The AirTAC Airtac SC40 Standard Cylinder SC40X125SCB is a genuine double-acting standard air cylinder with a Ø40mm 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.
The SC40X125SCB is a 40 mm bore, 125 mm stroke double-acting pneumatic cylinder delivering 628 N of push force at 0.5 MPa (1130 N at 0.9 MPa). Its 16 mm diameter piston rod and 21 mm adjustable air cushion provide reliable deceleration for mid-range linear tasks.
This model includes a built-in magnet for CMSG/DMSG/EMSG position sensors and a rear double clevis (CB) mount, part F-SC40CB, allowing the cylinder to pivot on a fork at the cap end. The body length A is 142 mm, giving a total extended length of approximately 267 mm. Standard PT ports and TPU seals suit ambient temperatures from -20 to +70 °C.
| Model | Airtac SC40 Standard Cylinder SC40X125SCB |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 125 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. |
| ×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.
The 125 mm stroke and 628 N push force effectively divert cartons on a conveyor line. The rear clevis mount allows the cylinder to pivot as the gate swings, reducing rod side-load.
Delivers consistent clamping force for machining or assembly fixtures. The built-in magnet enables end-of-stroke sensing to confirm the clamp is fully engaged before a cycle starts.
Operates a discharge door on a small agricultural hopper. The rear clevis accommodates the door's arc of motion, and the 21 mm cushion absorbs impact at the end of the 125 mm travel.
Choose the SC40X125SCB when 628 N at 0.5 MPa meets your load requirement. If you need more force, stepping up to the 50 mm bore provides 982 N at the same pressure. For lighter, faster cycles, the 32 mm bore delivers 402 N.
To ensure a direct replacement, match five points: 40 mm bore, 125 mm stroke, PT port thread, rear double clevis (CB) mounting, and the built-in magnet (-S). This is a tie-rod cylinder, not an ISO 15552 profile, so dimensional interchangeability is limited to other AirTAC SC series units with identical specifications.
Quick checklist
At the standard 0.5 MPa operating pressure, the cylinder produces 628 N pushing and 528 N pulling. At the maximum operating pressure of 0.9 MPa, the push force increases to 1130 N. The theoretical maximum at 1.0 MPa is 128 kgf.
No. The AirTAC SC series is a tie-rod cylinder with a shorter body length than a standard ISO 15552 cylinder. It is not dimensionally interchangeable. It is a direct replacement only for another AirTAC SC40 cylinder with a 125 mm stroke, PT ports, CB rear clevis mount, and a magnet.
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