Airtac SC100 Standard Cylinder SC100X638S
The AirTAC Airtac SC100 Standard Cylinder SC100X638S is a genuine double-acting standard air cylinder with a Ø100mm bore and 638mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ100 mm
- Stroke638 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SC100 Standard Cylinder SC100X638S
The AirTAC SC100X638S is a double-acting tie-rod cylinder with a 100 mm bore and a 638 mm stroke, factory-equipped with a built-in magnet (-S suffix) so CMSG/DMSG/EMSG solid-state or reed sensors clamp directly onto the barrel for rod-position feedback. At 0.5 MPa it generates 3927 N pushing force and 3681 N pulling force; at the maximum operating pressure of 0.9 MPa, thrust rises to 7068 N, placing this actuator in an 801-kgf force class at the theoretical 1.0 MPa limit.
This model uses a 25 mm diameter piston rod with an M20x1.5 rod thread and PT1/2 port threads. The body length A is 188 mm, giving a total extended length of approximately 826 mm. The adjustable air cushion (29 mm cushion length) decelerates the piston near stroke end to reduce impact, but it does not lock or hold the load — if position holding is required without live air pressure, an external rod brake or pilot-operated check valve must be added.
Airtac SC100 Standard Cylinder SC100X638S Technical Specifications
| Model | Airtac SC100 Standard Cylinder SC100X638S |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke | 638 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.
Theoretical Output Force (Ø100mm)
| 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.
Model Code: Airtac SC100 Standard Cylinder SC100X638S
| SC | Standard tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×638 | 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.
Where the Airtac SC100 Standard Cylinder SC100X638S Is Used
Belt-Tensioning & Roller Positioning
The 638 mm stroke and 3927 N push force at 0.5 MPa suit heavy belt-tensioning stations on aggregate conveyors or paper-machine rollers, where the built-in magnet lets sensors confirm full extension and retraction.
Large Panel Press & Clamping
Delivers up to 7068 N at 0.9 MPa for pressing plywood panels, MDF boards, or composite layups. The adjustable cushion protects the tooling and cylinder at the end of the 638 mm travel.
Palletizer Layer Pusher
Pushes full layers of cases or sacks onto a pallet with consistent force. The -S magnet option enables mid-stroke deceleration sensing via CMSG/DMSG switches for smooth, repeatable layer transfer.
Is the Airtac SC100 Standard Cylinder SC100X638S the Right Cylinder?
Choose the SC100 bore when your application needs roughly 4000 N of push force at standard plant pressure; if you can work with around 2500 N, stepping down to an 80 mm bore (2513 N at 0.5 MPa) saves air consumption and physical space. For strokes of 300 mm and above, like this 638 mm unit, always check side-load conditions — a long unsupported 25 mm rod can bend under lateral force. Use an external guide rail or a guided-cylinder assembly to protect the rod bearing and seal.
When replacing an existing cylinder, match five points exactly: 100 mm bore, 638 mm stroke, PT1/2 port thread, the built-in magnet (-S) for sensor mounting, and the basic (no-bracket) mounting style. The SC series is a tie-rod design and is shorter than an ISO 15552 cylinder, so it will not drop into an ISO 15552 footprint — only replace with another AirTAC SC100 of the same configuration.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SC100 Standard Cylinder SC100X638S FAQ
At 0.5 MPa (5 bar) the cylinder produces 3927 N pushing force and 3681 N pulling force. At 0.7 MPa it reaches 5497 N push, and at the maximum operating pressure of 0.9 MPa it delivers 7068 N push. The theoretical maximum at 1.0 MPa is 801 kgf.
No. The AirTAC SC series is a tie-rod cylinder and is physically shorter than an ISO 15552 profile cylinder, so the mounting dimensions and body length A (188 mm) are different. Only replace with another AirTAC SC100 cylinder matching the same bore, stroke, PT1/2 ports, basic mounting, and -S magnet option.
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