Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X25X225S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X25X225S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 25mm and 225mm give 4 controllable stop positions across a 250mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 125 mm
- Stroke 2225 mm
- Total travel250 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X25X225S
The AirTAC SCT50X25X225S is a double-acting multi-position tandem cylinder that provides four fixed rod positions: fully retracted (0 mm), 25 mm, 225 mm, and the total extended travel of 250 mm. Each piston section delivers a push force of 982 N at 0.5 MPa, rising to 1767 N at 0.9 MPa, making it suitable for tasks requiring two distinct intermediate stops without needing two separate actuators.
This 50 mm bore model features a 20 mm diameter piston rod, M16x1.5 rod thread, and PT1/4 ports. The built-in magnet (denoted by the -S suffix) allows direct mounting of CMSG, DMSG, or EMSG sensors along the tie-rod barrel for non-contact position sensing. With a body length of 243 mm and a 21 mm adjustable air cushion, it provides reliable end-of-stroke deceleration.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X25X225S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X25X225S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 25 / 225 mm |
| Total travel | 250 mm |
| Stop positions | 4 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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, 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 (4)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 25 mm |
| P2 (section 2) | 225 mm |
| P3 (both extended) | 250 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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 SCT50X25X225S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×25 | Stroke 1 (section 1) in mm. |
| ×225 | 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 SCT50X25X225S Is Used
Two-Stage Sorting Gate
Use the 25 mm stroke to open a partial gate for small items and the full 250 mm stroke for large items on a conveyor line, with sensor feedback from the built-in magnet confirming each position.
Multi-Depth Pressing
Actuate the first section for a 25 mm pre-press or light contact, then engage the second section to reach the full 250 mm travel for the main pressing operation, all with one cylinder body.
Sequential Part Feeding
Control a feeder mechanism to advance parts by a short 25 mm pitch or a longer 225 mm pitch, using the four discrete rod positions to reliably index different component lengths.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X25X225S the Right Cylinder?
Select the SCT50X25X225S when your application needs a compact, single-cylinder solution to hit two different mid-stroke positions, specifically 25 mm and 225 mm, eliminating the complexity of aligning two separate cylinders and their valving. If the 982 N push force per section at 0.5 MPa is insufficient, consider stepping up to a 63 mm bore SCT, which provides 1559 N of push force per section at the same pressure. For a direct replacement, match the 50 mm bore, both the 25 mm and 225 mm strokes, PT port thread, and the integrated magnet. Since the combined stroke reaches 250 mm, ensure the load is guided if side forces are present to prevent rod bending.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 25 + 225 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 SCT50X25X225S FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 25 mm (first section extended), 225 mm (second section extended), and 250 mm (both sections extended). The stops are fixed by the two stroke lengths and are not infinitely adjustable.
The force is generated per actuated piston section. One section provides a push force of 982 N at 0.5 MPa. The cylinder does not combine or double the force when both sections are pressurized; each section independently contributes its rated force to move the rod to its designated stop.
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