Our constant force springs are the premier solution for modern window balance systems, providing the consistent lifting force necessary to perfectly counterbalance window sashes. Unlike traditional block-and-tackle systems, these precision-rolled springs deliver a uniform upward force throughout the entire travel range, ensuring sashes remain stationary at any height without drifting or slamming.
Our springs are manufactured from high quality stainless steel, capable of exceeding 20,000 to 100,000 fatigue cycles. To ensure reliability in diverse climates, each spring features advanced industrial coatings for superior corrosion resistance against humidity and salt air. With a customizable capacity designed to balance sashes from 3kg to 45kg, these springs offer an inestimable asset for manufacturers seeking a blend of superior durability and competitive, market-leading pricing.
The primary advantage of our Constant Force Spring is its space-efficient design, which fits into slim window frames to maximize glass area and aesthetic appeal. Its flexible sizing and precise force matching make it the go-to choice for builders and contractors requiring smooth, finger-tip operation.
Key Applications Across Markets:
● Residential Housing: Ideal for double-hung and single-hung windows in single-family homes and high-rise apartments.
● Commercial Infrastructure: Trusted in office buildings and institutional windows for schools and hospitals where safety and ease of use are paramount.
● Coastal & Harsh Environments: Engineered to withstand the corrosive environmental exposure found in marine and high-humidity areas.
● New Construction: Seamlessly integrates into a broad spectrum of window types, ensuring reliable handling and reduced structural stress.
As a leading Manufacturer, Exporter, and Supplier, we provide streamlined logistics for a diversified global market. We maintain a robust supply ability with a focus on delivering professional-grade value and international transparency.
● Global Footprint: We proudly serve export markets across Europe, North America, the Middle East, and Asia, with efficient dispatching from India’s primary FOB ports.
● Secure International Logistics: Every order is meticulously packaged with detailed specifications to ensure accurate valuation and protection during secure transport.
● Competitive Pricing: We offer unbeatable deals and special sale price arrangements for bulk inquiries, ensuring your project stays within budget without sacrificing quality.
● Reliable Timelines: Our responsive team guarantees prompt delivery timeframes and clear communication, making us a trusted partner for large-scale construction and manufacturing schedules worldwide.





Minimum Order Quantity : 100 Pieces
Surface Finish : Polished
Style : Other, Coiled
Fatigue Test : Passed 100,000 cycles
Capacity : 3.0 N
Wire Diameter : 0.20 mm
Minimum Order Quantity : 100 Pieces
Surface Finish : Polished / Zinc Plated
Style : Other, Constant Force Spring
Fatigue Test : Over 10,000 Cycles
Capacity : Up to 50 kg
Wire Diameter : Customizable (Standard: 0.4 mm 1.0 mm)
Minimum Order Quantity : 100 Pieces
Surface Finish : Polished
Style : Other, Constant Force Spring
Fatigue Test : Over 10,000 Cycles
Capacity : Up to 500 N
Wire Diameter : 0.2 mm to 0.5 mm
Minimum Order Quantity : 100 Pieces
Surface Finish : Polished
Style : Other, Coil (Helical)
Fatigue Test : Yes
Capacity : 30100 N
Wire Diameter : 1.2 mm