FLENDER Standard Couplings - DS TECH

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FLENDER Standard Couplings Fluid Couplings — FLUDEX Series © Siemens AG 2011 General information FG and FV series – drive via the housing 101 153 12 2/3 2/3 12 115 173 FGD FVD FLUDEX FG and FV series couplings are designed for drive via the coupling housing. In the FV series (coupling with delay chamber), the motor drives the coupling housing, comprising a blade wheel (101) and a cover (102), via the flexible N-EUPEX coupling (part 2/3) and the delay chamber (115). The rotational flow of the coupling filling drives the blade wheel (105) and the hollow shaft (106) on the output side, which is mounted on the gear unit or driven machine shaft. In the FG series (basic coupling), there is no delay chamber, and the flexible coupling is directly flange-mounted on the blade wheel. When the coupling is started up, part of the oil filling is forced into the damming chamber. This enables the desired torque limitation (approx. twice T N ) to be achieved during starting. In the FV series the delay chamber also receives part of the oil filling in accordance with the fluid level when the coupling is stationary. During starting the effective oil filling in the working chamber is G_MD10_EN_00117 103 102 105 Damming chamber 106 Working chamber 163 2/3 12 101 102 103 105 106 115 153 163 173 Part 2/3 of the flexible coupling Flexible elements Blade wheel (outer wheel) Cover Fusible safety plug Blade wheel (inner wheel) Hollow shaft Delay chamber Filler plug Screw plug (oil drain) Oil drain plug - delay chamber reduced by the amount of fluid in the delay chamber, thus considerably reducing the starting torque (approx. 1.5 times T N ). From the delay chamber located on the drive side, the oil is fed back time-dependently to the working chamber via small holes and the coupling torque is raised, even if the output is blocked. This replenishing function enables a drive to be soft-started with a very low starting torque and with an almost load-free motor. At the same time, however, increased load torques can be overcome by the torque increase in the coupling. The property of the coupling with delay chamber can be used advantageously, for example, to soft-start empty, partly loaded and fully loaded conveyor belts. FG series couplings are used for normal starting torque limitation, as a starting clutch for isolating vibration and for overload limitation in the event of drive blockage. (450) 655-7447 info@pt-dstech.com www.dstech.ca 13 1275 Newton, local 15 Boucherville, Qc, Canada, J4B 5H2 13/8 Siemens MD 10.1 · 2011
© Siemens AG 2011 FLENDER Standard Couplings Fluid Couplings — FLUDEX Series General information FN series – drive via the housing Damming chamber 106 120 Large delay chamber 103 101 153 173 Working chamber 163 102 FND 105 FNDB 2/3 10 12 11 32 G_MD10_EN_00118 2/3 10 12 11 32 101 102 103 105 106 120 153 173 163 Part 2/3 of the flexible coupling Part 10 of the flexible coupling Flexible elements Part 11 Brake drum Blade wheel (outer wheel) Cover Fusible safety plug Blade wheel (inner wheel) Shaft Hub carrier (large delay chamber) Filler plug Oil locking screw - delay chamber Screw plug (oil drain) 1275 Newton, local 15 Boucherville, Qc, Canada, J4B 5H2 FLUDEX FN series couplings have a larger delay chamber than the FV series. The delay chamber is designed as a hub carrier (120) and is mounted on the motor shaft. The hub carrier is flange-fitted to the housing (101, 102) of the FLUDEX coupling. Output is via the blade wheel (105) and the shaft (106) to the flexible N-EUPEX coupling connecting to the gear unit or driven machine. With types FND, FNDB and FNDS the coupling can be dismounted radially without moving the coupled machines. Because of the larger delay chamber, FN couplings enable even softer starting than FV couplings. Torque limitation during starting is approx. 1.3 times T N . A further advantage of types FNDB and FNDS is the favorable weight distribution. Depending on the series selected, different starting characteristics arise during starting. T/ T N Torque 2.5 2.0 1.5 1.0 Motor torque/coupling torque TMot s = 100% - FA.. / FG.. s = 100% - FV. s = 100% - FN.. G_MD10_EN_00119a 2.5 2.0 1.5 1.0 The normally stronger motor shaft bears the weight of the hub carrier (cast version) and the main coupling. The gear unit shaft carries only the brake drum or disk and the output-side part of the flexible coupling. At the same time, the principle of the driveside delay chamber with the capacity for increasing torque timedependently is retained. FN couplings have the same fields of application as FV couplings. However, they offer special advantages in the brake disk design because of the weight distribution. Coupling torque over starting time T coupl FA.. / FG.. FV.. G_MD10_EN_00120a FN.. 0.5 0.5 0.0 0% FLUDEX series: Series FA../FG.. FV.. FN.. 50% Motor speed n1 / n0 100% Description Basic coupling without delay chamber Coupling with delay chamber Coupling with large delay chamber 0.0 Starting time 13 (450) 655-7447 info@pt-dstech.com www.dstech.ca Siemens MD 10.1 · 2011 13/9
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