Turbo Molecular Pump

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Shimadzu Corp TMP 3203LMGA1 Turbo Molecular Pump 1 NO    US $12,000.00

SEIKO SEIKI TURBO MOLECULAR PUMP STP 301CB1    US $12,000.00

Edwards STP XH2603P Turbo Molecular Pump    US $11,950.00

OSAKA TS 443 TURBO MOLECULAR PUMP    US $9,500.00

Shimadzu Corp TMP 2203LMC Turbo Molecular Pump    US $9,000.00

LOT OF TWO EBARA Vacuum Turbo Molecular pump ET600WS    US $6,999.99

Osaka TH53SASAW Turbo Molecular Pump w Controller Power Supply 3620 01337    US $6,004.12

ET600WS A Ebara Turbo Molecular Pump    US $5,997.00

Seiko Seiki Turbo STP 301 Turbo Molecular Pump with SCU 301 Controller    US $4,500.00

BOC EDWARDS STP H301C TURBO MOLECULAR PUMP    US $4,000.00

Osaka Turbo Molecular Pump TH532    US $3,500.00

Shimadzu EI 3203MD TMP Turbo Molecular Pump Power Unit EI 3203MD A1 working    US $3,005.12

Shimadzu EI 3203MD TMP Turbo Molecular Pump Controller Power Unit working    US $3,005.12

Shimadzu EI 3203MD Turbo Molecular Pump Controller Power Unit working damaged    US $3,005.12

Ebara 305W Turbo Molecular Pump Controller working    US $3,004.12

Ebara ET600W Turbo Molecular Pump Controller 600W ETC04 working PWM 20M    US $3,004.12

Ebara Turbo Molecular Pump Controller ET600W working 600W ETC04    US $3,004.12

Ebara Turbo Molecular Pump Controller 305W working    US $3,004.12

Leybold Turbotronik NT 10 Turbo Molecular Pump Controller TURBOVAC 50 Set    US $3,003.12

2 PFEIFFER BALZARS TPU 050 TURBO MOLECULAR VACUUM PUMP    US $2,999.99

SHIMADZU EI D1303M TURBO MOLECULAR PUMP POWER UNIT CONTROLLER    US $2,879.99

Ebara 1604W A Turbo Molecular Pump Controller 3930 01076 working    US $2,504.12

Leybold Turbo Vac 340M Turbo Molecular High Vacuum Pump Rebuilt 340 l s    US $2,350.00

SEIKO SEIKI SCU 21D SEIKO SEKI TURBO MOLECULAR PUMP CONTROL UNIT    US $2,200.00

Ebara 1604W Turbo Molecular Pump Controller AET16 4490 new 3930 01076    US $2,004.12

Turbo Molecular Pump STP 300H SEIKO SEIKI    US $2,000.00

Ebara Turbo Molecular Pump ET300WS Rebuild Needed AS IS    US $1,905.12

Ebara Turbo Molecular Pump ET300WS A Rebuild Needed AS IS    US $1,905.12

Pfeiffer Balzers TPH062H Turbo Molecular Vacuum Pump    US $1,875.00

Varian Turbo V200A Turbo Molecular HV Vacuum Pump 969 9024    US $1,664.99

CIT Alcatel Ty 5100 Turbo Molecular HV Vacuum Pump    US $1,664.99

Pfeiffer Balzers TPH062 Turbo Molecular Vacuum Pump    US $1,625.00

4916 FC Turbo Molecular Pump System    US $1,550.00

ALCATEL CFF 450 TURBO MOLECULAR PUMP CONTROLLER TYPE D 8220    US $1,479.99

OSAKA TURBO MOLECULAR PUMP MODEL TH542ASAW    US $1,419.99

Leybold Turbotronik NT 151 Turbo Molecular Pump Controller Frequency Converter    US $1,295.00

Ebarra ETC04 PWM 20M Turbo Molecular Pump Controller 600W P C2    US $1,250.00

LEYBOLD TURBO TRONIK NT 361 TURBO MOLECULAR PUMP CONTROLLER    US $1,199.00

Ebara Turbo molecular Pump Controller 305W    US $950.00

SEIKO SEIKI TURBO MOLECULAR PUMP CONTROL UNIT STP H1000L    US $795.00

Edwards TURBO MOLECULAR PUMP EXT 70    US $790.00

LEYBOLD TURBOVAC 150CSV TURBO MOLECULAR PUMP    US $729.99

Oerlikon Leybold TurboVac 50 Turbo Molecular Vacuum Pump    US $700.00

NEW Shimadzu Turbo Molecular Pump Control Cable TMP 2203 3403 Pumps 262 78187    US $699.99

Pheiffer Balzers TCP 270 Turbo Molecular Pump Controller TCP270 Power Supply    US $550.00

Shimadzu Turbo Molecular Pump Control Cable 262 78187 TMP 2203 3403 Pumps 3M    US $549.99

Seiko Seiki SCU H1000C STP Turbo Molecular Pump Control Unit STP H1000C as is    US $504.12

SEIKO SEIKI STP THERMO CONTROLLER STC G SCU STC G TURBO MOLECULAR PUMP CONTROL    US $450.00

Shimadzu Turbo Molecular Pump Control Motor Cable 262 76409 TMP 2203 3403 Pumps    US $399.99

principle, construction and working of a turbo molecular drag pump?

If you are thinking about a turbo pump that I am thinking about then I can answer...

I have not heard of it being called that with the "drag" in it.

But basicly the turbo pump is fan with blades that spin really really fast.
It only works under a partial vacume.

As the blades spin around, any molecule that flies at them will be hit by the blades and force down through them.

That is the basic idea

Turbomolecular pump TURBOVAC