Import Extension Spindles — Buy in Bulk from Supplier in China

Extension Spindles from Jilin Senfeng Pipe Co., Ltd. are precision-engineered rotating components designed for industrial machinery requiring extended axial reach. These spindles are manufactured to standard diameters ranging from 25mm to 60mm, with lengths between 300mm and 1200mm, and feature hardened steel shafts with surface finishes of 0.8μm Ra or better. The design supports axial load capacities up to 15kN and radial loads up to 8kN, compatible with ISO 1219-1 hydraulic and pneumatic actuator systems.

The spindles are typically made from AISI 4140 or equivalent alloy steel, heat-treated to achieve a hardness of 28-32 HRC, ensuring resistance to deformation under sustained operational stress. Surface treatments include chrome plating or nitriding for corrosion resistance and reduced friction, common in applications subject to dust, moisture, or cyclic loading. These specifications align with typical industry benchmarks for extension spindles used in automated assembly lines and CNC tool changers.

These components are purchased by manufacturers in automotive, packaging, and material handling sectors that require repeatable linear motion in confined spaces. Buyers commonly order in batches of 50 to 500 units, with packaging in individual polyethylene sleeves inside cartons. Trade terms include FOB Dalian or CIF port of destination, with lead times of 20 to 30 days after order confirmation. Custom lengths and keyway configurations are available upon request, subject to tooling fees.

Jilin Senfeng Pipe Co., Ltd. is based in Panshi, Jilin Province, China, with a registered address at B-1, Jiancaijiayuan, Fukang Road. The company is classified as a harbor-tier supplier, indicating active participation in export logistics. Its profile confirms manufacturing capability in metal components but does not specify production volume, workforce size, or certifications such as ISO 9001. The listing does not mention past clients, export history, or testing facilities.

The supplier specializes in tubular and rotary metal parts, with extension spindles listed as one of several product lines. No details are provided about internal quality control processes, in-house machining capacity, or R&D activity. Response rate and average response time are recorded as zero, suggesting limited buyer communication capacity. Buyers should verify production capabilities directly before placing orders.