STL-22J Self-Propelled Straight Boom Lift for Heavy-Duty Elevated Work
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Product Overview
STL-19EJ 19 m Electric Self-Propelled Straight Boom Lift for Low-Noise Worksites
Onchtech STL-19EJ is a pure electric self-propelled straight boom lift with a 21 m working height, 14.9 m horizontal outreach, 250 kg platform capacity, and 48 V 420 Ah battery power. Designed for low-noise, zero-emission work in urban maintenance, facade finishing, and indoor projects. OEM/ODM customization available.
- Platform Capacity
- 250 kg
- Drive and Steering
- 4WD × 2WS
- Maximum Horizontal Outreach
- 14.9 m
- Power Source
- 48 V, 420 Ah
- Gradeability
- 35%
- Maximum Working Height
- 21 m
Core Advantages
Zero-Emission Operation
Low-Noise Work Capability
Extended Horizontal Reach
Rough-Terrain Mobility
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Product Parameters
| Dimensions | Performance | ||
|---|---|---|---|
| Max Working Height | 21m | Load Capacity | 250kg |
| Max Platform Height | 19m | Max Occupants | 2 |
| Max Horizontal Reach | 14.9m | Travel Speed (Stowed) | 5.1km/h |
| Length – Stowed [D] | 9.5m | Travel Speed (Raised) | 1.1km/h |
| Width – Stowed [E] | 2.28m | Gradeability (Stowed) | 35% |
| Height – Stowed [C] | 2.65m | Inside Turning Radius (Extended) | --- |
| Platform Size [A×B] | 1.83m*0.76m | Inside Turning Radius (Stowed) | 3.98m |
| Wheelbase [F] | 2.465m | Outside Turning Radius (Extended) | --- |
| Ground Clearance [G] | 0.45m | Outside Turning Radius (Stowed) | 6.61m |
| Turntable Tail Swing | 1.36m | ||
| Max Allowable Tilt Angle | 5° | ||
| Turntable Rotation | 360° | ||
| Tires | 36*14-20 | ||
| Max Ground Noise Level | ≤82dBA | ||
| Power | Weight | ||
| Power Source | 48V, 420AH (48V/40A) | Standard Weight | 10350kg |
| Fuel tank capacity | 102L | ||
| Drive steering | 4WD*2WS | ||
Product Details
Onchtech Electric Telescopic Boom Lift
19m Electric Self-Propelled Telescopic Boom for Eco-Friendly Construction
Onchtech STL-19EJ is a 19‑meter electric self‑propelled telescopic boom lift, featuring all‑electric power and off‑road four‑wheel drive, designed for high‑altitude construction tasks that require significant horizontal coverage. The machine is suitable for commercial building facade maintenance, property repairs, nighttime emergency work, and projects with strict emission and noise control requirements. It offers project purchasers, equipment rental companies, and contractors a electric aerial work platform that balances high‑reach access with site adaptability.
Aerial Work Capability
21m
Maximum Working Height
Used to determine the high‑altitude work positions the machine can cover, suitable for building facades, eaves, and elevated equipment zones.
14.9m
Maximum Horizontal Reach
The forward coverage provided by the telescopic boom allows crossing ground obstacles or maintaining a safe working distance from building perimeters while reaching target areas.
4WD
Off‑Road Drive Configuration
Designed for moving between different work points on construction sites; actual passability should be verified against ground hardness, slopes, and on‑site obstacles.
All‑Electric Power and Low‑Noise Operation
48V 420Ah Battery Pack
STL-19EJ is equipped with a 48V, 420Ah battery pack, providing the power foundation for all‑electric self‑propelled operation, suitable for projects aiming to reduce fuel‑powered equipment usage.
82 dBA Ground‑Level Sound Pressure Level
The low operating sound pressure level makes the machine more suitable for nighttime urban maintenance, commercial property repairs, and work periods with strict noise control requirements.
Zero‑Emission Operation
Electric drive eliminates diesel exhaust at the worksite, making it convenient for indoor exhibition finishing work and urban construction areas with stringent emission management.
Application Scenarios
Commercial Building Facade Work
Used for facade painting, inspection, and installation. The 21m working height and 14.9m horizontal reach help workers cover elevated positions around the building perimeter.
High‑End Property Repairs
Suitable for facade maintenance, lighting repairs, and similar work in villa areas or commercial properties. The all‑electric power adapts well to environments sensitive to exhaust emissions.
Nighttime Urban Emergency Repairs
Used for high‑altitude maintenance and emergency repairs along urban roads. The 82 dBA sound pressure level helps reduce environmental impact during operation.
Indoor Exhibition Finishing Work
Can be used for high‑level assembly, arrangement, and maintenance inside exhibition halls and similar indoor spaces, meeting project conditions with strict emission and noise control requirements.
Suitable Buyers and Selection Considerations
STL-19EJ is suitable for aerial work equipment rental companies, engineering contractors, property maintenance service providers, urban facility operators, and brand owners and channel customers looking to introduce electric telescopic boom products. When selecting, it is recommended to verify the target working height and horizontal reach, and to comprehensively assess site ground conditions, slopes, access dimensions, platform load requirements, continuous operation schedules, and local noise and emission regulations. Hunan Hongchang Machinery Co., Ltd., leveraging Onchtech's construction machinery manufacturing capabilities, is available for B2B clients to discuss product configurations and OEM, ODM, or OBM cooperation.
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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