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ABOUT USYYZW Machinery Co., Ltd. was founded in 2012, which is located in the Ningbo City, Zhejiang Province. YYZW has 12000 square meters standard factory with 40 employees and our target is 100 employees.Equiped with advanced, high efficiency and high standard Japan and Taiwan brand machines, including kinds of CNC milling machines and turning machines, lathe machines, milling machines, surface grinder, internal and plain grinder, WEDMLS, WEDMHS, etc. Relevant inspection equipment are also fully equipped. Parts with tolerance ups to ±0.002mm can be supported.Professional in providing high precision turning and milling parts, rivets fasteners, and inserts for communication accessories, auto parts, sports equipment, lighting accessories, optical instruments, medical equipment, furniture parts, etc.Product descriptionLinear shaft featuresItemsLinear shaftFlexible shaftHollow shaftMaterialCK45, SUJ2CK45SUJ2Heat treatmentInduction hardenedNot hardenedInduction hardenedSurface hardnessHRC58±2HRC15±3HRC60±2Surface treatedHard chrome platedHard chrome platedHard chrome platedPrecisionh7, g6, h6h7, g6h7, g6, h6RoundnessMax3.0µmMax3.0µmMax3.0µmStraightnessMax5.0µmMax5.0µmMax5.0µmChrome thickness20-30µm30µm30µmRoughnessMax1.5µmMax1.5µmMax1.5µmProcess machinizedThreading, reduced shaft dia,coaxial holes drilled and tapped, flats-single or multiple, key way, snap ring grooves, radial holes drilled and tapped, chamferingLinear shaft descriptionYYZW offers linear shafting in a variety of different options to meet a wide range of customer needs. Available in hardened steel, CK45 material steel, SUJ2 material steel, hollow steel , inch and metric, Simplicity Shafting maintains the ideal surface finish for linear plain bearings and ball bearings.· Solid round shafting is available in inch sizes from 3/16" thru 4" and metric sizes from 3 mm thru 80 mm· Machining available upon requestHigh ReliabilityYYZW linear shaft has very straight quality control standards covering every production process. With proper lubrication and use, trouble-free operation for an extended period of time is possible.Smooth OperationThe high efficiency of linear shaft is vastly superior to conventional shaft. The torque required is less than 30%. Linear motion can be easily changed from rotary motion.High DurabilityRigidly selected materials, intensive heat treating and processing techniques, backed by years of experience,have resulted in the most durable linear shaft manufactured.Induction linear shaft, Flexible linear shaft,linear bearings shaft, hollow linear shaft,hardened linear shaft, chromed linear shaftApplicationFor delicate application in industrial application, machine tool and automation application.Linear Shafts - Technical Properties.Test linear shaft surface roughnessthe max roughness is Ra0.4umStraight the linear shaft straightness:We control the traighness 0.05mm of linear shaft 300mmTest hardness:S45C materail induction linear shaft, the hardness is HRC55-58GCr15 (SUJ2) materail induction linear shaft, the hardness is HRC58-63If flexible shaft, the hardness is based on the shaft material itselfTest the linear shaft dia precision, as usually, h7 is the normal tolerance in our stock, But we can offer g6, h6 precision too. if any special tolerance, we are able to customize them for you.Production FlowQuality and inspection:Fegular checking on line from production in each workshop, one special inspector inspect the goods in random during the period time of production. we are able to provide you test certificate and mill certificate if required Production steps :1) purchasing the material and forged the semi-products2) processing the semi-products in workshop3) assembling the goods4) testing the sealing in pressure and checking quality of the goods5) package6) deliveing the goods on time                   Stamping workshop                                      Mould workshop                                   Machining workshop                CNC Machining workshop                      General turret milling machine                     60T  Bending Machine            Turning workshop                             Texting Lab                                  3D Mesure Normally be packaged in brown box (customized color box packaging)About ExpressCorporate cultureCertificatesBrass Chemical Composition % (Mass Fraction) Symbol with * is DZR BrassDZR/DR(Dezincification Resistant)Brass are recommended for use with drinking  water distribution Quality Assurance:ISO9001: 2008 and ISO/TS16949: 2009 and GMC of TUV ( specially for auto industy) certification.Machining Equipment:Machining Center / CNC Lathes / Grinding Machines / Milling Machines / Lathes /Wire-cuts / Laser Cuts / CNC Shearing Machines / CNC Bending Machines / etc.Materials:Aluminum Alloy:5052 /6061/ 6063 / 2017 / 7075 / etc.Brass Alloy:3602 / 2604 / H59 / H62 / etc.Stainless Steel Alloy:303 / 304 / 316 / 412 / etc.Steel Alloy:Carbon Steel / Die Steel Q235 Q345 45# 35# 30CRMO 40CRMO