50N.m平面蜗卷弹簧扭矩疲劳试验，用于验证涡卷弹簧疲劳试验后扭矩损失率。疲劳试验扭矩荷载9.30N.m、11.1N.m、20.1N.m循环交变加载，在弹簧疲劳试验过程中测试涡卷弹簧扭转力矩、涡卷弹簧扭力角度、涡卷弹簧回位力矩衰减率、涡卷弹簧交变荷载耐久性，实时绘制涡卷弹簧扭矩-转角曲线。

50N.m蜗卷弹簧扭转疲劳试验机；50N.m涡卷弹簧疲劳寿命测试；50N.m发条弹簧扭转疲劳试验机；平面蜗卷弹簧回位扭矩测试；HRJ Tester；座椅弹簧扭矩疲劳试验；调角器弹簧扭转疲劳试验；M1车辆座椅弹簧疲劳试验；M2调角器弹簧扭矩疲劳试验；M3座椅弹簧扭转疲劳试验；齿板调节机构弹簧疲劳试验；卧具调角器弹簧疲劳试验；电动调角器弹簧疲劳试验；手动调角器弹簧疲劳试验；连续式调角器弹簧疲劳试验；非连续式调角器弹簧疲劳试验；体位支撑弹簧疲劳试验机；50N.m蜗卷弹簧静态扭矩试验；50N.m蜗卷弹簧疲劳强度试验；有级调角器弹簧扭矩试验；无级调角器弹簧疲劳试验；50N.m片簧扭转疲劳试验机；弹簧疲劳试验后扭矩损失率小于15％；弹簧试验扭转角实时测试；弹簧极限扭转角测试；弹簧扭矩扭转角曲线绘制；接触型蜗卷弹簧扭转试验机；非接触型蜗卷弹簧扭矩疲劳试验；HRJ Tester；玻璃升降器弹簧扭转试验机；吸尘器弹簧扭转试验机；卷尺弹簧扭转试验机；供弹器弹簧扭转试验机；钟表弹簧扭转试验机；仪表弹簧扭转试验机；安全带收卷弹簧试验机；

JT/T460-2001客车座椅靠背调角器技术条件；QC/T805-2008乘用车座椅用滑轨技术条件；QC/T831-2010乘用车座椅用电动滑轨技术条件；HRJ Tester；QC/T844-2011乘用车座椅用调角器技术条件；GB/T30661.3-2015体位支撑装置的静态、冲击和疲劳强度测定；ISO 16840-2；ISO 16840-3；ISO 7176-15；ISO 7176-26；GB/T18029.15-2008；GB/T18029.26-2014；GB/T30661.2-2014；

Flat Spiral Spring Torsion Fatigue Test；Spring Torsion Fatigue Tester；Spring Torque Torsion Angle Curve；Passenger Car Seat Spring Tester；HRJ Tester；Spiral Spring Tester；Flat Spiral Spring Tester；Contact Flat Spiral Spring Tester；Non-contact Flat Spiral Spring Tester；Spring Working Torsion Angle；Spring Ultimate Torsion Angle；Spring Test Torsion Angle；Recliner Spring Tester；Discontinuous Recliner Spring Tester；HRJ Tester；Continuous Recliner Spring Tester；Core Part Spring Tester；Upper Bracket Spring Tester；Lower Bracket Spring Tester；Technique specification of backrest angle adjuster for bus seat；Passenger car-Technique specification of slide for seat；Technical Specification of Power Slide for Passenger Car Seat；HRJ Tester；Technical specification of recliner for passenger car seats；Wheelchair seating-Part3:Determination of static,impact and repetitive load strengths for postural support devices；Multiposition Spring Fatigue Tester；Spring High Low Temperature Fatigue Testing；Gas Spring Fatigue Testing System；Horizontal Spring Torsion Fatigue Tester；Torsion-Bar Spring Fatigue Tester；China Spring Tester；Testing Machine Service Center；Mechanics Tester Manufacturer；Testing Machine Fittings Supply Center；Design and Manufacture Center for Special Test Accessories；Asia Spring Tester；World Spring Tester；International Type Spring Tester；Shandong Society For Measurement；Jinan HengRuiJin Testing Machine Co.,Ltd.；

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