Vacuum units DSP | FRP and venturi vacuum generators VD
Vacuum generation for SPREITZER vacuum plates: DSP and FRP vacuum units with 6 – 100 m³/h suction capacity, compressed-air venturi generators, vacuum distributors and accessories.
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- Suction capacity (vacuum units)
- 6 – 100 m³/h
- Pump types
- Rotary vane / liquid ring
- Venturi generators
- 1.6 – 14 m³/h
- Distributor connections
- 5 – 12
Description
To clamp workpieces securely with vacuum, a powerful vacuum unit matched to the application is needed in addition to the vacuum plate. SPREITZER vacuum units complete the vacuum plate clamping system and provide maximum flexibility with a high level of safety.
Depending on the version, the units work with dry-running or oil-lubricated rotary vane pumps (DSP) or liquid ring pumps (FRP). In the DSP Pro versions, the liquid separator also serves as a vacuum reservoir. Components for system monitoring and interfaces for integration into the control system of the CNC machining centre ensure safe operation.
Construction of the DSP units: emergency-off function to protect the pump from damage if liquids are drawn in, monitoring of the operating vacuum, visual and audible warning device, visual monitoring of the liquid level in the reservoir, manual valves for draining the liquid and shutting off the vacuum supply. Advanced vacuum units with a higher level of automation are available on request.
A complete system consists of a vacuum plate and a vacuum unit. In addition to vacuum on/off and level monitoring, the vacuum unit provides system monitoring via an integrated vacuum switch, which can be synchronised with the machine control via an interface. Machining can thus be stopped automatically if the clamping force drops.
A narrow or long suction hose reduces the suction capacity of the vacuum pump. From a hose length of 2 – 3 m, the next larger hose diameter or several hoses combined with a manifold distributor are recommended to achieve the required cross-section.
Venturi vacuum generators produce the vacuum with compressed air; they are an economical option and need no additional electrical connections on the machine. Vacuum distributors can be attached easily to the frame of a CNC milling machine or mounted on a wall.
Further accessories available on request include hole rubber mats with a 20 mm grid (also suitable for plates with a 10 mm hole grid), air-permeable clamp fleece for milling through, and Vilmill, a 0.2 mm fleece with a heat-activated wax surface that forms a seal around the cutter and holds small workpieces in position (it does not work when large amounts of coolant carry the cutting heat away).
Advantages
- Suction capacities from 6 to 100 m³/h for dry machining and machining with coolant
- Liquid ring pumps (FRP Pro) for machining with coolant in continuous operation
- Integrated vacuum switch with interface to the machine control
- Venturi generators: no additional electrical connections on the machine
- Vacuum distributors for mounting on the machine frame or wall
Technical data
Vacuum units
| Model | Design | Suction capacity [m³/h] | Main application | Weight [kg] | Order no. |
|---|---|---|---|---|---|
| DSP 8 | Dry-running rotary vane pump | 8 | Dry machining | 12 | B900501257 |
| DSP 16 | Dry-running rotary vane pump | 16 | Dry machining | 26 | B900501219 |
| DSP 25 | Dry-running rotary vane pump | 25 | Dry machining | 50 | B900501212 |
| DSP 40 | Dry-running rotary vane pump | 40 | Dry machining | 50 | B900501213 |
| DSP 100 | Dry-running rotary vane pump | 100 | Dry machining | 50 | B900501355 |
| DSP 6 Pro | Oil-lubricated rotary vane pump with liquid separator | 6 | Dry machining (machining with coolant) | 30 | B900500139 |
| DSP 18 Pro | Oil-lubricated rotary vane pump with liquid separator | 18 | Dry machining (machining with coolant) | 48 | B900500140 |
| DSP 40 Pro | Oil-lubricated rotary vane pump with liquid separator | 40 | Dry machining (machining with coolant) | 85 | B900500141 |
| DSP 63 Pro | Oil-lubricated rotary vane pump with liquid separator | 63 | Dry machining (machining with coolant) | 100 | B900500142 |
| FRP 10 | Liquid ring pump | 9.7 | Machining with coolant | 17 | B900501320 |
| FRP 25 | Liquid ring pump | 24 | Machining with coolant | 28 | B900501321 |
| FRP 50 | Liquid ring pump | 47 | Machining with coolant | 40 | B900501322 |
| FRP 10 Pro | Liquid ring pump | 9.7 | Machining with coolant in continuous operation | 20 | B900501323 |
| FRP 25 Pro | Liquid ring pump | 24 | Machining with coolant in continuous operation | 30 | B900501324 |
| FRP 50 Pro | Liquid ring pump | 47 | Machining with coolant in continuous operation | 45 | B900501325 |
| FRP 100 Pro | Liquid ring pump | 95 | Machining with coolant in continuous operation | 100 | B900501326 |
Selecting the vacuum unit
| Clamping area | Recommended suction capacity [m³/h] | Vacuum unit (example) |
|---|---|---|
| < 0.12 m² | > 5 | DSP 6 |
| < 0.5 m² | > 16 | DSP 18 |
| < 1 m² | > 21 | DSP 40 |
| < 2 m² | > 61 | DSP 63 |
Venturi vacuum generators
| Model | Suction capacity [m³/h] | Order no. |
|---|---|---|
| VD 2 | 1.6 | B900501327 |
| VD 4 | 3.8 | B900501328 |
| VD 7 | 6.6 | B900501329 |
| VD 10 | 10 | B900501330 |
| VD 14 | 14 | B900501331 |
Vacuum distributors
| Model | Connections | Order no. |
|---|---|---|
| VTR 5 | 5 × 4/6 mm | B900501335 |
| VTR 8 | 8 × 10/12 mm | B900501336 |
| VTR 8 | 8 × G1/4" | B900500157 |
| VTR 12 | 12 × G3/8" | B900501337 |
Further accessories
| Item | Order no. |
|---|---|
| Sealing rubber cord 3 mm, neoprene (10 m) | B900500143 |
| Sealing rubber cord 3.5 mm, neoprene (10 m) | B900500144 |
| Sealing rubber cord 4 mm, neoprene (10 m) | B900501310 |
| Sealing rubber cord 5 mm, neoprene (10 m) | B900500145 |
| Sealing rubber cord 5.5 mm, neoprene (10 m) | B900500146 |
| Sealing rubber cord 4 mm, silicone (10 m) | B900501644 |
| Fixed stop for SPVPL MA / MAR (with set screw and knurled nut) | B900500148 |
| Friction pad for SPVPL MAR | B900500149 |
| Vacuum hose Ø 21 – 12 mm for SPVPL MA and MAR (per m) | B900500150 |
| Vacuum hose Ø 34 – 25 mm for SPVPL MA and MAR (per m) | B900500151 |
| Hose clamp Ø 16 – 27 mm | B900500152 |
| Hose clamp Ø 20 – 32 mm | B900500153 |
| Hose nozzle G1/4, Ø 12 mm | B900500154 |
| Hose nozzle G3/4, Ø 12 mm | B900500155 |
| Hose nozzle G3/4, Ø 25 mm | B900500156 |
| Clamping claw M6, 20 × 10 × 50 mm | B900500147 |
| Clamping claw M8, 25 × 12 × 60 mm | B900501342 |
| Clamping claw M12, 40 × 20 × 100 mm | B900501343 |
| Clamping claw M12, 40 × 20 × 125 mm | B900501344 |
| Clamping claw M12, 40 × 20 × 160 mm | B900501345 |
The sealing rubber cord is used to seal vacuum grid plates with slots. Its diameter depends on the cross-section of the slot; if the plate is reworked, a correspondingly smaller cord diameter must be selected.
