays.
- Safe and convenient access with non-skid material on roof and shoe walkway surfaces to prevent falls, and serrated bar grating stairs, platforms and walkways that facilitate safe movement around the machine.
- Unique three seat design that accommodates operator, trainer and maintenance person; observer's seat positioned behind operator to provide maintenance personnel with the operator's view while them to monitor operator actions; and separate operator and trainer emergency stop buttons.
- Safety-enhanced electrical system, with emergency stop system that is hardwired dual string with safety relay; all operator interface controls that are 24 volt; available Arc Flash evaluation; single point of motion disable for mechanical maintenance of machine; key interlocking to prevent access to incoming High Voltage connection areas; and stored energy warning signs installed.
SAFETY
- Ingress/egress doors, with rear door featuring level floor to prevent trip hazards, particularly in cases of emergency where rapid exit from the cab is necessary.
- Superior visibility with full operator-to-boom point line of sight, plus maximum operator situational awareness provided by five optimally mounted cameras and operator cab mounted overhead displays.
- Safe and convenient access with non-skid material on roof and shoe walkway surfaces to prevent falls, and serrated bar grating stairs, platforms and walkways that facilitate safe movement around the machine.
- Unique three seat design that accommodates operator, trainer and maintenance person; observer's seat positioned behind operator to provide maintenance personnel with the operator's view while them to monitor operator actions; and separate operator and trainer emergency stop buttons.
- Safety-enhanced electrical system, with emergency stop system that is hardwired dual string with safety relay; all operator interface controls that are 24 volt; available Arc Flash evaluation; single point of motion disable for mechanical maintenance of machine; key interlocking to prevent access to incoming High Voltage connection areas; and stored energy warning signs installed.
OPERATOR CAB
- State-of-the-art operator cab that is the product of a multi-year collaboration between Caterpillar, mining companies and operators.
- Provides industry-leading visibility with excellent line of sight supplemented by optimally mounted cameras and display screens.
- Reduced cognitive fatigue and enhanced productivity via the intuitive and visually aesthetic display screens.
- Effortless operation and improved control response resulting from new Hall Effect joysticks (patent pending), with custom-designed ergonomic handles and “finger touch control” spring tension.
OPERATOR CAB
- State-of-the-art operator cab that is the product of a multi-year collaboration between Caterpillar, mining companies and operators.
- Provides industry-leading visibility with excellent line of sight supplemented by optimally mounted cameras and display screens.
- Reduced cognitive fatigue and enhanced productivity via the intuitive and visually aesthetic display screens.
- Effortless operation and improved control response resulting from new Hall Effect joysticks (patent pending), with custom-designed ergonomic handles and “finger touch control” spring tension.
RELIABILITY
- Equipped with AC IGBT Electrics, which deliver superior availability — routinely greater than 95% — thanks to fewer components, interchangeable inverters; no filters; no fuses or circuit breakers required; elimination of regular maintenance on power control modules; and reduced maintenance resulting from lack of motor and generator brushes requiring change-out.
- Electric drive system that operates independent of mine network, delivering full power with voltage ±10% and ability to continue to operate with reduced power with voltage –10% to –30%.
- Highly reliable swing planetary transmission and output pinion, with interchangeable parts across all swing drives, potential for machine to operate with removal of one swing unit (typical maintenance), cooler/filtration unit plumbed to each planetary gearcase, and ability to control and monitor via dragline Programmable Logic Controller (PLC).
- Hoist/drag machinery featuring parallel shaft gearcases, with eccentric bearing cartridges for optimal gear alignment; gearing, bearings, drums, etc., that are interchangeable between hoist and drag motions; splash lubricated gearcases with optional filtration available; leak-proof inspection hatches for inspection of all gear mesh; drums that are mounted on self-aligning, anti-friction bearings; and motors coupled to input pinions with grid couplings to reduce impact loads.
- Propel machinery featuring heavy duty eccentric cam, driven by bull gear and parallel shaft gearbox; eccentric bushing continuously monitored via RTDs; and PLC that will alarm and shut down machine if permissible temperatures are exceeded.
RELIABILITY
- Equipped with AC IGBT Electrics, which deliver superior availability — routinely greater than 95% — thanks to fewer components, interchangeable inverters; no filters; no fuses or circuit breakers required; elimination of regular maintenance on power control modules; and reduced maintenance resulting from lack of motor and generator brushes requiring change-out.
- Electric drive system that operates independent of mine network, delivering full power with voltage ±10% and ability to continue to operate with reduced power with voltage –10% to –30%.
- Highly reliable swing planetary transmission and output pinion, with interchangeable parts across all swing drives, potential for machine to operate with removal of one swing unit (typical maintenance), cooler/filtration unit plumbed to each planetary gearcase, and ability to control and monitor via dragline Programmable Logic Controller (PLC).
- Hoist/drag machinery featuring parallel shaft gearcases, with eccentric bearing cartridges for optimal gear alignment; gearing, bearings, drums, etc., that are interchangeable between hoist and drag motions; splash lubricated gearcases with optional filtration available; leak-proof inspection hatches for inspection of all gear mesh; drums that are mounted on self-aligning, anti-friction bearings; and motors coupled to input pinions with grid couplings to reduce impact loads.
- Propel machinery featuring heavy duty eccentric cam, driven by bull gear and parallel shaft gearbox; eccentric bushing continuously monitored via RTDs; and PLC that will alarm and shut down machine if permissible temperatures are exceeded.
TECHNOLOGY
- Equipped to use Cat MineStar™ Health, which delivers critical event-based machine condition and operating data, comprehensive equipment health and asset monitoring capabilities, and a wide range of diagnostic, analytic and reporting tools.
- Can utilize MineStar Terrain, which enables high-precision management of the dragline operation through the use of guidance technology, increasing productivity and providing real-time feedback for improved efficiency.
- Equipped to use MineStar Fleet, which provides real-time machine tracking, assignment and productivity management, providing a comprehensive overview
- of all asset operations from anywhere in the world.
- AccessDirect electric interface system, which reduces repair times and daily maintenance efforts and enhances local and remote diagnostic capabilities by facilitating remote access to the onboard computer; permitting monitoring, adjustment, resetting and modification of electrical parameters; and enabling high-speed data transfer.
TECHNOLOGY
- Equipped to use Cat MineStar™ Health, which delivers critical event-based machine condition and operating data, comprehensive equipment health and asset monitoring capabilities, and a wide range of diagnostic, analytic and reporting tools.
- Can utilize MineStar Terrain, which enables high-precision management of the dragline operation through the use of guidance technology, increasing productivity and providing real-time feedback for improved efficiency.
- Equipped to use MineStar Fleet, which provides real-time machine tracking, assignment and productivity management, providing a comprehensive overview
- of all asset operations from anywhere in the world.
- AccessDirect electric interface system, which reduces repair times and daily maintenance efforts and enhances local and remote diagnostic capabilities by facilitating remote access to the onboard computer; permitting monitoring, adjustment, resetting and modification of electrical parameters; and enabling high-speed data transfer.
PERFORMANCE AND RELIABILITY UPGRADES
- Full mechanical component upgrades for existing draglines, with Finite Element Analysis expertise to ensure that replacement parts outperform the original components.
- Mechanical upgrades that include major dragline structure repair/replacement for improved reliability and productivity enhancement; boom modifications to optimize Rated Suspended Load (RSL), operating radius, digging depth and dumping height; and re-engineered components for improved performance.
- Electrical upgrade solutions that allow the electrical system to work in harmony with onboard mechanical systems, allowing owners of legacy draglines to reap the benefits of the latest technology.
- Electrical upgrades that include drive system upgrades for enhanced performance; programmable Logic Controller (PLC) & Human Machine Interface (HMI) upgrades for enhanced safety and availability; Production Monitoring System for optimized productivity; and onboard troubleshooting and remote diagnostics for improved reliability.
PERFORMANCE AND RELIABILITY UPGRADES
- Full mechanical component upgrades for existing draglines, with Finite Element Analysis expertise to ensure that replacement parts outperform the original components.
- Mechanical upgrades that include major dragline structure repair/replacement for improved reliability and productivity enhancement; boom modifications to optimize Rated Suspended Load (RSL), operating radius, digging depth and dumping height; and re-engineered components for improved performance.
- Electrical upgrade solutions that allow the electrical system to work in harmony with onboard mechanical systems, allowing owners of legacy draglines to reap the benefits of the latest technology.
- Electrical upgrades that include drive system upgrades for enhanced performance; programmable Logic Controller (PLC) & Human Machine Interface (HMI) upgrades for enhanced safety and availability; Production Monitoring System for optimized productivity; and onboard troubleshooting and remote diagnostics for improved reliability.
Specifications
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Specifications
Spec Value Bucket Capability 76-116 m3 (100-152 yd3) Boom Length 109.7-132.5 m (360-435 ft) Working Weight - Approximate 5.8-7.5 million kg (13.1-15.9 million lb) -
Dimensions - Working Ranges
Spec Value Boom Lengths 109.7-132.5 m (360-435 ft) Bucket Capabilities 76-116 m3 (100-152 yd3) Rated Suspended Load 226,800-344,736 kg (500,000-760,000 lb)
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