Airtac AIRTAC SC125-160 Standard Cylinder SC125X620
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X620 is a genuine double-acting standard air cylinder with a Ø125mm bore and 620mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ125 mm
- Stroke620 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 28 mm
About the Airtac AIRTAC SC125-160 Standard Cylinder SC125X620
The SC125X620 is a heavy-duty double-acting pneumatic cylinder delivering 6136 N of push force at a standard 0.5 MPa supply, scaling up to a formidable 11045 N at 0.9 MPa. With a 125 mm bore and a 620 mm stroke, it is built for applications that demand high force over a substantial working distance.
This tie-rod cylinder features a robust 32 mm piston rod with an M27x2 thread and an adjustable air cushion length of 28 mm to decelerate end-of-stroke impact. The body length A is 203 mm, making the total extended length approximately 823 mm. As a genuine AirTAC ISO 6430 class cylinder, it is rated for speeds of 30-500 mm/s.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X620 Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X620 |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 620 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 SC125X620
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×620 | 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 SC125X620 Is Used
Agricultural Machinery
Provides the high force and long stroke needed for lifting and tilting heavy implements on harvesters or sprayers, operating reliably in dusty conditions with standard TPU seals.
Heavy Press Feed
Moves large sheet metal blanks or heavy tooling into a stamping press, using the 6136 N push force at 0.5 MPa to overcome inertia and maintain a steady feed rate.
Dam Gate Actuation
Operates a sluice or penstock gate with the 620 mm stroke, providing the sustained push or pull force required to control water flow against significant head pressure.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X620 the Right Cylinder?
The SC125X620 suits tasks where a 100 mm bore cylinder (3927 N at 0.5 MPa) is undersized, but a 160 mm bore (10053 N) would be excessive. For this 620 mm stroke, ensure the rod is protected from side loads; an external guide or linear rail is recommended to prevent bending stress on the 32 mm rod and premature bearing wear.
When replacing an existing cylinder, match five points exactly: 125 mm bore, 620 mm stroke, PT port thread, basic (no bracket) mounting, and no magnet. This ensures a direct dimensional and performance swap for another AirTAC SC125 tie-rod unit.
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 SC125X620 FAQ
At 0.5 MPa, the push force is 6136 N and the pull force is 5734 N. At the maximum operating pressure of 0.9 MPa, the push force reaches 11045 N. The theoretical maximum force at 1.0 MPa is 1251 kgf.
No. The SC125X620 is a double-acting cylinder and will not hold its position if air pressure is exhausted or lost. The piston can drift or the load may drop. For load holding, you must add an external mechanical lock, a rod brake, or a pilot-operated check valve in the circuit.
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