Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X85X15S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X85X15S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 85mm and 15mm give 4 controllable stop positions across a 100mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 185 mm
- Stroke 215 mm
- Total travel100 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X85X15S
The SCT40X85X15S is a tandem multi-position cylinder that delivers four fixed rod positions from two independent piston sections on a single axis. With strokes of 85 mm and 15 mm, the reachable stops are 0 mm (fully retracted), 15 mm, 85 mm, and the total travel of 100 mm. Each 40 mm bore section provides 628 N of push force at 0.5 MPa, driven by a 16 mm diameter rod.
This model includes a built-in magnet, allowing CMSG, DMSG, or EMSG sensors to be clamped directly onto the tie-rod barrel for non-contact position sensing. The cylinder uses PT1/4 ports, adjustable pneumatic cushioning with a 21 mm cushion length, and operates on standard filtered air from 0.15 to 1.0 MPa. The TPU seals suit ambient temperatures from -20 to +70 °C.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X85X15S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X85X15S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 85 / 15 mm |
| Total travel | 100 mm |
| Stop positions | 4 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 (4)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 85 mm |
| P2 (section 2) | 15 mm |
| P3 (both extended) | 100 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 SCT40X85X15S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×85 | Stroke 1 (section 1) in mm. |
| ×15 | 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 SCT40X85X15S Is Used
Two-Stage Sorting Gate
Use the 15 mm stroke to nudge items onto a secondary lane and the 85 mm stroke to fully divert them to a reject chute, all from one compact actuator.
Multi-Depth Labeling
Apply labels at two distinct heights on a product. The short 15 mm stroke handles a shallow recess, while the 85 mm stroke reaches a deeper panel.
Dual-Pressure Assembly Press
Program a light 15 mm pre-press to align parts, then engage the full 100 mm travel for final insertion, using the discrete mechanical stops for repeatability.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X85X15S the Right Cylinder?
Choose the SCT when your application needs two or more hard stops without the complexity of external shock absorbers or two separate cylinders. This 40 mm bore model is a compact solution for moderate thrust tasks; if you require higher force, stepping up to the 50 mm bore provides 982 N of push per section at 0.5 MPa. The SCT40X85X15S is a direct replacement only for another AirTAC SCT with a 40 mm bore, 85 mm and 15 mm section strokes, PT ports, and a built-in magnet. Since the longer stroke is under 300 mm, rod guiding is generally not required for axial loads.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 85 + 15 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 SCT40X85X15S FAQ
It provides four discrete mechanical stops: 0 mm (fully retracted), 15 mm, 85 mm, and the total combined stroke of 100 mm. The positions are selected by pressurizing the front section, the rear section, or both simultaneously.
Yes, in many cases it can. By combining two strokes on one common rod, the SCT40X85X15S eliminates the need to synchronize two separate actuators. It is a direct form-fit replacement only for an identical AirTAC SCT model with matching bore, both stroke lengths, PT ports, and the -S magnet option.
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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.
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Most inquiries answered within 7-8 hours.
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