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China Hydraulic Floor Spring Suppliers – D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus

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The key to our success is "Good Product Quality, Reasonable Value and Efficient Service" for Fire Door Controls, Auto Hold Door Closer, Dorma Door Closer 6696, "Quality", "honesty" and "service" is our principle. Our loyalty and commitments remain respectfully at your support. Call Us Today For even further info, get hold of us now.
China Hydraulic Floor Spring Suppliers – 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 Hydraulic Floor Spring Suppliers –  D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus detail pictures

China Hydraulic Floor Spring Suppliers –  D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus detail pictures

China Hydraulic Floor Spring Suppliers –  D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus detail pictures

China Hydraulic Floor Spring Suppliers –  D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus detail pictures

China Hydraulic Floor Spring Suppliers –  D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus detail pictures


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Adhering into the basic principle of "quality, assistance, effectiveness and growth", we have attained trusts and praises from domestic and worldwide client for China Hydraulic Floor Spring Suppliers – D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus , The product will supply to all over the world, such as: Pakistan, United States, Estonia, With the enterprising spirit of" high efficiency, convenience, practicality and innovation", and in line with such serving guidance of "good quality but better price, " and "global credit", we've been striving to cooperate with the automobile parts companies all over the world to make a win-win partnership.
  • This is a reputable company, they have a high level of business management, good quality product and service, every cooperation is assured and delighted!
    5 Stars By Barbara from Sacramento - 2017.09.09 10:18
    The enterprise has a strong capital and competitive power, product is sufficient, reliable, so we have no worries on cooperating with them.
    5 Stars By Albert from Jersey - 2018.06.28 19:27
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