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Buy Heavy Duty Floor Spring Supplier – D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus

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It is a good way to enhance our products and solutions and repair. Our mission will be to build creative solutions to consumers with a great experience for Door With Panic Bar, Automatic Door Closer Parts, Dorma Closers, Our tenet is clear all the time: to deliver high quality product at competitive price to customers around the world. We welcome potential buyers to contact us for OEM and ODM orders.
Buy Heavy Duty Floor Spring Supplier – D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus Detail:

We are a professional Door spring manufacturer and supplier in China, specializing in providing high quality customized products. We warmly welcome you to wholesale bulk Door spring stock from our factory. Contact us for free samples.

Our value message is QUALITY and SERVICE
10 years of hardware manufacturing experience
Can customized any size and color
Compensation if late delivery or bad quality
Competitive prices
Experienced professionals
24 hours online after-sales service
OEM &ODM offered
We boast our own R & D, production, exports, and logistics team

Performance parameters of D-7300
Model D-7300
Applicable Standard
Engine Cylinder Single
Max Door Width 1200mm
Max Door Weight 150kg
Max Open Degree 135°
Stop-Device 90°
Latching Speed Adjustment 0°-20°
Closing Speed Adjustment 20°-90°
Application Temperature  -40° to 60°
Dimension:Length*Width*Height 273mm*126mm*70mm
Material of Cover Plate 304SS or 201SS
Thickness of Cover 1.2mm
Finish SSS/PSS/Matt Black
Service Life Over 500,000cycles
Warranty 3 years

A floor spring is typically concealed under the floor to operate a door which requires to be closed after use, for reasons including convenience, safety or security.

Floor springs operate using what we call a CAM action mechanism. When the door is opened, regardless of in which direction, the bottom arm, which is fixed to the door, rotates the CAM spindle. This, in turn, rotates the CAM itself. The CAM is connected to the piston and, when it’s rotated, pulls the piston head


Product detail pictures:

Buy Heavy Duty Floor Spring Supplier –  D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus detail pictures

Buy Heavy Duty Floor Spring Supplier –  D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus detail pictures

Buy Heavy Duty Floor Spring Supplier –  D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus detail pictures

Buy Heavy Duty Floor Spring Supplier –  D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus detail pictures

Buy Heavy Duty Floor Spring Supplier –  D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus detail pictures


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Sticking towards the principle of "Super High-quality, Satisfactory service" ,We've been striving to become a superb business partner of you for Buy Heavy Duty Floor Spring Supplier – D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus , The product will supply to all over the world, such as: Honduras, Croatia, St. Petersburg, because of our company has been persisting in the management idea of "Survival by Quality, Development by Service, Benefit by Reputation" . We fully realize the good credit standing, the high quality products, the reasonable price and the professional services are the reason that the customers choose us to be their long-term business partner.
  • The company account manager has a wealth of industry knowledge and experience, he could provide appropriate program according our needs and speak English fluently.
    5 Stars By Aaron from Seattle - 2018.06.03 10:17
    It is not easy to find such a professional and responsible provider in today's time. Hope that we can maintain long-term cooperation.
    5 Stars By Elaine from Mali - 2017.05.02 18:28
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