Technology
Roots vacuum pumps
Also called vacuum boosters: dry and contact-free for high pumping speeds, usually together with a backing pump. 134 current models from 6 manufacturers – comparable by pumping speed and rated motor power.
Compare 134 modelsHow the technology works
- 134models
- 21series
- 6manufacturers
- 44,300 m³/hhighest pumping speed (50 Hz)
Touch the points: the parts explain themselves.
Manufacturers and series
6 manufacturers, 21 series
Each series leads to its page with all models. “Show only …” sets the filter of the product overview.
Atlas Copco
11 models · 253–4,140 m³/h
Becker
3 models · 500–2,000 m³/h
Busch
26 models · 250–12,000 m³/h
Edwards
24 models · 30–44,300 m³/h
Leybold
28 models · 25–4,700 m³/h
Pfeiffer Vacuum
42 models · 14–13,540 m³/h
Product overview
Compare all 134 models
The filters on the left narrow down the selection by the key figures of the models – for 50 or 60 Hz.
Atlas Copco DRB series 4 models
DRB 250Pumping speed 253 m³/h 50 Hz304 m³/h 60 HzUltimate pressure Rated motor power 1.1 kW 50 Hz1.1 kW 60 HzVariants 2
DRB 500Pumping speed 505 m³/h 50 Hz606 m³/h 60 HzUltimate pressure Rated motor power 2.2 kW 50 Hz2.2 kW 60 HzVariants 2DRB 1000Pumping speed 1,000 m³/h 50 Hz1,200 m³/h 60 HzUltimate pressure Rated motor power 4 kW 50 Hz4 kW 60 HzVariants 2DRB 2000Pumping speed 2,050 m³/h 50 Hz2,460 m³/h 60 HzUltimate pressure Rated motor power 7.5 kW 50 Hz7.5 kW 60 HzVariants 2Atlas Copco DRB VSD+ series 2 models
DRB 1500 VSD+Pumping speed 1,500 m³/h 50 Hz1,500 m³/h 60 HzUltimate pressure Rated motor power 4 kW 50 Hz4 kW 60 HzVariants 1DRB 3000 VSD+Pumping speed 3,000 m³/h 50 Hz3,000 m³/h 60 HzUltimate pressure Rated motor power 7.5 kW 50 Hz7.5 kW 60 HzVariants 1Atlas Copco ZRS series 5 models
ZRS 250Pumping speed 310 m³/h 50 Hz375 m³/h 60 HzUltimate pressure Rated motor power 2.2 kW 50 Hz2.2 kW 60 HzVariants 4ZRS 500Pumping speed 505 m³/h 50 Hz605 m³/h 60 HzUltimate pressure Rated motor power 2.2 kW 50 Hz2.2 kW 60 HzVariants 4ZRS 1200Pumping speed 1,195 m³/h 50 Hz1,435 m³/h 60 HzUltimate pressure Rated motor power 3 kW 50 Hz3 kW 60 HzVariants 4ZRS 2600Pumping speed 2,590 m³/h 50 Hz3,110 m³/h 60 HzUltimate pressure Rated motor power 11 kW 50 Hz11 kW 60 HzVariants 4ZRS 4200Pumping speed 4,140 m³/h 50 Hz4,985 m³/h 60 HzUltimate pressure Rated motor power 11 kW 50 Hz11 kW 60 HzVariants 4Becker RBP series 3 models
RBP 500Pumping speed 500 m³/h 50 Hz600 m³/h 60 HzUltimate pressure Rated motor power 2.2 – 3 kW 50 Hz2.2 – 3 kW 60 HzVariants 5RBP 1000Pumping speed 1,000 m³/h 50 Hz1,200 m³/h 60 HzUltimate pressure Rated motor power 4 – 5.5 kW 50 Hz4 – 5.5 kW 60 HzVariants 5RBP 2000Pumping speed 2,000 m³/h 50 Hz2,400 m³/h 60 HzUltimate pressure Rated motor power 5.5 – 7.5 kW 50 Hz5.5 – 7.5 kW 60 HzVariants 5Busch PANDA/PUMA series 26 models
PANDA WV 0250 CPumping speed 250 m³/h 50 Hz300 m³/h 60 HzUltimate pressure Rated motor power 1 kW 50 Hz1.2 kW 60 HzVariants PANDA WZ 0250 BPumping speed 263 m³/h 50 Hz315 m³/h 60 HzUltimate pressure Rated motor power 1.5 kW 50 Hz1.8 kW 60 HzVariants PANDA WV 0500 CPumping speed 500 m³/h 50 Hz600 m³/h 60 HzUltimate pressure Rated motor power 2.2 kW 50 Hz3 kW 60 HzVariants 4PUMA WY 0500 CPumping speed 500 m³/h 50 Hz600 m³/h 60 HzUltimate pressure Rated motor power 4 kW 50 Hz4.4 kW 60 HzVariants PUMA WP 0500 D2Pumping speed 520 m³/h 50 Hz620 m³/h 60 HzUltimate pressure Rated motor power 2.2 kW 50 Hz3 kW 60 HzVariants PANDA WZ 0500 BPumping speed 525 m³/h 50 Hz630 m³/h 60 HzUltimate pressure Rated motor power 4 kW 50 Hz4.4 kW 60 HzVariants PUMA WP 0700 DPumping speed 700 m³/h 50 Hz840 m³/h 60 HzUltimate pressure Rated motor power 3.5 kW 50 Hz4.8 kW 60 HzVariants PUMA WY 0700 CPumping speed 700 m³/h 50 Hz840 m³/h 60 HzUltimate pressure Rated motor power 4 kW 50 Hz4.4 kW 60 HzVariants PUMA WP 1000 D2Pumping speed 1,000 m³/h 50 Hz1,200 m³/h 60 HzUltimate pressure Rated motor power 3.5 kW 50 Hz4.8 kW 60 HzVariants PANDA WV 1200 APumping speed 1,050 m³/h 50 Hz1,260 m³/h 60 HzUltimate pressure Rated motor power 3.5 kW 50 Hz4.8 kW 60 HzVariants 5PANDA WZ 1200 APumping speed 1,050 m³/h 50 Hz1,260 m³/h 60 HzUltimate pressure Rated motor power 4 kW 50 Hz4.4 kW 60 HzVariants PUMA WY 1250 CPumping speed 1,250 m³/h 50 Hz1,500 m³/h 60 HzUltimate pressure Rated motor power 4 kW 50 Hz4.4 kW 60 HzVariants PUMA WP 1250 D2Pumping speed 1,295 m³/h 50 Hz1,555 m³/h 60 HzUltimate pressure Rated motor power 4.3 kW 50 Hz5.2 kW 60 HzVariants PANDA WV 1800 APumping speed 1,600 m³/h 50 Hz1,920 m³/h 60 HzUltimate pressure Rated motor power 4.3 kW 50 Hz5.2 kW 60 HzVariants 5PUMA WY 2000 CPumping speed 2,010 m³/h 50 Hz2,435 m³/h 60 HzUltimate pressure Rated motor power 5.5 kW 50 Hz6.6 kW 60 HzVariants PUMA WP 2000 D2Pumping speed 2,020 m³/h 50 Hz2,435 m³/h 60 HzUltimate pressure Rated motor power 5.5 kW 50 Hz7 kW 60 HzVariants PANDA WV 2400 APumping speed 2,120 m³/h 50 Hz2,540 m³/h 60 HzUltimate pressure Rated motor power 5.5 kW 50 Hz7 kW 60 HzVariants 5PANDA WZ 2400 APumping speed 2,120 m³/h 50 Hz2,540 m³/h 60 HzUltimate pressure Rated motor power 5.5 kW 50 Hz6.6 kW 60 HzVariants PANDA WV 2200 APumping speed 2,155 m³/h 50 Hz2,585 m³/h 60 HzUltimate pressure Rated motor power 5.5 kW 50 Hz6.3 kW 60 HzVariants PUMA WY 3600 APumping speed 3,600 m³/h 50 Hz3,600 m³/h 60 HzUltimate pressure Rated motor power 15 kW 50 Hz15 kW 60 HzVariants PANDA WV 4500 BPumping speed 4,500 m³/h 50 Hz5,400 m³/h 60 HzUltimate pressure Rated motor power 11 kW 50 Hz12.6 kW 60 HzVariants 4PUMA WP 4500 B2Pumping speed 4,500 m³/h 50 Hz5,400 m³/h 60 HzUltimate pressure Rated motor power 11 kW 50 Hz12.6 kW 60 HzVariants PUMA WP 5400 APumping speed 6,480 m³/h 50 Hz6,480 m³/h 60 HzUltimate pressure Rated motor power 11 kW 50 Hz11 kW 60 HzVariants PUMA WP 8100 APumping speed 8,100 m³/h 50 Hz8,100 m³/h 60 HzUltimate pressure Rated motor power 18.5 kW 50 Hz18.5 kW 60 HzVariants PUMA WY 8000 APumping speed 8,100 m³/h 50 Hz8,100 m³/h 60 HzUltimate pressure Rated motor power 11 kW 50 Hz11 kW 60 HzVariants PUMA WG 9600Pumping speed 12,000 m³/h 50 Hz12,000 m³/h 60 HzUltimate pressure 130 mbarRated motor power Variants Edwards EH series 5 models
Edwards EH250Pumping speed 310 m³/h 50 Hz375 m³/h 60 HzUltimate pressure Rated motor power 2.2 kW 50 Hz2.2 kW 60 HzVariants 8
Edwards EH500Pumping speed 505 m³/h 50 Hz605 m³/h 60 HzUltimate pressure Rated motor power 2.2 kW 50 Hz2.2 kW 60 HzVariants 8
Edwards EH1200Pumping speed 1,195 m³/h 50 Hz1,435 m³/h 60 HzUltimate pressure Rated motor power 3 kW 50 Hz3 kW 60 HzVariants 8
Edwards EH2600Pumping speed 2,590 m³/h 50 Hz3,110 m³/h 60 HzUltimate pressure Rated motor power 11 kW 50 Hz11 kW 60 HzVariants 8
Edwards EH4200Pumping speed 4,140 m³/h 50 Hz4,985 m³/h 60 HzUltimate pressure Rated motor power 11 kW 50 Hz11 kW 60 HzVariants 8Edwards GMB series 2 models
Edwards GMB25KPumping speed 25,500 m³/h 50 HzUltimate pressure Rated motor power Variants 8Edwards GMB40KPumping speed 44,300 m³/h 50 HzUltimate pressure Rated motor power Variants 8Edwards HV series 1 model
Edwards HV8000Pumping speed 7,200 m³/h 50 Hz8,640 m³/h 60 HzUltimate pressure Rated motor power 15 kW 50 Hz18.5 kW 60 HzVariants 6Edwards nXLi series 7 models
Edwards nXL110iDPumping speed 98 m³/h 50 Hz98 m³/h 60 HzUltimate pressure Rated motor power Variants 1Edwards nXL110iD EnhancedPumping speed 98 m³/h 50 Hz98 m³/h 60 HzUltimate pressure 0.07 mbarRated motor power Variants 2Edwards nXL110iPumping speed 110 m³/h 50 Hz110 m³/h 60 HzUltimate pressure 0.02 mbarRated motor power Variants 2Edwards nXL110i EnhancedPumping speed 110 m³/h 50 Hz110 m³/h 60 HzUltimate pressure 0.02 mbarRated motor power Variants 2Edwards nXL200iD EnhancedPumping speed 158 m³/h 50 Hz158 m³/h 60 HzUltimate pressure 0.07 mbarRated motor power Variants 2Edwards nXL200iPumping speed 200 m³/h 50 Hz200 m³/h 60 HzUltimate pressure 0.02 mbarRated motor power Variants 2Edwards nXL200i EnhancedPumping speed 200 m³/h 50 Hz200 m³/h 60 HzUltimate pressure 0.02 mbarRated motor power Variants 2Edwards nXRi series 5 models
Edwards nXR30iPumping speed 30 m³/h 50 Hz30 m³/h 60 HzUltimate pressure 0.03 mbarRated motor power Variants 1Edwards nXR40iPumping speed 40 m³/h 50 Hz40 m³/h 60 HzUltimate pressure 0.03 mbarRated motor power Variants 1Edwards nXR60iPumping speed 60 m³/h 50 Hz60 m³/h 60 HzUltimate pressure 0.03 mbarRated motor power Variants 1Edwards nXR90iPumping speed 90 m³/h 50 Hz90 m³/h 60 HzUltimate pressure 0.03 mbarRated motor power Variants 1Edwards nXR120iPumping speed 120 m³/h 50 Hz120 m³/h 60 HzUltimate pressure 0.03 mbarRated motor power Variants 1Edwards Stokes series 4 models
Edwards Stokes 607Pumping speed 1,733 m³/h 50 Hz2,080 m³/h 60 HzUltimate pressure Rated motor power Variants 4Edwards Stokes 615Pumping speed 3,685 m³/h 50 Hz4,420 m³/h 60 HzUltimate pressure Rated motor power Variants 4Edwards Stokes 615 BPPumping speed 3,685 m³/h 50 Hz4,420 m³/h 60 HzUltimate pressure Rated motor power Variants 10Edwards Stokes 622Pumping speed 5,525 m³/h 50 Hz6,630 m³/h 60 HzUltimate pressure Rated motor power Variants 7Leybold ECODRY series 5 models
ECODRY 25 plusPumping speed 25 m³/h 50 Hz25 m³/h 60 HzUltimate pressure 0.01 mbarRated motor power 0.85 kW 50 Hz0.85 kW 60 HzVariants 1
ECODRY 35 plusPumping speed 35 m³/h 50 Hz35 m³/h 60 HzUltimate pressure 0.01 mbarRated motor power 0.85 kW 50 Hz0.85 kW 60 HzVariants 1
ECODRY 40 plusPumping speed 40 m³/h 50 Hz40 m³/h 60 HzUltimate pressure 0.03 mbarRated motor power 1.2 kW 50 Hz1.2 kW 60 HzVariants 2ECODRY 65 He plusPumping speed 55 m³/h 50 Hz55 m³/h 60 HzUltimate pressure 0.03 mbarRated motor power 1.2 kW 50 Hz1.2 kW 60 HzVariants 2
ECODRY 65 plusPumping speed 55 m³/h 50 Hz55 m³/h 60 HzUltimate pressure 0.03 mbarRated motor power 1.2 kW 50 Hz1.2 kW 60 HzVariants 4Leybold RUVAC WA/WAU series 8 models
RUVAC WA 251Pumping speed 210 m³/h 50 Hz251 m³/h 60 HzUltimate pressure 8 × 10-4 mbarRated motor power 1.1 kW 50 Hz1.1 kW 60 HzVariants 3
RUVAC WAU 251Pumping speed 210 m³/h 50 Hz251 m³/h 60 HzUltimate pressure 8 × 10-4 mbarRated motor power 1.1 kW 50 Hz1.1 kW 60 HzVariants 5
RUVAC WA 501Pumping speed 410 m³/h 50 Hz530 m³/h 60 HzUltimate pressure 0.04 mbarRated motor power 2.2 kW 50 Hz2.2 kW 60 HzVariants 4
RUVAC WAU 501Pumping speed 410 m³/h 50 Hz530 m³/h 60 HzUltimate pressure 0.04 mbarRated motor power 2.2 kW 50 Hz2.2 kW 60 HzVariants 6
RUVAC WA 1001Pumping speed 800 m³/h 50 Hz1,000 m³/h 60 HzUltimate pressure 0.04 mbarRated motor power 4 kW 50 Hz4 kW 60 HzVariants 3
RUVAC WAU 1001Pumping speed 800 m³/h 50 Hz1,000 m³/h 60 HzUltimate pressure 0.04 mbarRated motor power 4 kW 50 Hz4 kW 60 HzVariants 6
RUVAC WA 2001Pumping speed 1,850 m³/h 50 Hz2,100 m³/h 60 HzUltimate pressure 0.04 mbarRated motor power 7.5 kW 50 Hz7.5 kW 60 HzVariants 3
RUVAC WAU 2001Pumping speed 1,850 m³/h 50 Hz2,100 m³/h 60 HzUltimate pressure 0.04 mbarRated motor power 7.5 kW 50 Hz7.5 kW 60 HzVariants 7Leybold RUVAC WH/WHU series 7 models
RUVAC WH 700Pumping speed 620 m³/h 50 Hz740 m³/h 60 HzUltimate pressure Rated motor power 2.2 – 3.8 kW 50 Hz2.6 – 3.8 kW 60 HzVariants 9
RUVAC WH 2500Pumping speed 2,200 m³/h 50 Hz2,500 m³/h 60 HzUltimate pressure Rated motor power 6.2 – 11 kW 50 Hz7.4 – 11 kW 60 HzVariants 24
RUVAC WHU 2500Pumping speed 2,200 m³/h 50 Hz2,500 m³/h 60 HzUltimate pressure Rated motor power 6.2 kW 50 Hz7.4 kW 60 HzVariants 10
RUVAC WH 4400Pumping speed 3,300 m³/h 50 Hz3,900 m³/h 60 HzUltimate pressure Rated motor power 11 – 18.5 kW 50 Hz11 – 18.5 kW 60 HzVariants 14
RUVAC WHU 4400Pumping speed 3,300 m³/h 50 Hz3,900 m³/h 60 HzUltimate pressure Rated motor power 18.5 kW 50 Hz18.5 kW 60 HzVariants 7
RUVAC WH 7000Pumping speed 4,700 m³/h 50 Hz5,300 m³/h 60 HzUltimate pressure Rated motor power 11 – 18.5 kW 50 Hz11 – 18.5 kW 60 HzVariants 19
RUVAC WHU 7000Pumping speed 4,700 m³/h 50 Hz5,300 m³/h 60 HzUltimate pressure Rated motor power 18.5 kW 50 Hz18.5 kW 60 HzVariants 3Leybold RUVAC WS/WSU series 8 models
RUVAC WS 251Pumping speed 210 m³/h 50 Hz251 m³/h 60 HzUltimate pressure 8 × 10-4 mbarRated motor power 1.1 kW 50 Hz1.4 kW 60 HzVariants 2
RUVAC WSU 251Pumping speed 210 m³/h 50 Hz251 m³/h 60 HzUltimate pressure 8 × 10-4 mbarRated motor power 1.1 kW 50 Hz1.4 kW 60 HzVariants 4
RUVAC WS 501Pumping speed 410 m³/h 50 Hz530 m³/h 60 HzUltimate pressure 0.04 mbarRated motor power 2.2 kW 50 Hz2.4 kW 60 HzVariants 2
RUVAC WSU 501Pumping speed 410 m³/h 50 Hz530 m³/h 60 HzUltimate pressure 0.04 mbarRated motor power 2.2 kW 50 Hz2.4 kW 60 HzVariants 5
RUVAC WS 1001Pumping speed 800 m³/h 50 Hz1,000 m³/h 60 HzUltimate pressure 0.04 mbarRated motor power 4 kW 50 Hz4.4 kW 60 HzVariants 3
RUVAC WSU 1001Pumping speed 800 m³/h 50 Hz1,000 m³/h 60 HzUltimate pressure 0.04 mbarRated motor power 4 kW 50 Hz4.4 kW 60 HzVariants 6
RUVAC WS 2001Pumping speed 1,850 m³/h 50 Hz2,100 m³/h 60 HzUltimate pressure 0.04 mbarRated motor power 7.5 kW 50 Hz8.5 kW 60 HzVariants 11
RUVAC WSU 2001Pumping speed 1,850 m³/h 50 Hz2,100 m³/h 60 HzUltimate pressure 0.04 mbarRated motor power 7.5 kW 50 Hz8.5 kW 60 HzVariants 15Pfeiffer Vacuum A4 series 12 models
A 124 HPumping speed 95 m³/h 50 Hz110 m³/h 60 HzUltimate pressure 0.05 mbarRated motor power Variants A 204 H/XPumping speed 130 m³/h 50 Hz160 m³/h 60 HzUltimate pressure 0.2 mbarRated motor power Variants A 604 HPumping speed 480 m³/h 50 Hz560 m³/h 60 HzUltimate pressure 3 × 10-3 mbarRated motor power Variants A 804 H/XPumping speed 600 m³/h 50 Hz700 m³/h 60 HzUltimate pressure 8 × 10-3 mbarRated motor power Variants A 1204 HPumping speed 1,050 m³/h 50 Hz1,150 m³/h 60 HzUltimate pressure 3 × 10-3 mbarRated motor power Variants A 1504 H/XPumping speed 1,100 m³/h 50 Hz1,200 m³/h 60 HzUltimate pressure 8 × 10-3 mbarRated motor power Variants A 1804 H/XPumping speed 1,650 m³/h 50 Hz1,700 m³/h 60 HzUltimate pressure 8 × 10-3 mbarRated motor power Variants A 1504 XNPumping speed 1,100 m³/h 60 HzUltimate pressure 0.0145 mbarRated motor power Variants A 1804 XNPumping speed 1,600 m³/h 60 HzUltimate pressure 0.0145 mbarRated motor power Variants A 3004 H/XPumping speed 3,000 m³/h 60 HzUltimate pressure 4 × 10-3 mbarRated motor power Variants A 3004 XNPumping speed 2,900 m³/h 60 HzUltimate pressure 4 × 10-3 mbarRated motor power Variants A 804 XNPumping speed 600 m³/h 60 HzUltimate pressure 0.0145 mbarRated motor power Variants Pfeiffer Vacuum A 100/200 L series 3 models
A 100 LPumping speed 100 m³/h 50 HzUltimate pressure 0.012 mbarRated motor power Variants 8A 100 L ESPumping speed 100 m³/h 50 HzUltimate pressure 3 × 10-3 mbarRated motor power Variants 3A 200 LPumping speed 200 m³/h 50 HzUltimate pressure 0.013 mbarRated motor power Variants 5Pfeiffer Vacuum ACP series 4 models
ACP 15Pumping speed 14 m³/h 50 HzUltimate pressure 0.05 mbarRated motor power Variants 9ACP 28Pumping speed 27 m³/h 50 HzUltimate pressure 0.04 mbarRated motor power Variants 14ACP 40Pumping speed 37 m³/h 50 HzUltimate pressure 0.04 mbarRated motor power Variants 15ACP 90Pumping speed 88 m³/h 50 HzUltimate pressure 0.03 mbarRated motor power Variants 6Pfeiffer Vacuum HiLobe series 17 models
HiLobe 1002Pumping speed 1,050 m³/h 50 HzUltimate pressure Rated motor power 2 kW 50 HzVariants 1HiLobe 1004Pumping speed 1,050 m³/h 50 HzUltimate pressure Rated motor power 2 kW 50 HzVariants 2HiLobe 1302Pumping speed 1,300 m³/h 50 HzUltimate pressure Rated motor power 2.5 kW 50 HzVariants 2HiLobe 1304Pumping speed 1,300 m³/h 50 HzUltimate pressure Rated motor power 2.5 kW 50 HzVariants 2HiLobe 2104Pumping speed 2,100 m³/h 50 HzUltimate pressure Rated motor power 3.5 kW 50 HzVariants 2HiLobe 2703Pumping speed 2,700 m³/h 50 HzUltimate pressure Rated motor power 3.5 kW 50 HzVariants 1HiLobe 2704Pumping speed 2,700 m³/h 50 HzUltimate pressure Rated motor power 3.5 kW 50 HzVariants 2HiLobe 4504Pumping speed 4,440 m³/h 50 HzUltimate pressure Rated motor power 5.5 kW 50 HzVariants 2HiLobe 4503Pumping speed 4,500 m³/h 50 HzUltimate pressure Rated motor power 5.5 kW 50 HzVariants 1HiLobe 6203Pumping speed 6,200 m³/h 50 HzUltimate pressure Rated motor power 7.5 kW 50 HzVariants 1HiLobe 6204Pumping speed 6,220 m³/h 50 HzUltimate pressure Rated motor power 7.5 kW 50 HzVariants 2HiLobe 8103Pumping speed 8,120 m³/h 50 HzUltimate pressure Rated motor power 9 kW 50 HzVariants 1HiLobe 8104Pumping speed 8,120 m³/h 50 HzUltimate pressure Rated motor power 9 kW 50 HzVariants 1HiLobe 11003Pumping speed 10,830 m³/h 50 HzUltimate pressure Rated motor power 12 kW 50 HzVariants 1HiLobe 11004Pumping speed 10,830 m³/h 50 HzUltimate pressure Rated motor power 12 kW 50 HzVariants 1HiLobe 14003Pumping speed 13,540 m³/h 50 HzUltimate pressure Rated motor power 15 kW 50 HzVariants 1HiLobe 14004Pumping speed 13,540 m³/h 50 HzUltimate pressure Rated motor power 15 kW 50 HzVariants 1Pfeiffer Vacuum TORRI series 4 models
TORRI BD 0100 APumping speed 100 m³/h 50 Hz100 m³/h 60 HzUltimate pressure 0.01 mbarRated motor power 2.2 kW 50 Hz2.2 kW 60 HzVariants 1TORRI BD 0300 APumping speed 300 m³/h 50 Hz300 m³/h 60 HzUltimate pressure 1 × 10-3 mbarRated motor power 4.4 kW 50 Hz4.4 kW 60 HzVariants 1TORRI BD 0600 APumping speed 600 m³/h 50 Hz600 m³/h 60 HzUltimate pressure 1 × 10-3 mbarRated motor power 4.4 kW 50 Hz4.4 kW 60 HzVariants 1TORRI BD 1200 APumping speed 1,200 m³/h 50 Hz1,200 m³/h 60 HzUltimate pressure 1 × 10-3 mbarRated motor power 7.5 kW 50 Hz7.5 kW 60 HzVariants Pfeiffer Vacuum UltiDry series 2 models
UltiDry P1820Pumping speed 1,800 m³/h 50 HzUltimate pressure 1.1 × 10-3 mbarRated motor power Variants UltiDry P3020Pumping speed 3,000 m³/h 50 HzUltimate pressure 5.3 × 10-4 mbarRated motor power Variants No model matches these filters.
Atlas Copco DRB series 4 models
Atlas Copco DRB VSD+ series 2 models
Atlas Copco ZRS series 5 models
Becker RBP series 3 models
Busch PANDA/PUMA series 26 models
Edwards EH series 5 models
Edwards GMB series 2 models
Edwards HV series 1 model
Edwards nXLi series 7 models
Edwards nXRi series 5 models
Edwards Stokes series 4 models
Leybold ECODRY series 5 models
Leybold RUVAC WA/WAU series 8 models
Leybold RUVAC WH/WHU series 7 models
Leybold RUVAC WS/WSU series 8 models
Pfeiffer Vacuum A4 series 12 models
Pfeiffer Vacuum A 100/200 L series 3 models
Pfeiffer Vacuum ACP series 4 models
Pfeiffer Vacuum HiLobe series 17 models
Pfeiffer Vacuum TORRI series 4 models
Pfeiffer Vacuum UltiDry series 2 models
Models that a manufacturer no longer carries in its current range are not part of this overview; they are listed in its “Outdated models” section – for example under outdated Leybold models.
Operating principle
How a Roots vacuum pump works
Two Roots rotors turn in opposite directions in the housing without touching each other or the housing; a gearbox synchronises them. Between rotor and housing wall the gas is carried from the inlet to the outlet without the volume of the cell changing. Compression only takes place at the outlet – against the higher pressure that prevails there.
The drawing shows the basic principle. The designs of the individual manufacturers differ in detail.
- SuctionThrough the inlet (A) the gas flows into the cell (D) that a Roots rotor (C) forms with the housing (B).
- TransportThe following rotor lobe cuts the cell off from the inlet. The gas is carried to the outlet without compression.
- DischargeAt the outlet (F), gas flows from the discharge side into the cell and compresses its contents; the rotors then push the gas out.
Key figures
The technology in figures
The ranges result from the current models in our range.
Pumping speed (50 Hz)
14 to 44,300 m³/hin our range
Rated motor power (50 Hz)
0.85 to 18.5 kWin our range
Ultimate pressure: a question of the combination
Roots vacuum pumps usually work together with a backing pump. The ultimate pressure that can be reached then depends on the combination; many manufacturers therefore do not state it for the individual pump. Where a manufacturer does state an ultimate pressure – for example for multi-stage Roots pumps that compress against atmosphere – it is given in the product overview.
What characterises the technology
With a backing pump
Together with backing pumps, Roots vacuum pumps cover a wide range in which high pumping speeds are required.
Dry and contact-free
In the working chamber there is neither oil nor water as a sealing medium. In most models only the timing gear and the bearings are lubricated with oil.
Bypass valve
Some models have an automatic bypass valve that limits the pressure difference between inlet and outlet.
Multi-stage designs
Multi-stage Roots pumps compress against atmosphere in several successive stages and work without a backing pump.
Advantages
What speaks for this technology
- High pumping speeds
- Dry-running
- Robust and economical
- Reliable and heavy-duty
- Modular design
- Available as individual units
- Comprehensive range of accessories
- Frequency control possible
Applications
Where they work
- General industryextraction systems, drying, process engineering applications, vacuum conveying
- Environmental technologyextraction systems, drying systems, gas circulation
- Pumping stationsin combination with a backing pump, for example a rotary vane or screw pump
Frequently asked questions
Questions about Roots vacuum pumps
How does a Roots vacuum pump work?
Two Roots rotors turn in opposite directions and without contact in the housing. They carry the gas in the cells between rotor and housing wall from the inlet to the outlet; compression only takes place there, against the higher pressure of the discharge side. The drawing in the section Operating principle shows every step.
Does a Roots vacuum pump need a backing pump?
As a rule, yes: the classic Roots pump is designed for operation with a backing pump, for example a rotary vane pump or a screw pump. Multi-stage Roots pumps, by contrast, compress against atmosphere themselves.
Roots pump or vacuum booster – what is the difference?
There is none: both terms describe the same design.
From which manufacturers does Ehrler & Beck carry this technology?
Currently from Atlas Copco, Becker, Busch, Edwards, Leybold and Pfeiffer Vacuum. The series are listed in the section Manufacturers and series.
How do I find the right model?
In the product overview, the filters narrow down the selection by the key figures of the models. For sizing, it is best to tell us the gas to be conveyed, the working pressure and the flow rate you need – we will be glad to advise you.
What do the figures for 50 Hz and 60 Hz mean?
Flow rate and rated motor power depend on the mains frequency. The overview therefore shows both values wherever the manufacturer states them, and the size filters can be switched between 50 Hz and 60 Hz.
Does Ehrler & Beck also supply spare parts and service?
Yes. Ehrler & Beck offers original spare parts and accessories as well as maintenance and repair.
Which model fits your process?
Tell us the gas to be conveyed, the working pressure and the flow rate you need – we will advise you on selection, spare parts and service.
