Barbell Factory

Штанговый завод

As one of the largest gym equipment Manufacturers in China, QINGDAO STRENX fitness equipment company produces & supplies a huge range of custom barbells. Such as the Olympic Barbell Bar, Cardio Bumper Barbell Set, Specialty Barbells (Log Bars, Multi-grip Swiss Bar, Supra Curl Bar, Hex Trap Bar, Olympic tricep bar, Safety Squat Bar, Aluminium Kids Bar, & More), and so on.

Certifications passed

Product:SGS REACH ROHS CE SLCP FEM 7P QMS CCC FREE

Factory: ISO9001,ISO14001,ISO45001

Barbell factory production capacity summary

Line NameDaily OutputMonthly OutputProduction Lead Time
Barbell shaft producing line300 sets10400 sets10 days
Sleeve producing line600 sets20800 sets7 days
Packaging production line300 sets10400 sets7 days

Barbell Bar Production Process

The process of making a barbell bar typically involves several key steps, each crucial for creating a durable and reliable piece of equipment. Here’s a simplified overview of the barbell bar manufacturing process:
  1. Material Selection: Barbell manufacturers begin by choosing high-quality steel, which is the primary material for making barbell bars due to its strength and flexibility.
  2. Cutting: The steel is cut into the appropriate lengths for the type of barbell being made, such as standard or Olympic size.
  3. Forging and Bending: The cut steel is heated and then forged and bent into the straight bar shape. This step may also involve shaping the sleeves where weights will be loaded.
  4. Machining: After forging, the bars are machined. This includes drilling the holes for the sleeves, threading the ends if needed, and ensuring the bar is perfectly straight.
  5. Heat-treating: To increase strength and reduce the risk of bending, the bar is heat-treated. This involves various quenching and tempering steps.
  6. Surface Treatment: The bar is often given a surface treatment, such as chrome plating, cerakote coating, or black oxide, to protect against rust and corrosion.
  7. Knurling: Patterns are cut into the bar where the lifter’s hands will go, providing grip. This is known as knurling.
  8. Assembling: End caps and any bearings or bushings are added to the sleeves to ensure smooth rotation during lifts.
  9. Finishing packaging: Finally, logos or labels might be added, and the barbell bar be cleaned and inspected one last time before being packaged for shipment.
  10. Qingdao STRENX company barbell factory shows the details of the barbell-making process below:
barbell bar raw material

barbell bar raw material

barbell bar surface treatment

barbell bar surface treatment

barbell bar straightening

barbell bar straightening

barbell bar heat treatment

barbell bar heat treatment

barbell bar knurling

barbell bar knurling

barbell bar polishing

barbell bar polishing

barbell bar sleeve weding

barbell bar sleeve weding

barbell bar bearing installation

barbell bar bearing installation

barbell bar packaging

barbell bar packaging

Barbell bar quality control and inspection

Quality control and inspection of barbell bars are crucial steps to ensure each product meets the industry standards, safety requirements, and customer expectations. Here are the four most important quality inspection indicators, tensile strength, surface treatment, acid and alkali resistance test, and impact strength test.

Barbell Bar Tensile Strength Test

Barbell Bar Tensile Strength Test

Corrosion Test Salt Fog Chamber

Corrosion Test Salt Fog Chamber

Metal ultrasonic flaw detector

Metal ultrasonic flaw detector

Barbell bar drop testing machine

Barbell bar drop testing machine

Customer concern and barbell manufacturer solution

1. Bending or Deformation: Over time or under excess weight, a barbell bar may bend or become deformed. This is often due to lower-grade steel or inadequate heat treatment.

Solution: We use higher-grade 42CrMo steel as material and ensure proper and perfect heat treatment protocols,after 2 times of straightening and 2 times of heat treatment, it is ensured that the barbell reaches the specified loading capacity (lbs) and higher tensile strength(Kpsi).

2. Plating peeling off, corrosion, and rust: Barbell bars can develop rust if the metal is exposed to moisture, particularly if the protective coating is compromised.

Solution: Use vacuum electroplating and three-layer electroplating to ensure the strength and adhesion of the electroplated layer and increase the service life of the coating.

3. Inconsistent Knurling: If the knurling is uneven or too aggressive, it can cause discomfort or injury to the user. Too smooth knurling can result in a lack of grip.

Solution: Using automatic high-precision knurling machine,ensure precise manufacturing processes and regular checks on knurling equipment. Adjust the knurling pattern based on feedback from lifters

4. Sleeve Malfunction: The rotation mechanism of the sleeve can become stuck or too loose, affecting the lifting experience.

Solution:Use quality bearings or bushings and ensure proper assembly, use stainless steel machined needle roller bearings instead of traditional stamped bearings to ensure a seamless and steady rotation, enhancing the barbell's lifespan. These bearings also offer a dampening quality that diminishes the sound produced when the barbell is dropped.

Note: Please feel free to give your inquiry in the form below. We will reply to you with details within 12 hours!

    Прокрутить вверх