7 Best Smith Machine Shoulder Exercises

Bigger shoulders don’t always need heavier dumbbells — sometimes they just need a smarter setup.

The Smith machine’s fixed path lets you press, row, and shrug with total control, training closer to failure without a spotter watching your back.

When it comes to developing strong shoulders, the Smith machine is frequently overlooked, but it should not be overlooked.

It’s one of the best tools for building the strong, defined shoulders you’ve been wanting!

In this guide, I’m breaking down the 7 best Smith machine shoulder exercises — exact form, sets and reps, and the mistakes that quietly stall most people’s shoulder gains.

7 Best Smith Machine Shoulder Exercises

To increase the size and strength of your deltoid muscles, here are the seven most powerful Smith machine shoulder exercises I have personally tested and confirmed with top strength trainers.

#	Exercise	Main Target	Level	Sets × Reps	Watch Out For
1	Seated Smith Machine Shoulder Press	Anterior deltoid (medial deltoid, triceps, upper chest secondary)	Beginner+	3–4 × 6–10	Bench too far forward or back
2	Smith Machine Standing Shoulder Press	Anterior deltoid, plus core and glutes to brace	Intermediate	3 × 6–10	Leaning back to clear the bar path
3	Smith Machine Upright Row	Medial deltoid, upper trapezius	Intermediate	2–3 × 10–15	Pulling to the chin; pinching
4	Smith Machine Shrug	Upper trapezius (rhomboids secondary)	Beginner+	3–4 × 8–15	Rolling shoulders, bending elbows
5	Behind-the-Back Smith Machine Shrug	Upper trapezius (rhomboids, posterior deltoid secondary)	Intermediate	3 × 8–12	Front-of-shoulder strain reaching back
6	Smith Machine Behind-the-Neck Press	Medial and posterior deltoid (anterior deltoid, triceps secondary)	Advanced only	2–3 × 8–12	Limited shoulder or upper-back mobility
7	Bent-Over Smith Machine Row	Rhomboids, lats, rear deltoid	Intermediate	3 × 8–12	Rounding the lower back; standing too upright

1. Seated Smith Machine Shoulder Press

The seated press is the best mass-builder on this list. The back pad removes most of the stability demand, and the safety stops let you push close to failure with confidence. That makes progressive overload easy to track.

The Smith Machine shoulder press is a compound, upper-body pushing movement that primarily targets the deltoid muscles (especially the anterior and medial heads) and engages the triceps, upper chest, and core stabilisers.

Muscles worked

• Primary: anterior (front) deltoid.
• Secondary: medial (side) deltoid, triceps, upper chest.

How To Do It

1. Place an adjustable bench inside the machine set to 80–90° with the back pad fully supporting you. Position it, so the bar will lower just in front of your face.
2. Set the safety stops just below chin level, and set the hooks at a height you can unrack and re-rack comfortably.
3. Sit back with your feet flat. Grip the bar just wider than shoulders, so your forearms are vertical at the bottom.
4. Unrack and lower under control to about chin or upper-chest level, elbows slightly in front of your torso rather than flared straight out.
5. Press straight until your arms are nearly straight, then re-rack by rotating your wrists back over the hooks.

Common mistakes

• Bench too far back or forward, so the bar path fights your shoulders.
• Arching your lower back off the pad to cheat the last reps.
• Bouncing the bar off your chest instead of pausing under control.

Related :10 Best Shoulder Exercises To Build Mass

2. Smith Machine Standing Shoulder Press

Unlike the seated version, the standing press requires the coordination of your shoulders, arms, core, and lower body to maintain balance and posture, even on a fixed path.

Standing presses teach you to create tension from the ground up—feet rooted, glutes engaged, core braced. This technique is better suited to athletic movements and free-weight standing overhead presses.

Muscles worked

• Primary: anterior deltoid.
• Secondary: medial deltoid, triceps, upper chest.
• Bracing: glutes, abs, spinal erectors.

How to Do It

1. Set the Smith machine bar to a height where you can comfortably unrack it from roughly upper chest/clavicle level when standing.
2. Position your feet shoulder-width apart, or slightly wider for a more stable base. Ensure your feet are directly under or slightly behind the bar’s path. 
3. Take a pronated (overhand) grip, slightly wider than shoulder width. Your forearms should be near vertical when the bar is at chest level.
4. Rotate the bar to unrack it. Allow the bar to rest at your upper chest/clavicle. Elbows should be slightly in front of the bar.
5. Exhale and press the bar straight overhead.
6.  Inhale slowly, with control, and lower the bar back to the starting position on your upper chest.

Coach’s note: Don’t assume this carries over to free-weight overhead pressing. In one EMG study, a barbell overhead press excited the shoulder muscles more than a machine that fixed the load’s path (Coratella et al., 2022). Train both if free-weight pressing is your goal.

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3. Smith Machine Upright Row

The upright row builds the side delts and upper traps. It also has a reputation for irritating shoulders, so the setup matters more here than on any other exercise on this list.

If you want to carve out well-defined shoulders (mainly lateral delt) and upper traps, the Smith machine upright row should be in your arsenal.

Muscles worked

• Primary: medial deltoid, upper trapezius.
• Secondary: anterior deltoid, biceps, and forearms.

How To Do It

1. Stand close to the bar with feet shoulder-width apart or slightly narrower. Stand tall, core engaged, and bend the knees slightly.
2. Take an overhand grip at least shoulder-width apart, or even slightly wider. 
3. Allow the bar to hang with extended arms, resting against your thighs.
4. To start the pull, move your elbows up and outward. Keep the bar close to your body as it slides up.
5.  Pull the bar only to your lower chest or sternum height. 
6. At the top of the (modified) movement, your elbows should be higher than your wrists, and your upper arms should be roughly parallel to the floor or slightly above.
7. Focus on squeezing your delts and traps.
8. Slowly and with control, lower the bar back to the starting position.

Safety note: Never pull the bar to your chin. A fixed bar path can’t adapt to how your arms naturally travel, so if you feel any pinching at the front or top of the shoulder, stop. Switch to a cable or dumbbell upright row, or to lateral raises, which give your arms a freer path.

4. Smith Machine Shrug

The Smith Machine Shrug is a highly effective exercise that targets the Upper trapezius muscles.

The Smith machine’s safety features and fixed path enable you to handle substantial weight with greater confidence and less concern for balancing a free barbell, allowing you to train your traps effectively.

Muscles worked

• Primary: upper trapezius.
• Secondary: levator scapulae, rhomboids, forearms (grip).

How To Do It

1. Set the Smith machine bar to a height where you can comfortably grip it with extended arms, typically around mid-thigh level.
2. Stand with your feet about shoulder-width apart and the bar right under your thighs or in front of them.
3. Take a pronated (overhand) grip on the bar at shoulder width. Some people prefer a slightly narrower grip, but shoulder width is a good starting point. Ensure your grip is even.
4. Your shoulders should be relaxed and depressed (downward) to allow for a full range of motion. Keep your chest up and head neutral (looking straight ahead or slightly up).
5. Elevate your shoulders straight up as high as possible without bending your elbows.
6. Focus on squeezing your trapezius muscles hard at the peak of the contraction. Imagine trying to touch your shoulders to your earlobes.
7. Hold the peak contraction for a second or two to maximise muscle activation.
8. Slowly and with control, lower your shoulders back to the starting position.

1. Avoid: rolling your shoulders forward or back. It adds no benefit and puts extra stress on the joint.

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5. Behind The Back Smith Machine Shrug

The Behind the Back Smith Machine Shrug is a powerful variation of the traditional shrug that trains the upper and middle fibres of the trapezius while recruiting stabilisers like the rear deltoids and rhomboids.

I’ve found it helps clients who tend to round their shoulders forward during standard shrugs, as the bar behind them forces a more upright and retracted shoulder posture.

Muscles worked

• Primary: upper trapezius.
• Secondary: rhomboids, posterior deltoid, forearms.

How To Do It

1. Adjust the Smith machine bar to a height just below your glutes.
2. Stand facing away from the machine with your feet shoulder-width apart.
3. Grasp the bar behind your back with an overhand grip, hands slightly wider than shoulder-width.
4. Reach behind your back and grab the bar with an overhand grip, slightly wider than shoulder-width apart.
5. Shrug your shoulders upwards and raise the bar as high as you can comfortably.
6. Squeeze your traps at the top of the movement for a second, then slowly lower the bar back to the starting position.
7. Repeat for 8–12 repetitions, 3–4 sets.

Safety note: Holding the bar behind you puts your shoulders in extension. If you feel strain at the front of the shoulder, or your grip position feels awkward, do the standard shrug instead.

6. Smith Machine Behind The Neck Shoulder Press

This is the one exercise here I’d call optional. Behind-the-neck pressing can shift more work onto the side and rear delts, but it demands good shoulder and upper-back mobility.

If you don’t have it, the front presses above will serve you better.

The standard military press and the overhead dumbbell press hit more of the anterior head of the deltoid, which is often stimulated a lot, even during the bench press.

Muscles worked

• Primary: medial and posterior deltoid.
• Secondary: anterior deltoid, triceps, upper trapezius.

How To Do It

1. Set the Smith machine bar high enough to unrack it without excessive strain, and low enough that the safety catches are positioned just below your safe bottom range of motion.
2. Sit or stand, so the bar path is directly aligned with your spine when viewed from the side.
3. Take a pronated (overhand) grip significantly wider than the shoulder width.
4. Unrack the bar and stabilise it overhead. Lower the bar behind your head towards the base of your neck/upper traps.
5. DO NOT lower the bar past ear level or to a point where you feel ANY pinching, discomfort, or loss of control. For most, this will be a much shorter range of motion than a front press.
6. Press the bar back up to the starting position.
7. Do 8–12 Reps

Skip this exercise if: you have any shoulder pain, can’t hold your forearms vertical at the bottom, or your upper back is stiff. Swap in the seated front press or a landmine press.

7. Bent Over Smith Machine Row

The bent-over Smith machine row is a compound, horizontal pulling exercise that targets the middle back, rhomboids, lats, and rear delts. It also targets the biceps, shoulders, and traps to a lesser degree.

Use a wide grip to emphasise lats or a narrower grip to target rhomboids and traps more. An underhand grip can increase biceps involvement.

Muscles Worked

• Primary: latissimus dorsi, rhomboids, posterior deltoid.
• Secondary: middle trapezius, biceps, forearms.

How To Do It

1. Set the Smith machine bar low enough to achieve a proper bent-over position with your arms nearly extended,.
2. Stand with your feet about shoulder-width apart. You’ll likely need to position your feet slightly behind the bar’s vertical path so it can be pulled towards your torso without hitting your shins or knees.
3. Hinge at the hips, maintaining a neutral spine and angling your torso until it is approximately 45 degrees or nearly parallel to the floor.
4. Take a pronated (overhand) grip on the bar, typically slightly wider than shoulder-width. Some prefer an underhand (supinated) grip for more biceps and lower lat activation, but overhand is standard.
5. Pull your shoulder blades back together or retract your scapulae. Then, pull the bar towards your lower chest or upper abdomen.
6. Slowly lower to the starting position in a controlled manner.

Common Mistakes

• Standing too upright, which turns the row into a shrug and takes the lats out of it.
• Rounding the lower back to yank the weight up — hinge from the hips, not the spine.
• Letting the bar drift away from the body, which turns the pull into a rear-delt-dominant movement instead of a back-dominant one.

Related : 12 Best Cable Shoulder Exercises For Bigger and Stronger Delts

FAQs

Smith Machine vs Free Weights for Shoulders

Factor	Smith machine	Free weights
Stability demand	Low: the bar is on rails	Higher: you control the path
Safety near failure	Strong: rack anywhere	Needs a spotter or safeties
Movement path	Fixed; can’t adapt to your natural arc	Free; adapts to your joints
Muscle activation (research)	Often lower in the shoulder muscles	Often higher
Best use	Heavy pressing and controlled volume	Overall strength and joint-friendly variations

References

• Schick EE, Coburn JW, Brown LE, Judelson DA, Khamoui AV, Tran TT, Uribe BP. A comparison of muscle activation between a Smith machine and free weight bench press. J Strength Cond Res. 2010 Mar;24(3):779-84. doi: 10.1519/JSC.0b013e3181cc2237. Erratum in: J Strength Cond Res. 2011 Jan;25(1):286. PMID: 20093960.
• Saeterbakken AH, Olsen A, Behm DG, Bardstu HB, Andersen V. The short- and long-term effects of resistance training with different stability requirements. PLoS One. 2019 Apr 1;14(4):e0214302. doi: 10.1371/journal.pone.0214302. PMID: 30934001; PMCID: PMC6443166.