Airtac SC50 Standard Cylinder SC50X1550STC
The AirTAC Airtac SC50 Standard Cylinder SC50X1550STC is a genuine double-acting standard air cylinder with a Ø50mm bore and 1550mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ50 mm
- Stroke1550 mm
- Port sizePT1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SC50 Standard Cylinder SC50X1550STC
The AirTAC SC50X1550STC is a double-acting single-rod pneumatic cylinder with a 50 mm bore and an extended 1550 mm non-standard stroke, delivering 982 N of push force at 0.5 MPa (1767 N at 0.9 MPa). This model includes a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors and a centre trunnion (TC) mount with the TCM1 bracket, ideal for pivoting applications.
Designed with a 20 mm diameter rod (M16x1.5 thread) and 21 mm adjustable air cushion, the SC50X1550STC provides smooth deceleration at end-of-stroke. Its PT1/4 ports and tie-rod construction offer a compact alternative to ISO 15552 profiles, with a body length A of 150 mm. The 1550 mm stroke exceeds the standard 1200 mm maximum for bore 50, making this a made-to-order configuration for long-reach tasks.
Airtac SC50 Standard Cylinder SC50X1550STC Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X1550STC |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 1550 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 SC50X1550STC
| SC | Standard tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×1550 | 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 SC50X1550STC Is Used
Long-Reach Material Transfer
The 1550 mm stroke pushes or pulls parts across wide conveyor gaps or between distant stations, with the trunnion mount allowing the cylinder body to pivot as it cycles.
Automated Welding Fixtures
Positions welding torches or clamps over a large work envelope. The built-in magnet enables end-of-stroke sensing to confirm clamp closure before the weld cycle starts.
Diverter Gates on Long Chutes
Operates a pivoting diverter gate to sort packages. The centre trunnion mount supports the swinging motion, while the adjustable cushion absorbs impact at the 1550 mm extension.
Is the Airtac SC50 Standard Cylinder SC50X1550STC the Right Cylinder?
Choose the SC50 when your application requires roughly 982 N of force at standard plant pressure; stepping up to a 63 mm bore provides 1559 N, while a 40 mm bore delivers 628 N. For this 1550 mm stroke, the rod is exceptionally long relative to its 20 mm diameter—side loading must be strictly avoided. Always use an external linear guide or a guided cylinder assembly to prevent rod bending and premature bearing wear.
To replace an existing cylinder, match five key points: 50 mm bore, 1550 mm stroke, PT1/4 port thread, centre trunnion (TC) mounting with the F-SC50TC bracket, and the built-in magnet (-S) for sensor compatibility. This tie-rod SC series is not dimensionally interchangeable with ISO 15552 cylinders.
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 SC50X1550STC FAQ
At 0.5 MPa the cylinder pushes with 982 N and pulls with 825 N. At the maximum operating pressure of 0.9 MPa, push force reaches 1767 N. The theoretical maximum at 1.0 MPa is 200 kgf.
A 20 mm rod extended to 1550 mm is vulnerable to buckling and side-load deflection. Mount the load on an external linear guide rail and connect the rod via a floating joint. Never allow the cylinder rod to carry the full side load directly.
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