The AirTAC Airtac SC40 Standard Cylinder SC40X50LB is a genuine double-acting standard air cylinder with a Ø40mm bore and 50mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The SC40X50LB is a double-acting pneumatic cylinder delivering 628 N of push force at 0.5 MPa and up to 1130 N at the maximum operating pressure of 0.9 MPa. With a 50 mm stroke and a 16 mm diameter piston rod, it is built for short, linear push-pull tasks where compact tie-rod construction is valued.
This model includes the factory-fitted LB foot mount (accessory F-SC40LB), which provides stable axial surface mounting directly on the barrel. The cylinder uses a PT1/4 port, adjustable air cushioning at both ends, and TPU seals for a standard operating range of -20 to +70 °C.
| Model | Airtac SC40 Standard Cylinder SC40X50LB |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 mm |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod thread | M12×1.25 |
| 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 | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (approx.) | 128 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. |
|---|---|
| 40 | Bore size in mm. |
| ×50 | 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.
Short 50 mm stroke and 628 N push force reliably stop or divert small packages on conveyor lines.
Delivers consistent clamping force for jigs and fixtures in machining or assembly cells.
Operates small sliding gates or hopper doors on agricultural dosing and sorting equipment.
Choose the SC40 bore when your application requires roughly 628 N of force at standard plant pressure. If you need more force, stepping up to the SC50 bore provides 982 N at the same 0.5 MPa, while the SC32 bore offers 402 N for lighter, more compact installations. Always match the bore, stroke, port thread, and mounting accessory when replacing an existing cylinder.
The 50 mm stroke is well within the standard range, so this model is readily available. The LB foot mount suits straightforward linear actuation; for pivoting loads, consider a rear clevis (CA/CB) or centre trunnion (TC) mount instead.
Quick checklist
At 0.7 MPa the SC40 bore generates 879 N of push force. The pull force at the same pressure is 528 N, reflecting the area reduction from the 16 mm piston rod.
Yes, provided the original is a tie-rod cylinder matching 40 mm bore, 50 mm stroke, PT1/4 port, and foot (LB) mounting. The SC is not dimensionally interchangeable with ISO 15552 profile cylinders, so verify the body length (A=142 mm) and mounting footprint against your existing setup.
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