The AirTAC Airtac SC40 Standard Cylinder SC40X50-LB 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 SC40X50-LB is a double-acting tie-rod cylinder delivering 628 N of push force at 0.5 MPa, making it a compact workhorse for short linear moves. This model includes the LB foot mount for rigid surface mounting, with a 16 mm diameter piston rod and PT1/4 ports.
With a 50 mm stroke and a body length A of 142 mm, the total extended length reaches approximately 192 mm. The adjustable pneumatic cushion at each end absorbs impact energy over 21 mm, protecting end caps during high-cycle operation.
| Model | Airtac SC40 Standard Cylinder SC40X50-LB |
|---|---|
| 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.
Provides a clean 50 mm stroke to halt or divert small packages on a conveyor line, with the LB mount bolting directly to the side frame.
Applies 628 N of clamping force at standard shop air, ideal for holding small workpieces during drilling or light assembly processes.
Short-stroke ejection of light stamped parts, where the adjustable cushion reduces noise and vibration at the end of the extend stroke.
For applications needing more force, stepping up to the 50 mm bore provides 982 N of push force at the same 0.5 MPa pressure. The LB foot mount (F-SC40LB) secures the cylinder body directly to a machine frame or base plate. When replacing an existing unit, match the 40 mm bore, 50 mm stroke, PT1/4 port thread, LB foot mounting, and ensure the magnet option (-S) matches if sensors are used.
Quick checklist
At the standard operating pressure of 0.5 MPa, the push force is 628 N. At the maximum operating pressure of 0.9 MPa, the push force increases to 1130 N.
The LB suffix denotes a rigid foot mount, which is designed for fixed, non-pivoting installations. For pivoting, you would need a rear clevis (CA or CB) or a centre trunnion (TC) mount. The mounting must be ordered with the cylinder or the correct accessory code.
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