Roots Vacuum Pumps 2016 by Leybold

More catalogs by Leybold | Roots Vacuum Pumps 2016 | 40 pages | 2017-05-08

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Page 22 of Roots Vacuum Pumps 2016

technical data ws/wsu 251 ws/wsuh 501 50 hz 60 hz 50 hz 60 hz nominal pumping speed 1 m3 x h-1 cfm 253 149 304 179 505 297.4 606 357 210.0 123.7 d 65 b – 251.0 148.0 d 65 b – 410.0 241.0 – sv 200 530.0 312.0 – sv 200 8 x 10-4 6 x 10-4 4 x 10-2 3 x 10-2 4 x 10-2 3 x 10-2 80.0 60.0 80.0 60.0 80.0 60.0 80.0 60.0 1 x 10 1 x 10 1 x 10 1 x 10-4 200-208 265 460 200 230 400 200-208 265 460 max effective pumping speed with backing pump ultimate total pressure 2 m3 x h-1 cfm trivac sogevac mbar torr 8 x 10-4 6 x 10-4 max permissible pressure difference during continuous operation 3 mbar torr leak rate integral mbar xlxs -1 v 200 230 400 mains supply ∆ y f thermal class °c °f permissible ambient temperatures motor power -4 kw hp -4 f -4 f f +5 to +40 41 to +104 +5 to +40 41 to +104 +5 to +40 41 to +104 +5 to +40 41 to +104 1.1 1.5 1.4 1.9 2.2 3.0 2.4 3.3 nominal speed approx rpm 3000 3600 3000 3600 max permissible speed rpm 6000 6000 6000 6000 ip 20 20 20 20 type of protection lubricant for the bearing chamber 4 lvo 400 vertical pumping action approx horizontal pumping action approx other oils vertical pumping action approx horizontal pumping action approx l qt l qt 0.55 0.58 0.45 0.48 0.55 0.58 0.45 0.48 0.75 0.79 0.7 0.74 0.75 0.79 0.7 0.74 l qt l qt 0.6 0.63 0.45 0.48 0.6 0.63 0.45 0.48 0.8 0.85 0.7 0.74 0.8 0.85 0.7 0.74 connection flanges dn 63 iso-k 63 iso-k 63 iso-k 63 iso-k weight ws wsu kg lbs 90.0 95.0 198.5 209.5 90.0 95.0 198.5 209.5 130.0 135.0 286.7 297.7 130.0 135.0 286.7 297.7 58 60 52 56 noise level 5 dba to din 28 400 and subsequent numbers with double-stage rotary vane vacuum pump trivac or single-stage rotary vane vacuum pump sogevac type of backing pump look at max pumping speed when using 2-stage backing pumps the ultimate pressures will be correspondingly lower 3 applicable for ratio up to 1 10 between backing pump and roots vacuum pump at 3000 rpm 4 authoriative however is the oil level at the oil-level glass 5 valid under ultimate pressure conditions pressures over 10 mbar 7.5 torr produce a higher operating noise 1 2 22 leybold full line catalog fall 2016 leybold