25mm Clear Bore Single Stage DPRF
The DPRF25 is a differentially pumped rotary feedthrough (DPRF) available in coarse, manual high precision and motorised high precision options. Mounted on a 70mm OD CF flange with 25mm clear bore and single 34mm OD CF pumping port on the base flange. The DPRF25 allows for a small cryostat or cold finger to be inserted and continuously rotated within the vacuum chamber without effect on the ambient chamber pressure. A high capacity load permits up to 80kg pay loads to be tolerated. PTFE seals can be replaced upon maintenance service intervals to prolong the life of the rotary feedthrough.
Key Features
Continuous Rotation into the Chamber
360° Rotation
25mm Clear Bore
Mounted on 70mm OD CF Flange
High Maximum Load Capacity
80kg Axial Load and 9 Nm Axial Load
Replaceable PTFE Seals
Serviceable In The Field
Fully Bakeable to 230°C
With Motors Removed
Leak Rate
1x10-10 mbar l/s -1
Maximum Rotation Speed
3 RPM
Interspace Pumping
Single 34mm OD CF Pumping Port
Information Table
DPRF25 with Actuation Options
| Flange OD mm | Actuation Method | Resolution Degrees ° | Max Rotation Speed RPM | Rotation Torque Nm | Maximum Axial Load Kg | Bakeout Temperature | Order Code |
|---|---|---|---|---|---|---|---|
| 70 | Manual | 2 | - | 4 | 80 | 230°C | ZDPRF25 |
| 70 | High Precision Hand Wheel | 0.05 | 1.5 | 0.2 | 80 | 230°C | ZDPRF25H |
| 70 | Stepper Motor | 0.01 | 3.0 | - | 80 | *230°C | ZDPRF25W |
| 70 | Encoded Stepper Motor | 0.01 | 3.0 | - | 80 | *230°C | ZDPRF25E |
| 70 | DC Motor | - | 3.0 | - | 80 | *230°C | ZDPRF25D |
*230°C with motors removed
DPRFs should be connected to the system or stand alone pump, and should be pumped all the time the system is being pumped.
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