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This article was written by one of our qualified writers, and fact-checked by our experts. The numbers in parentheses (e.g. 1, 2, 3, etc.) throughout the article, are reference links to peer-reviewed studies.
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How Much Does a Smith Machine Bar Weigh? — Explained

Learn everything there is to learn about the Smith machine bar.

Vidur Saini

Written by Vidur Saini

Last Updated onApril 21, 2022

Smith Machine Bar Weight

Smith Machine Bar Weight

In This Article
  • Problems with Smith Machine
  • Smith Machine Bar Weigh
  • Smith Bar Weight Factors
  • Types of Smith Machines
  • Bar Weights of Different Smith Machines
  • How To Measure A Smith Machine Bar Weight
  • FAQs
  • Wrapping Up

A Smith machine is one of the most common resistance training equipment found in gyms around the world. It consists of a barbell fixed within steel rails, allowing only vertical or near-vertical movement. 

A Smith bar has two hooks, one on each side, allowing you to lock the bar in place on a series of lockout points. A Smith machine is used by beginner, intermediate, and advanced lifters alike. 

It is one of the most effective training equipment. However, it routinely gets flake from the hardcore strength sports community for being a machine generally used by weak and lazy lifters. But why does the Smith machine get so much hate, you ask?

Unlike Olympic barbells, Smith machines come in various shapes and sizes. But before we get into the nitty-gritty of how much a smith machine bar weighs, let’s talk a little about the machine, shall we? 

Have you ever wondered why the versatile training equipment is called a “Smith” machine and how it came to being?

An American fitness and nutrition guru, Jack LaLanne, in the 1950s invented the original model of what became the Smith machine. He rigged up a sliding apparatus in his gym in the 1950s. LaLanne also designed the first leg extension machines, pulley machines using cables, and weight selectors that are now standard in the fitness industry.

Rudy Smith spotted LaLanne’s ingenious invention and commissioned Paul Martin to improve it. Smith installed the new and improved model in a gym he was managing — Vic Tanny’s gym in Los Angeles, CA. By the late 1950s, Smith became an executive in Tanny’s chain of gyms, and the Smith machine was being manufactured and sold in gyms around America.

Related: Dumbbells, Barbells, Or Smith Machines For Maximum Muscle?

Why are Lifters Critical of the Smith Machine?

Smith Machine

Although the Smith machine is just a barbell attached to a safety rail system which makes lifting safer, it gets a bad rap for three main reasons. First, since the Smith machine is attached to a rail on either side, it alters a lifter’s natural movement pattern by limiting forward-backward movement and controlling the bar for them. Studies have also shown that free weights can be more beneficial for strength and muscle building than a Smith machine. [1]

Plus, while lifting heavy on a Smith machine, a slight mistake can put unnecessary tension on your joints, putting you at risk of an injury. 

Secondly, free weights like the barbell and dumbbells have an element of risk attached to them. Lifting extremely heavy using a barbell is like riding a rollercoaster without a seatbelt — you could get hurt, but for most lifters, the thrill is well worth it. 

On the other hand, a Smith machine acts as your personal spotter. While it is one of the biggest benefits of using the machine, especially for people who train alone, it also brings backlash.  

The Smith machine bar is attached to a rail system and has pegs every couple of inches where you can lock the bar in place and get out safely in case you fail during a rep. 

Finally, most Smith machines come with a counterbalance — meaning the machine helps you in the concentric part of the lift. Additionally, the counterbalance and ultimately the Smith bar weight can vary depending on the manufacturer and model of the equipment. 

Three 45-pound weight plates on each end of a Smith machine bar sleeve do not necessarily equal 315 pounds. Unlike the seven feet 45-pound Olympic barbells, some Smith machine bars (with counterbalance weights and angled motion) can weigh between six to 52 pounds.  

Check Out: Free Weight Barbell Squat Vs. Smith Machine Squat: Which Is Better For Gains?

How Much Does a Smith Machine Bar Weigh?

The Smith machine bars can weight somewhere between 7lbs – 30lbs depending on the material type, counterbalancing, construction, and the angle of the rails.

By now, you probably know the answer to the above question isn’t simple. To figure out how much the Smith machine bar at your gym weighs, you need to assess the mechanics of the machine. 

In this article, you will find the bar weights of some of the most common Smith machines used in commercial and home gyms and also a way to reliably weigh the Smith bar you have access to at your home or gym. 

Tip: If you’re unsure about the weight of your Smith bar, you should begin by checking for a label on the machine, as many brands label the weight of the bar on the side of the equipment. Nonetheless, you will find the bar weight of most big-name Smith machine brands on this list. 

Smith Machine Bar Weigh

Related: Barbell Weights: Learn How Much Barbells Weigh

Factors Affecting Smith Bar Weight

The following factors contribute to a bar’s weight:

1. Bar Material

Smith bars are made with a different type of steel compared to the Olympic barbells. Olympic barbells are designed and built using high-strength (and heavy) steel as they have to handle extremely heavy weights and need to have a whip (flex) to them. 

Smith bars are a different ball game altogether. The steel rails, bearings, clamps, and slides reduce direct stress placed on the Smith bar. It also reduces the need for the bar to be as heavy as Olympic barbells.

Although a Smith machine bar does not have the same tensile strength as an Olympic barbell, it can generally handle the same weights as the conventional bar. Most commercial Smith machines have a 600-1000-pound max capacity, which is right on par with Olympic barbells.

When it comes to the length of the bars, most Smith bars have the same seven feet length as their Olympic counterparts. However, the diameter of the bars can vary depending on their utility. 

While most Olympic and Smith bars have two-inch sleeves, some less-expensive residential-style Smith machines have one-inch sleeves. Notably, some Smith machines use an Olympic barbell. 

Lunges On Smith Machine

2. Counterbalance

Some Smith machines use counterbalances, meaning even if the weight of the Smith bar is 40 pounds, the counterbalance mechanism will set off some of it. 

Most fancy gym chains use a counterbalanced Smith machine. On the other hand, more budget-friendly home gym Smith machines usually don’t have a counterbalance. 

What is a counterbalance, and how does it work?

A Smith machine counterbalance works like a balancing scale. The bar is on one side of the machine, and the weights are on the other (generally concealed). 

The Smith bar always weighs more than the counterweight. For example, if the bar weighs 40 pounds, the set of weights on the other end will weigh 20. This makes the bar feel lighter, especially on the concentric part of the movement — the upward movement while returning to the starting position during a squat. 

To experience the phenomenon, try squatting or bench pressing with an empty Smith bar. You will feel that the bar flies up the top of the Smith machine at the slightest touch.

Each manufacturer has a different way of counterbalancing the Smith machine.

3. Angle of the Rails

While some Smith machines have vertical steel rails for near-vertical movement patterns, others come with a slight incline. The angeled rails mimic the natural movement path for compound exercises like the squat, bench press, and shoulder press. 

Commercial Smith machines generally have a seven to 12-degree incline, whereas most residential Smith machines move straight up and down. While the slight incline offers a more natural movement pattern, it also impacts the weight of the bar. Vertical Smith machines will put the highest resistance on your target muscles. 

Notably, the impact of the incline on the bar’s weight is close to minimal. For example, a 12-degree incline may only make the Smith machine bar feel one to two pounds lighter.

Two Different Types of Smith Machines

Smith Machines can be categorized into two sections — residential and commercial. Here are the main differences between the two:

Characteristics / TypeResidentialCommercial
LinearPerfectly LinearAngled (7-12 degrees)
CounterbalanceNoYes
Gliding SystemBushBearing
Sleeves1-2-inch sleeves2-inch sleeves
Bar Weight~30 pounds6-25 pounds

Bar Weights of Different Smith Machines

Below are the bar weights of some of the most popular Smith machine brands —

BrandBar Weight
Hammer Strength30 pounds
Matrix25-44 pounds
Body-Solid Residential6 pounds
Legend25 pounds
Nautilus15 pounds
Tuff Stuff10 pounds
Body-Solid Commercial32 pounds
Planet Fitness15-35 pounds
LA Fitness15-25 pounds
Marcy Smith16-36 pounds
Body Solid6-32 pounds
Hoist Smith25-52 pounds
Force USA45 pounds

How To Measure A Smith Machine Bar Weight Yourself

If you cannot find the weight of your Smith machine bar on a label, on the list above, or on the manufacturer’s website, there are three ways to measure the bar weight yourself:

1. Bathroom Scale

You could determine the Smith bar’s weight with a bathroom scale using two methods —

Option 1

  1. Step one — Place the weighing scale on an even surface and weigh yourself. 
  2. Step two — Set up the weighing scale on the floor under the Smith bar. There should be no weight plates on the bar sleeves. 
  3. Place the barbell on your shoulders and step onto the scale.
  4. Record the total weight.
  5. Step three — Subtract the number received in step one from the number on the scale in step two. The result will be the exact weight of the Smith machine bar. 

Option 2

This option is even easier. All you need are a plyobox and a weighing scale. The box is used to bring the scale in the Smith bar’s range of motion as it generally has several inches of free space from the floor to where the bar’s lowest position starts.

  1. Place the box directly under the Smith bar.
  2. Place the scale on the box, and then bring the bar down to the scale and let it rest on it.
  3. The reading on the scale is the weight of the Smith bar. 

2. Hanging Scale

This is probably the easiest, most convenient, and most accurate way to measure a Smith bar’s weight. All you need for this is a hanging scale, also known as a fish scale. 

Wrap the hanging scale’s strap around the bar, hook the strap to the hanging scale, and hang the bar from the scale to get its total weight.

3. Rope and Plates

Here is how to measure the weight of a Smith machine bar using a rope and plates —

  1. Tie one end of a thin rope around the middle of the Smith machine barbell and throw the other end over the crossbar (top bar).
  2. Set the bar at your chest level and hook it in place.
  3. The loose end of the bar should be near or touching the floor.
  4. Tie some weight plates to the loose end of the rope and unhook the bar to see if it balances with the weighted end of the rope. Think of it as a balancing scale. 
  5. Keep changing the weight on the loose end of the rope until the weight and bar balance. 

Related: Smith Machine Squat Alternatives for Powerful, Muscular Legs

FAQs

Should I consider the bar weight while using the Smith machine?

Make no mistake, a Smith machine’s bar weight is true weight. The Smith bars weigh between six to 52 pounds, and there is no reason why you shouldn’t consider them. 

Pro tip: You should only compare your Smith machine PRs with other Smith machine PRs. Even though the Smith machine bar is true weight, the fixed movement pattern, friction, and counterweight make exercises easier. To put it briefly, a 405-pound squat on the Smith machine does not equal a 405-pound squat using an Olympic barbell. 

Is knowing the bar weight while using a Smith machine necessary?

Would you lift a dumbbell for a working set without knowing how much it weighs? Knowing the bar weight is important if you want to build muscle mass and strength by progressively overloading your muscles. Knowing the bar weight can also help you figure out your starting weight on the first set of an exercise more accurately. 

Do Mr. Olympia champions use a Smith machine?

This is a common question — and a legitimate one too. Mr. Olympia champs are considered the best bodybuilders in the world. Bodybuilding and fitness aficionados follow their diets and training routines closely. An endorsement by the bodybuilding titans can certainly make their followers use the machine. 

The three-time Classic Physique Olympia champion, Chris Bumstead, calls the Smith machine a “godsend” and incorporates it in almost all his workouts. If a Mr. O. winner swears by the Smith machine, what is stopping you from adding it to your workouts?

Next Read: The 18 Best Smith Machine Exercises

Wrapping Up

Smith machines are seeing wide adoption in professional training routines, and many lifters turn to the training equipment to achieve better muscular stimulation and pumps. 

A smith machine also reduces a bodybuilder’s chances of getting injured during training by stabilizing the lift. To sum it up, the pros of using a Smith machine far outweigh the cons, and you should absolutely include it in your training regimen. 

References

  1. Schwanbeck, Shane; Chilibeck, Philip D; Binsted, Gordon A Comparison of Free Weight Squat to Smith Machine Squat Using Electromyography, Journal of Strength and Conditioning Research: December 2009 – Volume 23 – Issue 9 – p 2588-2591 doi: 10.1519/JSC.0b013e3181b1b181 
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Vidur Saini

Vidur Saini

Vidur Saini is a fitness enthusiast with a passion to share his hard-earned knowledge and bust bro-science stereotypes. His unsolicited advice benefits the readers & elicits the bros.

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