Double Acting Position Sensing Top Flange Inch Hydraulic Work Supports
- The Return Position Sensors use air pressure to communicate that the work support has retracted and that the fixture can be unloaded/loaded.
- Sensor monitors work support position to prevent crashes in automated systems.
- Fail safe design requires air pressure to build before sensing the retracted position.
- Dual wipers keep chips and debris from invading support.
- Pressure Relief Vent keeps sealed and air path free from foreign material.
- Air connection through face sealed o-ring of top flange body or externally plumbed through NPT ports on sensor housing.
- Top flange body style allows for hydraulic connection through face sealed o-rings or through SAE ports.
- Aluminum sensor housing is Black anodized for superior corrosion resistance.
- Optional In-Port Sequence Valve is a sequencing device with reverse free flow check valve.
- Optional In-Port Flow Control is a meter-in device with a reverse free flow check valve.
- US Patent No. 8,444,128.
Device Operation
The return position sensor unit requires continuous regulated air pressure. In the retracted position, air pressure will build in the system to the regulated set pressure. The air logic switch detects retracted pressure and signals that work supports have retracted. When the work support extends, the internal check is opened and air vents from the device. The system air pressure falls to the extended pressure and the air logic switch resets. When the support is then retracted, the internal check is closed and air pressure again builds to regulated value. Air pressure switch detects retracted pressure and again signals device is in retracted position.
* Support capacities are listed at 5,000 psi maximum operating pressure. Support capacities for other pressures must be determined by consulting the capacity graph.
** Return Position Sensor should be used to monitor retracted position only and not plunger advance or plunger lock.
*** In-Port valves require the use of manifold mount ports.
For proper sealing, mating surface must be flat within 0.003 with a maximum 63 µin Ra surface finish.
* Plunger stroke “B” is the available work zone of the plunger. The work piece must be positioned inside this window to prevent part ejection.
** Shuttle Stroke “C” is the stroke the shuttle travels to position the work support plunger out to the work piece. The shuttle moves the full range of this stroke every cycle.
*** The difference between “C” and “B” (C-B) equals the minimum distance the plunger is below the part in the retracted position.
For proper sealing, mating surface must be flat within 0.003 in. with a maximum 63 µin Ra surface finish.
Vektek recommends only 17-7 stainless steel springs.
Too light of custom spring force may not actuate plunger, especially if a custom contact bolt is used.
Too heavy of custom spring may cause damage to devices internal components.
VEKTEK CANNOT GUARANTEE THAT CUSTOM SPRINGS WILL PROVIDE PROPER PLUNGER ACTUATION.
For Spherical Work Support Contact Bolt, click here.
Recommended Pneumatic Circuit Design
- Use Vektek Air Sensing Control Kit (Model #50-8240-00).
- Parallel circuit design with minimum of 0.125″ inside diameter feed line size
- Circuit design should be simple and free from flow restrictions that can cause excessive pressure drop.
- The maximum number of Return Position Sensors in one circuit is a function of the circuit design and pressure drop over the length of the circuit path. Vektek has tested 10 devices plumbed in parallel with excellent results.
Recommended System Setup
- Set air pressure regulator to 12 psi when all Work Supports in the system are in the retracted position.
- Adjust and set air flow control so that air pressure falls to 3 psi when the work support at the furthest point of the pneumatic circuit is in the extended position and all other supports in the circuit are retracted.
- Set the air pressure sensor Retract switch point to 10 psi.
- Set the air pressure sensor Extend reset switch point to 5 psi.
| Model No. | Support Capacity (lb.) | Contact Force (lb.) | Stroke (in.) | Shuttle Stroke (in.) | Body Dia. | Piston Area (sq. in.) Extend | Piston Area (sq. in.) Retract | Oil Capacity Extend (cu. in.) | Oil Capacity Retract (cu. in.) | Maximum Oil Flow Rate (cu. in./min) | Port X For Optional In-Port Valves |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 10-0208-01 | 2750 | 5.2-8.6 | 0.38 | 0.50 | 2.12 | 1.62 | 0.52 | 0.81 | 0.26 | 70 | SAE 4 X 0.58 |
| 10-0212-01 | 5500 | 6.9-10.5 | 0.38 | 0.50 | 2.99 | 3.55 | 0.79 | 1.78 | 0.40 | 150 | SAE 4 X 0.58 |
| Model No. | A | B | C | D | E | F | G | H | J | K | L | M | N | P | Q | R | S | T | V | W | X | Y | Z | AA | AB | AC | AD | AE | AF |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 10-0208-01 | 3.19 | 0.38 | 0.50 | 2.32 | 1.72 | 1.91 | 2.12 | 1.25 | 0.75 | 2.90 | 1.13 | 2.25 | 1.13 | 0.94 | 2.25 | 0.22 | 0.63 | 1.88 | 0.19 | 0.63 | 9/16-18 X 0.31 | 0.69 | 0.56 | 0.51 | SAE 4 | SAE 4 | 1.36 | 0.50 | 1.52 |
| 10-0212-01 | 3.41 | 0.38 | 0.50 | 2.69 | 1.72 | 1.91 | 2.99 | 2.00 | 1.25 | 3.69 | 1.56 | 3.13 | 1.56 | 1.28 | 3.12 | 0.28 | 0.70 | N/A | 0.25 | 1.00 | 3/4-16 x 0.50 | 1.13 | 0.56 | 0.63 | SAE 4 | SAE 4 | 1.75 | 0.75 | 1.86 |
| Model No. | A | B | C | D | E | F |
|---|---|---|---|---|---|---|
| 10-0208-01 | 2.130 | 0.938 | 10-32 UNF | 1.360 | 0.500 | 1.52 |
| 10-0212-01 | 3.005 | 1.281 | 1/4-28 UNF | 1.750 | 0.750 | 1.86 |
| Model No. | Support Capacity (lb.) | O-Ring Part Number | O-Ring Size | A | B | C | D | E |
|---|---|---|---|---|---|---|---|---|
| 10-0208-01 | 2750 | 39-0000-72 | -013 | 0.625 | 0.312 | 0.460 | 0.080 | 9/16-18 UNF-2A |
| 10-0212-01 | 5500 | 39-0510-66 | -016 | 0.875 | 0.500 | 0.650 | 0.080 | 3/4-16 UNF-2A |
| Model No. | A | B | C | D | Std Spring OD | Std Spring Wire Ø | Std Spring Free Length | Std Spring Rate (lb./in.) |
|---|---|---|---|---|---|---|---|---|
| 10-0208-01 | 1.69 | 0.51 | 0.46 | 0.38 | 0.48 | 0.051 | 2.25 | 9.3 |
| 10-0212-01 | 1.78 | 0.68 | 0.62 | 0.47 | 0.60 | 0.059 | 2.5 | 9.6 |
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