轴端类型Screw Typical Journal Ends轴端加工代号及特征 Screw Journal ends machining Symbol and Feature图例Diagram代号Symbol特征 Features固定端Fixed end(F)F联轴器端coupling end+锁紧螺纹thread lock+轴承位bearing block FM联轴器端coupling end(轴向螺纹孔axial threaded hole)+锁紧螺纹thread lock+轴承位bearing block FD联轴器端coupling end(铣单扁milling with one cu Read More »

ACME Thread Lead Screw SizesNominal diameter(mm)Lead (mm)Pitch (mm)No. of threadsLeft HandThread height(mm)Major diameter(mm)Pitch diameter(mm)Minor diameter(mm)Maximum processing diameter(mm)Max.Min.Max.Min.Max.Min.4.76（3/16-20)1.271.271√0.794.764.634.063.883.493.203.345.5(7/32-22)4.581.154√0.725 Read More »

MaterialMaterial StandardHeat Treatment StandardTypeBrandHigh Carbon Chromium Bearing SteelGCr15GB/T 18254-2002 GB/T 18579-2001JB/T 1255GCr15SiMnGCr15SiMoGCr18MoHigh Carbon Chromium Stainless Bearing SteelG95Cr18(9Cr18)GB/T 3086-2008JB/T 1460-2011G102Cr18Mo(9Cr18Mo)G65Cr14MoHigh Read More »

Nominal diameterHardness (HRC)>≤High-carbon chromium bearing steelHigh-carbon chromium stainless steel bearing steelHigh temperature bearing steel-3061~66≥5861~66305060~6550-58~64 Read More »

GradeDia.Tolerances and Ball Gauge Figure(μm)(mm)ToleranceBall Dia.Spherical ErrorSurface Roughness (Ra)Diameter VariationDistance of Dividers NumericalDividers NumericalG3-12±5.320.080.080.010.130.5-5...-0.50+0.5...+5G5-12±5.630.130.130.0140.251-5...-10+1...+5G10-25±9.750.250.250.020.51-9...-10+1.. Read More »

　DiameterWeight per 1000 pcsQuantity per 1 kgInchmmkgpcs-0.500.000511960780-0.680.00128781250-0.800.00209478470-1.000.00408245100-1.200.00705141840-1.300.00893111980-1.450.0124806451/161.58750.01662350-1.750.021845871-2.000.0326307003/322.38120.05518182-2.500.063715698-3.0000.1190911/83.1750.1317634 Read More »

Inch Series and Metric Threads Decarburization Limits Read More »

Trapezoidal screw pair (Tr thread, tooth Angle 30°) is a power transmission device. Generally according to the German standard DIN103 (DIN103 has been adopted by ISO as an international standard). The counterpart is the ACME threaded lead screw pair (tooth Angle 29 °) in British system. Generally us Read More »

TYPICAL PROPERTIES of ACETALSASTM or UL testPropertyAcetal CopolymerHomopolymerAF PTFE-filledPHYSICALD792Density (lb/in³) (g/cm³)0.0511.410.0511.410.0541.50D570Water Absorption, 24 hrs (%)0.20.20.2MECHANICALD638Tensile Strength (psi)9,50011,0008,000D638Tensile Modulus (psi)400,000450,000435,0 Read More »

TYPICAL PROPERTIES OF PEEK Read More »

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