Double layer bobbin

This double layer bobbin is constructed from punched and welded steel plates, designed for high rigidity and rotational stability in industrial winding applications. It is engineered to maintain dimensional accuracy under load, with no deformation reported under standard operating tensions. The bobbin is not coated or plated, and its surface finish is achieved through precision mechanical machining to ensure smooth yarn passage.

Steel grades used in such bobbins are typically Q235 or 1045 carbon steel, chosen for tensile strength and machinability. The double-layer structure allows for higher yarn capacity while minimizing axial deflection. Standard tolerances for inner and outer diameters are ±0.1mm, and concentricity is maintained within 0.05mm per ISO 1940-1 Grade G6. These are typical industry benchmarks for precision bobbins used in textile and packaging machinery.

Buyers include manufacturers of textile spinning equipment, wire winding machines, and packaging line operators requiring consistent yarn tension control. The bobbin is compatible with automated feed systems and designed for reuse over multiple production cycles. Trade terms are typically FOB Shanghai or Ningbo, with lead times of 25 to 30 days. Custom diameters and flange heights are available upon request, but require tooling confirmation and minimum order quantities to be verified directly with the supplier.

Ylem International Trade Co., Ltd. is registered in Yangzhou, Jiangsu Province, with an office address at Room 104, 25th Building, The 2nd Village of Hongfu Residential Quarter. The company operates as a trading entity focused on industrial components, with verified business registration and a physical address listed on trade platforms. No factory ownership is indicated, and there is no public information about production capacity, employee count, or years in operation.

The listing states the product is engineered for industrial use, but does not confirm whether the supplier manufactures the bobbins or sources them from third-party factories. No certifications, test reports, or quality control procedures are referenced. Buyers should request production photos, dimensional drawings, and dynamic balance test certificates to validate performance claims. Response rate data is currently unavailable, so direct communication should be initiated before placing orders.