FLENDER Standard Couplings Torsionally Rigid All-Steel Couplings — ARPEX ARW-4/-6 Series © Siemens AG 2015 General information Variants of the ARPEX coupling, ARW-4/-6 series Further application-specific coupling types are available in selection module X.CAT NG at www.siemens.com/couplings . Dimension sheets and further information are available on request. The coupling parts of the ARPEX ARW-4/-6 series with the exception of H spacers are machined on all sides. These are delivered with unmachined, primed spacer tube. ■ Technical data Power ratings, type NHN 6 The radial misalignment Δ K r applies to a type NHN coupling with a shaft distance S = 1000 mm.
The radial misalignment Δ K r for other shaft distances S is calculated as follows: Δ K r = (S – S1) ⋅ tan( Δ K w ) The torsional stiffness values apply to the entire coupling with shaft distance S = 1000 mm. The torsional stiffness of the plate packs applies to the rated coupling torque T KN . To determine the torsional stiffness for a specific operating point, e.g. for calculat- ing torsional vibration, the manufacturer must be consulted. The permitted shaft misalignments Δ K a , Δ K r and Δ K w are maximum values and must not occur at the same time (see following table). T Kmax permitted only five times per hour.
Permitted shaft misalignments Because of design specifications, the maximum possible axial shaft misalignment with plate packs pulled apart ( tension + ) is greater than with plate packs pressed together ( compression – ).
6/47 Siemens MD 10.1 · 2015 Types NHN Variant with unmachined intermediate spacer, with variable spacer length Size Rated torque Maximum torque Overload torque Fatigue torque Maximum speed Maximum permitted shaft misalignment Torsional stiffness TKN TKmax TKOL TKW nKmax +ΔKa –ΔKa ±ΔKw ±ΔKr CTdyn Tension Compression for S = 1000 mm for S = 1000 mm Nm Nm Nm Nm rpm mm mm mm MNm/rad 101-4 92 140 230 37 10400 2.4 2.0 3.0° 51.8 0.006 225 340 560 90 7850 3.3 2.2 51.7 0.012 450 680 1130 180 6250 4.2 2.2 51.6 0.028 800 1200 2000 320 5350 5.1 2.2 51.6 0.068 1250 1880 3200 500 4550 5.7 2.2 51.6 0.108 2000 3000 5000 800 4000 6.6 2.2 51.5 0.174 2700 4100 6800 1080 3550 7.5 2.8 51.4 0.275 3850 5800 9700 1540 3200 8.4 2.8 51.4 0.451 5250 7900 13200 2100 2950 9.0 2.8 51.4 0.622 6650 10000 16700 2660 2700 10.0 2.8 51.4 0.657 9850 15000 25000 3940 2350 11.1 3.0 51.3 1.08 13300 20000 34000 5320 2100 12.4 4.8 50.8 1.32 19000 29000 48000 7600 1900 13.4 4.8 50.7 2.03 25150 38000 63000 10060 1750 14.6 4.8 50.6 2.73 32500 49000 82000 13000 1600 16.0 4.8 50.6 3.93 41000 62000 103000 16400 1500 17.0 4.8 50.7 10.1 52000 78000 130000 20800 1350 18.0 4.8 50.6 14.0 65000 98000 163000 26000 1250 20.0 4.8 50.5 16.9 80000 120000 200000 32000 1150 22.0 4.8 50.5 21.2 133-4 167-4 196-4 230-4 260-4 292-4 324-4 355-4 389-4 439-4 499-4 547-4 600-4 647-4 695-6 756-6 817-6 880-6 Size Permitted angular misalignment ΔKw (tension +) Permitted angular misalignment ΔKw (compression –) 3.0° 1.5° 0.0° 3.0° 1.5° 0.0° Permitted axial misalignment ΔKa in mm Permitted axial misalignment ΔKa in mm 101-4 0.8 1.6 2.4 0.8 1.6 2 133-4 1.1 2.2 3.3 1.1 2.2 2.2 167-4 1.4 2.8 4.2 1.4 2.2 2.2 196-4 1.7 3.4 5.1 1.7 2.2 2.2 230-4 1.9 3.8 5.7 1.9 2.2 2.2 260-4 2.2 4.4 6.6 2.2 2.2 2.2 292-4 2.5 5.0 7.5 2.5 2.8 2.8 324-4 2.8 5.6 8.4 2.8 2.8 2.8 355-4 3.0 6.0 9.0 2.8 2.8 2.8 389-4 3.3 6.7 10.0 2.8 2.8 2.8 439-4 3.7 7.4 11.1 3.0 3.0 3.0 499-4 4.1 8.3 12.4 4.1 4.8 4.8 547-4 4.5 8.9 13.4 4.4 4.8 4.8 600-4 4.9 9.7 14.6 4.8 4.8 4.8 647-4 5.3 10.7 16.0 4.8 4.8 4.8 695-6 5.6 11.4 17.0 4.8 4.8 4.8 756-6 6 12.1 18.0 4.8 4.8 4.8 817-6 6.7 13.4 20.0 4.8 4.8 4.8 880-6 7.3 14.8 22.0 4.8 4.8 4.8