Airtac SC50 Standard Cylinder SC50X20TC
The AirTAC Airtac SC50 Standard Cylinder SC50X20TC is a genuine double-acting standard air cylinder with a Ø50mm bore and 20mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ50 mm
- Stroke20 mm
- Port sizePT1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SC50 Standard Cylinder SC50X20TC
The AirTAC SC50X20TC is a double-acting tie-rod cylinder with a 50 mm bore and a short 20 mm stroke, factory-assembled with a centre trunnion (TC) mount for pivoting applications. At 0.5 MPa it provides 982 N of push force and 825 N of pull force, rising to 1767 N push at the 0.9 MPa maximum operating pressure.
This model features a 20 mm diameter piston rod with an M16x1.5 male thread and PT1/4 port connections. The adjustable air cushion at each end (21 mm length) decelerates the piston smoothly, and the total body length A is 150 mm. The TC mount ships with the TCM1 trunnion bracket (accessory code F-SC50TC), allowing the cylinder to swing through an arc as the rod extends and retracts.
Airtac SC50 Standard Cylinder SC50X20TC Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X20TC |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 20 mm |
| Acting type | Double acting |
| 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 | Up to 1200 mm |
Specifications follow the official AirTAC SC series datasheet. Operating pressure 0.15–1.0 MPa, proof pressure 1.5 MPa, temperature −20 to +70 °C. Confirm against the product label before installation. Thread options: PT (standard) / G.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (approx.) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SC50 Standard Cylinder SC50X20TC
| SC | Standard tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×20 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related variants: SCD (double rod), SCJ (adjustable stroke), SCT (multi-position). Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
Where the Airtac SC50 Standard Cylinder SC50X20TC Is Used
Clamping & Fixturing
The short 20 mm stroke and 982 N force at 0.5 MPa make this cylinder ideal for pneumatic clamps and workholding fixtures where a quick, repeatable linear motion secures parts during machining or assembly.
Part Diverting
With the centre trunnion mount, the SC50X20TC can pivot to divert small packages or components on a conveyor line. The 20 mm stroke provides a fast, decisive push-off motion.
Welding Positioners
The trunnion-mounted body allows the cylinder to float angularly, making it suitable for actuating welding jig clamps or positioning arms that must follow a slight arc during operation.
Is the Airtac SC50 Standard Cylinder SC50X20TC the Right Cylinder?
Choose the SC50 bore when your application needs roughly 1000 N of push force at standard plant air pressure. If you require more force, step up to the SC63 bore which delivers 1559 N at 0.5 MPa; for a lighter, more compact solution the SC40 bore provides 628 N. The 20 mm stroke is ideal for clamping, ejecting, or short-travel diverting tasks.
For a drop-in replacement, match five attributes: 50 mm bore, 20 mm stroke, PT1/4 port thread, centre trunnion (TC) mounting, and the absence of a magnet. This cylinder is not dimensionally interchangeable with ISO 15552 profiles—it is a tie-rod design and is shorter overall.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SC50 Standard Cylinder SC50X20TC FAQ
At 0.5 MPa (approx. 73 psi) the cylinder produces 982 N pushing and 825 N pulling. At the maximum operating pressure of 0.9 MPa, the push force increases to 1767 N. The theoretical maximum at 1.0 MPa is 200 kgf.
No. The SC series is a tie-rod cylinder and is shorter in overall length than an ISO 15552 profile cylinder of the same bore and stroke. It will only directly replace another AirTAC SC tie-rod cylinder with matching bore, stroke, port thread, and TC centre trunnion mount.
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