Rigid Flange Coupling

The Rigid Flange Coupling is the standard model in Zhejiang Haineng Transmission Machinery's rigid coupling series. It is a fixed rigid connection component that uses fitted bolts to directly connect two flanged half-couplings, achieving rigid power transmission between shafts. This product features simple construction, low manufacturing cost, high torque capacity, and zero backlash. It is suitable for low-speed, heavy-load, shock-free applications requiring high shaft alignment accuracy. The coupling is widely used in large gearboxes, fans, compressors, rolling mills, and various heavy general-purpose machinery shaft-end connections.

The half-couplings are machined from high-quality forged steel through CNC turning and drilling. Flange faces are precision-turned for flatness, and bolt holes are reamed to ensure dimensional accuracy and positional precision. The fitted bolts create a precision fit with the hole walls, transmitting torque through shear and compression of the bolt shanks for reliable connection. The company maintains complete CNC machining capabilities and inspection equipment, with full-process quality control from raw material receiving to finished product dispatch and retained dimensional inspection records for every unit.

The rigid structure provides no elastic compensation capability, requiring high shaft alignment accuracy during installation. However, with no elastic elements, this coupling delivers no energy loss, no angular lag, high transmission accuracy, and direct response when transmitting high torque. For low-speed applications with high shaft system rigidity and no thermal expansion causing shaft displacement, the rigid flange coupling offers the most economical and reliable rigid connection solution. Flange bolts are manufactured to high strength grades with comprehensive anti-loosening measures for long-term continuous operation.

When ordering this coupling, customers need to provide shaft diameters at both ends, keyway dimensions, flange outer diameter, and bolt circle dimensions. The company can perform custom machining based on customer-provided interface dimensions. The minimum order quantity is 10 pieces, with standard sizes available in stock. Products come with a one-year warranty from shipment and support third-party inspections. Payment terms are 30% deposit with balance cleared before shipment, accepted in RMB and USD. Packaging includes anti-rust treatment and wooden crates for export shipping requirements.

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