Airtac AIRTAC SC125-160 Standard Cylinder SC125X1650S
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X1650S is a genuine double-acting standard air cylinder with a Ø125mm bore and 1650mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ125 mm
- Stroke1650 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 28 mm
About the Airtac AIRTAC SC125-160 Standard Cylinder SC125X1650S
The AirTAC SC125X1650-S is a large-bore double-acting tie-rod cylinder engineered for heavy linear force over an extended 1650 mm stroke. With a 125 mm piston, it delivers 6136 N of push force at 0.5 MPa and up to 11045 N at the maximum operating pressure of 0.9 MPa, placing it firmly in the ISO 6430 class for robust industrial actuation.
This model features a built-in magnet (denoted by the -S suffix), allowing direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors along the barrel for precise end-of-stroke or mid-stroke position feedback. The 32 mm diameter piston rod, M27x2 knuckle thread, and 28 mm adjustable air cushion manage the high inertial loads typical of a 1650 mm stroke, while the PT1/2 port supplies the necessary air flow.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X1650S Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X1650S |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 1650 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.
Theoretical Output Force (Ø125mm)
| 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.
Model Code: Airtac AIRTAC SC125-160 Standard Cylinder SC125X1650S
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×1650 | 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 AIRTAC SC125-160 Standard Cylinder SC125X1650S Is Used
Long-Stroke Material Pusher
The 1650 mm stroke and 11045 N push force at 0.9 MPa are ideal for cross-transfer conveyors that push heavy pallets or steel sheets across a wide roller bed.
Heavy-Duty Clamping & Forming
Delivers over a tonne of clamping force for large-scale welding jigs or press-forming tools, with the built-in magnet sensor confirming full closure on every cycle.
Industrial Gate & Damper Actuation
Operates large hopper gates or air dampers in bulk material handling, where the long stroke provides full gate travel and the adjustable cushion absorbs the high end-of-stroke impact.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X1650S the Right Cylinder?
Select the SC125X1650-S when your application demands a force class around 6136 N at standard plant pressure (0.5 MPa) and a stroke length beyond the standard 1500 mm maximum. If 3927 N at 0.5 MPa is sufficient, stepping down to the SC100 bore reduces physical size and air consumption. For strokes of this length, the piston rod is subject to significant bending moments under side load; an external guide rail or a guided cylinder is strongly recommended to protect the rod bearing and seals from premature wear.
For a direct replacement, match the 125 mm bore, 1650 mm stroke, PT1/2 port thread, and the integrated magnet (-S). This is a non-standard stroke model, so verify the overall extended length (body length A of 203 mm + 1650 mm stroke) and mounting footprint against your existing installation.
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 AIRTAC SC125-160 Standard Cylinder SC125X1650S FAQ
At 0.7 MPa operating pressure, the theoretical push force is 8590 N. The maximum push force at 0.9 MPa is 11045 N. Always apply a safety factor for real-world dynamic loads.
It is not recommended. A 1650 mm stroke with a 32 mm rod is highly susceptible to side-load bending. An external guide or a guided cylinder is essential to prevent rod buckling and premature bearing failure, especially when the load is not perfectly axial.
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