German rft springs rft models rft prices

rft springs are a special type of extension spring, suitable for applications with large elongation and constant load. Constant-force springs consist of spiral metal strips; the inner side of the strip is curved so that each coil wraps tightly around the adjacent inner coil. When the metal strip is stretched (twisted), internal stress resists the load force, similar to ordinary extension springs, but the spring rate remains nearly constant (zero). See the load/torque diagram. In use, an ID is typically used to wind this spring tightly onto a drum, with its free end connected to the load, acting like a counterweight. Alternatively, the operation can be reversed: the free end is fixed, and the spring itself provides the working force, similar to carbon brushes in electrical devices.

rft spring surface treatment

1) Black oxide treatment: This surface treatment provides a black finish; black oxide is primarily for aesthetic improvement rather than corrosion resistance. 2) Chrome plating: Chrome plating is mainly applied to carbon steel products to enhance corrosion resistance. 3) Oil impregnation: Oil impregnation is a standard treatment for carbon steel parts to prevent rust during transportation and storage. 4) Passivation: Passivation is a cleaning method for stainless steel materials. 5) Phosphate coating: Phosphating offers better corrosion resistance than black oxide. 6) Ultrasonic cleaning: This is a standard surface treatment for stainless steel materials. 7) Vibratory deburring: Used to remove sharp edges from products.

rft spring classification

1) Torsion springs: Torsion springs utilize the principle of leverage, storing significant mechanical energy by twisting or rotating elastic materials with high flexibility and toughness. They withstand torsional deformation, with coils either closely wound or spaced apart. The ends of torsion springs are formed into various shaped arms, ranging from single to double torsion, or other torsion bar configurations depending on the design. Torsion springs are commonly used in balancing mechanisms in machinery and are widely applied in automotive, machine tool, and electrical industries. 2) Compression springs: Compression springs are helical springs that withstand axial compressive forces. They are generally categorized into constant-pitch and variable-pitch springs. Shapes include cylindrical, conical, convex, concave, and some non-circular forms. There is a gap between coils; under external load, the spring compresses and stores energy. Variable-pitch springs are becoming more common, offering different performance characteristics in various environments compared to constant-pitch springs. 3) Carbon nanotube springs: Carbon nanotube springs can have diameters up to hundreds of micrometers and lengths of several centimeters. Their spun structure has broad application prospects, including stretchable conductors, flexible electrodes, micro strain sensors, supercapacitors, integrated circuits, solar cells, field emission sources, and energy-dissipating fibers. This enables the creation of visible carbon nanotube electronic devices and potential medical applications, such as tension-sensing bandages. This novel structure can also be developed into multifunctional carbon nanotube fiber composites. 4) Extension springs: Extension springs are helical springs that withstand axial tensile forces, typically made from round wire. When unloaded, the coils are usually tightly closed with no gap. They operate using the restoring force (tension) after elongation to control component movement, store energy, or measure force, and are widely used in machines and instruments. Hook types include side hooks, long hooks, English hooks, German hooks, semi-circular hooks, and duckbill hooks. Materials include stainless steel, music wire, high-carbon steel, phosphor bronze, beryllium copper, and oil-tempered alloy spring steel. 5) Air springs: Air springs are non-metallic springs that use compressed air in a flexible sealed container to achieve elasticity. They are broadly classified into bladder and diaphragm types. Air springs offer excellent elastic characteristics; when used in high-end vehicle suspension systems, they significantly improve ride smoothness and comfort. Consequently, they are widely used in automobiles and railway locomotives. Due to their advantages over standard steel springs, air springs are also applied in various mechanical equipment and precision instruments.

rft spring features and applications

Features: Compared to standard compression or extension springs, their force output is highly constant, providing a nearly linear force curve. This ensures product performance remains stable despite force variations. Their compact design allows for space savings in narrow areas, enhancing aesthetic design possibilities. Constant-force spring applications: Adjustable fans, LCD monitors, sliding windows and doors, supermarket automatic checkout counters, motor carbon brush holders, cables, stapler springs, power tools, car ashtrays, locomotive carbon brush accessories, medical devices, mobile phone holders, etc.

Weidou Intelligent Technology specializes in selling German rft compression springs, rft extension springs, rft helical springs, rft wave springs, rft constant-force springs, rft torsion springs, rft bending springs, rft disc springs, rft ring springs, rft leaf springs, rft torsion bar springs, rft tension springs, rft retaining rings, rft tension springs, rft die springs, all original imports from Germany. Customers are welcome to inquire and order.