XSTO Wheelchair King Certified Edition WC CT420 [Crawler Type – Automatic Gravity Balance Heavy-Duty Cargo Special Stair Climber] (Can handle spiral staircases. Wired remote control operation. Maximum load capacity 420kg)
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XSTO heavy-duty stair climbing machine WC CT420, with a load capacity of up to 420 kg, can be easily operated by one person to go up and down stairs. With the automatic adjustment of the center of gravity function, it can maintain balance during climbing; at the same time, it can also move easily in flat ground mode, making transportation safer and more convenient. Suitable for transporting precision instruments, vending machines, pianos, large safes, gas cylinders, building materials, engines and security equipment, etc.
Application scope
Suitable for transporting heavy and expensive commercial equipment such as vending machines, photocopiers, etc.
Model WC CT420 has been discontinued, please refer to the upgraded model WC CT420C for better performance and functions!
![[Wheelchair King] XSTO WC CT420S stair climbing trolley has mechanical pedals and handles, and has a maximum load-bearing capacity of 420 kg. Designed for heavy-duty stair transport, this sturdy unit comes with a wired remote control for ease of use. .](https://www.wheelchair.com.hk/wp-content/uploads/2025/03/Thumbnail-WCCT420.webp)

01) Integrated wired controller – Function integration, remote wired control
02) Adjustable handle – Extend to adjust height, swivel to adjust tilt angle
03) Mobile crossbar – free installation, height adjustable
04) Battery Pack – Plug and Play, Environmentally Friendly
05) Tracks – Anti-slip, no traces left
06) Motor housing – Waterproof and enclosed housing to protect the motor
07) Handle – Retractable, made of aluminum alloy
08) Loading plate – height adjustable
09) Support wheels – retractable design, can be moved flexibly in all directions

armrest
![[Wheelchair King] The blue battery pack is embedded in the metal frame of the XSTO WC CT420S [Crawler-Type - Automatic Gravity-Balanced Heavy-Duty Cargo Special Stair Climber] and is equipped with a top handle for seamless operation. This power unit comes with a wired remote control and has a maximum load capacity of 420 kg. .](https://www.wheelchair.com.hk/wp-content/uploads/2025/03/battery-3-%E6%8B%B7%E8%B2%9D.webp)
Power Input

track

joystick
![[Wheelchair King] XSTO WC CT420S [Crawler-type - Automatic Gravity Balance Heavy-duty Cargo Special Stair Climber] can easily operate the crawler to transport large boxes up the stairs. It can be precisely controlled using a wired remote control and can withstand loads of up to 420 kg. .](https://www.wheelchair.com.hk/wp-content/uploads/2025/03/self-balance-1-%E6%8B%B7%E8%B2%9D.webp)
Self-Balance

With fixed beam

Sturdy frame

Universal wheel

![[Wheelchair King] A person uses an XSTO WC CT420S stair climbing trolley equipped with a wired remote control to move a photocopier down the stairs. Designed for loads up to 420 kg, this heavy-duty model features an automatic gravity-balancing system for smooth transport. .](https://www.wheelchair.com.hk/wp-content/uploads/2025/03/CT420-Operation-2-%E6%8B%B7%E8%B2%9D.webp)
![[Wheelchair King] A person is skillfully operating the XSTO WC CT420S [Crawler-type - Automatic Gravity-balanced Heavy-duty Cargo Special Stair Climber] with a wired remote control, effortlessly unloading large items from the rear of the vehicle, demonstrating its powerful 420 kg maximum load capacity. .](https://www.wheelchair.com.hk/wp-content/uploads/2025/03/CT420-Operation-3-%E6%8B%B7%E8%B2%9D.webp)
![[Wheelchair King] A man skillfully operates the XSTO WC CT420S stair climbing machine, using its automatic gravity balance and wired remote control to move a large vending machine down from the steps outside a building. This heavy-duty equipment can easily carry up to 420 kg. .](https://www.wheelchair.com.hk/wp-content/uploads/2025/03/CT420-Operation-1.webp)
model | WC CT420 |
---|---|
Product weight | 94 kg |
Maximum load capacity | 420 kg |
Battery capacity | 78-106 steps |
Stair climbing speed | 10 steps/minute |
Downstairs speed | 16 steps/minute |
Motor type | DC motor |
Noise volume | <70 dB |
Protection level | IP54 |
Stair requirements | Height <21CM, tilt angle ≤37° |
Step Specification | 1500*1500mm |
Optional device

Photocopier ramp

Electric Mini Lift
![The [Wheelchair King] XSTO WC CT420S [Crawler-type - Automatic Gravity-balanced Heavy-duty Cargo Special Stair Climber] has a folding ramp with wheels next to it. It uses a wired remote control to easily unload a large box from the truck, demonstrating its impressive 420 kg maximum load capacity. .](https://www.wheelchair.com.hk/wp-content/uploads/2025/03/Ramp-%E6%8B%B7%E8%B2%9D-1.webp)
Slope
![[Wheelchair King] A Dual Climber [2-in-1 wheelchair stair climber] is placed near the marked path at the bottom of the stairs, highlighting the challenges of accessibility. .](https://www.wheelchair.com.hk/wp-content/uploads/2025/02/718e3e7c-7ed7-4039-94db-a3d3e657c637.webp)
We simulate tests in real stair environments and verify the performance of stair climbers to ensure they are perfectly matched to different usage scenarios. From home to commercial use, rigorous verification gives you peace of mind!
All pictures and data are for reference only, and the actual product shall prevail.
The following is a sharing of customers’ personal experiences:
A customer had no knowledge of stair climbing machines.Bought an electric stair climbing machine online. Unfortunately, a serious accident occurred. When the customer was operating the stair climber to help his mother go down the stairs, the machine suddenly became uncontrollable, causing both the person and the machine to roll down the stairs.

As a result of the accident, the elderly man suffered multiple fractures and required multiple surgeries and a long time to recover.
So when we choose an electric stair lift, we must consider the hardware andsoftware factors, andwhetherLicensed goods,Authorized agentAndtraining staff, you can buy with confidence.
Wheelchair King Exclusive Agency Authorization Letter

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Wheelchair King has ten unique stair machines with complete functions.
Flexible to adapt to various environments and needs.

Crawler stair machine

Wheelchair-adjustable crawler stair climber

Electric escape chair

Entry-level crawler

Manual escape chair

High-end pole-type stair climber

Entry-level pole stair climber

2 in 1 stair climber

170kg cargo stair climber

400kg cargo stair climber
![[Wheelchair King] A Dual Climber [2-in-1 wheelchair stair climber] is placed near the marked path at the bottom of the stairs, highlighting the challenges of accessibility. .](https://www.wheelchair.com.hk/wp-content/uploads/2025/02/718e3e7c-7ed7-4039-94db-a3d3e657c637.webp)
We simulate tests in real stair environments and verify the performance of stair climbers to ensure they are perfectly matched to different usage scenarios. From home to commercial use, rigorous verification gives you peace of mind!