FLENDER Standard Couplings Torsionally Rigid All-Steel Couplings — ARPEX ARP-6 Series © Siemens AG 2015 General information ■ Design NAN: The design of an ARPEX NAN coupling of the ARP-6 series is shown in the following illustration. The plate packs are bolted alternately between the flanges of the coupling hubs and the in- termediate spacer. Up to size 298-6 close-fitting bolts and from size 325-6 conical screw connections are used for fastening. The intermediate spacer is available from stock in various fixed lengths. Hubs are designed with threaded pull-off holes. MCECM: The design of an ARPEX MCECM coupling of the ARP-6 series is shown in the following illustration.
Bolted be- tween two hubs is the CEC transmission unit, the preassembled plate packs of which are bolted alternately between flanges and intermediate spacer. Up to size 275-6 close-fitting bolts and from size 310-6 conical screw connections are used for fastening. The intermediate spacer is available from stock in various fixed lengths. Jumbo hubs for large bore diameters can be optionally used.
Type MCECM Type NAN Plate pack Intermediate flange 6 Intermediate spacer Intermediate spacer Collar nut Collar nut Guard ring Guard ring Plate pack Hub Close-fitting bolt Close-fitting bolt Hub G_MD10_EN_00159a Design of the ARPEX coupling, ARP-6 series Variants of the ARPEX coupling, ARP-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 re- quest.
■ Technical data Power ratings, type NAN 6/38 Siemens MD 10.1 · 2015 Types NAN Variant with intermediate spacer, various fixed lengths available from stock MCECM Variant with preassembled intermediate unit and spacer machined on all sides, various fixed lengths available from stock Size Rated torque Maxi- mum torque Over- load torque Fatigue torque Maxi- mum speed Maximum permitted shaft misalignment Torsional stiffness ±ΔKa ±ΔKw ±ΔKr CT TKN TKmax TKOL TKW nKmax S = 100 mm S = 140 mm S = 180 mm S = 200 mm S = 250 mm S = 100 mm S = 140 mm S = 180 mm S = 200 mm S = 250 mm Nm Nm Nm Nm rpm mm mm mm mm mm mm MNm/ rad MNm/ rad MNm/ rad MNm/ rad MNm/ rad 88-6 190 270 450 70 21700 1.10 0.7° 1.15 1.64 – – – 0.04 0.04 – – – 270 410 680 110 16600 1.81 1.15 1.64 2.13 – – 0.09 0.09 0.08 – – 580 870 1450 230 12700 2.02 1.14 1.62 2.11 – – 0.21 0.19 0.17 – – 660 100 1650 270 11400 2.41 1.14 1.62 2.11 2.36 2.97 0.27 0.25 0.24 0.23 0.21 1220 1900 3100 490 9750 2.75 1.11 1.6 2.09 2.33 2.94 0.44 0.40 0.38 0.36 0.34 1875 2900 4700 750 9300 2.85 1.09 1.58 2.06 2.31 2.92 0.56 0.52 0.49 0.47 0.44 2850 4230 7200 1200 8100 3.06 1.10 1.59 2.08 2.32 2.93 0.81 0.75 0.70 0.67 0.62 4200 6300 10500 1700 7650 3.14 – 1.59 2.08 2.32 2.93 – 0.85 0.81 0.79 0.74 5750 8700 15000 2300 6700 3.69 – 1.56 2.05 2.3 2.91 – 1.37 1.31 1.29 1.22 8050 12000 20000 3200 6300 3.85 – 1.51 2 2.25 2.86 – 1.44 1.39 1.36 1.3 10000 15000 25000 4000 5150 4.19 – 1.47 1.95 2.2 2.81 – 1.47 1.43 1.41 1.37 12000 18000 30000 4800 4700 4.45 – – 1.93 2.17 2.79 – – 2.48 2.44 2.34 115-6 135-6 150-6 176-6 185-6 212-6 225-6 256-6 272-6 298-6 325-6