© Siemens AG 2015 FLENDER Standard Couplings Fluid Couplings — FLUDEX Series General information Materials Blade wheel and housing Thermal equipment Cast aluminum AlSi10Mg or AlSi9Mg Shaft and hollow shaft Steel with a yield point higher than 400 N/mm 2 Static seals and radial shaft seals Perbunan NBR or Viton FPM Add-on parts Grey cast iron EN-GJL-250, spheroidal graphite cast iron EN-GJS-400 or steel Fusible safety plugs If a FLUDEX coupling is operated with an impermissibly high slip for a prolonged period, the oil filling and the coupling housing will overheat.
Fusible safety plugs which release the oil filling into the environment upon reaching a preset temperature are there- fore fitted in each coupling housing. These protect the coupling from irreparable damage through overheating or overpressure and disconnect the drive motor from the driven machine. 1) Not available for size 222. Suitability:
1 = Suitable for continuous coupling operation temperatures up to 85 °C 2 = Suitable for continuous coupling operation temperatures up to 110 °C Thermal switching equipment By adding thermal switching equipment leakage and loss of the hydraulic fluid as well as a risk to and contamination of the envi- ronment in the event that the coupling overheats can be avoided. The thermal switching equipment does not work if a machine side is blocked and the coupling housing is connected to this side. If the coupling is stationary, the switching pin cannot actu- ate the switching equipment.
Switchgear Thermal switch Striking area The thermal switching equipment comprises the thermal switch and the switchgear. The switchgear comprises a limit switch with a make-and-break contact and a swiveling cam. Limit switch and cam are mounted on a common base plate. The thermal switch is screwed into the housing in place of a screw plug. The fusible safety plug (with a higher response temperature) remains in the coupling for addi- tional safety. 5 G_MD10_EN_00108 R If the set temperature is exceeded, the switching pin is released from the fusible element, emerges 10 mm from the housing and actuates the switchgear while the coupling is rotating.
The switchgear can cut out the drive motor and/or trigger an optical or acoustic alarm signal. The housing of the coupling remains closed and no operating fluid will escape. Assignment 13 From coupling size 297, the thermal switching equipment can be used up to a peripheral speed of 50 m/s. At higher speeds, an EOC system should be provided.
13/3 Siemens MD 10.1 · 2015 Equipment Suit- ability Fusible safety plug Sealing material Additional order info "-Z" with order code 1 110 °C NBR FPM F01 F05 Standard 1 140 °C NBR – 1 140 °C FPM F07 2 160 °C FPM F08 ATEX 1 110 °C ex NBR FPM F02 F06 With ther- 1 140 °C + thermal NBR mal switch1) switch 110 °C FPM 2 160 °C + thermal FPM switch 140 °C F03 F10 F11 With 1 160 °C + EOC trans- NBR transmitter1) mitter (125 °C) 2 FPM F04 F12 Incl. switchgear F25 Incl. sensor and evaluation instrument F26 Continuous operat- ing temperature Thermal switch Fusible safety plug ≤85 °C 110 °C 140 °C > 85 ° ... 110 °C 140 °C 160 °C Size 297 342 370 395 425 450 490 516 565 5 90 655 755 887 Perm.
speed in rpm 2500 2240 2100 2000 1900 1800 1650 1600 1500 1450 1250 1100 1000 Radius of travel R in mm 188 215 226 239 251 271 292 307 330 346 383 435 507