Technology
Claw vacuum pumps
Two claw-shaped rotors compress dry and without contact ā with no oil or other operating liquids in the compression chamber. 78 current models from 6 manufacturers ā comparable by pumping speed, ultimate pressure and rated motor power.
Compare 78 modelsHow the technology works
- 78models
- 13series
- 6manufacturers
- 6 Ć 10ā»Ā³ mbarlowest ultimate pressure
Touch the points: the parts explain themselves.
Manufacturers and series
6 manufacturers, 13 series
Each series leads to its page with all models. āShow only ā¦ā sets the filter of the product overview.
Atlas Copco
13 models Ā· 65ā1,560 mĀ³/h
Becker
10 models Ā· 100ā500 mĀ³/h
Busch
32 models Ā· 18ā1,150 mĀ³/h
Edwards
7 models Ā· 65ā950 mĀ³/h
Elmo Rietschle
11 models Ā· 100ā950 mĀ³/h
Leybold
5 models Ā· 65ā950 mĀ³/h
Product overview
Compare all 78 models
The filters on the left narrow down the selection by the key figures of the models ā for 50 or 60 Hz.
Atlas Copco DZM VSD+ series 2 models
DZM 1200 VSD+Pumping speed 1,170 mĀ³/h 50 Hz1,170 mĀ³/h 60 HzUltimate pressure 150 mbarRated motor power 33 kW 50 Hz33 kW 60 HzVariants 1DZM 1600 VSD+Pumping speed 1,560 mĀ³/h 50 Hz1,560 mĀ³/h 60 HzUltimate pressure 150 mbarRated motor power 44 kW 50 Hz44 kW 60 HzVariants 1Atlas Copco DZQ series 1 model
DZQ 80Pumping speed 80 mĀ³/h 50 Hz94 mĀ³/h 60 HzUltimate pressure 0.03 mbarRated motor power 4 kW 50 Hz4 kW 60 HzVariants 1Atlas Copco DZS series 5 models
DZS 065APumping speed 65 mĀ³/h 50 Hz78 mĀ³/h 60 HzUltimate pressure 50 mbarRated motor power 1.8 kW 50 Hz2.2 kW 60 HzVariants 12DZS 150APumping speed 150 mĀ³/h 50 Hz180 mĀ³/h 60 HzUltimate pressure 50 mbarRated motor power 3.7 kW 50 Hz3.7 kW 60 HzVariants 12DZS 300APumping speed 300 mĀ³/h 50 Hz360 mĀ³/h 60 HzUltimate pressure 140 ā 200 mbarRated motor power 6.2 kW 50 Hz7.5 kW 60 HzVariants 12DZS 500 VPumping speed 500 mĀ³/h 50 Hz600 mĀ³/h 60 HzUltimate pressure 200 mbarRated motor power 9.2 kW 50 Hz11 kW 60 HzVariants 8DZS 1000 VPumping speed 950 mĀ³/h 50 Hz1,140 mĀ³/h 60 HzUltimate pressure 200 mbarRated motor power 18.5 kW 50 Hz22 kW 60 HzVariants 8Atlas Copco DZS VSD+ series 5 models
DZS 100 VSD+Pumping speed 105 mĀ³/h 50 Hz105 mĀ³/h 60 HzUltimate pressure 50 mbarRated motor power 3 kW 50 Hz3 kW 60 HzVariants 3DZS 200 VSD+Pumping speed 189 mĀ³/h 50 Hz189 mĀ³/h 60 HzUltimate pressure 50 mbarRated motor power 5.5 kW 50 Hz5.5 kW 60 HzVariants 3DZS 400 VSD+Pumping speed 398 mĀ³/h 50 Hz398 mĀ³/h 60 HzUltimate pressure 140 mbarRated motor power 11 kW 50 Hz11 kW 60 HzVariants 3DZS 600 VSD+Pumping speed 600 mĀ³/h 50 Hz600 mĀ³/h 60 HzUltimate pressure 200 mbarRated motor power 11 kW 50 Hz11 kW 60 HzVariants 2DZS 1200 VSD+Pumping speed 1,140 mĀ³/h 50 Hz1,140 mĀ³/h 60 HzUltimate pressure 200 mbarRated motor power 22 kW 50 Hz22 kW 60 HzVariants 2Becker BCV series 7 models
BCV 100Pumping speed 100 mĀ³/h 50 Hz120 mĀ³/h 60 HzUltimate pressure 50 mbarRated motor power 2.2 ā 3 kW 50 Hz2.2 ā 3 kW 60 HzVariants 4BCV 150Pumping speed 150 mĀ³/h 50 Hz180 mĀ³/h 60 HzUltimate pressure 100 mbarRated motor power 3 ā 4 kW 50 Hz3 ā 4 kW 60 HzVariants 4BCV 300Pumping speed 275 mĀ³/h 50 Hz325 mĀ³/h 60 HzUltimate pressure 150 mbarRated motor power 5.5 ā 7.5 kW 50 Hz5.5 ā 7.5 kW 60 HzVariants 4BCV 400Pumping speed 400 mĀ³/h 50 Hz470 mĀ³/h 60 HzUltimate pressure 200 mbarRated motor power 9.2 kW 50 Hz11.8 kW 60 HzVariants 5BCV 400 FDPumping speed 400 mĀ³/h 50 Hz470 mĀ³/h 60 HzUltimate pressure 200 mbarRated motor power 7.5 kW 50 Hz9.2 kW 60 HzVariants 4BCV 500Pumping speed 500 mĀ³/h 50 Hz600 mĀ³/h 60 HzUltimate pressure 200 mbarRated motor power 9.2 kW 50 Hz11.8 kW 60 HzVariants 5BCV 500 FDPumping speed 500 mĀ³/h 50 Hz600 mĀ³/h 60 HzUltimate pressure 200 mbarRated motor power 9.2 kW 50 Hz11.8 kW 60 HzVariants 5Becker VARIAIR BCV series 3 models
VARIAIR BCV 100Pumping speed 120 mĀ³/h 50 Hz120 mĀ³/h 60 HzUltimate pressure 50 mbarRated motor power Variants VARIAIR BCV 150Pumping speed 180 mĀ³/h 50 Hz180 mĀ³/h 60 HzUltimate pressure 100 mbarRated motor power Variants VARIAIR BCV 300Pumping speed 325 mĀ³/h 50 Hz325 mĀ³/h 60 HzUltimate pressure 150 mbarRated motor power Variants Busch MINK series 32 models
MINK MB 0018 APumping speed 18 mĀ³/h 50 Hz18 mĀ³/h 60 HzUltimate pressure 600 mbarRated motor power 0.5 kW 50 Hz0.5 kW 60 HzVariants 2
MINK MV 0040 E ECOTORQUEPumping speed 40 mĀ³/h 50 Hz40 mĀ³/h 60 HzUltimate pressure 40 mbarRated motor power Variants 
MINK MI 2124 BVPumping speed 50 mĀ³/h 50 Hz60 mĀ³/h 60 HzUltimate pressure 20 mbarRated motor power 2 kW 50 Hz2.4 kW 60 HzVariants 
MINK MV 0060 E ECOTORQUEPumping speed 60 mĀ³/h 50 Hz60 mĀ³/h 60 HzUltimate pressure 40 mbarRated motor power Variants 
MINK MM 0084 APumping speed 62 mĀ³/h 50 Hz75 mĀ³/h 60 HzUltimate pressure 60 mbarRated motor power 1.5 kW 50 Hz1.7 kW 60 HzVariants MINK MM 1104 BVPumping speed 62 mĀ³/h 50 Hz75 mĀ³/h 60 HzUltimate pressure 60 mbarRated motor power 1.5 kW 50 Hz1.7 kW 60 HzVariants 10
MINK MM 1104 CVMPumping speed 62 mĀ³/h 50 HzUltimate pressure 400 mbarRated motor power 1.3 kW 50 HzVariants 
MINK MM 0104 APumping speed 80 mĀ³/h 50 Hz95 mĀ³/h 60 HzUltimate pressure 60 mbarRated motor power 2.2 kW 50 Hz2.4 kW 60 HzVariants 
MINK MM 1144 BVPumping speed 80 mĀ³/h 50 Hz95 mĀ³/h 60 HzUltimate pressure 60 mbarRated motor power 2.2 kW 50 Hz2.4 kW 60 HzVariants 9
MINK MV 0080 E ECOTORQUEPumping speed 80 mĀ³/h 50 Hz80 mĀ³/h 60 HzUltimate pressure 40 mbarRated motor power Variants 
MINK MM 0142 APumping speed 110 mĀ³/h 50 Hz135 mĀ³/h 60 HzUltimate pressure 40 mbarRated motor power 3 kW 50 Hz3.4 kW 60 HzVariants 
MINK MM 1102 BVPumping speed 110 mĀ³/h 50 Hz135 mĀ³/h 60 HzUltimate pressure 60 mbarRated motor power 3 kW 50 Hz3.4 kW 60 HzVariants 6
MINK MM 1102 CVMPumping speed 110 mĀ³/h 50 HzUltimate pressure 400 mbarRated motor power 2.2 kW 50 HzVariants 
MINK MI 2122 BVPumping speed 120 mĀ³/h 50 Hz145 mĀ³/h 60 HzUltimate pressure 20 mbarRated motor power 5.1 kW 50 Hz6.8 kW 60 HzVariants 
MINK MM 0182 APumping speed 140 mĀ³/h 50 Hz175 mĀ³/h 60 HzUltimate pressure 40 mbarRated motor power 3.5 kW 50 Hz4.8 kW 60 HzVariants 
MINK MM 1142 BVPumping speed 140 mĀ³/h 50 Hz175 mĀ³/h 60 HzUltimate pressure 60 mbarRated motor power 3.5 kW 50 Hz4.8 kW 60 HzVariants 13
MINK MM 1324 AVPumping speed 160 mĀ³/h 50 Hz190 mĀ³/h 60 HzUltimate pressure 60 mbarRated motor power 4 kW 50 Hz4.2 kW 60 HzVariants 2
MINK MM 1202 AVPumping speed 200 mĀ³/h 50 Hz240 mĀ³/h 60 HzUltimate pressure 100 mbarRated motor power 4.3 kW 50 Hz5.2 kW 60 HzVariants 11
MINK MM 1252 AVPumping speed 245 mĀ³/h 50 Hz290 mĀ³/h 60 HzUltimate pressure 100 mbarRated motor power 5.5 kW 50 Hz6.5 kW 60 HzVariants 8MINK MW 0332 BPumping speed 280 mĀ³/h 50 Hz330 mĀ³/h 60 HzUltimate pressure 0.8 mbarRated motor power 7.5 kW 50 Hz9.5 kW 60 HzVariants 
MINK MV 0312 BPumping speed 290 mĀ³/h 50 Hz345 mĀ³/h 60 HzUltimate pressure 150 mbarRated motor power 5.5 kW 50 Hz6.5 kW 60 HzVariants 4
MINK MM 1322 AVPumping speed 300 mĀ³/h 50 Hz360 mĀ³/h 60 HzUltimate pressure 150 mbarRated motor power 6 kW 50 Hz8 kW 60 HzVariants 10
MINK MV 0310 BPumping speed 345 mĀ³/h 50 Hz345 mĀ³/h 60 HzUltimate pressure 150 mbarRated motor power 6 kW 50 Hz6 kW 60 HzVariants MINK MV 0360 A ECOTORQUEPumping speed 360 mĀ³/h 50 Hz360 mĀ³/h 60 HzUltimate pressure 100 mbarRated motor power 7.5 kW 50 Hz7.5 kW 60 HzVariants 
MINK MM 1402 AVPumping speed 400 mĀ³/h 50 Hz470 mĀ³/h 60 HzUltimate pressure 200 mbarRated motor power 7.5 kW 50 Hz9.5 kW 60 HzVariants 3
MINK MV 0502 BPumping speed 400 mĀ³/h 50 Hz470 mĀ³/h 60 HzUltimate pressure 200 mbarRated motor power 7.5 kW 50 Hz9.5 kW 60 HzVariants 2
MINK MV 0500 BPumping speed 470 mĀ³/h 50 Hz470 mĀ³/h 60 HzUltimate pressure 200 mbarRated motor power 11 kW 50 Hz11 kW 60 HzVariants 
MINK MM 1502 AVPumping speed 500 mĀ³/h 50 Hz600 mĀ³/h 60 HzUltimate pressure 200 mbarRated motor power 11 kW 50 Hz12.6 kW 60 HzVariants 5
MINK MV 0602 BPumping speed 500 mĀ³/h 50 Hz600 mĀ³/h 60 HzUltimate pressure 200 mbarRated motor power 11 kW 50 Hz12.6 kW 60 HzVariants 3
MINK MV 0600 BPumping speed 600 mĀ³/h 50 Hz600 mĀ³/h 60 HzUltimate pressure 200 mbarRated motor power 15 kW 50 Hz15 kW 60 HzVariants 
MINK MV 1202 BPumping speed 950 mĀ³/h 50 Hz1,150 mĀ³/h 60 HzUltimate pressure 200 mbarRated motor power 18.5 kW 50 Hz22 kW 60 HzVariants 3MINK MV 1200 B ECOTORQUEPumping speed 1,150 mĀ³/h 50 Hz1,150 mĀ³/h 60 HzUltimate pressure 200 mbarRated motor power 25 kW 50 Hz25 kW 60 HzVariants Edwards EDC series 2 models
Edwards EDC500Pumping speed 500 mĀ³/h 50 Hz600 mĀ³/h 60 HzUltimate pressure 200 mbarRated motor power 9.2 kW 50 Hz11 kW 60 HzVariants 5Edwards EDC1000Pumping speed 950 mĀ³/h 50 Hz1,140 mĀ³/h 60 HzUltimate pressure 200 mbarRated motor power 18.5 kW 50 Hz22 kW 60 HzVariants 5Edwards GV series 2 models
Edwards Drystar GV80Pumping speed 82 mĀ³/h 50 Hz94 mĀ³/h 60 HzUltimate pressure 0.03 mbarRated motor power 4 kW 50 Hz4 kW 60 HzVariants 7Edwards GV110Pumping speed 110 mĀ³/h 50 Hz110 mĀ³/h 60 HzUltimate pressure 6 Ć 10-3 mbarRated motor power 4 ā 5.5 kW 50 Hz4 ā 5.5 kW 60 HzVariants 3Edwards nEDC series 3 models
Edwards nEDC65Pumping speed 65 mĀ³/h 50 Hz78 mĀ³/h 60 HzUltimate pressure 50 mbarRated motor power 1.8 kW 50 Hz2.2 kW 60 HzVariants 7Edwards nEDC150Pumping speed 150 mĀ³/h 50 Hz180 mĀ³/h 60 HzUltimate pressure 50 mbarRated motor power 3.7 kW 50 Hz3.7 kW 60 HzVariants 7Edwards nEDC300Pumping speed 300 mĀ³/h 50 Hz340 mĀ³/h 60 HzUltimate pressure 140 ā 200 mbarRated motor power 6.2 ā 7.5 kW 50 Hz7.5 kW 60 HzVariants 8Elmo Rietschle C-VLR series 7 models
C-VLR 100Pumping speed 100 mĀ³/h 50 Hz120 mĀ³/h 60 HzUltimate pressure 150 mbarRated motor power 2.2 kW 50 Hz2.6 kW 60 HzVariants C-VLR 150Pumping speed 150 mĀ³/h 50 HzUltimate pressure 100 mbarRated motor power Variants C-VLR 251Pumping speed 215 mĀ³/h 50 HzUltimate pressure 200 mbarRated motor power Variants C-VLR 301Pumping speed 290 mĀ³/h 50 Hz350 mĀ³/h 60 HzUltimate pressure 150 mbarRated motor power 5.5 kW 50 Hz6.5 kW 60 HzVariants C-VLR 401Pumping speed 400 mĀ³/h 50 Hz480 mĀ³/h 60 HzUltimate pressure 200 mbarRated motor power 7.5 kW 50 Hz9 kW 60 HzVariants C-VLR 501Pumping speed 500 mĀ³/h 50 Hz600 mĀ³/h 60 HzUltimate pressure 200 mbarRated motor power 11 kW 50 Hz12.6 kW 60 HzVariants C-VLR 1000Pumping speed 950 mĀ³/h 50 Hz1,140 mĀ³/h 60 HzUltimate pressure 200 mbarRated motor power 18.5 kW 50 Hz22 kW 60 HzVariants Elmo Rietschle C-VLU series 4 models
C-VLU 301Pumping speed 265 mĀ³/h 50 HzUltimate pressure 30 mbarRated motor power Variants C-VLU 401Pumping speed 380 mĀ³/h 50 HzUltimate pressure 60 mbarRated motor power Variants C-VLU 501Pumping speed 495 mĀ³/h 50 HzUltimate pressure 60 mbarRated motor power Variants C-VLU 651Pumping speed 600 mĀ³/h 50 HzUltimate pressure 60 mbarRated motor power Variants Leybold CLAWVAC series 5 models
CLAWVAC CP 65 BPumping speed 65 mĀ³/h 50 Hz79 mĀ³/h 60 HzUltimate pressure 50 mbarRated motor power 1.8 ā 2.2 kW 50 Hz2.2 kW 60 HzVariants 8
CLAWVAC CP 150 BPumping speed 152 mĀ³/h 50 Hz184 mĀ³/h 60 HzUltimate pressure 50 mbarRated motor power 3.7 ā 4 kW 50 Hz3.7 kW 60 HzVariants 8
CLAWVAC CP 300 BPumping speed 295 mĀ³/h 50 Hz347 mĀ³/h 60 HzUltimate pressure 140 ā 200 mbarRated motor power 6.2 ā 7.5 kW 50 Hz7.5 kW 60 HzVariants 8CLAWVAC CP 500Pumping speed 500 mĀ³/h 50 Hz600 mĀ³/h 60 HzUltimate pressure 150 ā 200 mbarRated motor power 9.2 kW 50 Hz11 kW 60 HzVariants 5CLAWVAC CP 1000Pumping speed 950 mĀ³/h 50 Hz1,140 mĀ³/h 60 HzUltimate pressure 150 ā 200 mbarRated motor power 18.5 kW 50 Hz22 kW 60 HzVariants 5No model matches these filters.
Atlas Copco DZM VSD+ series 2 models
Atlas Copco DZQ series 1 model
Atlas Copco DZS series 5 models
Atlas Copco DZS VSD+ series 5 models
Becker BCV series 7 models
Becker VARIAIR BCV series 3 models
Busch MINK series 32 models
Edwards EDC series 2 models
Edwards GV series 2 models
Edwards nEDC series 3 models
Elmo Rietschle C-VLR series 7 models
Elmo Rietschle C-VLU series 4 models
Leybold CLAWVAC series 5 models
Models that a manufacturer no longer carries in its current range are not part of this overview; they are listed in the manufacturerās āOutdated modelsā section.
Operating principle
How a claw vacuum pump works
In the housing, two claw-shaped rotors turn in opposite directions ā without contact and with very narrow gaps; a gearbox synchronises them. The shape of the claws ensures that the gas is drawn in, compressed between the rotors and then expelled. The pump therefore already compresses internally.
The drawing shows the basic principle in simplified form. In many designs the ports are at the side and are uncovered by the rotors; the designs of the manufacturers differ in detail.
- SuctionWhen the claw moves past the inlet connection (A), the gas is drawn into the suction chamber (D).
- CompressionThe rotors (C) carry the gas to the discharge side; there the volume between them decreases (E).
- DischargeAs soon as the rotor uncovers the discharge channel, the pre-compressed gas is expelled through the outlet connection (F).
Key figures
The technology in figures
The ranges result from the current models in our range.
Pumping speed (50 Hz)
18 to 1,560 mĀ³/hin our range
Ultimate pressure
6 Ć 10ā»Ā³ to 600 mbarin our range
Rated motor power (50 Hz)
0.5 to 44 kWin our range
Ultimate pressure compared (mbar, logarithmic)
For comparison: the oil-lubricated rotary vane vacuum pumps in our range reach 1 Ć 10ā»Ā³ to 20 mbar.
What characterises the technology
Internal compression
The gas is pre-compressed inside the pump before it is expelled. Compared with designs without internal compression, this saves energy.
Dry compression chamber
The narrow gaps between rotors and housing provide the seal. Lubricants or operating liquids are not required in the compression chamber.
Timing gear
A gearbox ensures that the two rotors run in exact relation to each other without touching.
Versions
Depending on the series, there are corrosion-resistant versions with stainless steel claws and explosion-proof models.
Advantages
What speaks for this technology
- Oil-free compression
- Rotors run without contact
- Internal compression saves energy
- No oil to change in the compression chamber
- Robust for continuous operation
- Air-cooled designs
- Explosion-proof versions, depending on the series
Applications
Where they work
- Woodworkingholding, vacuum pressing
- Printingholding, lifting, moving
- Plasticspneumatic conveying, holding, pick and place
- Pharmaceuticals and packagingpick and place, blister packaging, production of aluminium cans
- Food and beveragespneumatic conveying, central vacuum supply
- Medicine and flat glasscentral vacuum supply; holding, lifting, moving
Frequently asked questions
Questions about claw vacuum pumps
How does a claw vacuum pump work?
Two claw-shaped rotors turn in opposite directions and without contact in the housing. Their shape ensures that the gas is drawn in, compressed between the rotors and expelled. The drawing in the section Operating principle shows every step.
Are claw vacuum pumps oil-free?
In the compression chamber, yes: the narrow gaps between the rotors and the housing provide the seal, and lubricants or operating liquids are not needed there. There is oil only in the timing gear.
What ultimate pressure do claw vacuum pumps reach?
The models in our range state ultimate pressures from 6 Ć 10ā»Ā³ to 600 mbar ā depending on the series and design. In the product overview, the āUltimate pressureā filter narrows down the selection.
From which manufacturers does Ehrler & Beck carry this technology?
Currently from Atlas Copco, Becker, Busch, Edwards, Elmo Rietschle and Leybold. 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 ā 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 ā we will advise you on selection, spare parts and service.
