Drives and Motions
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Mechanical Hand Manual 280mm Symmetrical Plain Jaw Linear & Rotatory MovementSKU: ZMH275S4 to 6 weeks delivery£4,720.86Mechanical hands are used for transferring a sample where linear, angular and rotary movement is required. The pistol grip which actuates the movement and the use of edge welded bellows, gives the user a true 'feeling' of position inside the vacuum chamber to give a controlled transfer. These can be supplied with or without the pincer grip. If supplied with a pincer, these can be inline or perpendicular, with plain jaws or jaws to accept the flag style sample plate. -
Mechanical Hand Manual 80mm Perpendicular Plain Jaw Linear & Rotatory MovementSKU: ZMH075P4 to 6 weeks delivery£2,794.93Mechanical hands are used for transferring a sample where linear, angular and rotary movement is required. The pistol grip which actuates the movement and the use of edge welded bellows, gives the user a true 'feeling' of position inside the vacuum chamber to give a controlled transfer. These can be supplied with or without the pincer grip. If supplied with a pincer, these can be inline or perpendicular, with plain jaws or jaws to accept the flag style sample plate. -
Mechanical Hand Manual 151mm Perpendicular Plain Jaw Linear & Rotatory MovementSKU: ZMH150P4 to 6 weeks delivery£3,663.95Mechanical hands are used for transferring a sample where linear, angular and rotary movement is required. The pistol grip which actuates the movement and the use of edge welded bellows, gives the user a true 'feeling' of position inside the vacuum chamber to give a controlled transfer. These can be supplied with or without the pincer grip. If supplied with a pincer, these can be inline or perpendicular, with plain jaws or jaws to accept the flag style sample plate. -
Mechanical Hand Manual 237mm Perpendicular Plain Jaw Linear & Rotatory MovementSKU: ZMH225P4 to 6 weeks delivery£4,439.01Mechanical hands are used for transferring a sample where linear, angular and rotary movement is required. The pistol grip which actuates the movement and the use of edge welded bellows, gives the user a true 'feeling' of position inside the vacuum chamber to give a controlled transfer. These can be supplied with or without the pincer grip. If supplied with a pincer, these can be inline or perpendicular, with plain jaws or jaws to accept the flag style sample plate. -
Mechanical Hand Manual 280mm Perpendicular Plain Jaw Linear & Rotatory MovementSKU: ZMH275P4 to 6 weeks delivery£4,720.86Mechanical hands are used for transferring a sample where linear, angular and rotary movement is required. The pistol grip which actuates the movement and the use of edge welded bellows, gives the user a true 'feeling' of position inside the vacuum chamber to give a controlled transfer. These can be supplied with or without the pincer grip. If supplied with a pincer, these can be inline or perpendicular, with plain jaws or jaws to accept the flag style sample plate. -
Mechanical Hand Manual 80mm Inline Flag Jaw Linear & Rotatory MovementSKU: ZMH075FL4 to 6 weeks delivery£3,196.09Mechanical hands are used for transferring a sample where linear, angular and rotary movement is required. The pistol grip which actuates the movement and the use of edge welded bellows, gives the user a true 'feeling' of position inside the vacuum chamber to give a controlled transfer. These can be supplied with or without the pincer grip. If supplied with a pincer, these can be inline or perpendicular, with plain jaws or jaws to accept the flag style sample plate. -
Mechanical Hand Manual 151mm Inline Flag Jaw Linear & Rotatory MovementSKU: ZMH150FL4 to 6 weeks delivery£3,938.74Mechanical hands are used for transferring a sample where linear, angular and rotary movement is required. The pistol grip which actuates the movement and the use of edge welded bellows, gives the user a true 'feeling' of position inside the vacuum chamber to give a controlled transfer. These can be supplied with or without the pincer grip. If supplied with a pincer, these can be inline or perpendicular, with plain jaws or jaws to accept the flag style sample plate. -
Mechanical Hand Manual 237mm Inline Flag Jaw Linear & Rotatory MovementSKU: ZMH225FL4 to 6 weeks delivery£3,881.74Mechanical hands are used for transferring a sample where linear, angular and rotary movement is required. The pistol grip which actuates the movement and the use of edge welded bellows, gives the user a true 'feeling' of position inside the vacuum chamber to give a controlled transfer. These can be supplied with or without the pincer grip. If supplied with a pincer, these can be inline or perpendicular, with plain jaws or jaws to accept the flag style sample plate. -
Mechanical Hand Manual 280mm Inline Flag Jaw Linear & Rotatory MovementSKU: ZMH275FL4 to 6 weeks delivery£4,014.90Mechanical hands are used for transferring a sample where linear, angular and rotary movement is required. The pistol grip which actuates the movement and the use of edge welded bellows, gives the user a true 'feeling' of position inside the vacuum chamber to give a controlled transfer. These can be supplied with or without the pincer grip. If supplied with a pincer, these can be inline or perpendicular, with plain jaws or jaws to accept the flag style sample plate. -
Wobble Stick Flag Right Angle 120mm TravelSKU: ZWS1204 to 6 weeks delivery£3,395.53Dedicated 18mm flag style pincer grip wobble stick are used where linear and angular movement is required to move flag sample plates in vacuum These come in two designs, inline and perpendicular sample pick up. Edge welded bellows, gives the user a true 'feeling' of position inside the vacuum chamber to give a controlled positioning. -
Wobble Stick Flag Right Angle 180mm TravelSKU: ZWS1804 to 6 weeks delivery£4,628.95Dedicated 18mm flag style pincer grip wobble stick are used where linear and angular movement is required to move flag sample plates in vacuum These come in two designs, inline and perpendicular sample pick up. Edge welded bellows, gives the user a true 'feeling' of position inside the vacuum chamber to give a controlled positioning. -
Wobble Stick Flag Right Angle 270mm TravelSKU: ZWS2704 to 6 weeks delivery£4,860.75Plain wobble sticks are used where linear and angular movement is required to move a custom probe mounted to the end of the linear movement, via a 5mm mounting hole. Edge welded bellows, gives the user a true 'feeling' of position inside the vacuum chamber to give a controlled positioning. -
Wobble Stick Flag Inline 120mm TravelSKU: ZWS120IL4 to 6 weeks delivery£3,395.53Dedicated 18mm flag style pincer grip wobble stick are used where linear and angular movement is required to move flag sample plates in vacuum These come in two designs, inline and perpendicular sample pick up. Edge welded bellows, gives the user a true 'feeling' of position inside the vacuum chamber to give a controlled positioning. -
Wobble Stick Flag Inline 180mm TravelSKU: ZWS180IL£3,934.61Dedicated 18mm flag style pincer grip wobble stick are used where linear and angular movement is required to move flag sample plates in vacuum These come in two designs, inline and perpendicular sample pick up. Edge welded bellows, gives the user a true 'feeling' of position inside the vacuum chamber to give a controlled positioning. -
Wobble Stick Flag Inline 270mm TravelSKU: ZWS270IL4 to 6 weeks delivery£4,507.24Dedicated 18mm flag style pincer grip wobble stick are used where linear and angular movement is required to move flag sample plates in vacuum These come in two designs, inline and perpendicular sample pick up. Edge welded bellows, gives the user a true 'feeling' of position inside the vacuum chamber to give a controlled positioning. -
Mag Drive linear & Independent Rotation 914mm Travel 70mm OD FlangeSKU: ZMLRD2094 to 6 weeks delivery£3,757.89High power magnetically coupled precision linear travel with optional rotation. The MLD series offers linear only, where rotation is not required, or the MLRD series offers an independent 360° rotation shaft, where rotation is required. These only use UHV accepted metals within its construction. These probes have a front bearing housing supporting the linear shaft, which offers higher accuracy over the MLRV series for repeatability tasks. On the MLRD series, the independent rotation shaft also… -
Mag Drive linear & Independent Rotation 610mm Travel 70mm OD FlangeSKU: ZMLRD2064 to 6 weeks delivery£4,421.05High power magnetically coupled precision linear travel with optional rotation. The MLD series offers linear only, where rotation is not required, or the MLRD series offers an independent 360° rotation shaft, where rotation is required. These only use UHV accepted metals within its construction. These probes have a front bearing housing supporting the linear shaft, which offers higher accuracy over the MLRV series for repeatability tasks. On the MLRD series, the independent rotation shaft also… -
Mag Drive linear & Independent Rotation 460mm Travel 70mm OD FlangeSKU: ZMLRD2044 to 6 weeks delivery£3,640.46High power magnetically coupled precision linear travel with optional rotation. The MLD series offers linear only, where rotation is not required, or the MLRD series offers an independent 360° rotation shaft, where rotation is required. These only use UHV accepted metals within its construction. These probes have a front bearing housing supporting the linear shaft, which offers higher accuracy over the MLRV series for repeatability tasks. On the MLRD series, the independent rotation shaft also… -
Mag Drive linear & Independent Rotation 305mm Travel 70mm OD FlangeSKU: ZMLRD2034 to 6 weeks delivery£3,640.46High power magnetically coupled precision linear travel with optional rotation. The MLD series offers linear only, where rotation is not required, or the MLRD series offers an independent 360° rotation shaft, where rotation is required. These only use UHV accepted metals within its construction. These probes have a front bearing housing supporting the linear shaft, which offers higher accuracy over the MLRV series for repeatability tasks. On the MLRD series, the independent rotation shaft also… -
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Rack Drive Linear & Rotation 914mm Movement DN150CFSKU: ZRLRP6094 to 6 weeks delivery£0.00Heavy duty high precision Rack & Pinion linear travel with optional rotation, with both axis controlled by rotatory drives. The LRP series offers linear only, where rotation is not required, or the RLRP series which offers an independent 360° rotation shaft, for transferring samples with greater accuracy then the MLD/R series. These use UHV accepted metals within its construction. The probes have a front bearing housing supporting the shaft, which offers higher accuracy over the MLRV probe for… -
Rack Drive Linear & Pinion 914mm Movement DN150CFSKU: ZLRP6094 to 6 weeks delivery£8,250.86Heavy duty high precision Rack & Pinion linear travel with optional rotation, with both axis controlled by rotatory drives. The LRP series offers linear only, where rotation is not required, or the RLRP series which offers an independent 360° rotation shaft, for transferring samples with greater accuracy then the MLD/R series. These use UHV accepted metals within its construction. The probes have a front bearing housing supporting the shaft, which offers higher accuracy over the MLRV probe for… -
Rack Drive Linear & Pinion 460mm Movement DN150CFSKU: ZLRP6044 to 6 weeks delivery£7,830.28Heavy duty high precision Rack & Pinion linear travel with optional rotation, with both axis controlled by rotatory drives. The LRP series offers linear only, where rotation is not required, or the RLRP series which offers an independent 360° rotation shaft, for transferring samples with greater accuracy then the MLD/R series. These use UHV accepted metals within its construction. The probes have a front bearing housing supporting the shaft, which offers higher accuracy over the MLRV probe for… -
Rack Drive Linear & Rotary 914 mm Travel DN38CFSKU: ZRLRP2094 to 6 weeks delivery£6,490.31High precision Rack & Pinion linear travel with optional rotation, with both axis controlled by rotatory drives. The LRP series offers linear only, where rotation is not required, or the RLRP series which offers an independent 360° rotation shaft, for transferring samples with greater accuracy then the MLD/R series. These use UHV accepted metals within its construction. The probes have a front bearing housing supporting the shaft, which offers higher accuracy over the MLRV probe for… -
Rack Drive Linear & Rotary 610mm Travel DN38CFSKU: ZRLRP2064 to 6 weeks delivery£5,161.92High precision Rack & Pinion linear travel with optional rotation, with both axis controlled by rotatory drives. The LRP series offers linear only, where rotation is not required, or the RLRP series which offers an independent 360° rotation shaft, for transferring samples with greater accuracy then the MLD/R series. These use UHV accepted metals within its construction. The probes have a front bearing housing supporting the shaft, which offers higher accuracy over the MLRV probe for… -
Rack Drive Linear & Rotary 460mm Travel DN38CFSKU: ZRLRP2044 to 6 weeks delivery£5,161.92High precision Rack & Pinion linear travel with optional rotation, with both axis controlled by rotatory drives. The LRP series offers linear only, where rotation is not required, or the RLRP series which offers an independent 360° rotation shaft, for transferring samples with greater accuracy then the MLD/R series. These use UHV accepted metals within its construction. The probes have a front bearing housing supporting the shaft, which offers higher accuracy over the MLRV probe for… -
Rack Drive Linear & Rotary 305mm Linear DN38CFSKU: ZRLRP2034 to 6 weeks delivery£5,014.44High precision Rack & Pinion linear travel with optional rotation, with both axis controlled by rotatory drives. The LRP series offers linear only, where rotation is not required, or the RLRP series which offers an independent 360° rotation shaft, for transferring samples with greater accuracy then the MLD/R series. These use UHV accepted metals within its construction. The probes have a front bearing housing supporting the shaft, which offers higher accuracy over the MLRV probe for… -
Rack Drive Linear & Pinion 914mm Movement DN38CFSKU: ZLRP2094 to 6 weeks delivery£3,920.33High precision Rack & Pinion linear travel with optional rotation, with both axis controlled by rotatory drives. The LRP series offers linear only, where rotation is not required, or the RLRP series which offers an independent 360° rotation shaft, for transferring samples with greater accuracy then the MLD/R series. These use UHV accepted metals within its construction. The probes have a front bearing housing supporting the shaft, which offers higher accuracy over the MLRV probe for… -
Rack Drive Linear & Pinion 610mm Movement DN38CFSKU: ZLRP2064 to 6 weeks delivery£3,694.90High precision Rack & Pinion linear travel with optional rotation, with both axis controlled by rotatory drives. The LRP series offers linear only, where rotation is not required, or the RLRP series which offers an independent 360° rotation shaft, for transferring samples with greater accuracy then the MLD/R series. These use UHV accepted metals within its construction. The probes have a front bearing housing supporting the shaft, which offers higher accuracy over the MLRV probe for… -
Rack Drive Linear & Pinion 460mm Movement DN38CFSKU: ZLRP2044 to 6 weeks delivery£3,520.25High precision Rack & Pinion linear travel with optional rotation, with both axis controlled by rotatory drives. The LRP series offers linear only, where rotation is not required, or the RLRP series which offers an independent 360° rotation shaft, for transferring samples with greater accuracy then the MLD/R series. These use UHV accepted metals within its construction. The probes have a front bearing housing supporting the shaft, which offers higher accuracy over the MLRV probe for… -
Rack Drive Linear & Pinion 305mm Movement DN38CFSKU: ZLRP2034 to 6 weeks delivery£3,473.84High precision Rack & Pinion linear travel with optional rotation, with both axis controlled by rotatory drives. The LRP series offers linear only, where rotation is not required, or the RLRP series which offers an independent 360° rotation shaft, for transferring samples with greater accuracy then the MLD/R series. These use UHV accepted metals within its construction. The probes have a front bearing housing supporting the shaft, which offers higher accuracy over the MLRV probe for… -
Mag Drive Linear 914mm Travel 70mm OD FlangeSKU: ZMLD209£4,775.08High power magnetically coupled precision linear travel with optional rotation. The MLD series offers linear only, where rotation is not required, or the MLRD series offers an independent 360° rotation shaft, where rotation is required. These only use UHV accepted metals within its construction. These probes have a front bearing housing supporting the linear shaft, which offers higher accuracy over the MLRV series for repeatability tasks. On the MLRD series, the independent rotation shaft also… -
Mag Drive Linear 610mm Travel 70mm OD FlangeSKU: ZMLD2064 to 6 weeks delivery£3,816.61High power magnetically coupled precision linear travel with optional rotation. The MLD series offers linear only, where rotation is not required, or the MLRD series offers an independent 360° rotation shaft, where rotation is required. These only use UHV accepted metals within its construction. These probes have a front bearing housing supporting the linear shaft, which offers higher accuracy over the MLRV series for repeatability tasks. On the MLRD series, the independent rotation shaft also… -
Mag Drive Linear 460mm Travel 70mm OD FlangeSKU: ZMLD2044 to 6 weeks delivery£3,816.61High power magnetically coupled precision linear travel with optional rotation. The MLD series offers linear only, where rotation is not required, or the MLRD series offers an independent 360° rotation shaft, where rotation is required. These only use UHV accepted metals within its construction. These probes have a front bearing housing supporting the linear shaft, which offers higher accuracy over the MLRV series for repeatability tasks. On the MLRD series, the independent rotation shaft also… -
Mag Drive Linear 305mm Travel 70mm OD FlangeSKU: ZMLD2034 to 6 weeks delivery£3,346.88High power magnetically coupled precision linear travel with optional rotation. The MLD series offers linear only, where rotation is not required, or the MLRD series offers an independent 360° rotation shaft, where rotation is required. These only use UHV accepted metals within its construction. These probes have a front bearing housing supporting the linear shaft, which offers higher accuracy over the MLRV series for repeatability tasks. On the MLRD series, the independent rotation shaft also… -
Mag Drive Linear & Rotation 1.45m Travel 114mm OD FlangeSKU: ZMLRV4144 to 6 weeks delivery£3,007.81High power all metal magnetically coupled coarse linear and rotary transfer device for UHV applications, using only UHV accepted metals within its construction. Providing smooth sample transfer movement within the vacuum chamber, where high accuracy is not required. -
Mag Drive Linear & Rotation 1.25m Travel 114mm OD FlangeSKU: ZMLRV4124 to 6 weeks delivery£3,102.80High power all metal magnetically coupled coarse linear and rotary transfer device for UHV applications, using only UHV accepted metals within its construction. Providing smooth sample transfer movement within the vacuum chamber, where high accuracy is not required. -
Mag Drive Linear & Rotation 914mm Travel 114mm OD FlangeSKU: ZMLRV4094 to 6 weeks delivery£2,633.06High power all metal magnetically coupled coarse linear and rotary transfer device for UHV applications, using only UHV accepted metals within its construction. Providing smooth sample transfer movement within the vacuum chamber, where high accuracy is not required. -
Mag Drive Linear & Rotation 610mm Travel 114mm OD FlangeSKU: ZMLRV406£2,513.09High power all metal magnetically coupled coarse linear and rotary transfer device for UHV applications, using only UHV accepted metals within its construction. Providing smooth sample transfer movement within the vacuum chamber, where high accuracy is not required. -
Mag Drive Linear & Rotation 914mm Travel 70mm OD FlangeSKU: ZMLRV2094 to 6 weeks delivery£1,770.15High power all metal magnetically coupled coarse linear and rotary transfer device for UHV applications, using only UHV accepted metals within its construction. Providing smooth sample transfer movement within the vacuum chamber, where high accuracy is not required. -
Mag Drive Linear & Rotation 610mm Travel 70mm OD FlangeSKU: ZMLRV2064 to 6 weeks delivery£1,724.10High power all metal magnetically coupled coarse linear and rotary transfer device for UHV applications, using only UHV accepted metals within its construction. Providing smooth sample transfer movement within the vacuum chamber, where high accuracy is not required. -
Mag Drive Linear & Rotation 460mm Travel 70mm OD FlangeSKU: ZMLRV204£1,678.04High power all metal magnetically coupled coarse linear and rotary transfer device for UHV applications, using only UHV accepted metals within its construction. Providing smooth sample transfer movement within the vacuum chamber, where high accuracy is not required. -
Mag Drive Linear & Rotation 305mm Travel 70mm OD FlangeSKU: ZMLRV2034 to 6 weeks delivery£1,631.99High power all metal magnetically coupled coarse linear and rotary transfer device for UHV applications, using only UHV accepted metals within its construction. Providing smooth sample transfer movement within the vacuum chamber, where high accuracy is not required. -
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Rotary Feedthrough Single Stage DC Motor DN38CFSKU: ZDPRF25D4 to 6 weeks delivery£5,298.78Differentially Pumped Rotary Feedthroughs provides the means of translating rotation through a vessel wall without losing vacuum integrity, enabling probes to be inserted without effect on the chamber pressure. To maintain the rotary seal, one vacuum port is mounted to the base flange of the assembly allowing connection to an appropriate independent pump. These have a 25mm clear bore with coarse and fine control available in addition to motorised options. -
Rotary Feedthrough Bearing Replacement Set DPRF55/DPRF552SKU: ZDPRF55B4 to 6 weeks delivery£163.53 -
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Rotary Platform Stepper Motor Wired 102.5mm Bore DN100CFSKU: ZRP100W4 to 6 weeks delivery£6,709.79Rotating platforms require minimal space at only 43mm and offer the means of translating rotation through a vessel wall without losing vacuum integrity, enabling probes such as large Cryostats to be inserted without effect on the chamber pressure. To maintain the rotary seal, two vacuum ports are mounted to the base flange of the assembly allowing connection to an appropriate independent pumps. These have a 55mm clear bore with coarse and fine control available in addition to motorised options. -
Rotary Platform Stepper Motor / Encoded 102.5mm Bore DN100CFSKU: ZRP100E4 to 6 weeks delivery£7,387.67Rotating platforms require minimal space at only 43mm and offer the means of translating rotation through a vessel wall without losing vacuum integrity, enabling probes such as large Cryostats to be inserted without effect on the chamber pressure. To maintain the rotary seal, two vacuum ports are mounted to the base flange of the assembly allowing connection to an appropriate independent pumps. These have a 55mm clear bore with coarse and fine control available in addition to motorised options. -
Rotary Platform With Drive Handle 102.5mm Bore DN100CFSKU: ZRP100H4 to 6 weeks delivery£6,548.94Rotating platforms require minimal space at only 43mm and offer the means of translating rotation through a vessel wall without losing vacuum integrity, enabling probes such as large Cryostats to be inserted without effect on the chamber pressure. To maintain the rotary seal, two vacuum ports are mounted to the base flange of the assembly allowing connection to an appropriate independent pumps. These have a 55mm clear bore with coarse and fine control available in addition to motorised options. -
Rotary Platform Coarse 102.5mm Bore DN100CFSKU: ZRP100C4 to 6 weeks delivery£4,380.22Rotating platforms require minimal space at only 43mm and offer the means of translating rotation through a vessel wall without losing vacuum integrity, enabling probes such as large Cryostats to be inserted without effect on the chamber pressure. To maintain the rotary seal, two vacuum ports are mounted to the base flange of the assembly allowing connection to an appropriate independent pumps. These have a 55mm clear bore with coarse and fine control available in addition to motorised options. -
Rotary Feedthrough DPRF552 Seal Kit fits all 3 Seal VersionsSKU: ZXSMS03-34 to 6 weeks delivery£455.11 -
Rotary Feedthrough DPRF55 Seal Kit fits all 2 Seal VersionsSKU: ZXSMS034 to 6 weeks delivery£392.20 -
Rotary Feedthrough Dual Stage Stepper Motor/Encoder DN64CFSKU: ZDPRF552ME4 to 6 weeks delivery£5,306.29Differentially Pumped Rotary Feedthroughs provides the means of translating rotation through a vessel wall without losing vacuum integrity, enabling probes such as Cryostats to be inserted without effect on the chamber pressure. To maintain the rotary seal, two vacuum ports are mounted to the base flange of the assembly allowing connection to an appropriate independent pumps. These have a 55mm clear bore with coarse and fine control available in addition to motorised options. -
Rotary Feedthrough Dual Stage with Stepper Motor DN64CFSKU: ZDPRF552W4 to 6 weeks delivery£4,990.95Differentially Pumped Rotary Feedthroughs provides the means of translating rotation through a vessel wall without losing vacuum integrity, enabling probes such as Cryostats to be inserted without effect on the chamber pressure. To maintain the rotary seal, two vacuum ports are mounted to the base flange of the assembly allowing connection to an appropriate independent pumps. These have a 55mm clear bore with coarse and fine control available in addition to motorised options. -
Rotary Feedthrough Dual Stage with Drive Handle DN64CFSKU: ZDPRF552H4 to 6 weeks delivery£5,187.24Differentially Pumped Rotary Feedthroughs provides the means of translating rotation through a vessel wall without losing vacuum integrity, enabling probes such as Cryostats to be inserted without effect on the chamber pressure. To maintain the rotary seal, two vacuum ports are mounted to the base flange of the assembly allowing connection to an appropriate independent pumps. These have a 55mm clear bore with coarse and fine control available in addition to motorised options. -
Rotary Feedthrough Dual Stage Coarse DN64CFSKU: ZDPRF5524 to 6 weeks delivery£3,914.47Differentially Pumped Rotary Feedthroughs provides the means of translating rotation through a vessel wall without losing vacuum integrity, enabling probes such as Cryostats to be inserted without effect on the chamber pressure. To maintain the rotary seal, two vacuum ports are mounted to the base flange of the assembly allowing connection to an appropriate independent pumps. These have a 55mm clear bore with coarse and fine control available in addition to motorised options. -
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Rotary Feedthrough Single Stage Stepper Motor/Encoder DN38CFSKU: ZDPRF25E4 to 6 weeks delivery£4,881.06Differentially Pumped Rotary Feedthroughs provides the means of translating rotation through a vessel wall without losing vacuum integrity, enabling probes to be inserted without effect on the chamber pressure. To maintain the rotary seal, one vacuum port is mounted to the base flange of the assembly allowing connection to an appropriate independent pump. These have a 25mm clear bore with coarse and fine control available in addition to motorised options.