Double-Stage Friction Dampers – China′s Trusted Source for Superior Earthquake Resistance

• Customization: Available
• After-sales Service: Installation Guide
• Warranty: 1-3 Years
• Certification: DIN, JIS, GB, BS, ASTM
• Shipping Method: Shipping by Sea or as Per Buyer’s Request
• Quality Standard: International Standard
• Transport Package: Pallets, Rainproof Film Packaging
• Specification: 50KN-2000KN
• Trademark: Ansha, Hebei, China
• Origin: Hengshui, Hebei, China
• Production Capacity: 50000pieces/Year

Product Description

A two-stage friction damper is a device used to absorb and control vibrations. It usually consists of two friction surfaces, one of which is connected to the fixed part and the other to the movable part. When movable parts vibrate, friction dampers absorb and dissipate energy through friction, thereby reducing the amplitude of the vibration.

A double-stage friction damper works similarly to a single-stage friction damper, but it has a higher damping capacity. When the vibration amplitude is small, only one friction surface participates in the damping effect, providing a smaller damping force. When the vibration amplitude increases, the second friction surface will also participate in the damping effect, providing greater damping force. This dual-stage design allows the friction damper to provide better control at different vibration amplitudes.

Double-stage friction dampers are widely used in various engineering fields, such as building structures, bridges, mechanical equipment, etc. They can effectively reduce the vibration amplitude of the structure and improve the stability and safety of the structure. In addition, the dual-stage friction damper can be adjusted as needed to accommodate different vibration frequencies and amplitudes, allowing for more precise vibration control.

 

Detailed Photos

 

 

 

Product Parameters

 

Friction damper parameter table
Specifications and models	Slip displacement	Sliding damping force	Initial stiffness	variable stiffness displacement	Ultimate load	Second ladder stiffness	Product size
	(mm)	(kN)	(kN/mm)	(mm)	(kN)	(kN/mm)	(mm)
FD-100×0.5	0.5	100	200				890×240×148
FD-200×0.5	0.5	200	400				910×340×153
FD-300×1.0	1.0	300	300				910×340×153
FD-400×1.5	1.5	400	266.6				910×340×153
FD-200×0.5-350	0.5	200	200	10	350	7.5	910×340×153
FD-300×1.0-650	1.0	300	300	10	650	17.5	910×340×153
FD-400×1.5-850	1.5	400	266.6	10	850	22.5	910×340×153

 

Packaging & Shipping

 

 

 

Company Profile

 

Hebei Ansha New Material Technology Co., Ltd. is located in Binhu New District of Hengshui City. We specialize in R&D and production of seismic isolation and damping products for both buildings and bridges. Our products include rubber bearings, spherical bearings, friction pendulum systems, fluid viscous dampers, tuned mass dampers, buckling-restrained braces, friction dampers and metallic dampers. In addition, we manufacture bridge expansion joints and fiber-enhanced plastic products.
We have established state-of-the-art physical and chemical laboratories and specialized production lines. Our company operates in full compliance with the ISO9001:2015 Quality Management System, ISO14001:2015 Environmental Management System, and ISO45001:2018 Occupational Health and Safety Management System.
Guided by the anti-seismic design principle of "resisting collapse in a major earthquake, enabling repair in a moderate earthquake, and remaining undamaged in a minor earthquake", we offer our customers a comprehensive array of services. These services include technical consultation, structural analysis and calculation, design optimization, research and development, manufacturing, installation guidance, performance monitoring, maintenance and repair.
 

 

Our Advantages

1. Advanced equipment. Our workshop has more than 100 pieces of the most advanced equipment to ensure timely delivery of large orders. In addition, standardized production can be guaranteed to comply with international standards.
2. Experienced and skilled technical and production teams have professional production skills and many years of experience. Our team of workers can improve production efficiency, shorten the production cycle, and thereby reduce costs.
3. Complete product models, we have a variety of bearings for construction, including basin bearings, elastic skateboard bearings, spherical bridge bearings, high damping spherical bearings, lead rubber bearings, etc.
4. Exquisite packaging and timely delivery. All products are inspected by quality inspection personnel before loading, and then the quality inspection data are archived and retained. Our company also produces isolation products and vibration control products.
5. The professional sales team has a comprehensive understanding of shock absorption and isolation products, good English speaking and writing skills, and excellent communication skills to provide the best solutions to your problems. You can ask them for recommendations, customized services, and any other product information you want to know about.
 

FAQ

1. Are you a trading company or manufacturer?
    We are manufacturer and have our own factory
2. What certificate do you get?
    ISO9001:2015 quality management system certification, 
    ISO14001:2015 environmental management system certification, 
    ISO45001:2018 occupational health and safety management system certification
3. What is your MOQ?
    1 pieces
4. What is your delivery time for mass production?
     Customized product design time: Based on the performance parameters provided, the detailed design of the product will be           completed within 7 working days
     Peak season delivery time: 1.5~2 months after confirmation of product processing drawings
     Off-season delivery time: Within 25~35 working days after confirmation of product processing drawings
5. Can you do OEM?
      We can. OEM orders are welcome.
6. What is your policy sample?
    We provide free scale samples, and buyers bear the express delivery costs.
7. How long does it take to prepare samples?
     About 7-10 working days