Not every hack squat uses the same movement path or resistance system. Traditional models use an angled sled, while other designs rely on a pivoting lever, weight stack or convertible leg press platform.

Understanding the different types of squat machines will help you choose equipment that matches your training goals, available space and budget. The right design can provide a stable lower-body exercise while still allowing you to adjust your stance, resistance and squat depth.

This guide compares seven major designs, explains how each machine is designed and helps you find the best squat machine for your home or commercial gym.

Table of Contents

• Understanding the Different Types of Squat Machines
• Quick Comparison of Hack Squat Machine Types
• 1. Plate-Loaded 45-Degree Hack Squat
• 2. Selectorized Hack Squat
• 3. Leg Press Hack Squat Machine
• 4. Leverage Squat Machine
• 5. V-Squat Machine
• 6. Vertical Hack Squat
• 7. Rack-Mounted Hack Squat Attachment
• Hack Squat vs Other Squat Machine Types
• How to Find the Best Squat Machine
• Proper Squat Form and Safety
• Frequently Asked Questions

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Understanding the Different Types of Squat Machines

The primary difference between these machines is how they guide the weight.

A linear model carries the weight along straight rails. A leverage squat rotates around a pivot, while a selectorized design connects the moving carriage to a weight stack. Combination units can convert between two exercises within the same frame.

These designs also position the user differently. Some support the back while the user faces outward. Others allow the user to face the frame, producing a movement similar to a reverse variation.

There are seven different types of squat equipment covered in this guide:

1. Plate-loaded 45-degree sled
2. Selectorized model
3. Leg press and hack squat combination
4. Leverage design
5. V-squat or power squat
6. Vertical design
7. Rack-mounted attachment

Each type of squat provides a different combination of stability, resistance and versatility.

Quick Comparison of Hack Squat Machine Types

Squat machine type	Resistance system	Best use	Main consideration
Plate-loaded 45-degree	Plates on an angled linear sled	Heavy quad training	Requires substantial floor space
Selectorized	Integrated weight stack	Fast adjustments and shared gyms	Usually more expensive
Leg press combination	Convertible plate-loaded sled	Two leg exercises in one footprint	Requires setup changes
Leverage design	Pivoting plate-loaded arm	Smooth arcing squat motion	Resistance changes through the movement
V-squat	Curved leverage path	Heavy quad and glute training	Feels different from a linear sled
Vertical design	Upright guided carriage	Smaller spaces	Designs vary between manufacturers
Rack attachment	Rack-mounted carriage or lever	Compact home gym setups	Compatibility must be confirmed

No single machine offers the ideal solution for every lifter. The best choice depends on whether you prioritise heavy loading, quick adjustments, compact dimensions or multiple lower-body movements.

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1. Plate-Loaded 45-Degree Hack Squat

The plate-loaded 45-degree sled is the standard hack squat found in most gyms. It uses an angled carriage with shoulder pads, back support and a large platform for the feet.

Weight plates are loaded onto horns attached to the carriage. The user steps beneath the shoulder pads, extends the legs to release the safety handles and then lowers the sled under control.

Because the carriage follows fixed rails, the user does not need to balance a barbell. This provides more external stability than a free weight exercise and makes it easier to concentrate on the working muscle group.

Benefits of the Standard Hack Squat

• Stable and predictable movement
• Suitable for heavy progressive overload
• Strong emphasis on the quadriceps
• Large platform for adjusting foot placement
• Adjustable safety stops
• Easy to use without a spotter
• Suitable for beginners and experienced lifters

The quadriceps perform most of the work, while the glutes, hamstrings and calves assist. A higher foot position generally involves more hip movement, while a lower position usually increases knee flexion.

Potential Drawbacks

The angled sled creates a relatively large footprint. You also need clearance on both sides to add a weight plate and enough space behind the frame to enter the starting position.

The unloaded carriage may already feel heavy to a beginner. Always test the empty unit before adding resistance.

For complete instructions, read our guide explaining how to use a hack squat with proper form.

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2. Selectorized Hack Squat

A selectorized model uses an integrated weight stack instead of loose plates. Resistance is adjusted by moving a pin to the required weight.

The carriage may still travel along an angled track, but cables, belts or a leverage system connect it to the stack. This makes weight changes considerably faster than loading plates manually.

Why Commercial Gyms Use Selectorized Equipment

A selectorized machine offers several advantages in a busy gym:

• Fast resistance adjustments
• No loose plates around the equipment
• Convenient drop sets
• Consistent weight increments
• Accessible setup for a beginner
• Easier transitions between different users

A cable machine may use a pulley ratio that changes how the selected resistance feels. A 2:1 ratio, for example, delivers less resistance at the user end than the total weight shown on the stack.

Potential Drawbacks

Selectorized equipment generally costs more than a comparable plate-loaded model. Maximum resistance is also limited by the stack unless the manufacturer offers an upgrade.

This design suits commercial facilities, rehabilitation settings and households where several people will share the equipment.

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3. Leg Press Hack Squat Machine

A leg press hack squat machine combines two major lower-body exercises in one frame. The back pad, shoulder support or platform can be adjusted to convert the equipment from one movement to the other.

In the hack squat position, the user stands beneath the shoulder pads and moves with the carriage. In the press position, the user sits or lies against the support pad and pushes the platform away.

Benefits of a Leg Press and Hack Squat Combo

• Two exercises within one footprint
• Efficient use of home gym space
• Plate-loaded resistance
• Trains the quads, glutes, hamstrings and calves
• Suitable for progressive overload
• Calf raise capability on many models

This combination is useful for someone who wants both movements but cannot accommodate two different squat machines.

Potential Drawbacks

Changing between exercises may require moving the back pad, locking a platform or repositioning other components. A combination model may also involve small compromises compared with two premium standalone machines.

Check the dimensions in both configurations before buying. You need enough clearance to load plates and operate the safety system.

The SFE Plate-Loaded 45-Degree Leg Press and Hack Squat provides both movements within one adjustable frame.

The Valor Fitness Hack Squat Combo is another option for lifters seeking two lower-body movements in one unit.

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4. Leverage Squat Machine

A leverage squat machine uses a pivoting arm rather than a sled travelling along straight rails. Plates are loaded onto the arm, and the resistance moves through an arc as the user bends the knees and hips.

This produces a different squat motion from a linear carriage. The load can feel heavier at certain points because the distance between the plates and pivot changes throughout the repetition.

Leverage Squat Machine Benefits

• Smooth pivoting action
• Heavy plate-loaded resistance
• Supported upper-body position
• Effective training for the quads and glutes
• Fewer long guide rails
• Multiple stance options on many models

Lever Squat Machine Considerations

The location of the pivot determines the resistance curve and body position. Two models can feel noticeably different even if they appear similar.

Begin with a light load and test the entire movement before adding more plates. The shoulder supports should remain secure without forcing the torso into an uncomfortable angle.

This design is suitable for lifters who want a heavy compound movement but prefer an arcing path over a conventional linear sled.

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5. V-Squat Machine

A V-squat machine is a specialised leverage design that moves through a curved path resembling a shallow “V.” It may also be marketed as a power squat or super squat machine.

The user stands on an angled platform beneath padded shoulder supports. Many models allow the exercise to be performed while facing toward or away from the frame.

Facing outward produces a supported squat pattern. Facing the equipment can shift the torso position and produce a movement similar to a reverse variation.

V-Squat Machine vs Traditional Design

The main difference is the movement path:

• A traditional 45-degree design travels along straight rails.
• A V-squat rotates around a pivot.
• The leverage design creates a changing resistance curve.
• The linear design provides a more consistent track.

A V-squat often allows more movement through the hips, whereas a standard sled usually feels more directly focused on the quads. The precise effect depends on the platform angle, lever length and user’s stance.

The SFE Plate-Loaded Power Squat and Hack Squat combines leverage-based movements in a commercial-style frame.

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6. Vertical Hack Squat

A vertical design guides the user through a more upright track than a conventional 45-degree sled.

Some versions position the user almost vertically beneath shoulder pads. Other models operate more like an upright squat press with a shorter carriage and compact frame.

Advantages of a Vertical Design

• Upright body position
• Guided squat pattern
• Potentially smaller footprint
• Stable platform
• Suitable for quad-focused training
• No need to balance a barbell

Important Differences Between Models

This category is not as standardised as the traditional angled design. The term can describe several configurations, so inspect the actual construction rather than relying on the product name.

Check the platform angle, pad position, starting resistance and available depth. Make sure the machine fits your height without restricting your natural squat mechanics.

This option is best for buyers who want a more upright piece of equipment and can verify the specifications before purchasing.

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7. Rack-Mounted Hack Squat Attachment

A rack-mounted attachment converts a compatible power rack into a guided or leverage-based leg station.

Some attachments use a trolley travelling along the rack upright. Others connect to a lever arm and use a separate platform. Resistance normally comes from Olympic plates.

Benefits for a Home Gym

• Uses an existing power rack
• Requires less permanent floor space
• Costs less than many standalone machines
• Provides another lower-body exercise
• Can be removed when not in use
• Uses weight plates already owned by the lifter

Compatibility and Setup

These attachments are not universal. Confirm the rack’s upright dimensions, hole size, hole spacing and approved mounting position before ordering.

Setup can take longer than using a dedicated unit. The resulting exercise may also feel less refined than a commercial sled with linear bearings.

A rack attachment is the right squat solution when space is limited and equipment compatibility has been confirmed.

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Hack Squat vs Other Squat Machine Types

Hack squats are only one category of supported lower-body training. Belt, pendulum, Smith, sissy and front-squat equipment provide alternatives with different loading patterns.

1. Belt Squat Machine and Belt Squats

A belt squat machine connects the resistance to a belt positioned around the hips. This allows the user to squat without supporting a bar or shoulder pads on the upper body.

Belt squats can be useful when upper-body fatigue or mobility makes a traditional squat uncomfortable. They also reduce direct loading through the spine, although they should not automatically be treated as a solution for an existing injury.

Research comparing belt and barbell squats found differences in glute activation, meaning the two exercises should not be considered biomechanically identical.

2. Pendulum Squat Machine and Pendulum Squat

A pendulum squat machine uses a long lever arm that moves through a curved path. It provides a supported squat with a changing resistance curve and often allows a deep, controlled repetition.

The pendulum squat is popular for bodybuilding and commercial gym training. However, these machines are generally large and expensive.

3. Sissy Squat Machine and Sissy Squat

A sissy squat machine secures the feet and lower legs while the user leans backwards and bends the knees.

It is a compact, quad-focused accessory rather than a replacement for heavy compound equipment. Most users begin with body weight before holding additional resistance.

4. Smith Machine vs Hack Squat

A Smith machine guides a barbell along fixed rails but does not provide the same back pad, shoulder carriage and large platform as a dedicated leg machine.

It offers greater exercise variety because it supports presses, rows, lunges and calf raises. The dedicated sled provides more body support and is usually easier to use for training the legs close to failure.

5. Front Squat Machine and Front Squat

A front squat machine supports the load across the front of the shoulders or upper torso. This encourages an upright position without requiring the wrist and shoulder mobility needed for a barbell front squat.

It can target different muscle groups than a rear-supported sled because of the altered torso and load position.

6. Squat Press Machines and Leg Presses

Squat press machines use a supported platform or lever that the user pushes away from the body. They are closely related to leg presses but may provide a more curved, squat-like path.

These designs allow heavy lower-body training while supporting the torso, but they do not precisely recreate a natural squat with free weights.

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How to Find the Best Squat Machine

Use the following criteria to identify the right squat equipment for your gym.

1. Match the Machine to Your Training Goal

Choose a linear sled if you want a stable, quad-focused exercise. Consider a leverage or V-squat if you prefer a curved path with greater hip involvement.

A combination model provides the greatest lower-body variety, while a rack attachment saves space.

2. Measure Your Available Space

Record the available length, width and ceiling height. Leave additional clearance for:

• Loading plates
• Entering the machine
• Operating safety handles
• Changing the configuration
• Moving around the equipment

A full-size sled can require more usable floor space than its listed dimensions suggest.

3. Choose Plate-Loaded or Selectorized Resistance

Plate-loaded models are mechanically simple and support substantial resistance. They require loose plates and manual loading.

Selectorized designs provide faster adjustments but usually cost more. Check the total stack weight and pulley ratio before purchasing.

4. Check the Starting Position

The shoulder pads and carriage should accommodate the user without forcing them to stand on their toes. Adjustable starting heights are valuable when beginners and experienced lifters share the machine.

5. Evaluate the Safety System

Look for accessible handles, secure catches and adjustable stops. The user must be able to safely end a repetition from the bottom position.

6. Consider Construction and Capacity

A commercial gym requires durable upholstery, strong bearings, stable steel construction and a suitable weight capacity.

A home gym does not always require the heaviest frame available, but the equipment should remain stable throughout every repetition.

Browse the complete Prime Strength Co squat machine collection to compare the available designs.

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Proper Squat Form and Safety

A guided track provides stability, but poor technique can still increase the risk of injury.

1. Set the Starting Position

Adjust the pads and safety stops before adding significant resistance. You should be able to enter and exit without forcing yourself underneath the shoulder supports.

2. Begin With a Light Load

Every design has a different empty weight and resistance curve. Test the equipment without additional plates before beginning your working sets.

3. Establish Your Foot Position

Place the entire foot securely on the platform. Keep the knees travelling in the same general direction as the toes.

Do not allow the heels to lift or the knees to collapse inward.

4. Control Your Movement Depth

Lower the carriage only as far as you can maintain contact with the support pad and platform. Avoid rounding the pelvis or allowing the lower back to lift.

5. Avoid Bouncing

Lower the resistance under control and reverse the movement using muscular force. Bouncing out of the bottom may increase strain on the lower back and knees.

6. Use the Safety Stops

Learn how the safety mechanism works before performing a heavy set. Never assume you will be able to escape if you cannot complete another repetition.

Anyone training around an existing condition should seek personalised advice from an appropriately qualified professional.

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Frequently Asked Questions

1. How Many Types of Hack Squat Machines Are There?

There is no official number because manufacturers use different names and configurations. The seven main designs include plate-loaded linear, selectorized, combination, leverage, V-squat, vertical and rack-mounted equipment.

2. What Is the Most Popular Squat Machine?

The plate-loaded 45-degree sled is the most recognisable design. It provides a fixed path, substantial loading capacity and a large platform for adjusting stance.

3. What Is the Best Squat Machine for Beginners?

A standard sled or selectorized model can work well for a beginner because both provide a guided movement. The user should begin with minimal resistance and learn the safety mechanism first.

4. What Is the Best Squat Machine for a Home Gym?

A combination leg press and hack squat offers excellent versatility. A rack-mounted attachment may be preferable when the available space is limited.

5. Which Option Is Best for a Commercial Gym?

A heavy-duty linear or selectorized model is normally the most practical choice. Commercial equipment should accommodate different users and provide simple adjustments, durable construction and accessible safeties.

6. Is a V-Squat the Same as a Hack Squat?

No. A V-squat uses a pivoting lever and curved path, while a standard design uses a carriage travelling along straight rails. Both provide supported lower-body training, but their resistance curves feel different.

7. Is a Pendulum Squat a Type of Hack Squat?

A pendulum model is a related squat machine rather than a conventional hack squat. Its long lever follows an arc and creates a different resistance pattern.

8. Can You Perform a Reverse Hack Squat on Every Machine?

No. Reverse repetitions are only appropriate when the pads, platform and handles allow the user to face the frame safely. Follow the manufacturer’s intended operating instructions.

9. Is a Combination Machine Worth Buying?

A combined leg press and hack squat can be worthwhile when you want both exercises without purchasing two machines. Check the conversion process, platform size and comfort of both positions before ordering.

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Choosing Between Different Squat Machines

Understanding the different types makes it easier to choose equipment that fits your training style.

A 45-degree sled provides the classic experience. Selectorized models make resistance changes faster, while combination machines add leg presses to the same frame. Leverage and V-squat designs create an arcing motion, and rack attachments offer a compact alternative.

Your final decision should account for available space, resistance type, user height, adjustability and the exercises you intend to perform consistently.

Compare our best hack squat machines for home gyms or shop the complete range of squat machines from Prime Strength Co.