Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X70X530S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X70X530S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 70mm and 530mm give 4 controllable stop positions across a 600mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 170 mm
- Stroke 2530 mm
- Total travel600 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X70X530S
The SCT80X70X530S is a tandem multi-position pneumatic cylinder that delivers four fixed rod positions from two independent piston sections on a single 25 mm rod line. The reachable stops are 0 mm (fully retracted), 70 mm, 530 mm, and the total extended travel of 600 mm. Because the second stroke exceeds 500 mm, this unit is a made-to-order non-standard configuration for applications requiring a long secondary advance.
Each 80 mm bore section generates 2513 N of push force at 0.5 MPa, rising to 4523 N at the maximum operating pressure of 0.9 MPa. The built-in magnet allows CMSG, DMSG, or EMSG sensors to clamp directly onto the tie-rod barrel for end-of-stroke or mid-position confirmation. With a body length A of 296 mm and a 28 mm adjustable air cushion, it provides reliable deceleration across the entire 30-800 mm/s speed range.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X70X530S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X70X530S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 70 / 530 mm |
| Total travel | 600 mm |
| Stop positions | 4 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT3/8 |
| Rod thread | M20×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 28 mm |
| Max stroke / section | Up to 500 mm standard |
Specifications follow the official AirTAC SCT (multi-position) datasheet. SCT is available in bores 32–100; each of the two sections has a 500 mm max standard stroke (800 mm max). This configuration exceeds the 500 mm standard section stroke, so it is a non-standard / made-to-order build. Confirm against the product label before installation. Thread options: PT (standard) / G.
Stop Positions (4)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 70 mm |
| P2 (section 2) | 530 mm |
| P3 (both extended) | 600 mm |
Positions are set by pressurising section 1, section 2, or both. With equal strokes you get 3 distinct positions; with unequal strokes you get 4.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Force is per actuated piston section (single-piston, same as the SC bore): push uses the full bore area, pull subtracts the rod area. Size with a safety margin.
Model Code: Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X70X530S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×70 | Stroke 1 (section 1) in mm. |
| ×530 | Stroke 2 (section 2) in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related types: SC (single rod), SCD (double rod), SCJ (adjustable stroke). SCT mounting: Basic, FA, FB, CA, CB, LB. Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
Where the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X70X530S Is Used
Two-Stage Material Feed
Advances raw stock 70 mm for a pilot operation, then extends a further 530 mm to push the part fully into a CNC lathe collet, using the magnet for position confirmation at each stop.
Dual-Depth Pallet Stop
Provides a 70 mm raised stop for light trays and a 530 mm lowered gate for heavy pallets on a gravity conveyor, with the 600 mm total stroke clearing the lane entirely when retracted.
Long-Reach Clamping & Ejection
Clamps a workpiece with a short 70 mm stroke at 4523 N of force, then after machining, extends to the full 600 mm to eject the finished part onto an outfeed chute.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X70X530S the Right Cylinder?
Choose the SCT80X70X530S when a process needs a short 70 mm positioning move followed by a long 530 mm feed stroke, all from one compact tandem unit. This avoids the complexity and plumbing of two separate cylinders with external stop valves. If the 2513 N push per section at 0.5 MPa is more force than required, stepping down to a 63 mm bore reduces the per-section push to 1559 N at the same pressure, while still offering the same four-position logic.
For a direct replacement, match an AirTAC SCT with an 80 mm bore, strokes of 70 mm and 530 mm, PT port thread, basic mounting, and the -S magnet suffix. Given the 530 mm secondary stroke, ensure the rod is externally guided or the load is centered to prevent side-load deflection and premature seal wear on the 25 mm rod.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 70 + 530 mm suit your layout?
- ✓ Required force at your working pressure
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Plumb the two sections to the correct valves for each stop.
- check Adjust end cushion screws for smooth stops.
- check Use SCT mounting accessory (FA / FB / CA / CB / LB).
- check Installation by qualified personnel per AirTAC docs.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X70X530S FAQ
This 4-position cylinder stops at 0 mm (fully retracted), 70 mm (first section extended), 530 mm (second section extended), and 600 mm (both sections extended). The positions are fixed by the two stroke lengths and are selected by pressurizing the appropriate cylinder ports.
Yes, it is designed to replace two individually mounted cylinders that were sequenced to achieve two distinct stroke lengths. The replacement must be an AirTAC SCT with an 80 mm bore, 70 mm and 530 mm strokes, PT ports, and the -S magnet option to maintain sensor compatibility.
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