Seated Abs Crunch Machine Manufacturer in China
Built by athletes, for athletes.
Built tough to handle every strength training.
Built with precise movement angles since 1997.
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Certified by Global Standards
Backed by CE, TÜV, and ISO certifications so you can buy with full confidence in safety and performance.
DESIGNED By ATHLETES,
FOR ATHLETES
At YR Fitness, Design Transcends Aesthetics.
It’s About Functionality.
Simple, But Significant.
Only True Feedback Counts
Quality Standard of YR Fitness
That’s why we are confident to compete with big brand quality, but at 1/5 price.
Built with Strength: 3.0mm Solid Steel Pipes
We use thick 3.0mm+ Q235 steel pipes for every part of the machine — whether it’s the frame or the training area, no matter the size. With added reinforcement bends, our machines stay strong and steady. No shaking, just solid power.
This is How We Make Your Gym Equipment
Over 20 years, YR Fitness has put $8M into tech—just to bring you better machines.
100% Original Design Since 1997
Because Great Design Makes Great Machines.
Pulley Output Ratio
Leveraging the power of physics, we’ve tailored our pulley output ratio for optimal training. Take our butterfly machines: a 2:1 ratio means a 70kg weight selection delivers a 35kg training load. This higher ratio enhances your workout and saves on weight plate costs.
Compare Our Key Series
73 Series
Heavy-Duty Frame
Pro-Level Movement
High-End Line
61A Series
Durable
Affordable
Best-Selling
C4 Series
Modern Look
Upgraded Fusion
More Features
Quick Comparison At A Glance
Feature | 73 Tough Series | 61A Racing Series | C4 Revival Series |
|---|---|---|---|
Launch Year | 2008 | 2016 | 2025 |
Design Focus | High-end performance and biomechanics | Space-saving, budget-friendly, market-driven | Combines 61A’s simplicity with 73’s advanced features |
Frame Tubing | 75×130×3.0 mm (main) + 58×101×3.0 mm (functional) | 75×118×3.0 mm (main) + 50×120 / 40×80 / 50×100 mm | 150×50×3.0 mm (main) + 50×120 / 40×80 / 50×100 mm |
Aesthetic Design | Parabolic, bold, aluminum accents | Compact and practical | Stylish, modern, fits younger gym aesthetics |
Durability Level | Heavy-duty, custom-engineered components | Very durable, many still running after 20+ years | Same durability level with upgraded styling and adjustability |
Movement Types | Independent converging/diverging paths | Standard movement paths | Includes both standard and independent paths (split models) |
Adjustability | Basic adjustability | Standard user adjustability | Advanced: rotating handles, adjustable pads, backrests, etc. |
Innovation Level | First of its kind globally in 2008 | Refined through years of customer feedback | Integrated innovation from both series + unique new machines |
Series Size | 62 models | 62 models | 74 models (still expanding) |
Target Buyer | High-end gyms, serious training centers | Budget-conscious gyms, franchise chains | Gyms that want both performance and style |
Pricing | Premium | Most affordable | Mid-range, with excellent feature-to-price ratio |
Production Method | Partially handmade due to complex design | Fully industrialized | Industrial production with some specialty detailing |
After-Sales Service | Lifetime support | Lifetime support | Lifetime support |
Let’s Talk
Blake Fisher
Gym Owner from Malaysia
Our members love using this. Super strong with top engineering. Great quality at an affordable price. Smooth to operate, can handle big weights and hits the target muscle. We are very satisfied for these gym machines! We plan on opening another gym once the virus is over.
Jay Dang
Gym Owner from Australia
Commercial quality. Well made. I feel it is just as good as the other top brand benches we have at our club eg Technogym, Matrix etc, but is so much more affordable. All of my order arrived on time and the sales manager was awesome to communicate with. Highly recommend!!!
Steve
Gym Owner from USA
The Quality is very nice, I really like them. All my clients are happy with my new equipment. I will work hard to promote them in Poland.
Allan
Distributor from Poland
Seated Abs Crunch Machine – Definitive FAQ Guide
1. What is a seated abs crunch machine?
A seated abs crunch machine is a strength machine that helps users train the abdominal muscles in a controlled seated position.
This machine guides the user through a simple crunch motion. It supports the spine and keeps the movement safe for both beginners and advanced users. Many gym owners choose this machine because it is easy to use and works well in any training program.
At YR Fitness, we design our commercial machines with proper movement angles and ergonomic support. We focus on helping gyms offer safe, effective, and long-lasting core training options. Our machines are built for heavy daily use in commercial settings and are recognized by professional trainers for their performance.
3. What’s the width of a seated abs crunch machine?
The width of a seated abs crunch machine is usually around 85–100 cm.
This width fits well in most gyms while giving the user enough room for comfortable movement. The exact width depends on the machine’s frame design, seat shape, and weight stack position. Most commercial models fall within this range to help gym owners manage floor space effectively.
At YR Fitness, we design our machines to be space-efficient without reducing strength or stability. Our frames use solid, commercial-grade materials that hold up under heavy use while keeping the footprint compact. This helps gym owners place more equipment in limited space and still meet the demands of daily commercial training.
5. What is the average weight of a seated abs crunch machine?
A seated abs crunch machine typically weighs between 150 kg and 220 kg.
Commercial machines are heavier because they use thicker steel, larger weight stacks, and reinforced frames. The weight helps the machine stay steady during use, even in busy training environments.
At YR Fitness, our commercial-grade materials and construction methods make the equipment strong and long-lasting. The added weight reflects the durability needed for high-traffic gyms that run all day. Many of our clients use our equipment for years under heavy training conditions.
7. How much weight can a seated abs crunch machine hold?
A seated abs crunch machine can usually hold a weight stack between 70 kg and 120 kg.
The weight limit depends on the machine’s design and purpose. Commercial gyms often prefer higher load capacity for intermediate and advanced users. A stronger frame also supports users of different body weights without shaking or bending.
At YR Fitness, we build machines that can manage heavy daily use and high training loads. Our designs follow proper mechanical principles to keep the frame stable and the motion smooth under repeated tension. This helps gym owners support a wide range of members, from beginners to trained athletes.
9. Can you select the weight load in a seated abs crunch machine?
Yes, most seated abs crunch machines let you select the weight load through a pin-select weight stack.
Users can change resistance by moving a selector pin to the desired weight level. This makes it easy to adjust the load quickly between sets or between different users. The range usually fits beginners and experienced lifters.
At YR Fitness, we use commercial-grade weight stacks that adjust in small increments, so gym members can increase resistance smoothly as they improve. Our stack system is built for long-term use in busy gyms, with durable plates and reliable selector pins.
For gyms building a stronger core-training lineup, exploring the best ab machines can help you choose equipment that complements a seated abs crunch machine.
11. Does the machine support both beginners and advanced users?
Yes, a seated abs crunch machine supports both beginners and advanced users because the weight load is adjustable.
Beginners can start with light resistance and learn proper form. Advanced users can increase the load or slow down the tempo to increase difficulty. The fixed motion path also helps users stay safe and maintain correct posture.
At YR Fitness, we design movement angles that follow ergonomic and biomechanical principles. This gives beginners a smoother learning curve and gives advanced members the challenge they need. Our commercial-grade construction also helps the machine withstand heavy daily use from all fitness levels.
13. Is the movement smooth and quiet during use?
Yes, commercial seated abs crunch machines are designed to move smoothly and stay quiet during use.
Smooth movement comes from quality bearings, pulley systems, and proper cable alignment. Quiet operation is important in commercial gyms because it creates a calm and professional training environment. Machines with poor components often create noise or friction over time.
At YR Fitness, we use durable pulleys and sealed bearings that support steady and quiet motion, even under heavy daily use. Our focus on engineering and strong materials helps reduce long-term wear and keeps the machine operating smoothly for years.
15. What safety features are built into the machine?
A seated abs crunch machine usually includes a stable steel frame, fixed movement path, anti-slip handles, and secure seat adjustments.
These features keep the user aligned and prevent sudden or unsafe motion. The guided path reduces the chance of twisting, and the stable frame supports users of different weights. Clear weight labels and secure selector pins also add safety.
At YR Fitness, we build our machines with heavy-duty commercial steel and precise movement angles to keep training safe. Our frames, pads, and adjustment systems meet strict quality standards, including ISO20957, ensuring every user can train with confidence.
17. How often does a seated abs crunch machine need maintenance?
A seated abs crunch machine usually needs basic maintenance every 1–3 months in a commercial gym.
This includes checking cable tension, cleaning the upholstery, inspecting pulleys, and tightening bolts. In very busy gyms, weekly quick checks help spot early signs of wear. Regular upkeep prevents downtime and keeps the machine moving smoothly.
At YR Fitness, we design our machines to reduce maintenance needs through strong components and quality engineering. Our pulley systems, bearings, and frames are built for long-term use, helping gym owners keep maintenance simple and predictable.
19. Does the machine require assembly on delivery?
Yes, most seated abs crunch machines require some assembly on delivery.
Commercial machines are shipped in protective packaging, and key parts such as the frame base, movement arms, and weight stack often need to be installed on-site. This helps prevent damage during shipping and makes transport easier for gyms and distributors.
At YR Fitness, we ship our equipment with clear instructions and labeled components to make the assembly process simple. Our sales team also provides support before and after delivery to guide gym owners through setup when needed.
21. Are color or upholstery customization options available?
Yes, many seated abs crunch machines offer color and upholstery customization depending on the manufacturer.
Common customizable areas include frame color, seat padding color, and sometimes the stitching. This helps gyms match their branding or create a coordinated look throughout their equipment lineup.
At YR Fitness, we support customization options for both frame and upholstery so gym owners and distributors can match their facility theme. This helps create a consistent, professional appearance across all strength and cardio equipment.
2. What are the main key features of a seated abs crunch machine?
A seated abs crunch machine usually includes a stable frame, padded seat, smooth motion, and an adjustable weight system.
The machine often has a heavy steel frame, quality padding, and a guided movement path that keeps the user in proper form. These features make the machine simple to use and suitable for most gym members. Gym owners value this type of equipment because it works for both casual and serious training.
At YR Fitness, we build our machines with commercial-grade materials and thicker padding to support long-term use. We design the movement angle based on biomechanics so users get a natural and safe crunch motion. Our equipment is made to handle high traffic and meet international standards like ISO20957.
4. How much floor space is needed for a seated abs crunch machine?
A seated abs crunch machine usually needs about 1.5 to 2 square meters of floor space.
Most commercial models need enough room for the frame, the user’s movement, and safe clearance around the machine. The exact space depends on the machine’s length and width, but 1.5–2 m² is a good rule for planning gym layouts.
At YR Fitness, we design our machines to save space while staying stable and durable. Our compact frames help gym owners fit more equipment into their training areas without reducing training quality or safety. This helps maximize floor efficiency in both small and large commercial gyms.
6. What’s the material of a seated abs crunch machine?
Most seated abs crunch machines use high-strength steel frames with foam padding and PU leather upholstery.
The steel frame provides stability and durability, while the padding and upholstery keep the machine comfortable for users. Commercial models usually use thicker steel tubing and higher-density foam to handle daily use.
At YR Fitness, we use solid steel and commercial-grade materials across our strength line. Our frames are built to withstand long-term, heavy use in commercial gyms. We also use thick, durable padding to support user comfort and reduce wear over time.
8. What type of bearings or pulleys does the machine use?
A seated abs crunch machine normally uses high-quality sealed bearings and reinforced nylon or aluminum pulleys.
These parts help the machine move smoothly and quietly. Good bearings reduce friction and wear, while strong pulleys ensure consistent motion and longer service life. Commercial machines require better components because they are used many hours each day.
At YR Fitness, we use durable pulley systems and smooth bearing components designed for commercial-grade reliability. This helps reduce long-term maintenance and gives users a steady, consistent feel during every rep. Our focus is to keep the motion aligned with proper biomechanics and ensure long-term performance in busy gym environments.
10. Is the weight stack upgradeable?
Yes, many seated abs crunch machines offer upgradeable weight stacks, depending on the model.
Some machines start with a standard stack — for example 70–90 kg — and allow optional upgrades to higher capacities. This helps gym owners support stronger users without replacing the entire machine.
At YR Fitness, we design our commercial equipment with flexible weight stack options. Many of our models can be ordered with larger stacks or upgraded later, which helps gym owners plan for long-term growth and changing member needs.
12. Is the seat height adjustable for different users?
Yes, most seated abs crunch machines come with an adjustable seat height.
This helps users of different body sizes line up their torso and hips with the machine’s movement arm. Proper alignment improves comfort and reduces the risk of strain. The adjustment is usually a simple handle or pop-pin system.
At YR Fitness, we design our seats to adjust smoothly and lock securely in place. This helps gym owners serve a wide range of members, from shorter users to taller athletes, while keeping every rep safe and comfortable.
14. What type of padding is used on the seat and backrest?
Most seated abs crunch machines use high-density foam padding with durable PU leather upholstery.
High-density foam gives firm support, which helps users maintain proper posture during the crunch motion. PU leather is commonly used because it is easy to clean, resists sweat, and holds up well in commercial environments.
At YR Fitness, we use thick, commercial-grade foam and long-lasting upholstery to reduce wear in high-traffic gyms. Our padding is designed to stay firm after years of use, helping gym owners reduce replacement costs and maintain a professional look in their facility.
16. Is the machine suitable for commercial gyms with high traffic?
Yes, a seated abs crunch machine is designed for high-traffic commercial gym use when made with commercial-grade materials.
Gyms with many daily users need equipment that can handle repeated bending, pulling, and loading without wearing out. Machines built for home use do not hold up well under this pressure, which is why commercial quality is important.
At YR Fitness, all equipment is built specifically for commercial gyms and distributors. We use solid materials, reinforced frames, and long-lasting components that can withstand years of heavy use. Many large gym chains rely on our machines because they are durable, stable, and cost-effective.
18. Are replacement parts easy to find?
Yes, replacement parts for commercial seated abs crunch machines are usually easy to source from the manufacturer or authorized distributors.
Common parts include cables, pulleys, upholstery, and selector pins. Good suppliers keep these items in stock so gyms can replace worn components quickly without taking the machine out of service for long periods.
At YR Fitness, we offer strong after-sales support and supply replacement parts for all our commercial equipment. Our team provides fast responses and reliable logistics, helping gym owners keep their machines running with minimal downtime.
20. Can one person assemble the machine, or does it need a team?
A seated abs crunch machine usually needs two people for safe and efficient assembly.
The parts are heavy and bulky, especially the steel frame and weight stack. While one person may handle smaller components, lifting and aligning the main structure is safer with two people. This also helps prevent damage during installation.
At YR Fitness, we design our commercial machines with assembly points that are straightforward, but we still recommend a two-person setup for stability and safety. Our equipment uses thick steel and heavy-duty parts, so having a small team ensures the machine is installed correctly.
