The performance of rotary hammers is a critical aspect that sets them apart from other power tools. Their ability to deliver consistent and powerful results is a testament to their engineering and design.

Rotary hammers are known for their power and torque. These tools are equipped with powerful motors that provide the necessary force to drill into hard materials and drive in nails or screws with ease. The torque is adjustable in many models, allowing users to match the tool's performance to the specific requirements of the task at hand.

The chuck and bit system of rotary hammers is another aspect of their performance. These tools typically feature a keyless chuck that allows for quick and easy bit changes. This feature is crucial for maintaining efficiency on the job site, as it reduces downtime.

Performance also includes the control of vibrations, which can be a significant factor in user comfort and tool longevity. Many rotary hammers come with advanced vibration control systems that reduce the impact of vibrations on the user's hands and arms, leading to less fatigue and a more comfortable working experience.

Some rotary hammers are equipped with dust ejection systems that help keep the work area clean and the tool's performance well. These systems help to clear dust and debris from the drilling area, which can prevent the tool from overheating and ensure that the drill bit remains sharp and effective.

Lastly, the energy efficiency of rotary hammers is an important performance feature. Modern models are designed to consume less energy while maintaining high performance, which not only saves on battery life for cordless models but also reduces the environmental impact of their use.