21m, 24m & 27m Electric Spider Aerial Work Platform

High-Reach Electric Spider Lift with Dual-Section Telescopic Tower Boom

The 21m, 24m and 27m Electric Spider Aerial Work Platforms are high-reach tracked spider lifts designed for elevated construction, maintenance, installation and inspection applications.

The series includes three models:

• THZ-21E-Li – maximum working height: 21m

• THZ-24E-Li – maximum working height: 24m

• THZ-27E-Li – maximum working height: 27m

All three models provide a 230kg rated load capacity and use a compact tracked chassis with rubber crawler tracks.

Unlike conventional diesel-powered aerial lifts, this series uses a pure electric drive system with an efficient AC motor and large-capacity battery. The electric configuration provides low-noise operation and zero direct emissions during operation, making it suitable for applications where noise and emissions need to be minimized.

The machine is equipped with a dual-section telescopic tower boom, allowing it to achieve working heights up to 27m while maintaining flexible boom positioning.

With automatic outrigger leveling, wireless remote control, proportional hydraulic control, emergency lowering, tilt protection and multiple other safety systems, these electric spider lifts provide a practical high-reach solution for professional elevated work.

Key Features

1. 21m, 24m and 27m Working Height Options

The series provides three working height options to meet different project requirements.

THZ-21E-Li

Maximum working height: 21m

A suitable choice for projects requiring high-level access around the 21m working height class.

THZ-24E-Li

Maximum working height: 24m

Provides additional vertical reach for taller buildings, structures and elevated maintenance applications.

THZ-27E-Li

Maximum working height: 27m

The highest model in this series, designed for projects requiring up to 27m working height.

With three height options, users can select a model according to the actual working height required rather than choosing a larger machine than necessary.

2. Pure Electric Drive System

The THZ-21E-Li, THZ-24E-Li and THZ-27E-Li use a pure electric drive configuration.

The machine does not require a diesel engine for normal operation.

The electric system provides several advantages for suitable applications:

• Low operating noise

• Zero direct emissions during operation

• Efficient power transmission

• Flexible indoor and outdoor applications

• Reduced dependence on fuel

• Suitable for noise-sensitive working environments

The electric configuration is particularly useful for suitable indoor, semi-indoor and urban projects where operating noise and direct emissions are important considerations.

3. Efficient AC Motor Drive

The spider lift uses an AC motor drive system.

The AC motor provides:

• High operating efficiency

• Strong starting torque

• Good low-speed control

• Long service life

• Reduced maintenance requirements

The motor drive system works together with the tracked chassis to provide smooth and reliable machine travel.

4. Large-Capacity Battery

The electric spider aerial work platform uses a large-capacity battery system.

Battery configurations include:

• THZ-21E-Li: 48V/310Ah

• THZ-24E-Li: 48V/320Ah

• THZ-27E-Li: 48V/320Ah

The large battery capacity is designed to support extended operating periods and reduce unnecessary charging interruptions during suitable work cycles.

Actual operating time depends on load, working conditions, travel frequency, temperature and operating pattern.

5. Dual-Section Telescopic Tower Boom

One of the major structural features of this series is the dual-section telescopic tower boom.

Compared with a simple single-section boom, the two-stage telescopic structure provides greater vertical access while maintaining flexible boom movement.

The high-strength boom is designed to provide a balance between rigidity and flexibility during elevated operation.

It allows the working platform to reach high positions while providing precise positioning around buildings, structures and other obstacles.

The dual-section telescopic tower boom is particularly important for the 24m and 27m high-reach spider lift models.

6. Compact Tracked Chassis

The machines use a tracked chassis rather than a conventional wheeled chassis.

The rubber crawler tracks provide flexible movement on suitable surfaces and help the machine travel across uneven outdoor terrain.

The compact crawler configuration also provides good maneuverability in restricted working environments.

The overall machine width is only 1.1m, which provides a relatively narrow access configuration for a machine in the 21m–27m working height class.

7. Rubber Crawler Tracks

The machine uses rubber crawler tracks.

The crawler system provides:

• Good traction

• Flexible movement

• Suitable outdoor mobility

• Improved ability to travel on uneven terrain

• Stable machine positioning

For indoor applications, the site floor should be checked for load capacity, surface condition and compatibility with tracked equipment before operation.

8. Automatic Outrigger Leveling

The machine is equipped with an automatic outrigger leveling system.

The outriggers provide a stable working base before elevated operation.

Automatic leveling helps simplify the setup process and allows the operator to establish the machine's working configuration more conveniently.

The machine should always be operated within the specified slope, leveling and ground-condition requirements.

9. Wireless Remote Control

The machine is operated using a wireless remote control system.

Remote control allows the operator to maintain a suitable position with a clear view of the machine and working environment.

The system provides flexible control for machine operation and positioning.

This is especially useful when the machine is working close to:

• Buildings

• Trees

• Industrial equipment

• Glass structures

• Construction components

• Other obstacles

10. Precision Proportional Hydraulic System

The machine uses a precision proportional hydraulic control system.

Proportional hydraulic control provides smooth and accurate movement.

It allows the operator to control machine functions gradually rather than using only fixed-speed movement.

This is particularly useful for high-level work requiring precise positioning.

Typical examples include:

• Glass installation

• Building facade work

• Lighting installation

• Tree maintenance

• Equipment installation

• High-level inspection

11. ±355° Non-Continuous Turntable Rotation

The turntable provides ±355° non-continuous rotation.

This gives the operator a wide working range around the machine.

The operator can position the platform across a large working area without constantly repositioning the crawler chassis.

12. ±90° Platform Rotation

The platform provides ±90° rotation.

Platform rotation allows the operator to adjust the working direction according to the specific job position.

Combined with boom extension and turntable rotation, the platform can be positioned more flexibly around structures and obstacles.

13. Dual-Screen Human-Machine Interface

The machine is equipped with a dual-screen human-machine interface.

The system supports functions such as:

• Parameter setting

• Fault diagnosis

• Parameter reading and writing

• System monitoring

• Machine status display

This helps operators understand machine operating conditions and assists maintenance personnel with troubleshooting.

14. 30% Maximum Gradeability

The spider lift provides a maximum gradeability of 30%.

The tracked chassis allows the machine to travel across suitable slopes and uneven outdoor surfaces.

Actual operation must comply with the machine's operating manual, site conditions and applicable safety requirements.

Main Product Configuration

The standard configuration includes:

• Pure electric drive system

• AC motor drive

• Large-capacity battery

• Wireless remote control

• Proportional hydraulic system

• Emergency lowering system

• Automatic outrigger leveling

• Automatic braking system

• Emergency stop button

• Fault diagnosis system

• Tilt protection system

• Rubber crawler tracks

• Dual-section telescopic tower boom

• Dual-screen human-machine interface

Technical Specifications

THZ-21E-Li / THZ-24E-Li / THZ-27E-Li

THZ-21E-Li – 21m Electric Spider Lift

The THZ-21E-Li is the entry model of this high-reach electric spider lift series, providing a maximum working height of 21m.

It combines a compact 1.1m-wide tracked chassis with a pure electric drive system and a dual-section telescopic tower boom.

The model is suitable for customers who require high working height while maintaining flexible tracked mobility and low-noise electric operation.

Key Specifications

• 21m maximum working height

• 230kg rated load

• 1.1m overall width

• 48V/310Ah battery

• AC motor drive

• 4 km/h travel speed

• 30% maximum gradeability

• Wireless remote control

• Automatic outrigger leveling

THZ-24E-Li – 24m Electric Spider Lift

The THZ-24E-Li provides a maximum working height of 24m.

It is designed for applications requiring greater vertical access than the 21m model.

With a 48V/320Ah battery, AC motor drive and tracked chassis, it provides a flexible solution for high-level maintenance and installation work.

Key Specifications

• 24m maximum working height

• 230kg rated load

• 1.1m overall width

• 48V/320Ah battery

• AC motor drive

• 4 km/h travel speed

• 30% maximum gradeability

• Wireless remote control

• Automatic outrigger leveling

THZ-27E-Li – 27m Electric Spider Lift

The THZ-27E-Li is the highest-reaching model in this series, providing a maximum working height of 27m.

It is designed for applications where additional vertical reach is required.

The 27m working height combined with the dual-section telescopic tower boom provides greater access for tall building maintenance, industrial work, tree care and other high-level applications.

Key Specifications

• 27m maximum working height

• 230kg rated load

• 1.1m overall width

• 48V/320Ah battery

• AC motor drive

• 4 km/h travel speed

• 30% maximum gradeability

• Wireless remote control

• Automatic outrigger leveling

21m vs 24m vs 27m Spider Lift

The three models share many of the same core features, while their main differences are working height, battery configuration and machine weight.

Choose THZ-21E-Li if:

• Your required working height is around 21m.

• You want a high-reach electric spider lift.

• You need a relatively lighter machine in this series.

• 21m working height is sufficient for your project.

Choose THZ-24E-Li if:

• Your project requires around 24m working height.

• You need additional vertical reach.

• You work on taller buildings or structures.

• You want to balance working height and machine size.

Choose THZ-27E-Li if:

• Your project requires up to 27m working height.

• You need maximum vertical access in this product series.

• You frequently perform high-level maintenance or installation work.

• Additional working height is more important than minimizing machine weight.

Applications of Electric Spider Aerial Work Platforms

1. Building Facade Maintenance

Electric spider lifts can provide elevated access for:

• Building facade inspection

• Exterior maintenance

• Wall repairs

• Architectural maintenance

• High-level cleaning

• Building decoration

The tracked compact chassis allows the machine to be positioned in suitable restricted-access areas.

2. Glass and Curtain Wall Installation

The precise proportional hydraulic control and platform rotation make the spider lift suitable for applications such as:

• Glass installation

• Curtain wall installation

• Facade inspection

• Glass maintenance

• Exterior building work

The operator can make controlled platform movements when positioning workers and materials.

3. Tree Trimming and Arboriculture

The 21m–27m working height range is suitable for many professional tree-care applications.

Potential uses include:

• Tree trimming

• Tree pruning

• Branch maintenance

• Tree inspection

• Landscape maintenance

• Arboricultural work

The tracked chassis provides flexible mobility on suitable outdoor terrain.

4. Industrial Maintenance

Electric spider lifts can provide elevated access in suitable industrial environments for:

• Equipment inspection

• Lighting maintenance

• High-level installation

• Facility maintenance

• Structural inspection

• Industrial building maintenance

The low-noise electric drive is particularly useful where operating noise needs to be minimized.

5. Electrical and Lighting Work

The machines can provide elevated access for:

• Lighting installation

• Lighting replacement

• High-level electrical work

• Facility inspection

• Outdoor lighting maintenance

• Building lighting projects

6. Construction and Installation

The high working height makes the machines suitable for various construction-related applications, including:

• Equipment installation

• Structural inspection

• Building finishing

• High-level installation

• Exterior construction work

• Maintenance during construction

7. Commercial and Public Buildings

For suitable sites, the electric spider lift can be used for:

• Hotel maintenance

• Shopping center maintenance

• Public building maintenance

• Lighting maintenance

• Sign installation

• High-level facility inspection

The electric drive can be advantageous in suitable noise-sensitive environments.

Why Choose an Electric Spider Aerial Work Platform?

21m–27m High Working Height

Three working height options cover a wide range of high-level applications.

Pure Electric Operation

The electric drive provides low-noise operation and zero direct emissions during operation.

High-Efficiency AC Motor

The AC motor provides strong torque, efficient operation and long service life.

Large-Capacity Battery

48V/310Ah and 48V/320Ah battery configurations provide substantial onboard energy capacity.

Ultra-Narrow Tracked Design

The 1.1m-wide crawler chassis provides flexible access compared with larger aerial platforms.

Dual-Section Telescopic Tower Boom

The two-section telescopic boom provides high vertical access and flexible positioning.

Automatic Outrigger Leveling

Automatic leveling helps simplify setup and establish a stable working configuration.

Wireless Remote Control

Remote operation provides flexibility and a clear operating view.

Precise Proportional Hydraulic Control

Smooth hydraulic movement allows accurate platform positioning.

Multiple Safety Systems

Emergency lowering, emergency stop, automatic braking, tilt protection and fault diagnosis provide additional operational support.

Electric Spider Lift FAQ

1. What is an electric spider aerial work platform?

An electric spider aerial work platform is a tracked aerial lift designed for elevated work and powered by an electric drive system.

The spider configuration combines a crawler chassis, outriggers and a high-reaching boom to provide flexible access and stable operation.

2. What working heights are available?

This series includes:

• THZ-21E-Li: 21m

• THZ-24E-Li: 24m

• THZ-27E-Li: 27m

3. What is the rated load capacity?

All three models have a rated load capacity of 230kg.

4. What is the width of the machine?

The overall width is 1.1m for all three models.

5. Is the spider lift fully electric?

Yes.

The THZ-21E-Li, THZ-24E-Li and THZ-27E-Li use a pure electric drive configuration.

6. What type of motor does the machine use?

The machine uses an AC motor drive system.

The AC motor is designed to provide high efficiency, strong torque and long service life.

7. What battery does the machine use?

The battery configurations are:

• THZ-21E-Li: 48V/310Ah

• THZ-24E-Li: 48V/320Ah

• THZ-27E-Li: 48V/320Ah

8. Does the machine produce emissions?

The electric drive system produces zero direct emissions during operation.

However, the environmental impact of operation also depends on how the electricity used to charge the battery is generated.

9. Is the electric spider lift suitable for indoor use?

It can be suitable for indoor applications where site conditions permit.

Before indoor operation, confirm:

• Door and entrance width

• Floor load capacity

• Ceiling height

• Ground condition

• Machine operating space

• Required ventilation and safety conditions

• Whether the machine dimensions are suitable for the site

10. Does the machine use rubber tracks?

Yes.

The machine uses rubber crawler tracks for flexible movement on suitable surfaces.

11. Can the spider lift work on uneven ground?

The tracked chassis and automatic outrigger system provide flexibility for suitable outdoor terrain.

However, the actual ground bearing capacity, slope, leveling requirements and site conditions must be checked before operation.

12. Does the machine have automatic leveling?

Yes.

The machine is equipped with an automatic outrigger leveling system.

13. How is the machine controlled?

The machine uses wireless remote control combined with a proportional hydraulic control system.

14. What is the maximum travel speed?

The maximum travel speed in the specified folded configuration is 4km/h.

15. What is the maximum gradeability?

The maximum gradeability is 30%.

Actual operation must comply with the manufacturer's operating requirements and site safety conditions.

16. What is the turntable rotation range?

The turntable provides ±355° non-continuous rotation.

17. What is the platform rotation range?

The working platform provides ±90° rotation.

18. What is the difference between the 21m, 24m and 27m models?

The main difference is maximum working height.

• THZ-21E-Li: 21m

• THZ-24E-Li: 24m

• THZ-27E-Li: 27m

Machine weight and battery capacity also vary between the models.

19. Which model should I choose?

Choose the model based primarily on your required working height.

If 21m is sufficient, the THZ-21E-Li provides the lower-height option.

If you need approximately 24m, choose the THZ-24E-Li.

If your project requires up to 27m, the THZ-27E-Li provides the highest working height in this series.

You should also consider access width, ground conditions, transportation requirements and the actual working environment.

Get a Quote for a 21m, 24m or 27m Electric Spider Lift

Looking for a high-reach Electric Spider Aerial Work Platform?

The THZ-21E-Li, THZ-24E-Li and THZ-27E-Li combine:

21m/24m/27m Working Height + Pure Electric Drive + AC Motor + Rubber Tracks + Dual-Section Telescopic Tower Boom + Automatic Leveling + Wireless Remote Control

These electric spider lifts provide a flexible solution for construction, building maintenance, tree care, glass installation, industrial maintenance and other elevated work applications.

Contact Us for More Information

Please send us:

• Required working height

• Application

• Indoor or outdoor use

• Minimum access width

• Ground conditions

• Required quantity

• Destination country or port

We can provide:

• Product specifications

• Technical drawings

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• Product quotation

• Model recommendation

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• Configuration options

Tell us your required working height and application, and we will recommend the right 21m, 24m or 27m electric spider aerial work platform for your project.