When the job calls for serious horizontal outreach and elevated access on rough ground, the JLG 660SJ telescopic boom lift is built to answer. With a working height of over 22 meters and a reach of more than 17 meters, this straight boom is all about coverage, control, and capability—even in demanding job site conditions.
It’s a favorite for construction, steelwork, energy projects, and more. So if your work needs to reach out, not just up, here’s why the 660SJ might be your next best move.
What Is the JLG 660SJ?
The JLG 660SJ is a diesel-powered telescopic boom lift—also known as a straight boom or stick boom. Unlike articulating booms that bend around obstacles, telescopic booms are designed for maximum horizontal outreach, giving you a fast, direct path to your work area.
It’s part of JLG’s popular 600 Series, engineered for serious job site efficiency.
Core Specs: What You’re Working With
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Platform height: 20.02 m (65 ft 8 in)
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Working height: 22.02 m (72 ft 3 in)
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Horizontal outreach: 17.40 m (57 ft 1 in)
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Platform capacity: 250 kg (550 lbs) unrestricted / 340 kg (750 lbs) restricted
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Power: Diesel engine (optional dual fuel)
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Machine width: 2.49 m
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Gradeability: 45%
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Drive speed: Up to 6.3 km/h
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Jib length: 1.83 m (6 ft) with 130° range of motion
This lift is built to get you out and over fast—perfect for jobs where working space is limited, but you still need to cover ground horizontally.
What Makes the 660SJ Stand Out?
✅ Extended Horizontal Reach
With over 17 meters of outreach, the 660SJ can cover serious ground without needing to reposition the base. That’s a huge timesaver on large job sites or when obstacles block access.
✅ Elevated Productivity
The FastRise boom system and impressive drive speed (up to 6.3 km/h) mean you can move between work areas and get into position quickly—especially helpful on time-sensitive jobs.
✅ Dual Capacity Advantage
The 660SJ offers a dual-capacity platform—250 kg unrestricted and 340 kg restricted—which means it can safely lift heavier loads when boom positioning allows. Great for lifting tools, materials, and two-person crews with no compromise.
✅ Rough Terrain Performance
With full-time 4WD, oscillating axles, and a 45% gradeability rating, the 660SJ handles mud, gravel, and slopes like a champ. It’s built to work where the ground isn’t exactly flat.
Where You’ll See the 660SJ in Action
This model is a mainstay in jobs that need height, outreach, and mobility:
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Steel erection and industrial construction
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Petrochemical and power plant maintenance
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Commercial cladding and facade work
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Stadiums, bridges, and infrastructure
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Outdoor signage, lighting, and telecom
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Wind turbine access (low level)
If the job involves working far off the side of a structure, the 660SJ has the reach to get you there.
Operator-Friendly Design
Working at 20+ meters off the ground is no joke, and JLG has built this boom to make life easier and safer:
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Proportional controls for smooth, precise boom movement
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130° articulating jib for pinpoint positioning
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Self-leveling platform with rotation for better access angles
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Platform load sensors and alerts for safety compliance
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All motion alarms and emergency stop systems
It’s designed to help operators work smarter and stay confident at height.
Designed for the Real World
The 660SJ isn’t just about reach—it’s about working efficiently on today’s job sites:
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Easy maintenance access for quick servicing
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Built-in diagnostics for fast troubleshooting
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Telematics compatibility for fleet tracking
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Strong resale value and global support from JLG
Contractors and rental fleets love it because it’s tough, fast, and dependable.
Optional Add-Ons & Packages
Depending on your needs, the 660SJ can be outfitted with:
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Cold weather kits
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Hostile environment kits
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On-board generator for tools
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Flashing beacon for visibility
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Non-marking or foam-filled tires
These options allow you to customize the lift for different environments, whether you’re indoors, outdoors, or somewhere in between.
Final Thoughts: Long Reach Without the Hassle
The JLG 660SJ is the kind of machine that works as hard as you do. It’s built for big outdoor jobs that need real reach and reliable ground performance—but it’s not overloaded with unnecessary complexity.
With its extended outreach, dual capacity platform, and terrain-handling design, the 660SJ delivers the kind of flexibility and performance that makes crews more productive and job sites more efficient.
So when your next project needs to go long, strong, and high—the JLG 660SJ is ready to lift.