Function summary:

      The new generation ETT-B series fastener friction coefficient testing machine is used for the total torque, end torque, thread torque, total friction coefficient, end friction coefficient, thread friction coefficient test，It can automatically measure the mechanical properties of bolts and nuts such as fastening torque, thread torque, supporting surface torque, fastening shaft force, torque coefficient K, total friction coefficient μtot, thread friction coefficient μth, and supporting surface friction coefficient μb。System composite GB, DIN,BS, EN, ISO ASTM and other international standards。

Relevant standards:

DIN946 - Determination of friction coefficient of bolts and nuts under specified conditions

DIN980 metal lock nut type principle and mechanical properties

DIN6914-1989 High strength large hexagon head bolt

DIN6915-1989 High-strength hexagon nuts for bolt connections of steel structures

DIN6916-1989 High strength bolted connections of steel structures - round washers

EN14399-2-2005 Preloaded high-strength structural bolt coupling -- Part 2 -- Preloaded compliance test

EN14399-3-2005 Preloaded high-strength structural bolt couples-Part 3 HR systems-Foreword to the list of bolts and nuts for coupling couples-EN14399-3-2005

EN14399-4-2005 Preloaded high-strength structural bolting pairs -- Part 4 HR systems -- bolts and nuts for coupling pairs

GB/T 3098.1-2010 Mechanical properties of fasteners bolts, screws and studs

GB/T32076.2-2015 Preloads-Connection pairs for high-strength bolted structures - Part 2 Preload adaptability

GB/T 5277-1985 Fasteners bolts and screws through holes

GB/T 5782-2000 hexagon head bolt

GB/T 16823.1-1997 Stress cross-sectional area and bearing area of threaded fasteners

GB/T 16823.2-1997 General rules for fastening threaded fasteners

GB/T 16823.3-2010 Fastener torque - clamping force test

GB/T 32076.3-2015 Preloaded high-strength bolted structural connection pairs - Part 3 HR type large hexagon head bolt and nut connection pairs

GB/T 32076.4-2015 Preloaded high-strength bolted structural connection - Part 4 HV type large hexagon head bolt and nut connection

GB/T 32076.7-2015 Preloaded high-strength bolt structure connection pair - Part 7 HV chamfered washers

ISO 2320-2015 Preset torque lock nut mechanical properties

ISO 16047-2013 Standard for tightening torque and clamping force

ISO898.1-2009 Mechanical properties of fasteners cast in carbon steel and cast steel - Part 1: Bolts

GB/T 6170-2015 Hexagon nut type 1

Verification regulation of JJG 269-2006 torsion testing machine

Technical parameters: