The AirTAC Airtac SC50 Standard Cylinder SC50X70TC is a genuine double-acting standard air cylinder with a Ø50mm bore and 70mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The AirTAC SC50X70TC is a double-acting tie-rod cylinder with a 50 mm bore and 70 mm stroke, factory-equipped with a TC centre trunnion mount for pivoting applications. At 0.5 MPa air pressure it generates 982 N of push force and 825 N on the pull stroke, making it a capable mid-range actuator for moderate loads.
This model uses a 20 mm diameter piston rod with M16x1.5 male threads and PT1/4 port connections. The adjustable air cushion at each end is 21 mm long, helping to decelerate the piston smoothly. The trunnion bracket (TCM1) is included, allowing the cylinder to swing as the rod extends and retracts.
| Model | Airtac SC50 Standard Cylinder SC50X70TC |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 70 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.
| 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.
| SC | Standard tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×70 | 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.
The 982 N push force at 0.5 MPa is well-suited for pneumatic clamping units on machining centres, welding jigs, and assembly fixtures where the cylinder body needs to pivot slightly during engagement.
With the TC trunnion mount, this cylinder can pivot to operate a diverter gate on a conveyor line, sorting packages or components by size or destination using a 70 mm stroke.
Commonly used to open and close discharge chutes on agricultural hoppers or silos. The trunnion mounting allows the cylinder to follow the arc of the chute door, while the 21 mm cushion absorbs the end-of-stroke shock.
Choose the SC50 bore when your load requires roughly 980 N of push force at standard plant pressure. If you need more force, step up to the SC63 which provides 1559 N at the same 0.5 MPa; for a lighter, more compact solution the SC40 delivers 628 N. The TC centre trunnion mount is ideal when the cylinder body must pivot during the stroke—ensure the trunnion pins are aligned and the load is guided to prevent twisting the rod.
For replacement, match five points: 50 mm bore, 70 mm stroke, PT1/4 port thread, TC centre trunnion mounting (with TCM1 bracket), and the absence of a magnet. This is a tie-rod cylinder, not an ISO 15552 profile, so dimensional interchangeability is limited to another AirTAC SC50 or an equivalent tie-rod design.
Quick checklist
At the standard operating pressure of 0.5 MPa, the push force is 982 N and the pull force is 825 N. At the maximum operating pressure of 0.9 MPa, the push force reaches 1767 N. The theoretical maximum force at 1.0 MPa is 200 kgf.
Yes. The 'TC' suffix in SC50X70TC indicates a centre trunnion mount, and it ships with the TCM1 trunnion mounting bracket. The complete accessory part code is F-SC50TC. The trunnion allows the cylinder body to pivot, which is essential for applications where the load moves through an arc.
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