The AirTAC Airtac SC40 Standard Cylinder SC40X70LB is a genuine double-acting standard air cylinder with a Ø40mm 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 SC40X70LB is a double-acting pneumatic cylinder delivering 628 N of push force at 0.5 MPa (879 N at 0.7 MPa). Its 70 mm stroke suits compact clamping, pressing, and lifting tasks where a short, rigid linear motion is required.
This model comes fitted with an LB foot mount (F-SC40LB) for secure surface mounting. The 16 mm diameter piston rod and PT1/4 ports ensure reliable air flow, while the adjustable air cushion at each end decelerates the piston smoothly across the 21 mm cushion length.
| Model | Airtac SC40 Standard Cylinder SC40X70LB |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 70 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. |
| ×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 70 mm stroke and foot mounting provide a stable base for stopping or diverting light packages on conveyor lines, with 628 N force at standard shop air.
Apply controlled clamping force in machining or welding fixtures. The adjustable cushion protects tooling from impact damage at the end of the short, rapid stroke.
Use the SC40X70LB in scissor-lift or tilt mechanisms for bins and totes. The foot mount simplifies bolting to a frame, and the 16 mm rod resists bending under axial loads.
For higher force in the same footprint, the 50 mm bore SC50 series provides 982 N at 0.5 MPa. If space is constrained, stepping down to the 32 mm bore (402 N) is an option. When replacing an existing cylinder, match five points: 40 mm bore, 70 mm stroke, PT1/4 port thread, LB foot mounting, and the absence of a magnet sensor option.
Quick checklist
At 0.5 MPa, the push force is 628 N and the pull force is 528 N. At 0.7 MPa, push force increases to 879 N. The maximum theoretical force at 1.0 MPa is 128 kgf.
The LB foot mount (F-SC40LB) is pre-assembled on this model. If you need a different mounting style, the basic SC40X70 model without a mount is available, and you can order alternative accessories like FA flange or CA clevis mounts separately.
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