Commercial Leg Extension Curl Machine – Definitive FAQ Guide

A commercial leg extension curl is a combination exercise machine. It provides a complete and safe lower body workout routine.

Most fitness equipment manufacturers have it in stock. It is important to gather all the facts about leg extension curl machines before you make your choice.

I have included all the necessary information about commercial leg extension curl machines in this FAQ guide. 

It will help you make an informed decision.

Let’s have a look!

Table of Contents

1. What is the function of a commercial leg extension curl machine?

A commercial leg extension curl is a dual-action fitness machine used to perform two effective resistance-training exercises of the lower body:

• Seated leg extension (works the quadriceps & patellar ligament)
• Seated or prone leg curl (Isolates the Hamstring & glutes)

Figure 1 – A commercial leg extension curl machine

The machine allows the user to make a smooth transition between both exercises with very little adjustment.

2. What are the parts of a commercial leg extension curl machine?

A commercial leg extension curl machine has the following parts:

• Adjustable seat
• Adjustable backrest
• Sun-dial adjustment or pulleys (To change the range of motion)
• Adjustable thigh roller/pad
• Ankle roller/pad
• Accessory/bottle holder
• Instructional placard
• Dual Handles
  • On both sides of seat-pad for seated leg extension and curl
  • On top of the backrest for the prone leg curl
• Weight pin (plate-loaded machine)
• Weight stack (pin-loaded machine)
• Pull-pins or pop-pins (To convert from leg extension to leg curl)

Figure 2 – Parts of a commercial leg extension curl machine

3. What are the features of a commercial leg extension curl machine?

The features of a combination commercial leg extension curl machine are as follows:

• Switches easily between two functions
• Space-saving
• User friendly
• Costs less than buying separate machines
• Multiple adjustable parts

4. Can I buy a prone leg curl and a seated leg extension machine separately?

Yes of course.

At YR Fitness you have the option of buying a separate machine for either exercise. E.g.

• A prone leg curl machine

Figure 3 – A commercial prone leg curl machine

• A seated leg extension machine

Figure 4 – A commercial leg extension machine

5. Is a commercial leg extension curl machine adjustable?

Yes. Multiple parts of a leg extension curl machine are adjustable to enhance the user experience.

• Seat: Adjustable for both seated and prone positions
• Backrest: Up to 7-9 positions adjustment
• Sun-dial: Adjustable to allow for a full range of motion
• Thigh support: Up to 7-9 position adjustment
• Ankle roller: Up to 7-9 positions adjustable

Figure 5 – Adjustable seat back-pad & sundial of a commercial leg extension curl machine

6. What are the dimensions of a commercial leg extension curl machine?

The dimensions of a commercial leg extension curl machine are:

• Average weight: 120-200 Kg or above
• Average height: Approx. 50 inches
• Average weight capacity: 100-400kgs or above
• Average size: Varies depending on type & manufacturer
• Average pad thickness: 2-3 inches high density-foam
• Foam roller thickness: Average 3-inches or more

Dimensions may vary depending upon the size, type of the equipment & the manufacturer.

Figure 6 – Approximate dimensions of a commercial plate-loaded leg extension curl machine

7. What is the material of a commercial leg extension curl machine?

Frame:  Heavy-duty steel material, High-grade welded pipes, Powder-coated finish.

Upholstery: It includes seat, backrest, foam roller padding and covers.

• Pads: High-density design molded foam
• Pad covers: Furniture-grade PU leather or grippy vinyl

Weight stack: The weight stack for the pin-loaded commercial leg extension curl machines is covered with a shroud for safety.

• Shroud: 
  • Full or partial
  • Opaque or clear
  • Eco-friendly ABS material
• Cables & pulleys:
  • POM material pulleys
  • Coated cables

Figure 7 – Construction of a commercial leg extension curl machine

8. What is the difference between a pin-loaded and a plate-loaded leg extension curl machine?

The differences between pin-loaded & plate-loaded commercial leg extension curl machines are:

Plate-loaded leg extension curl machine	Pin-loaded leg extension curl machine
Uses weight plates Round weight plates Has to be manually loaded before starting a workout High weight capacity(by adding more weight plates) Weight plates purchased separately	Attached weight stack  Rectangular weight plates Weight selected by inserting a pin/key during a workout Weight capacity limited by the size of the weight stack Weight stack permanently attached

9. What makes a commercial leg extension curl machine adjustable?

Different parts of a commercial leg extension curl machine are made adjustable by using,

• Pop-pins
• Pull-pins
• Spring loaded pull-pin

10. What is a counter-balance weight pin and movement arm in a commercial leg extension curl machine?

Counter-balance Movement Arm

A counter-balance movement arm ensures a smooth movement path and a low initial weight.

Counter-balance Weight Pin

Some plate-loaded leg extension curl machines have a single weight pin or sleeve at the back or on both sides. 

It can be used to store extra weight plates & also works as a counter-balance to stabilize the machine while it is in use.

Figure 14 – Counter-balance weight in a plate-loaded leg extension curl machine

11. What are the accessories included with a commercial leg extension curl machine?

The accessories included with the commercial leg extension curl machine are:

• A bold instructional placard (written or pictorial)
• Accessory water bottle holder

12. What should you consider when buying a commercial leg extension curl machine?

These are some points to consider when buying a commercial leg extension curl machine.

Adjustable

Leg extension curl machines usually have multiple adjustable parts to account for users of different heights & sizes. 

YR Fitness leg extension & curl machines allow for 7-adjustable positions of the seat-pad & backrest.

Figure 17 – Adjustability of a commercial leg extension curl machine

Comfort

The adaptability to different users and their preferences with a little adjustment makes a commercial leg extension curl machine very comfortable & stable.

Machines that can switch smoothly between leg extensions & leg curls are the best choice.

Weight Capacity

Fitness equipment with high weight capacity is best, as it copes well with the changing requirements of the users in the long run.

Construction

Commercial leg extension and curl machines have heavy-duty, high-gauge steel frames. The finish is either chrome or electrostatic powder-coating to make it durable & sweat-resistant.

Leg Rollers

The thigh and ankle support rollers should at least have a thickness of 3- inches or more for proper support and function during use.

Plate-loaded vs Pin-loaded

It is a matter of preference because this factor doesn’t affect the performance of the commercial leg extension curl machine.

Both types of weight loads have pros and cons, which we have discussed in the question above.

Accessories

Commercial leg extension curl machines come with extra features (e.g.) a bottle holder or instructional placards displayed on the weight stack. 

Accessories are always an added benefit.

YR Fitness leg extension & curl machines come with a holder for water bottles. Some machines have trays for keys, cell-phones, etc.

Figure 18 – Accessories of a commercial leg extension curl machine

Complementary Machines

When planning your equipment setup, it’s also worth considering complementary machines for a more balanced leg day lineup. For example, a Seated Calf Raise is a valuable addition to target the lower leg muscles, which are often undertrained compared to the quads and hamstrings worked by a leg extension curl machine.

13. What type of weights is used with a commercial leg extension curl machine?

Any weight plates with 2-inch diameter center hole can be used on a commercial leg extension curl machine

But note that the weight plates are not included with the machine and have to be purchased separately.

 Figure 19 – Weight plates used with Plate-loaded leg extension curl machines

14. Can I customize a commercial leg extension and curl machine?

Yes, of course.

YR Fitness will customize the color of the frame and the upholstery (seat, backrest, foam rollers) according to your instructions.

The logo of a commercial leg extension and curl machine can be customized as well. It will support and advertise your brand and increase the brand value.

15. Do I need to assemble a commercial leg extension curl machine after receiving it?

Yes, some parts of the commercial leg extension curl machine have to be assembled once it is delivered to you. 

All parts are clearly labeled & an easy-to-understand instruction manual is provided. Some manufacturers have online assembly guides available as well.

Wholesale commercial fitness equipment is manufactured abroad & shipped to the buyers. 

The logistics during delivery demand that the equipment is shipped to you only partially assembled.

16. Is the handle and base of a commercial leg extension curl machine slip-resistant?

Yes, they are.

Rubber handle bar covers and rubber foot-pads make a commercial leg extension curl machine stable and slip-resistant.

Figure 20 – Rubber coated handle & foot-pads on a commercial leg extension curl machine

17. Conclusion

This FAQ guide includes all the information about commercial leg extension curl machines that you will need.

Hopefully, it will help you find the one best suited to your business & customers.

YR Fitness has a versatile range of commercial leg extension & curl machines for you.

Want to know more?

Hurry up and ask for a quote!