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China Heavy Duty Floor Spring Manufacturers – D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus

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Fast and great quotations, informed advisers to help you choose the correct product that suits all your preferences, a short creation time, responsible top quality control and different services for paying and shipping affairs for Device To Keep Door Closed, Door Closer Components, Auto Door Closer, Welcome your enquiry, greatest service is going to be provided with full heart.
China Heavy Duty Floor Spring Manufacturers – 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


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China Heavy Duty Floor Spring Manufacturers –  D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus detail pictures

China Heavy Duty Floor Spring Manufacturers –  D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus detail pictures

China Heavy Duty Floor Spring Manufacturers –  D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus detail pictures

China Heavy Duty Floor Spring Manufacturers –  D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus detail pictures

China Heavy Duty Floor Spring Manufacturers –  D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus detail pictures


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Our goal is usually to deliver high quality items at aggressive price ranges, and top-notch service to shoppers around the entire world. We're ISO9001, CE, and GS certified and strictly adhere to their high quality specifications for China Heavy Duty Floor Spring Manufacturers – D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus , The product will supply to all over the world, such as: Surabaya, Brasilia, Lisbon, Our Company has professional engineers and technical staff to answer your questions about maintenance problems, some common failure. Our product quality assurance, price concessions, any questions about the products, Please feel free to contact us.
  • We are old friends, the company's product quality has been always very good and this time the price is also very cheap.
    5 Stars By Belinda from Oman - 2018.12.14 15:26
    The company keeps to the operation concept "scientific management, high quality and efficiency primacy, customer supreme", we have always maintained business cooperation. Work with you,we feel easy!
    5 Stars By Phoenix from Mombasa - 2018.05.22 12:13
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