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Product Overview
STL-28J Self-Propelled Telescopic Boom Lift with 20 m Outreach
Onchtech STL-28J self-propelled telescopic boom lift provides a 29.8 m working height, up to 20 m horizontal outreach, and 300 kg/460 kg dual platform capacity for heavy outdoor construction. Cummins power and 4WD support steel structure work, elevated rail assembly, and oil and gas facility maintenance. OEM/ODM configuration customization is available.
- Platform Capacity
- 300 kg / 460 kg
- Drive and Steering
- 4WD × 2WS
- Maximum Horizontal Outreach
- 20 m / 17.8 m
- Power Source
- Cummins
- Gradeability
- 45%
- Maximum Working Height
- 29.8 m
Core Advantages
High-Reach Access
Dual Load Modes
Rough-Terrain Mobility
360° Turntable Rotation
OEM/ODM Configuration Support
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Product Parameters
| Dimensions | Performance | ||
|---|---|---|---|
| Max Working Height | 29.8m | Load Capacity | 300kg/460kg |
| Max Platform Height | 27.8m | Max Occupants | 2 |
| Max Horizontal Reach | 20m/17.8m | Travel Speed (Stowed) | 5.2km/h |
| Length – Stowed [D] | 13.1m | Travel Speed (Raised) | 1.1km/h |
| Width – Stowed [E] | 2.49m | Gradeability (Stowed) | 45% |
| Height – Stowed [C] | 2.9m | Inside Turning Radius (Extended) | |
| Platform Size [A×B] | 2.44m*0.91m | Inside Turning Radius (Stowed) | 2.5m |
| Wheelbase [F] | 3m | Outside Turning Radius (Extended) | |
| Ground Clearance [G] | 0.43m | Outside Turning Radius (Stowed) | 5.98m |
| Turntable Tail Swing | 1.51m | ||
| Max Allowable Tilt Angle | 5° | ||
| Turntable Rotation | 360° | ||
| Tires | 385/65-24 | ||
| Max Ground Noise Level | ≤82dBA | ||
| Power | Weight | ||
| Power Source | Cummins | Standard Weight | 17200kg |
| Fuel Tank Capacity | 160L | ||
| Drive / Steering | 4WD*2WS | ||
Product Details
ONCHTECH TELESCOPIC BOOM LIFT
STL-28J Self-Propelled Telescopic Boom Lift
The Onchtech STL-28J is a 28 m class self-propelled telescopic boom lift designed for heavy-duty outdoor elevated work. Its straight boom structure is intended to provide long-distance access to high and remote work positions where ground-based access equipment is limited. With a maximum working height of 29.8 m, 20 m maximum horizontal outreach, four-wheel-drive mobility and dual platform capacity options, the STL-28J is suited to contractors, equipment fleets and project buyers working on uneven, muddy or load-demanding jobsites. It addresses the practical need to position personnel, tools and materials at elevated locations while maintaining travel capability between outdoor work areas.
Working Height and Outreach Capability
29.8 m
Maximum Working Height
Maximum working height defines the highest elevated work position the machine can reach. This range supports tasks such as high steelwork installation, elevated façade assembly and maintenance of overhead process equipment.
20 m
Maximum Horizontal Outreach
The straight boom provides up to 20 m of horizontal outreach, helping operators access work zones beyond ground-level obstacles, structural edges or restricted approach areas without repeatedly relocating the machine.
300 / 460 kg
Dual Platform Capacity
The 300 kg and 460 kg dual-load capacity modes provide a selection basis for work that involves different tool and material loads. This is particularly relevant on heavy industrial projects where elevated tasks may require more than personnel access alone.
Rough-Terrain Drive Configuration
The STL-28J combines a Cummins engine, four-wheel drive and foam-filled rough-terrain tires for outdoor site movement. This configuration is intended for projects where access roads, work zones or transfer routes may include mud, ruts and uneven ground. Rather than relying on a fixed operating position, the machine is built to move between elevated work points across demanding site conditions.
Cummins engine
Power source for outdoor heavy-duty operation.
Power source for outdoor heavy-duty operation.
Four-wheel drive
Supports travel capability across uneven jobsite surfaces.
Supports travel capability across uneven jobsite surfaces.
Foam-filled tires
Specified for rough outdoor terrain conditions.
Specified for rough outdoor terrain conditions.
Application Scenarios
Industrial Steel Structure Work
For steel-frame foundation and structural assembly, the boom’s working height and horizontal reach help crews access elevated connection points across large construction footprints.
Rail Transit Viaduct Installation
During high-speed rail and light-rail viaduct façade installation, the 20 m outreach supports access to exterior assembly positions where the machine cannot be placed directly below the task.
Oil and Gas Facility Maintenance
For inspection or urgent maintenance of high process valves in large oil and gas storage facilities, the dual platform capacity is relevant when tools and maintenance materials must be carried to the work area.
Suitable Customers and Selection Considerations
The STL-28J is suitable for construction contractors, industrial maintenance teams, rail infrastructure contractors, oil and gas facility service providers, equipment rental fleets and regional machinery distributors seeking a rough-terrain telescopic boom lift for high-reach outdoor work. It is most relevant where both elevated access and long horizontal reach are required, and where site surfaces may be uneven or muddy.
When evaluating this 28 m self-propelled telescopic boom lift, buyers should confirm the required working height, required outreach, expected platform load, site ground conditions, access route and local operating requirements. For brand or market-specific projects, Onchtech can discuss applicable OEM, ODM or branding cooperation requirements based on the intended deployment conditions.
Recommended Solutions
Hunan Hongchang Machinery Co., Ltd.
Full-Chain Smart Manufacturing; Full-Scope Engineering
Company Profile
50,000+ m²
Building area
20+ countries and regions
Product and service coverage
Within 1 hour
Customer response
100+
Global customers
Manufacturing & Partnership Capabilities
OEM / ODM / OBM customization
Supports customization of complete machine configuration, structure, brand, and product development to meet the needs of different markets and channels.
R&D and manufacturing system
Capable of collaborative development of complete machines, hydraulics, power systems, and structural components, supporting continuous product development and iteration.
Global delivery and service
Provides product delivery, technical support, spare parts, and after-sales service for global markets.
Emission adaptation for global markets
Covers emission standards such as China Stage II, China Stage III, China Stage IV, Euro V, and EPA, and supports power and emission configurations for different countries and regions.
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