Airtac SC50 Standard Cylinder SC50X185STC
The AirTAC Airtac SC50 Standard Cylinder SC50X185STC is a genuine double-acting standard air cylinder with a Ø50mm bore and 185mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ50 mm
- Stroke185 mm
- Port sizePT1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SC50 Standard Cylinder SC50X185STC
The SC50X185STC is a double-acting pneumatic cylinder delivering 982 N of push force at 0.5 MPa (1374 N at 0.7 MPa). With a 50 mm bore and 185 mm stroke, this model features a 20 mm diameter piston rod and an adjustable air cushion of 21 mm to decelerate the piston smoothly at end-of-stroke.
This configuration includes a built-in magnet (-S suffix) for direct mounting of CMSG/DMSG/EMSG sensors, and a centre trunnion mount (TC suffix) supplied with the TCM1 bracket for pivoting applications. The body length A is 150 mm, making the total extended length approximately 335 mm. It uses standard PT ports (PT1/4) and TPU seals for operation from -20 to +70 °C.
Airtac SC50 Standard Cylinder SC50X185STC Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X185STC |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 185 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 SC50X185STC
| SC | Standard tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×185 | 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 SC50X185STC Is Used
Part Diverter Gates
The 982 N push force at 0.5 MPa reliably actuates diverter gates on packaging conveyors, while the centre trunnion mount allows the cylinder to pivot freely as the gate swings.
Clamping & Fixturing
Ideal for moderate-force workholding in CNC fixtures. The built-in magnet enables end-of-stroke sensing to confirm clamp engagement before a machining cycle starts.
Pivoting Linkage Drives
The TC centre trunnion mount, complete with TCM1 bracket, is purpose-built for driving pivoting linkages on process machinery, absorbing the arc motion without rod side-load.
Is the Airtac SC50 Standard Cylinder SC50X185STC the Right Cylinder?
For higher force requirements, consider stepping up to the 63 mm bore (1559 N at 0.5 MPa). If lower force and a lighter assembly are acceptable, the 40 mm bore (628 N at 0.5 MPa) is a compact alternative. The 185 mm stroke is within the 1200 mm maximum standard stroke for bore 50.
To ensure a direct replacement, match five key points: 50 mm bore, 185 mm stroke, PT port thread, centre trunnion (TC) mounting with the F-SC50TC bracket, and the built-in magnet (-S) for sensor compatibility. For strokes over 300 mm, always assess side-load conditions; external guides are recommended to protect the rod bearing from bending moments.
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 SC50X185STC FAQ
At the standard operating pressure of 0.5 MPa, the cylinder provides 982 N extending (push) and 825 N retracting (pull). At 0.7 MPa, the push force increases to 1374 N. The maximum theoretical force at 1.0 MPa is 200 kgf.
No. The AirTAC SC series is a tie-rod cylinder with a shorter body length than an ISO 15552 cylinder, so it is not dimensionally interchangeable. It is a direct replacement only for another AirTAC SC50 tie-rod cylinder with matching bore, stroke, PT ports, TC mount, and magnet.
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