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Date：
2026-09-23
KOLDBAN Expands Its Coupling Manufacturer Portfolio with KCG, KCS, KCD and KCU Product Lines
Changzhou, China — KOLDBAN Drive Technology (Changzhou) Co., Ltd., a comprehensive power-transmission company integrating gear, rack, reducer and drive-system solutions, is strengthening its position as a coupling manufacturer through its four signature coupling series — KCG (drum gear), KCS (snake-spring), KCD (diaphragm) and KCU (universal-joint) — each designed for specific torque, misalignment and environmental requirements.
Why Coupling Selection Matters
A coupling is the critical link between motor and driven machine. Choosing the right coupling manufacturer therefore protects bearings, seals and gear teeth from harmful shock loads, misalignment and vibration over the lifetime of the equipment. KOLDBAN, as an experienced coupling manufacturer, supplies four product families so that engineers can match the coupling exactly to the application.
KCG Drum Gear Couplings
KCG drum-gear couplings transmit very high torque with low inertia, while accommodating angular, parallel and axial misalignment. They are widely used in heavy industries such as steel rolling mills, cement kilns, large pumps and mining conveyors — applications where any coupling failure is prohibitively expensive.
KCS Snake-Spring Couplings
The KCS series uses a curved-spring element that flexes within the hub, providing torsional flexibility and damping to protect connected equipment from shock loads and torsional vibration. Typical applications include crane hoists, paper machines, compressors and mixer drives.
KCD Diaphragm Couplings
KCD diaphragm couplings use multiple stainless-steel diaphragms to transmit torque with zero backlash and zero maintenance, making them ideal for servo-driven precision machinery, CNC spindles, test rigs and high-speed pumps.
KCU Universal-Joint Couplings
KCU universal-joint couplings are engineered to handle large angular misalignment in applications such as drive shafts, rolling-mill stands and vehicle-test equipment where the shafts are not co-axial.
Quality, Stock and Customisation
All four series are produced under KOLDBAN's ISO 9001 quality-management system, with full material traceability and dynamic-balancing data available on request. Standard KCG, KCS, KCD and KCU units are kept in stock for short lead times, while custom bore combinations, special materials and stainless-steel variants are available for demanding environments.
“By offering four distinctly engineered series, KOLDBAN gives customers the freedom to choose the right coupling for each application — always backed by one coupling manufacturer with one warranty.”
Selection guides, CAD downloads and RFQ forms are available at http://www.koldban-drive.cn/.
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