Geared vs. Gearless Traction Machines: Which Is Right for Your Building?
Updated: 6 days ago
When planning an elevator modernization, one of the most consequential decisions is whether a geared or gearless traction machine is the right fit for your building.
Both systems are widely used in commercial buildings, but they differ meaningfully in how they operate, what they cost to maintain, and how they perform over time. Understanding those differences—ideally with guidance from a proven partner like Metro Elevator—helps building owners make smarter decisions that support long-term reliability, efficiency, and budget goals.
How Traction Elevators Work
Traction elevators are the standard system for mid-rise and high-rise commercial buildings. Unlike hydraulic elevators, which rely on fluid pressure, traction systems use steel ropes or belts and a drive sheave to raise and lower the cab. The result is faster speeds, smoother operation, and better energy efficiency—making traction systems the preferred choice for office buildings, hotels, hospitals, and other high-traffic facilities.
The key distinction between traction systems comes down to how the machine drives the sheave: geared or gearless.
Geared Traction Machines
Geared traction machines use an electric motor connected to a gearbox, which reduces motor speed while increasing torque to move the elevator. This design has proven reliable for decades and remains a practical option for many buildings—particularly where speed demands are lower, and upfront budget is a primary concern.
Geared systems typically operate at 200-500 feet per minute, making them well-suited for shorter travel distances and moderate usage.
Geared machines also hold a distinct advantage in high-loading applications. Their gearbox delivers substantial torque, making them well suited for low-rise buildings that carry heavy loads—situations where installing a gearless machine wouldn’t be a cost-effective solution.
Because the motor and ropes are directly connected through the gearbox, geared systems require a separate, independent means of protecting against ascending or unintended car movement—such as a rope brake or sheave jammer. This dedicated device works alongside the machine brake to safely arrest the car if unintended movement occurs.
Best Fit For:
Low- to mid-rise buildings
Moderate traffic environments
High-loading applications, particularly in low-rise buildings
Modernization projects with tighter upfront budgets
Key Considerations:
More mechanical components mean more routine maintenance
Gearbox oil must be monitored and changed regularly
Wear on gears and bearings can increase noise and vibration over time
Requires an independent emergency braking device (rope brake/sheave jammer) to protect against ascending or unintended car movement
Gearless Traction Machines
Gearless traction machines eliminate the gearbox entirely, connecting the motor directly to the drive sheave. With fewer moving parts and no gearbox friction, gearless systems deliver smoother performance, better efficiency, and lower long-term maintenance demands. They typically require a higher initial investment, but for buildings where performance and lifecycle value matter most, that investment often pays off.
Gearless systems typically operate at 500-2,000 feet per minute—roughly 6 to 23 miles per hour—ideal for taller buildings where travel speed directly affects tenant experience. Many modern gearless systems use permanent magnet motors, which can reduce energy consumption by 30-50% compared to older geared equipment.
Gearless machines also support higher acceleration and deceleration rates, which can shorten floor-to-floor times and reduce overall passenger time to destination—an advantage that adds up in taller, high-traffic buildings.
Over the life of the equipment, gearless machines tend to have a longer lifecycle and are typically easier to rebuild and repair to factory condition using specialized tooling and technicians, supporting long-term reliability and consistent performance.
Gearless systems typically include a standard dual-brake system as part of the machine itself, which meets emergency braking requirements without the need for a separate rope brake or sheave jammer.
Best Fit For:
Mid-rise to high-rise buildings
High-traffic properties
Buildings focused on long-term efficiency and ride quality
Key Considerations:
Higher initial capital investment
More advanced controls and equipment
Standard dual-brake system supports emergency braking without added equipment
Strong long-term value through lower energy and service costs, longer equipment lifecycle, and easier factory-condition rebuilds
Side-by-Side Comparison
Factor | Geared Traction | Gearless Traction |
Speed | 200-500 ft/min | 500-2,000+ ft/min (approx. 23 mph) |
Ride Quality | Reliable; more noise/vibration with age | Smooth, quiet, consistent |
Acceleration/Deceleration | Standard rates | Higher rates; can reduce floor-to-floor and passenger travel time |
Best Fit | Low- to mid-rise, moderate traffic; high-loading, low-rise applications | Mid- to high-rise, high traffic |
Maintenance | More frequent; gearbox and lubrication | Fewer components; less routine service |
Emergency Braking | Requires independent rope brake/sheave jammer for ascending/unintended movement | Standard dual-brake system typically built in |
Energy Use | Higher operating costs | Up to 30-50% more efficient* |
Upfront Cost | Lower | Higher |
Long-Term Value | Higher operating costs over time | Lower total cost of ownership; longer lifecycle and easier factory-condition rebuilds |
*Compared to older geared systems; actual savings vary by building usage and equipment age.
Upfront Cost vs. Long-Term Value
Geared systems typically cost less upfront, which can make them attractive for buildings with tighter capital budgets or lower usage demands. However, that lower initial investment often comes with higher long-term operating costs due to more frequent maintenance, additional wear components, and lower energy efficiency. That said, geared machines can be the more cost-effective choice in high-loading, low-rise applications, where the torque advantage they offer outweighs the long-term efficiency benefits of a gearless system.
Gearless systems require a larger initial investment but generally deliver lower total cost of ownership. Fewer service needs, reduced downtime, lower energy consumption, and longer equipment lifecycle can generate meaningful savings over the life of the equipment—particularly in buildings with frequent elevator use. For a closer look at what unplanned outages can cost your building, see our breakdown of what elevator downtime is really costing you.
Choosing the Right System for Your Building
The right choice depends on how your building operates today and how you want it to perform over time.
A geared machine may make sense if:
Your building is low-rise
Elevator traffic is light to moderate, or your building has high-loading demands
Lower upfront cost is the top priority
A gearless machine may be the better fit if:
Your building is mid- or high-rise
Elevators run frequently throughout the day
Ride quality, energy efficiency, passenger travel time, and long-term savings are priorities
Building height, traffic patterns, tenant expectations, and operational goals should all factor into the decision. A thorough assessment from Metro Elevator can help clarify which option best supports your building’s needs—and what a realistic modernization path looks like.
Why Modernization Is the Right Time to Reevaluate
If your building is planning an elevator modernization, this is the ideal moment to assess whether your current system still aligns with your needs. Modernization is more than replacing equipment — it's an opportunity to improve performance, reliability, energy efficiency, code compliance, and overall passenger experience.
Not sure if your system has reached that point yet? These 7 signs your elevator needs repair can help you recognize when isolated issues are starting to signal a bigger need for change. And if you're weighing whether to repair or modernize altogether, our guide on repair vs. modernization walks through how to make that call with confidence.
In many cases, upgrading the machine is just one part of the equation. Controllers, door equipment, fixtures, and emergency communication systems should also be evaluated as part of a complete modernization strategy — something the Metro Elevator team helps building owners plan and execute regularly. For buildings undergoing larger transitions, such as commercial-to-residential conversions, a full system review is especially important.
Modernization May Require More Than a Machine Swap
While many building owners choose to upgrade from a geared to a gearless traction machine, the transition isn't always as simple as replacing one machine with another. Every modernization must comply with current safety codes and account for the existing elevator system's design.
One important consideration is the elevator's overall system weight. ASME A17.1-2022, Section 2.9 limits increases to the total weight of the elevator system during modernization to no more than 5% without additional modifications. Because gearless machines often weigh more than older geared machines (and are typically designed around a different counterweight balance) a modernization can sometimes exceed this allowable increase if not carefully engineered.
This is one of many reasons why a detailed evaluation is essential before selecting new equipment. An experienced modernization team can assess the existing system, identify potential code compliance challenges early, and develop a solution that delivers the benefits of a gearless machine while meeting applicable safety requirements.
Ready to Evaluate Your Options?
Both geared and gearless traction machines have their place, and the right choice depends on your building’s size, usage, and long-term priorities.
Geared systems can be cost-effective for lower-rise buildings with moderate traffic. For many mid-rise and high-rise properties, gearless machines offer stronger long-term value through better performance, improved efficiency, and lower lifecycle costs.
Metro Elevator works with building owners and facility managers to assess existing equipment, identify practical upgrade paths, evaluate code requirements, and develop modernization strategies built around long-term reliability, compliance, and performance.
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Brian Heffner is the Vice President of Modernization for Metro Elevator DC, bringing nearly three decades of industry experience to his role. Learn more about Brian and our DC Division.
