Hammer Strength Prone Leg Curl – Definitive FAQ Guide

Are you looking for commercial quality hammer strength prone leg curls for your gym? You are in the right place. 

Strength training machines are a must for every respected gym and fitness center. These units are sturdy, have a large footprint, and last for years. Training the hamstrings has never been so easy. 

You may have questions about the hammer strength prone leg curl. So we prepared the following FAQ to help you choose through all its features and characteristics.

Let’s start.

Table of Contents

  1. What is a hammer strength prone leg curl?
  2. What are the advantages of a hammer strength prone leg curl?
  3. What are the dimensions of a hammer strength prone leg curl?
  4. What is the weight of a hammer strength prone leg curl?
  5. Is there a maximum user weight for hammer strength prone leg curl machines?
  6. What is the structure of a hammer strength prone leg curl?
  7. What is the mainframe material and diameter at hammer strength prone leg curl?
  8. What is the diameter of the belts and the pulleys of the hammer strength prone leg curl?
  9. What is the cushion durability of the hammer strength prone leg curl?
  10. What is the diameter of the weight selector pin at a hammer strength prone leg curl?
  11. Is the weight stack unit equipped with a bushing at a hammer strength prone leg curl?
  12. What are the blueprinted hammer strength prone leg curl units?
  13. Is the hammer strength prone leg curl featured with divergent angle lying pads?
  14. What are the features of the hand grips of hammer strength prone legs curl unit?
  15. Are the roller pads of the hammer strength prone leg curl adjustable? 
  16. What is the shroud material of hammer strength prone leg curl?
  17. What is the average weight of the stack at a hammer strength prone leg curl unit?
  18. What is Iso-Lateral technology at the hammer strength prone leg curl?
  19. What is the starting resistance of the hammer strength prone leg curl?
  20. Is the hammer strength prone leg curl equipped with electronic features? 
  21. Are there any other positions available than prone for a hammer strength leg curl unit?
  22. Is it easy to assemble the hammer strength prone leg curl on my own?
  23. Are there any placing requirements for the hammer strength prone leg curl?
  24. How can I prevent the hammer strength prone leg curl unit from slipping in my gym?
  25. Can I customize my hammer strength prone leg curl unit?
  26. Final Words

What is a hammer strength prone leg curl?

The hammer strength prone leg curl, or hamstring curls, is an essential strength training machine. Its design helps build leg muscle formation and provides flexibility to the hamstrings. 

It is unmissable in any gym or sports center. The hammer prone leg curl machine is made for elite athletes and for any trainee that wants to train like them. 

Hammer Strength Prone Leg Curl 1

Figure 1 Hammer strength prone leg curl unit 

What are the advantages of a hammer strength prone leg curl?

Hammer strength prone leg curl training offers important health benefits, such as:

  • Strengthens and improves the flexibility of the hamstrings
  • Trains gluteus muscles, thighs (quadriceps), and the front of the shins (tibialis anterior)
  • Improves overall strength, balance, and stamina
  • Delays body aging akes, knee, joint or back pain
  • Improves cardiovascular strength and weight problems
  • prevents chronic pain
Hammer Strength Prone Leg Curl 2

Figure 2 Benefits of prone leg curl 

What are the dimensions of a hammer strength prone leg curl?

The average dimensions of the hammer strength prone leg curl machine are 166 cm length x 100 cm width x 140 cm height (65 in x 39 in x 55 in).

However, the size of the unit may vary according to the manufacturer and the complexity of it. You can contact Yanre Fitness if you want to confirm the size of the machine. 

Hammer Strength Prone Leg Curl 3

Figure 3 Dimensions of hammer strength prone leg curl unit 

What is the weight of a hammer strength prone leg curl?

The average weight of hammer strength prone leg curl machines is about 475 lb (216 kg).

Is there a maximum user weight for hammer strength prone leg curl machines?

Yes. The user maximum weight recommended by hammer strength prone leg curl manufacturers is 300 lb (135 kg).

What is the structure of a hammer strength prone leg curl?

The main structure of a hammer strength prone leg curl unit is:

  • Mainframe
  • Cables 
  • Axis of rotation 
  • Belts and pulleys 
  • Cushioning 
  • Weight system with weight selector pin
  • Shrouds 
  • Hand grip 

Mainframe. This sturdy steel feature is the skeleton upon which the seat, the axis, and other pieces of the unit are built. It is highly resistant and chrome plated.

 To ensure high adhesion and durability, the frame is coated with a layer of electrostatic powder. 

Cables. The transmission cables are lubricated and coated with nylon. Normally, this type of cable it’s used in U.S. military units, thus is very qualitative.

The axis of rotation, or the pivot point of the unit, helps the trainee to properly line up with the knees. This is to ensure a safe and correct position during training. 

Belts and pulleys. With their help, the athlete lifts the weight connected to the unit. Normally, this is a support feature and it provides a good grip.

Cushioning is important for hammer strength prone leg curl training. Foam rollers and pads prevent stress on the hips, joints, and knees.

This feature makes the unit friendly to use by anyone, including persons with muscle recovery procedures. 

Cushions are located at the base of the lever, and two more angled foam pieces for the chest and the arms. 

The weight system represents the resistance of the hammer strength prone leg curl. High-end units locate the weights in the shroud. Otherwise, these are manually loaded by the user. 

Shroud is the place where the weights are placed. It’s connected to the unit’s axis through the cables. High-end hammer strength leg curl machines have full front shrouds. Others have standard rear shrouds. 

Hand grip for support during training, made of dense foam. It is normally covered up with quality leather.

Optional, high-end manufacturers provide with:

  • Instructional placards to illustrate the proper use of the unit
  • Incremental weight system from 1 kg to 3.5 kg (2.5 lb to 7.5 lbs)
  • Roller mechanism for user seat adjustment for up to 7 levels 

Foot platforms are also an extra feature. Hammer strength leg curl units with footrest allow more than one position of training, such as standing leg curls, seated leg curls, or kneeling leg curls. For lying leg curls units, foot platforms are not necessary. 

Hammer Strength Prone Leg Curl 4

Figure 4 Configuration of hammer strength prone leg curl 

What is the mainframe material and diameter at hammer strength prone leg curl?

The material of a quality hammer strength prone leg curl is steel pipe. To provide a good fatigue resistance, it should have a minimum diameter of 2.5 mm.

Yanre Fitness manufactures hammer strength prone leg curl with the mainframe size of 75*118*3 mm. We manufacture these units from high frequency welded pipe and only Q235 certified steel. These features ensure long-term use, even at high-intensity training.

Hammer Strength Prone Leg Curl 5

Figure 5 Yanre Fitness mainframe features of prone leg curl unit 

What is the diameter of the belts and the pulleys of the hammer strength prone leg curl?

The commercial-grade unit should provide a belt of an average of 11 cm and  15 cm (6”) of pulleys. Their high-quality fiberglass-impregnated nylon is thick enough to withstand the tension of exercising. 

What is the cushion durability of the hammer strength prone leg curl?

The durability of the cushions is high due to the foam material core. More than this, pads are molded with radius on edge for superior comfort and resistance.

Quality manufacturers stitch all the edges of the cushions. This prevents any folds and deterioration of the material in time. 

Overall, the lifespan of the cushions is long and many gym owners don’t have to replace them. Isolated cases were recorded, where due to low-quality manufacturing processes, the foam lost its firmness. 

Yanre Fitness is an international hammer strength prone leg curl supplier which makes self-designed equipment. Thus, we provide integrated pads, made of modeling foam, with high elasticity and resilience. Our products are designed and built in-house and meet all the ergonomics.

Hammer Strength Prone Leg Curl 6

Figure 6 Cushion example of hammer strength prone leg curl unit 

What is the diameter of the weight selector pin at a hammer strength prone leg curl?

A quality weight selector pin should have an average diameter of 11 mm (7/16”). This locks in place magnetically and is connected to the stack. 

Is the weight stack unit equipped with a bushing at a hammer strength prone leg curl?

Yes. Top-level hammer strength prone leg curl units are equipped with self-lubricating bushing systems. This ensures a securely closing for the solid- steel plates and prevents accidents during training. 

Hammer Strength Prone Leg Curl 7

Figure 7 Weight stack unit equipped with bushing 

What are the blueprinted hammer strength prone leg curl units?

The blueprinted hammer strength prone leg curl machines are the top-level strength training units. It means the shape of the machine is made following human movement. All the features are ergonomically designed to perfectly fit the athlete’s body. 

Blueprinted models ensure fluid movement, high comfortability, and ergonomic shapes. Thus, the training feels natural, there is no overstretching of the muscles and the body is correctly aligned. 

Hammer Strength Prone Leg Curl 8

Figure 8 Blueprinted prone leg unit 

Is the hammer strength prone leg curl featured with divergent angle lying pads?

Yes. Commercial grade hammer strength prone leg curls are equipped with divergent angle lying pads. This is made of two foam-padded pieces for the prone position. 

The divergent angle is necessary to ensure healthy leg curl training. With this angle between the hip and chest, the unit will considerably reduce lower-back tension.

However, keep in mind that medium or low units have horizontal pads. Experts have agreed that this position puts a lot of stress on the back. Thus, the athlete can suffer from back injuries. 

Hammer Strength Prone Leg Curl 9

Figure 9 Hammer strength divergent angle pads example 

What are the features of the hand grips of hammer strength prone legs curl unit?

The most important features of the hand grips for prone leg curl unit are:

  • Slip-resistant during use due to the aluminum collar that secures the hand grips
  • Wear-and-tear resistant 
  • Rubber compound material non-absorbing moisture 
Hammer Strength Prone Leg Curl 10

Figure 10 Hammer strength prone leg curl unit handles example

Are the roller pads of the hammer strength prone leg curl adjustable? 

Commercial grade units have adjustable roller pads. These need to be adjusted to rest on the Achilles tendon. Otherwise, the athletes risk performing incorrect exercises. 

Adjustable and quality pads are a must for nowadays gym centers. Contact Yanre Fitness to confirm if your unit may have adjustable pads. 

Hammer Strength Prone Leg Curl 11

Figure 11 Roller foam pads of prone leg curl unit 

What is the shroud material of hammer strength prone leg curl?

Yanre Fitness manufactures the shroud of the leg curl unit only of ABS virgin material, of 4 mm thickness. This construction material is durable and eco-friendly. 

Other manufacturers use plastic or mixed materials. But not all comply with the quality standards. If you are not sure of the quality of your supplier, contact Yanre to confirm all questions about hammer strength leg curl units. 

What is the average weight of the stack at a hammer strength prone leg curl unit?

The average weight stack of a leg curl machine is about 95 kg (200 lb). The amount of weight is adjustable by using the weight pin selector. 

However, the stack weight may vary, depending on the manufacturer. 

What is Iso-Lateral technology at the hammer strength prone leg curl?

The Iso-Lateral technology is connected to the movement of the limbs. While standard technology units only allow curls with both limbs at the time, the iso-lateral allows independent movement. 

This means that the unit allows trainees to move the limbs one at a time, by alternation. Or move them both simultaneously. They can also attach different weights to the unit if needed.

However, keep in mind that Iso-Lateral Technology is patented to be used exclusively for the parent company Hammer Strength. 

Hammer Strength Prone Leg Curl 12

Figure 12 Iso-technology example of hammer strength prone leg curl 

What is the starting resistance of the hammer strength prone leg curl?

The starting resistance of the hammer strength prone leg curl unit is about 1 kg (3 lb). 

Is the hammer strength prone leg curl equipped with electronic features? 

Yes. Top-level leg curl units are equipped with some technological features. Frequently, hammer strength leg curl units feature an electronic reps counter and timer. These features are convenient to the athlete, as it is easier to keep track of the training progress.  

Hammer Strength Prone Leg Curl 13

Figure 13 Example of hammer strength prone leg curl monitor 

Are there any other positions available than prone for a hammer strength leg curl unit?

Yes. There are three other positions of leg curl except lying:

  • Seated leg curl 

For athletes who cannot stand in a prone position, a seated leg curl is an excellent alternative. The seat is padded and the hand grips are located at the seat level. 

Hammer Strength Prone Leg Curl 14

Figure 14 Seated leg curl 

  • Standing leg curl

Performing leg curls in a standing position are comfortable and accessible to any trainee. The unit provides support for arms. The seat helps training in an inclined position. 

Hammer Strength Prone Leg Curl 15

Figure 15 Standing leg curl unit 

  • Kneeling leg curl 

Kneeling leg curls helps build strong hamstrings. The athlete rests one knee on the pad and with the other one performs curls. 

Hammer Strength Prone Leg Curl 16

Figure 16 Kneeling leg curl 

Is it easy to assemble the hammer strength prone leg curl on my own?

No. The parts that assembly the hammer strength leg curl unit are quite heavy. Remember that the overall weight of the unit is more than 200 kg. 

Your supplier should provide explicit instructions to be able to assemble and install it in your gym. You may need some else’s assistance too.

Hammer Strength Prone Leg Curl 17

Figure 15 Diagram of a leg curl unit

Are there any placing requirements for the hammer strength prone leg curl?

Yes. The hammer strength prone leg curl must be located in a wide area of your gym, with a tall ceiling. Also, the machine must be used in a dry gym, ideally with lots of natural light. 

This machine needs quite a big space to be located in the gym. The clearance maintained around it must be about  2000 mm × 2000 mm. 

How can I prevent the hammer strength prone leg curl unit from slipping in my gym?

Commercial grade hammer strength prone leg curls are equipped with rubber feet. These ensure the protection of the frame and prevent the machine from slipping.  

If the unit does not have rubber feet, you can always use a protective floor mat to prevent damage to your gym floor. 

Hammer Strength Prone Leg Curl 18

Figure 16 Floor protection mat example 

Can I customize my hammer strength prone leg curl unit?

Yes, manufacturers can customize your leg curl unit for a more professional look. 

Yanre Fitness is an expert in custom-made hammer strength prone leg curls or any other gym equipment. You can select from a wide palette of frames, colors, and cushion materials. 

Final Words

I hope the above guide answered many of your questions about hammer strength prone leg curl machines. 

If something is still questionable, please contact Yanre Fitness sales team to clarify all doubts.

Need to import hammer strength prone leg curls for your gym? Let Yanre take your order to the next level. Our premium units can be made for your gym. Contact us now.