www.jbj.co.uk/couplings.html#flender Zapex ZN Series Power Ratings Torsionally Rigid Gear Couplings 22 #DriveLineHarmony Size Rated Torque Maximum Torque Overload Torque Fatigue Torque Torsional Stiffness Permitted 211 19200 38400 76800 7680 16600 1 T T T T C ΔK KN Kmax KOL KW Tdyn a 250 30680 61360 122720 12270 27300 1 424 162500 325000 650000 64800 156000 1.5 Axial Shaft ZW Misalignment Nm Nm Nm Nm kNm/rad mm 181 11000 22000 44000 4400 9200 1 107 2210 4420 8840 884 1400 1 83 1020 2040 4080 408 500 1 130 4020 8040 16080 1600 2500 1 156 6600 13200 26400 2640 5800 1 274 43550 87100 174200 17400 41500 1.5 307 61750 123500 247000 24700 61000 1.5 333 87100 174200 348400 34800 79000 1.5 364 117000 234000 468000 46800 99000 1.5 The specified torsional stiffness "ZN" applies to coupling types ZNN, ZNNA, ZNNV and ZNN for axial displacement. Torsional stiffness of types ZNZS, ZNW, ZNBG and ZNZA on request. The axial misalignment ΔKa must be understood as the maximum permitted enlargement of the hub distance S of the coupling. The axial misalignment ΔKa does not apply to the types ZNNA, ZNNV, ZNBG and ZNZA. Angular misalignment ΔKw » Types ZNN, ZNZS, ZNW, ZNNV, ZNN for axial displacement: ΔKw = 0.5° Radial misalignment ΔKr » Types ZNN, ZNZS, ZNW, ZNNV, ZNN for axial displacement: ΔKr ≤ VA ⋅ tan 0.5° For the tooth distance VA, see the relevant table for the subassembly. » Types ZNBG, ZNNA, ZNZA: ΔKw = 0.2° » Types ZNBG, ZNNA, ZNZA: ΔKr ≤ VA ⋅ tan 0.2°
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