Airtac SC50 Standard Cylinder SC50X51
The AirTAC SC50 Standard Cylinder SC50X51 is a genuine double-acting standard air cylinder with a Ø50mm bore and 51mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ50 mm
- Stroke51 mm
- Port sizePT1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SC50 Standard Cylinder SC50X51
The SC50X51 is a non-standard stroke double-acting pneumatic cylinder from the AirTAC SC tie-rod series, combining a 50 mm bore with a precise 51 mm stroke. At 0.5 MPa air pressure it generates 982 N of push force and 825 N on the pull stroke, driven through a rigid 20 mm diameter piston rod with M16x1.5 male threads.
This model features the SC family's adjustable air cushion (21 mm cushion length) to decelerate the piston smoothly at end-of-travel, reducing impact noise and wear. The body length A is 150 mm, giving an approximate extended length of 201 mm. Standard PT1/4 ports and TPU seals with a -20 to +70 °C operating range are fitted, making it a reliable workhorse for short-throw clamping and positioning tasks.
Airtac SC50 Standard Cylinder SC50X51 Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X51 |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 51 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 SC50X51
| SC | Standard tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×51 | 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 SC50X51 Is Used
Short-Stroke Clamping
The 51 mm stroke and 982 N force at 0.5 MPa suit compact pneumatic clamps and holding fixtures on woodworking or welding jigs.
Part Ejection
Delivers a quick, controlled push to eject small to medium parts from injection molds or stamping dies, where a standard 50 mm stroke is slightly too short.
Diverter Gate Actuation
Operates a short-throw diverter or sorting gate on a conveyor line, providing positive actuation with the adjustable cushion softening the end-of-stroke impact.
Is the Airtac SC50 Standard Cylinder SC50X51 the Right Cylinder?
Choose the SC50 bore when your application needs roughly 1000 N of force at standard plant pressure; for lighter duty, the SC40 delivers 628 N at 0.5 MPa, while stepping up to an SC63 provides 1559 N. This 51 mm stroke is non-standard, so verify lead time against the nearest standard strokes of 50 mm or 75 mm.
When replacing an existing cylinder, match five points: 50 mm bore, 51 mm stroke, PT1/4 port thread, basic (no bracket) mounting, and the absence of a magnet. If the rod is subjected to side loads, add an external linear guide—the 20 mm rod is designed for axial thrust, not bending.
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 SC50X51 FAQ
At 0.5 MPa (5 bar), the push force is 982 N and the pull force is 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.
Only if the extra 1 mm of stroke does not interfere with your tooling or end-stops. Mechanically, the SC50X51 shares the same 50 mm bore, 20 mm rod, M16x1.5 rod thread, and PT1/4 ports as the SC50X50. Always verify the extended length (approx. 201 mm) fits your envelope.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SC50 Standard Cylinder SC50X51
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.