Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X70X70S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X70X70S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 70mm and 70mm give 3 controllable stop positions across a 140mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 170 mm
- Stroke 270 mm
- Total travel140 mm
- Positions3 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X70X70S
The SCT40X70X70S is a double-acting multi-position tandem cylinder that delivers three fixed rod positions: fully retracted (0 mm), mid-stroke (70 mm), and full extension (140 mm). Each piston section generates 628 N of push force at 0.5 MPa, rising to 1130 N at 0.9 MPa, driven through a 16 mm diameter rod. The built-in magnet allows direct mounting of CMSG/DMSG/EMSG sensors for reliable end-of-stroke or mid-position detection.
With a compact body length of 235 mm plus strokes and a 21 mm air cushion at each end, this cylinder provides smooth deceleration without external shock absorbers. The PT1/4 ports and M12x1.25 rod thread integrate easily into standard pneumatic circuits. Operating on filtered air from 0.15 to 1.0 MPa, it suits sorting gates, two-depth pressing, or any application needing three repeatable mechanical stops from a single compact unit.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X70X70S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X70X70S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 70 / 70 mm |
| Total travel | 140 mm |
| Stop positions | 3 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/4 |
| Rod thread | M12×1.25 |
| 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, 21 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). Confirm against the product label before installation. Thread options: PT (standard) / G.
Stop Positions (3)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 70 mm |
| P2 (both extended) | 140 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 SCT32-63 Multi-Position Tandem Air Cylinder SCT40X70X70S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×70 | Stroke 1 (section 1) in mm. |
| ×70 | 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 SCT32-63 Multi-Position Tandem Air Cylinder SCT40X70X70S Is Used
3-Position Diverter Gate
Direct packages to three separate conveyor lanes using the retracted, mid, and fully extended positions. The 140 mm total travel provides ample stroke for lane switching in compact logistics hubs.
Two-Depth Pressing Station
Achieve a shallow pre-press at 70 mm and a full-depth press at 140 mm from a single tandem cylinder. The integrated magnet sensors confirm each depth before the next cycle step.
Multi-Stop Part Feeding
Advance components to two distinct workstations with one actuator. The fixed 70 mm and 140 mm stops eliminate the need for adjustable hard stops, improving repeatability in automated assembly.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X70X70S the Right Cylinder?
Choose the SCT tandem layout when you need up to three discrete mechanical stops without the complexity of two separate cylinders and external hard stops. For this 40 mm bore, the push force of 628 N at 0.5 MPa handles moderate transfer and diverting tasks; if your load exceeds this, stepping up to the 50 mm bore provides 982 N per section. When replacing an existing unit, match the 40 mm bore, both 70 mm section strokes, PT port thread, and the -S magnet option to ensure sensor compatibility.
Both strokes are well within the standard range, so lead times are short. If your application involves a long tooling plate or offset load, consider adding an external guide rod assembly to protect the 16 mm rod and internal bearings from side forces, even at this moderate stroke length.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 70 + 70 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 SCT32-63 Multi-Position Tandem Air Cylinder SCT40X70X70S FAQ
It provides three discrete mechanical stops: 0 mm (fully retracted), 70 mm (first section extended), and 140 mm (both sections extended). Because both strokes are equal at 70 mm, the mid and full-extension positions are evenly spaced.
Yes, in applications where you only need the three fixed stops (0, 70, 140 mm). The SCT40X70X70S uses a common rod line and body, saving space and eliminating the need to synchronize two separate actuators. Ensure the per-section force of 628 N at 0.5 MPa meets your load requirement at each position.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SCT Multi-Position Cylinders
Request a Quote for Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X70X70S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.