Features: 1) The blades of M4 series covering spindles are supported by two exclusively imported bearings 2) With upper and lower dampener rubbers to absorb the vibration and reduce noise 3) The high-speed covering spindles have rational structure, in which special air circuit can be formed and the air can cool the bearings 4) The upper and lower connection covers can fix the radial and axial directions 5) Convenient operation Application As a key part of covering machine ,the Series Covering Spindle is used for wind the chemical fibers as true silk ,polyester lilament , cotton and wool fibers on the spandex core (single color or double colors ) .Then the covering yarn will have both the elasticity of spandex and appearance and handle of outpacking yarn ,it can be used as the perfect yaw material for stretch woven fabric woven fabric and knit. Main specifications Modle Old Modle (mm) Diameter of spindle tape wheel (rpm) Max.speed of spindle Bolster(mm) spindle type Fineness Of core yarn(Dtex) Fineness Of core yarn(Dtex) Twisting direction D*d*L BF3102 M4BA φ25 22000 φ76×φ36×φ140 10-70 10-150 S or Z twisting BF3103 φ22 22000 φ76×φ36×φ140 BF3107 M4DA φ25 18000 φ76×φ36×φ140 BF3108 M4DA1 φ25 17000 φ84×φ36×φ140 BF3109 M4DA2 φ25 16000 φ84×φ36×φ140 BF3111 M4FA φ25 15000 φ84×φ36×φ140 BF3116D M4ZD φ25 20000 φ76×φ36×φ140 BF3135 φ30 10000 φ82×φ47.5×φ90 BF3140 φ20 22000 φ67.5×φ32×φ100 BF3141 φ22 18000 φ84×φ36×φ140 BF3180 φ22 20000 φ76×φ36×φ140 BF3181 φ20 22000 φ67.5×φ32×φ100 BF3117 M5BA φ25 22000 φ90×φ40×φ135 10-70 10-150 S or Z twisting BF3121 M5DA φ25 18000 φ90×φ40×φ150 BF3122 M5DA1 φ25 17000 φ90×φ40×φ150 BF3123 M5DA2 φ25 16000 φ90×φ40×φ150 BF3125 M5FA φ25 15000 φ90×φ40×φ150 BF3150 φ20 22000 φ65×φ27×φ106 Main technical features The spindle is supported by two imported special bearing and upper and lower rubber damps ,which can reduce shock absorbing and noise reduction .The high-speed covering spindle has a reasonable struture , which is provided with a special air loop inside its inner chambe low for air cooling of the bearing . Upper and lower coupler can fix the yarn guide cylinder in radial and axial direction which is easy to be operated.