Space-Saving The Machine Room Less Elevator for Your Building Design and Performance

A Machine Roomless (MRL) Elevator is a modern elevator design that eliminates the need for a separate machine room, integrating all drive and control components within the elevator shaft. This innovation optimizes building space, reduces construction costs, and improves energy efficiency while maintaining performance comparable to traditional traction elevators. MRL elevators are widely used in mid-rise buildings (up to 20 stories) and are a popular choice for both commercial and residential applications.

Key Components

1. Traction Machine (Hoist Motor): A compact, gearless or geared motor mounted in the hoistway, driving the elevator via a sheave and steel ropes.

2. Control System: Embedded in the shaft or a small cabinet, managing movement, door operation, and safety functions.

3. Guiding Rails & Counterweight: Ensures smooth vertical travel while balancing the elevator car’s load.

4. Emergency Braking & Safety Devices: Includes overspeed governors, buffers, and electromagnetic brakes.

5. Door Operator: Integrated into the car for automatic opening and closing.

6. Power Supply & Backup: Often equipped with battery-operated rescue systems for power outages.

Working Principle

• The gearless or geared traction motor moves the elevator car by rotating the sheave, which winds or unwinds the suspension ropes.

• A counterweight balances the load, reducing energy consumption.

• The control system processes signals from sensors, ensuring precise floor alignment and smooth acceleration/deceleration.

• In emergencies, brakes and safety gears engage to halt the elevator safely.

Advantages

• Space-Saving: No machine room maximizes usable building area.

• Energy Efficiency: Gearless motors consume less power than hydraulic systems.

• Lower Installation Costs: Reduced structural modifications compared to conventional elevators.

• Quiet & Smooth Operation: Advanced motor control minimizes noise and vibration.

• Eco-Friendly: Regenerative drives can feed excess energy back into the building’s power grid.

Disadvantages

• Higher Initial Cost: More expensive than hydraulic elevators for low-rise applications.

• Maintenance Complexity: Requires skilled technicians due to integrated components.

• Height Limitations: Less suitable for very high-rise buildings (typically capped at ~20 floors).

STANDARD FUNCTIONS

FAQ
1. Are the elevator wire ropes durable?
The elevator wire rope has special provisions and requirements. Configuration is not only for wire rope and rated load, but also considered the size of the traction, as a result, the tensile strength of wire rope is greater than the weight of the lift. The safety factor is equipped with more than four wire rope. So it won’t break at the same time.
2. Is it dangerous for power failure suddenly during the elevator running?
If it occurs, the elevator will automatically stop due to the electrical and mechanical safety device. In case of power failure,elevator brakes will automatically taken. In addition, the power supply departments such as planned outage, prior notice are also operating.
3. Will us be hurt when it closed suddenly?
In the closing process, if people touch the hall door, the door of elevator will automatically restart without any danger. With anti clamping switch, once the gate touched, this switching action make the elevator unable to be closed and even reopened. In addition, closing force is also available here.
4. How the elevator running?
Elevators are operated with a counterweight wire rope through the (tractor) traction drive, making ups and downs on the guide rail.
5. Is the escalator installation complicated?
We believe the functions of an escalator are not necessarily proportional to the operation complexity. Therefore, escalators designed by us apply an integrated structure, so that the equipment is more precise and more efficient and allows easier and more convenient commissioning.
6. Do you have any cerifications?
Yes, we do with ISO9001 / CCC / CE Certificates for u.

SUNNY Elevator is always engaged in researching into, developing, manufacturing various building traffic and transport systems such as elevator, escalator, moving walk etc. Through the centurial trials and hardships, SUNNY Elevator never changes its advanced technology.

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As a distinguished figure in the contemporary elevator industry, SUNNY Elevator witnesses the past and strides forwards a bright future. It connects classical German art with the advanced modern technology. It links the western european buildings with the eastern chinese style buildings.

From now on, space talks to light, aesthetics combines with high tech. Grace integrates with comfortable operation. It wholeheartedly creates a smooth urban sight line. It starts a big vision of SUNNY brand.

As a professional “one-stop” elevator and escalator solution plan supplier, Shanghai SUNNY elevator Co.,Ltd. intergrates the elevator research, development, design, manufacture, sales, installation, repair, maintenance, transformation into one.

SUNNY Elevator is located in the most economically prosperous Changjiang River Delta Economic Zone(Jiading District, Shanghai, China). It owns 20,000 square meters of modern factory zones in Jiangqiao Industrial Zone, Jiading District, Shanghai, China. Total investment is 50 million RMB. It builds up 80m high elevator test tower, 7 elevator test wells. It can annually produce 5,000 sets of various elevators and escalators.

SUNNY Elevator inherits the outstanding German manufacture technology. It introuces the advanced internation manufacture installations, combines with pioneer German elevator design concept. The first-class R&D, design, production, site service groups bring about the secure, reliable, outstanding elevators and escalators for vast clients.

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