Rebuilt Seiko Seiki Turbo Pumps

STP 301
Model Rebuilt
STP-300 $7,000
STP-301CB1 $9,500
STP-400 $8,500
STP-451C $9,000
STP-600 $14,000
STP-H600 $19,500
STP-603 $19,500
STP-803 $20,500
STP-A803C $21,000
STP-1000 $16,500
STP-1000C $19,500
STPH200C ask
STP-H1000C ask

STP 301
Model Rebuilt
STP-1003C ask
STP-H1301C $19,500
STP-H1301 $19,500
STP-H1303CV3 ask
STP-A1303C $25,000
STP-A1603C $18,500
STP-H2000C $22,900
STP-H2001C $19,500
STP-H2001K2 ask
STP-H2002C $19,500
STP-A2203PV ask
STP-F2203C ask
STP-A2503PV $27,500

The Seiko Seiki turbo pumps use magnetically levitated bearings, which have several benefits. There is no risk of vacuum contamination, a vital feature in semiconductor and scientific applications where even the minutest impurity will affect results. Noise levels are low and vibration is almost imperceptible - the peak-to-peak level is less than 0.02 mµ, an amplitude which remains constant throughout the life of the pump and is free from troublesome sub-harmonics. Magnetic bearings do not need maintenance, an important factor in processes producing chemical or radioactive contamination.

An STP pump can be installed in any orientation and operate by remote control. If any rotor imbalance occurs (by deposition of process by-products, for example) sensors detect changes in its motion and compensate the magnetic fields accordingly. There are backup precision mechanical bearings to protect the pump in the event of a total disruption of magnetic suspension or a sudden massive air inrush that overcomes the magnetic bearing stiffness.

Model names ending in a C are corrosion-resistant, with nickel-coated rotors and stators and a nitrogen purge port. Ones with a prefix of H or A are high throughput pumps incorporating a hybrid pumping mechanism for higher gas flow. These are optimized for processes such as plasma etch.

Item STP-300 STP-600 STP-1000 STP-2000
Flange size Inlet flange ISO100/6"CF ISO160 ISO200 ISO250/12"CF
Outlet flange NW25 NW40
Pumping speed (l/s) N2 340 650 1000 2000
He 330 600 900 1800
H2 310 550 800 1600
Compression Ratio N2 >108
He 2 x 105 107 105
H2 1 x 104 105 104
Ultimate Pressure   Pa(Torr) 10-8 10-9
Rated speed (rpm) 48,000 35,000 27,000
Starting time (min) 10 6 7
Vibration µm (P-P) <0.01
Baking Temp. (°C) <120
Lubricating oil Not necessary
Installation position Free
Type of cooling Spontaneous cooling
Standard aux. pump (l/min) 240 340 540
Weight (kg)
Pump 12 30 31 65
Controller 27 21 40

Item STP-H300 STP-H600 STP-H1000 STP-H2000
Flange size Inlet flange ISO100/6"CF ISO160 ISO200 ISO250/12"CF
Outlet flange NW25 NW40
Pumping speed (l/s) N2 320 600 1000 2000
He 290 550 900 1800
H2 250 500 800 1600
Compression Ratio N2 >108
He 2 x 105
H2 104 105 103
Ultimate Pressure   Pa(Torr) 10-10 10-7(10-9) after baking 10-9
Maximum Inlet pressure (Torr) Cooled with air/water: - 0.50/0.04 0.13/0.01
Maximum Outlet pressure (Torr) Cooled with air/water: - 4/3 3/3
Rated speed (rpm) 48,000 35,000 27,000
Starting time (min) 10 6 7
Vibration µm (O-P) <0.01 <0.02
Baking Temp. (°C) <120
Lubricating oil - Not necessary -
Installation position - Free -
Standard aux. pump (l/min) - 240 -
Weight (kg) 20 35 65
Dimensions(mm) - Φ245 x H339 Φ245 x H319 -
Ambient temp. range (°C) 0 to 40
Storage temp. range (°C) -25 to +55
Digital Manuals

STP H600/H1000

  1. Intro, Table of Contents, and Precautions for safe operation
  2. Precautions continued and Installation
  3. Operation
  4. Operation continued
  5. Operation continued, Internal Battery and External Battery
  6. Installation of External Battery, Maintenance and Inspection, Storage and Disposal
  7. Trouble Shooting


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