
The AirTAC Airtac SC100 Standard Cylinder SC100X688S is a genuine double-acting standard air cylinder with a Ø100mm bore and 688mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The AirTAC SC100X688S is a double-acting tie-rod cylinder delivering 3927 N of push force at 0.5 MPa (7068 N at 0.9 MPa). Its 100 mm bore and 688 mm stroke suit medium-to-long linear moves in clamping, pressing, and material-transfer stations. The built-in magnet allows CMSG/DMSG/EMSG sensors to clamp directly onto the barrel for contactless position feedback.
This model uses a 25 mm diameter piston rod with M20x1.5 male threads and PT1/2 ports. The adjustable air cushion (29 mm length) decelerates the piston at end-of-stroke to reduce impact. The body length A is 188 mm, giving an approximate extended length of 876 mm. Operating pressure is 0.15-1.0 MPa with a speed range of 30-800 mm/s.
| Model | Airtac SC100 Standard Cylinder SC100X688S |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke | 688 mm |
| Acting type | Double acting |
| Port size | PT1/2 |
| Rod thread | M20×1.5 |
| 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, 29 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 | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (approx.) | 801 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. |
|---|---|
| 100 | Bore size in mm. |
| ×688 | 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 3927 N force at 0.5 MPa is ideal for pneumatic toggle clamps and weld fixtures. The 688 mm stroke provides deep reach into large assemblies, with sensor feedback confirming clamp engagement.
Deploy the SC100X688S as a heavy-duty pallet stop on conveyor lines. The 25 mm rod handles impact loads, while the built-in magnet signals the raised/lowered position to the line controller.
With 7068 N of thrust at 0.9 MPa, this cylinder ejects compacted material from balers or large waste compactors. The adjustable cushion softens the piston's return stroke under high inertial loads.
The SC100 provides 3927 N push at 0.5 MPa. If your application needs more force, step up to the SC125 (6136 N at 0.5 MPa); for a lighter, faster actuator, the SC80 offers 2513 N. At 688 mm stroke, the rod is extended significantly—evaluate side loads carefully. An external linear guide or self-guided tooling is recommended to protect the rod bearing from bending moments.
For a drop-in replacement, match five points: 100 mm bore, 688 mm stroke, PT1/2 ports, the built-in magnet (-S suffix), and the basic (no bracket) mounting style. This is a genuine AirTAC SC tie-rod cylinder, which is shorter than an ISO 15552 profile and not dimensionally interchangeable with that standard.
Quick checklist
At 0.5 MPa, push force is 3927 N and pull force is 3681 N. At the maximum operating pressure of 0.9 MPa, push force reaches 7068 N. The theoretical maximum at 1.0 MPa is 801 kgf.
No. The SC100X688S is a double-acting cylinder and will not hold position when air pressure is exhausted or the directional valve is centered. The adjustable air cushion only decelerates the piston—it is not a locking device. For load holding, add a pilot-operated check valve or an external rod brake.
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