A Smith machine bar typically weighs between 15 to 20 kilograms (33 to 44 pounds) on average, though this can vary depending on the manufacturer, model, and whether the machine uses a counterbalance system

. Some bars are lighter, around 15 kg (33 lbs), suitable for beginners or those focusing on technique, while others can be heavier, up to 20 kg (44 lbs), catering to more advanced lifters

. Counterbalanced Smith machines have a mechanism that reduces the felt weight of the bar, making it feel lighter than its actual mass. For example, a 20 kg bar with counterbalances might only feel like lifting 12 kg due to the counterbalance weights pulling against it

. Because of this, the effective weight you lift can be less than the bar's physical weight. Different brands and models show some variation:

• Technogym Smith machine bars weigh around 9.1 kg (20 lbs), calibrated for a balanced lifting experience

• Some Smith machine bars can weigh as little as 6 lbs or as much as 45 lbs depending on design and counterbalancing

• Planet Fitness Smith machine bars generally weigh between 15 and 25 pounds (6.8 to 11.3 kg)

In summary, Smith machine bars usually weigh between 15 and 20 kg (33 to 44 lbs), but counterbalance systems and specific models can make the effective lifting weight feel lighter, sometimes as low as 5 to 12 kg (11 to 26 lbs)

. If precise weight tracking is needed, it’s best to check the specific machine or weigh the bar directly.