
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X15 is a genuine double-acting standard air cylinder with a Ø125mm bore and 15mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The SC125X15 is a compact-stroke member of the AirTAC SC tie-rod cylinder family, pairing a 125 mm bore with a short 15 mm stroke. At 0.5 MPa it generates 6136 N of push force (5734 N pull), making it suitable for clamping, ejecting, or positioning tasks where a high-force nudge is needed in a limited linear envelope.
This double-acting cylinder uses a 32 mm diameter piston rod with an M27x2 knuckle thread and PT1/2 ports. The body length A is 203 mm, giving a total extended length of approximately 218 mm. An adjustable air cushion (28 mm length) decelerates the piston at end-of-stroke to soften impact. Operating pressure is 0.15-1.0 MPa with a speed range of 30-500 mm/s for this ISO 6430 class bore.
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X15 |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 15 mm |
| Acting type | Double acting |
| Port size | PT1/2 |
| Rod thread | M27×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 28 mm |
| Max stroke | Up to 1500 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 | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (approx.) | 1251 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. |
|---|---|
| 125 | Bore size in mm. |
| ×15 | 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 15 mm stroke with 6136 N push force at 0.5 MPa securely locks workpieces in CNC fixtures and welding jigs.
Delivers a powerful, brief punch to eject formed parts from press tools or moulds without occupying excessive machine depth.
Quickly shifts heavy diverter gates or flippers on wide conveyor lines, handling the inertia of large packages.
For applications needing slightly less force in a smaller footprint, step down to the 100 mm bore (3927 N at 0.5 MPa). If the 15 mm stroke is too short, the SC125 supports standard strokes up to 1500 mm. Because the stroke is very short, side-loading is rarely a concern here, but always centre the load on the rod axis.
When replacing an existing cylinder, match five points: 125 mm bore, 15 mm stroke, PT1/2 port thread, basic mount (no factory bracket), and confirm whether a magnet is required. This model has no built-in magnet, so external sensors need a separate mounting band if position feedback is needed.
Quick checklist
At 0.7 MPa supply pressure the SC125X15 produces 8590 N of push force and 5734 N of pull force, based on the official AirTAC thrust table for the 125 mm bore.
This basic model ships without a mounting bracket. You can order the centre trunnion kit separately (part code F-SC125TC, which includes the TCM1 bracket) and attach it to the tie rods, or specify the factory-assembled SC125X15TC variant.
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