218X2X23.5 black electrophoresis garage door torsion spring

1. Construction & Material • Made of spring steel for durability and tension retention. • Winding cones (at both ends) are die-cast aluminum—one for winding, the other stationary. 2. Color-Coding for Wind Direction • Red cone end = Right-wound spring (winds clockwise when installed on the left side). • Black cone end = Left-wound spring (winds counterclockwise when installed on the right side).(Note: Proper pairing is essential if using dual springs.) 3. Application & Selection Criteria • Designed for heavy garage doors, providing lifting force. • Must be selected based on spring dimensions (wire size, inner diameter, length) rather than door weight alone. • Regular-duty spring with a 12,000-cycle lifespan (typical for residential use; heavy-duty springs last ~20,000+ cycles). 4. Installation & Replacement • Used to replace worn/damaged torsion springs mounted above the garage door on the header. • Safety Warning: Torsion springs store extreme tension; improper handling can cause severe injury. Professional installation is recommended. 5.Additional Considerations • Cycle Life: 12,000 cycles ≈ 7–10 years for average use (open/close 5x/day). • Matching Springs: If replacing one spring in a dual system, ensure the new spring matches the existing one in wind direction, size, and torque. • Tools Needed: Winding bars, vise grips, and a ladder for safe installation. Would you like guidance on measuring an existing spring or determining the correct replacement size?

225X2X28 Automatic Torsion Spring Overhead Garage Door Spring with oil tempered surface treatment

1. Construction & Material • Made of spring steel for durability and tension retention. • Winding cones (at both ends) are die-cast aluminum—one for winding, the other stationary. 2. Color-Coding for Wind Direction • Red cone end = Right-wound spring (winds clockwise when installed on the left side). • Black cone end = Left-wound spring (winds counterclockwise when installed on the right side).(Note: Proper pairing is essential if using dual springs.) 3. Application & Selection Criteria • Designed for heavy garage doors, providing lifting force. • Must be selected based on spring dimensions (wire size, inner diameter, length) rather than door weight alone. • Regular-duty spring with a 12,000-cycle lifespan (typical for residential use; heavy-duty springs last ~20,000+ cycles). 4. Installation & Replacement • Used to replace worn/damaged torsion springs mounted above the garage door on the header. • Safety Warning: Torsion springs store extreme tension; improper handling can cause severe injury. Professional installation is recommended. 5.Additional Considerations • Cycle Life: 12,000 cycles ≈ 7–10 years for average use (open/close 5x/day). • Matching Springs: If replacing one spring in a dual system, ensure the new spring matches the existing one in wind direction, size, and torque. • Tools Needed: Winding bars, vise grips, and a ladder for safe installation. Would you like guidance on measuring an existing spring or determining the correct replacement size?

Custom Constant Force Springs from source manufacturer

Constant force springs offer stable tension and retraction capabilities. After undergoing coiling, they can create an uncoiling force. As a result, they find extensive use in various applications,like lifting spring,Electric fan ,computer,display lifting ,etc, including those that require smooth retracting, effective counterbalancing, and proper tensioning.

Factory Directly Supply Variable Load Force Spring

Variable force springs, which adjust their tension in response to changing load forces, are the perfect solution for shelf pusher systerms. Dowell offers complete customization for variable force springs, covering everything from design to final assembly.

Factory Directly Supply Constant torque force Spring

Standard constant torque spring applications typically employ a motor design comprising two drums and a pre-stressed flat strip winding. Dowell constant torque springs are precision-engineered from high-yield 301 stainless steel, offering superior corrosion resistance, high tensile strength, and exceptional hardness. When formed on our specialized spring coiling machines, these properties create controlled uncoiling resistance.

Dowell Stainless Steel Windup Custom Flat Spiral Power Torsion Volute Spring for Kitchenware Home Appliance

Conventional power springs have the capacity to generate rotational torsion in confined areas. Because of their outstanding retracting characteristic, they emerge as the optimal option for wheel reels. Thus, they are commonly used in retracting charger cables,home applicance,computer, tape measures, and toys. and so on. Customization flexibility is one of the product’s strengths. You can personalize the material,length, thickness, and width of the spring strip to suit your particular application.please send us your drawings or sample,let's make it real for you.

Dowell Hot Sale Factory Direct Sales Flat Volute Bimetal Spiral Coil Constant Force Spring Volute Spiral Spring

Visually, spiral torsion springs look like variable force springs. They go by various names, including clock springs, flat torsion springs, flat coil spiral springs, and motor brush springs, and are commonly produced using high carbon steel or high-yield 301 stainless steel strips.

Dowell Custom Flat Volute Spiral Coils constant force motor springs Carbon brush springs for power tool

Carbon brush springs, also known as electric motor brush springs, are extensively employed in electric motors. During the operation of an electric motor, they push the carbon brush against the commutator when the motor runs. They are widely used in power tool like electrric drill,electric saw，electric hammer,angle grinder,electric planer and so on

Dowell Factory Custom Metal Tube Double Push Button Spring Snap Clip V Shape Spring Clips

Spring clip is a part that has the elastic deformation ability through specific processing and molding of the material, produces deformation when it is stressed, and can return to the initial shape after removing the external force, so as to achieve a specific function.Usually materials are stainless steel, copper alloy, carbon steel and so on. Application: Electronic appliances/Automotive industry/Medical devices and so on.