The AirTAC Airtac SC Standard Cylinders SC50X970ST is a genuine double-acting standard air cylinder with a Ø50mm bore and 970mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The AirTAC SC50X970ST is a double-acting tie-rod cylinder with NPT 1/4 in ports, the tapered imperial thread that seals on the thread flanks and is standard across North-American plumbing. This ST build pairs the built-in -S magnet with the NPT variant, so CMSG, DMSG or EMSG switches can be clamped anywhere along the 970 mm travel. At 0.5 MPa the piston pushes with about 982 N; open the regulator to 0.9 MPa and output rises to 1767 N. The 970 mm stroke sits well inside the bore-50 standard range of up to 1200 mm, so no made-to-order manufacturing is needed. A 20 mm rod runs on a 21 mm adjustable cushion, and the fully extended length is roughly 1120 mm (150 mm body A plus 970 mm stroke) - worth checking against your machine envelope before ordering.
| Model | Airtac SC Standard Cylinders SC50X970ST |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 970 mm |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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 | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (approx.) | 200 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. |
|---|---|
| 50 | Bore size in mm. |
| ×970 | 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.
Pushes a collated group of cartons off an infeed lane into a shrink wrapper or case. The 982 N push at 0.5 MPa easily slides stacked corrugated packs, and 970 mm of stroke clears a full lane width in one move.
Indexes aluminium or PVC extrusion lengths off a cooling run-out table at an extrusion plant. The long 970 mm stroke sweeps the whole table, while the 20 mm rod and 21 mm adjustable cushion soften the stop against the discharge stop.
Opens and closes a full-length sliding guard door on a CNC machining enclosure. The built-in -S magnet feeds a DMSG sensor for door-open/door-closed interlock feedback, and NPT 1/4 ports tie straight into a US-spec valve manifold.
Size in both directions: if 982 N at 0.5 MPa is more than you need, the SC40 gives 628 N at the same pressure with a 16 mm rod; if the load creeps toward 1500 N, step up to the SC63, which delivers 1559 N at 0.5 MPa on a 20 mm rod. With 970 mm of unsupported stroke, watch side load - a long thin rod bends under off-axis force, so add an external guide or a guided cylinder for anything but pure axial pushing. Because this is the NPT-port variant, match it to existing NPT fittings and manifolds rather than the standard PT (Rc) SC50; the two threads are not interchangeable despite both being tapered. For a like-for-like swap, match five points: bore, stroke, port thread (NPT), mounting accessory (F-SC50LB, FA, FB, CA, CB, TC, TCM1) and the magnet suffix.
Quick checklist
At 0.5 MPa it pushes with 982 N and pulls with 825 N. At 0.7 MPa push force is 1374 N, and at the 0.9 MPa maximum operating pressure it reaches 1767 N. The theoretical maximum at 1.0 MPa is about 200 kgf. All figures assume clean, dry air filtered to 40 um within the 0.15-1.0 MPa working range.
Not port-for-port. The SC50X970ST uses NPT 1/4 tapered ports that seal on the thread itself and suit North-American fittings and manifolds; the standard SC50 uses PT (Rc) tapered ports, and a G (BSPP) parallel variant that seals on a bonded washer also exists. Physically the cylinders match, so a swap is fine only if the plumbing standard is also changed or matched. Confirm the full five-point match - bore 50, stroke 970, NPT 1/4 thread, mounting accessory code and the -S magnet - against the outgoing cylinder before ordering.
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