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About JLG 660SJ Telescopic Boom Lift

Main Description

The JLG 660SJ is a high-reach diesel-powered telescopic boom lift built for productivity, speed, and performance on rugged outdoor job sites. With a platform height of 66 ft (20.02 m) and a working height of up to 72 ft (21.95 m), it delivers long horizontal outreach and fast lift speeds, making it ideal for construction, industrial maintenance, and steel erection. Its straight boom design provides unmatched stability and precision when working at extended distances, and the optional dual-capacity platform increases versatility for heavy tools or multiple workers.

📝 Description

The JLG 660SJ telescopic boom lift combines powerful reach with smooth operation and enhanced control. Its straight boom offers a horizontal outreach of 57 ft 1 in (17.4 m), allowing operators to access distant or hard-to-reach areas efficiently. Designed for outdoor use, it features a diesel engine, 4-wheel drive, and oscillating axles, providing excellent performance on uneven terrain. The platform can rotate 180° for optimal positioning, and the optional dual-capacity system allows up to 340 kg (750 lbs) for heavier loads. With fast lift and extend speeds, the 660SJ helps reduce downtime and improve job site efficiency.

⚙️ Technical Details

Specification	Value
Platform Height	66 ft (20.02 m)
Working Height	72 ft (21.95 m)
Horizontal Outreach	57 ft 1 in (17.4 m)
Platform Capacity	250 kg (550 lbs) standard / 340 kg (750 lbs) dual
Platform Size	0.91 m x 2.44 m (36 in x 96 in)
Power Source	Diesel (e.g., Deutz D2011)
Drive System	4WD with oscillating axles
Gradeability	Up to 45%
Platform Rotation	180° hydraulic
Turntable Rotation	360° continuous
Machine Width	2.49 m (8 ft 2 in)
Machine Length	10.97 m (36 ft)
Machine Height (Stowed)	2.57 m (8 ft 5 in)
Ground Clearance	0.30 m (12 in)
Weight	~13,400 kg (29,500 lbs)
Drive Speed (Stowed)	6.8 km/h (4.25 mph)

📎 Additional Information

Straight Telescopic Boom: Provides faster lift speeds and better stability at full extension compared to articulating models.
Dual Capacity (Optional): Offers 250 kg unrestricted and 340 kg restricted, improving load versatility.
Operator Safety: Equipped with tilt alarm, descent alarm, platform entry mid-rail, and fall protection anchor points.
All-Terrain Capability: 4-wheel drive and oscillating axles allow reliable operation on rough or sloped surfaces.
Maintenance-Friendly: Swing-out engine trays and centralized diagnostics simplify service and troubleshooting.
Common Applications: Ideal for steel erection, building construction, sign installation, facility maintenance, and outdoor industrial work where long horizontal outreach is essential.