Introduction

When purchasing pedestrian passage turnstiles , most buyers first focus on the appearance , stainless steel thickness , or identification methods ( facial recognition , QR code , card swiping , etc . ) . These factors are certainly important , but what truly determines whether a turnstile remains stable after one year of operation , whether it frequently needs repairs , or whether users complain about “ jerky motion ” or “ loud noise ” is often hidden inside the body – the motor and its drive control system .

Once a motor is incorrectly selected , the consequences are not just a single faulty turnstile but a series of maintenance work orders , customer complaints , and hidden costs . Based on field data from multiple domestic and international projects , this article compares the three mainstream motor solutions from an engineering application perspective , helping you make a more informed decision for different scenarios .

Why the Motor Directly Determines the Turnstile’s Lifespan and User Experience

According to after-sales statistics from nearly one hundred turnstile projects :

About 65 % of turnstile failures originate from the motion system , and motor and drive related issues account for more than 55 % of those failures .

This means : choosing the wrong motor is equivalent to planting a time bomb of faults in your project .

Typical symptoms : the newly installed turnstile runs smoothly for the first six months , but after one to two years , problems such as delayed opening , abnormal noise , pinching , and reset failures begin to appear .

 The root cause is not the appearance or material , but a mismatch between the motor type and control strategy and the actual passage intensity at the site .

Comparison of Three Mainstream Turnstile Motor Solutions

Currently , pedestrian passage turnstiles on the market mainly use the following three motor 

types :

Key Insights

Brushed motor : Low price , suitable for low frequency or temporary projects . Carbon brushes wear out quickly , so long term maintenance costs are not low .

Brushless DC motor : The current mainstream choice . Its lifespan and quietness are significantly better than brushed motors , meeting the needs of most commercial scenarios .

Servo motor : The performance ceiling . Extremely fast , quiet , precise , and safe . Ideal for high end venues or high density pedestrian flow .

Quantitative Differences in Passage Efficiency and User Experience

1 . Impact of Opening Speed on Queuing

Assume that 2 , 000 people need to pass during the morning peak hour ( one hour ) :

Brushed / Brushless ( 0 . 6 sec opening ) → theoretical throughput about 25 to 30 people per minute → queues are very likely to form .

Servo ( 0 . 3 sec opening ) → theoretical throughput about 40 to 45 people per minute → almost no waiting .

Conclusion : In high traffic scenarios such as office buildings , subways , and sports stadiums , the efficiency improvement brought by servo motors can tangibly reduce congestion complaints .

2 . Acceleration and Deceleration Control ( Start / Stop Smoothness )

Brushed motor : No acceleration / deceleration control → the swing arm / wing plate starts and stops abruptly , with noticeable impact .

Brushless motor : Features trapezoidal acceleration / deceleration → generally smooth , but slight jerkiness may still occur during high speed transitions .

Servo motor : S-curve acceleration / deceleration → perfectly linear motion , passage feels like flowing water .

In scenarios with heavy pedestrian flow including the elderly and children ( e . g . , scenic spots , hospitals ) , smoothness directly affects anti-pinch safety and passage comfort .

3 . Noise Control

Commercial and office environments are sensitive to noise :

Brushed motor : exceeds 70 dB , long term operation easily leads to complaints .

Brushless motor : 50 to 65 dB , acceptable .

Servo motor : < 50 dB , nearly silent .

In high end hotels , financial institutions , and Grade A office buildings , quiet operation is an invisible but essential requirement .

Impact of Different Motor Solutions on Safety

Anti-pinch Response Time

The millisecond level response of a servo motor minimises the risk of pinching injuries , especially suitable for children ‘ s playgrounds , schools , and nursing homes .

Torque Control ( Resistance to Forced Break-in )

When someone forcibly pushes against the gate :

Brushed motor : No active torque control → mechanical structure is easily damaged .

Brushless motor : Overload protection threshold can be set → provides some buffering .

Servo motor : Real time dynamic torque adjustment → immediately reverses and releases upon obstruction , offering strong impact resistance .

Power Failure Protection

All compliant turnstiles must support automatic unlocking on power failure . However , the reliability and speed of unlocking vary with different motor solutions . Servo motors , relying on built-in encoders , can quickly return to a safe position after power loss , making the opening action smoother .

Recommended Motor Selection by Application Scenario

A Common Misconception

When the budget is sufficient , blindly choosing servo motors ; when the budget is tight , using brushed motors everywhere . The truly professional approach is to make precise matching based on the daily passage volume per lane , expected service life , and environmental noise requirements .

Conclusion : Do Not Let the Motor Become the Weak Point of Your Project

One or two years after installation , users do not remember how beautiful the turnstile looked , but rather “ does it often break down ” , “ is it fast enough to pass ” , and “ does it pinch people ” . These impressions are all determined by the motor and its control system .

Low frequency , temporary use → a brushed motor will suffice .

Regular commercial projects → a brushless DC motor is the safe choice .

High traffic , high image , high safety requirements → choose a servo motor directly .

Choosing the wrong motor saves you a few hundred yuan , but leads to years of skyrocketing maintenance costs and declining customer satisfaction . Choose the right motor , and your turnstile will become a long term reliable security asset for your project .

Need help selecting the right motor for your turnstile project ?

We offer :

Passenger flow data analysis : recommend motor solutions based on estimated pedestrian volume .

Motor life simulation : actual test data under different operating conditions .

Full integration of turnstile + motor + control system .

Whether you are a contractor , system integrator , or end user , we can provide a customised passage turnstile solution for you .

Contact us today for motor selection advice and a quotation for your project .

Your turnstile ‘ s stable operation starts with the correct motor choice .