KDI is the registered trademark of Tianjin Kedi Transmission System Co., Ltd., standing for Kinetic Drive Integration. The KDI brand covers the gears and racks, sprockets and chains, timing pulleys and belts, machined parts and assemblies that KEDI manufactures and supplies to equipment builders, maintenance markets and distributors.

The three letters describe how we approach power transmission: reliable motion, matched drives and integrated supply.
Power transmission parts engineered to carry torque and motion reliably — gears, racks, sprockets, chains and timing belts.
Matched drive components selected and supplied together, so pitch, module and fit are right the first time.
From a single part to a complete drive line: standard items, drawing-based custom parts and assembly support.

Spur, helical, bevel and worm gears; precision, engraving-machine and sliding-gate racks
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Standard, multi-strand, taper-bore and idler sprockets with matching chains
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Timing pulleys in common profiles with matching belts
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Shafts, gear shafts, flanges and bushings machined to drawing or sample
View detailsEvery KDI part is made to a defined drawing, material and heat-treatment specification.
Batch inspection records; dimension and hardness reports available on request.
Mainstream standard dimensions for easy replacement in existing equipment.
Selection help, drawing review and matched-set supply from one team.
We welcome distributors, equipment builders and trading companies to represent KDI products, with catalogue, technical data and sample support.
Discuss partnershipSend it to our engineering team — we confirm the specification and reply with a quotation.