Airtac SC50 Standard Cylinder SC50X125CB
The AirTAC Airtac SC50 Standard Cylinder SC50X125CB is a genuine double-acting standard air cylinder with a Ø50mm bore and 125mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ50 mm
- Stroke125 mm
- Port sizePT1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SC50 Standard Cylinder SC50X125CB
The SC50X125CB is a double-acting pneumatic cylinder delivering 982 N of push force at 0.5 MPa, scaling to 1767 N at the 0.9 MPa maximum operating pressure. With a 125 mm stroke and a 20 mm diameter piston rod, it suits medium-force clamping, pressing, and positioning tasks where a pivoting rear mount is required.
This model features a rear double clevis (CB) mount, allowing the cylinder to pivot during operation to accommodate angular movement. The body length A is 150 mm, and the adjustable air cushion at each end is 21 mm, providing reliable end-of-stroke deceleration for smooth cycling.
Airtac SC50 Standard Cylinder SC50X125CB Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X125CB |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 125 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 SC50X125CB
| SC | Standard tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×125 | 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 SC50X125CB Is Used
Implement Positioning
Controls chute deflectors or linkage adjustments on agricultural machinery, where the rear clevis mount absorbs frame flex and misalignment.
Part Diverting
Actuates a pivoting diverter arm on a conveyor line, using the CB mount to swing the cylinder body as the arm moves between lanes.
Welding Fixture Clamping
Powers a pivoting clamp arm in a welding jig, holding parts securely with 982 N of force while the clevis allows the cylinder to follow the clamp's arc.
Is the Airtac SC50 Standard Cylinder SC50X125CB the Right Cylinder?
For higher force, step up to the 63 mm bore SC63 series, which provides 1559 N at 0.5 MPa. If space is tight and less force is acceptable, the 40 mm bore offers 628 N. This 125 mm stroke is well within the 1200 mm maximum standard stroke for the 50 mm bore. To ensure a correct replacement, match five points: 50 mm bore, 125 mm stroke, PT port thread, CB rear double clevis mounting (using accessory F-SC50CB), and the non-magnetic piston configuration.
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 SC50X125CB FAQ
At the standard 0.5 MPa operating pressure, push force is 982 N and 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.
Yes, if the original is a 50 mm bore, 125 mm stroke tie-rod cylinder with a rear double clevis. Verify the clevis pin diameter and width match the AirTAC CB mount, and confirm the port thread is PT 1/4. The CB mount allows the cylinder to pivot, so ensure the air connections use flexible hose to accommodate the movement.
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