Airtac AIRTAC SC125-160 Standard Cylinder SC125X850
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X850 is a genuine double-acting standard air cylinder with a Ø125mm bore and 850mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ125 mm
- Stroke850 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 28 mm
About the Airtac AIRTAC SC125-160 Standard Cylinder SC125X850
The AirTAC SC125X850 is a double-acting tie-rod cylinder delivering 6136 N of push force at 0.5 MPa, rising to 11045 N at the maximum operating pressure of 0.9 MPa. With an 850 mm stroke and a 32 mm diameter piston rod, this model is built for linear applications that need substantial force over a mid-to-long travel distance. The cylinder body length A is 203 mm, giving a total extended length of approximately 1053 mm.
This ISO 6430 class cylinder uses PT1/2 ports and an M27x2 rod thread for robust mechanical connections. The adjustable air cushion at each end, with a 28 mm cushion length, decelerates the piston smoothly to reduce end-of-stroke impact. Operating on 30-500 mm/s filtered air from 0.15 to 1.0 MPa, the standard TPU seals provide a working temperature range of -20 to +70 °C.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X850 Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X850 |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 850 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 SC125X850
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×850 | 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 SC125X850 Is Used
Pallet Transfer
Pushes heavy pallets or skids across roller conveyors in distribution centres, using the 850 mm stroke to bridge transfer gaps with controlled force.
Agricultural Equipment Actuation
Operates chutes, gates, or hopper doors on farming machinery, where the 11045 N maximum force handles dense bulk materials reliably.
Heavy Component Clamping
Provides consistent, high-force clamping for welding fixtures or assembly jigs on large fabricated metal parts, maintaining pressure during the work cycle.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X850 the Right Cylinder?
Select the SC125 bore when your application requires between 5734 N (pull) and 6136 N (push) of force at 0.5 MPa. If your load is lighter, stepping down to the SC100 bore reduces push force to 3927 N at the same pressure. For higher force demands, the SC160 bore offers 10053 N push at 0.5 MPa. Always match the replacement cylinder exactly on bore, stroke, PT port thread, and mounting style.
For this 850 mm stroke, carefully evaluate side-loading conditions. A long, unsupported 32 mm rod can experience bending moments under lateral force. To protect the rod bearing and piston seals, use an external linear guide or switch to a guided cylinder unit if the load is not perfectly axial.
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 SC125X850 FAQ
At the standard 0.5 MPa operating pressure, 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 increases to 11045 N. The theoretical maximum force at 1.0 MPa is 1251 kgf.
No. The AirTAC SC series is a tie-rod cylinder with a shorter body length than an ISO 15552 profile cylinder, so it is not dimensionally interchangeable. For a direct drop-in replacement, you must use another AirTAC SC125 tie-rod cylinder with the same 850 mm stroke, PT1/2 ports, and matching mounting accessories.
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