According to the materials performance, stretch bolster is adopted in the spindle for cotton and chemical fibers. In TFO spindle for wool spinning, rolling bearings are adopted on upside and underside to support, and in TFO spindle for real silk, on its upside, it is supported by the rolling bearing and a sliding bearing structure is adopted on its nether. Rotating parts of the spindle have been precision dynamic balance test, parts yarn passed are made of abrasion proof ceramics and advanced plasma spray painted surface. A kind of tension ball is used in spindle for chemical fibers and silk to control the tensile force. And in the spindle for cotton textile TFO spindle, it is controlled by tension capsule.Specially designed spindle root made the chemical fiber spindle and short fiber spindle exchangeable.Specification: Model Description Sizes diameter of bearing hole D2 D3 L M Application BD1104-1517A 146 short yarn TFO spindle Φ8.8 Φ34 Φ146 53 M25×1.5 Cotton textile BD1104-1517B 166 short yarn TFO spindle Φ8.8 Φ34 Φ166 53 M25×1.5 Cotton textile BD1104-1717 Bomb short yarn TFO spindle Φ8.8 Φ34 Φ166 53 M25×1.5 Cotton textilehigh denier-fibre BD1204-1717 Air-operated short fabric filament two-for-one twisting spindle Φ9 Φ34 Φ166 53 M25×1.5 Cotton fabricair operated