
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X70TC is a genuine double-acting standard air cylinder with a Ø125mm bore and 70mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The SC125X70TC is a double-acting pneumatic cylinder delivering 6136 N of push force and 5734 N of pull force at 0.5 MPa, rising to 11045 N at the maximum operating pressure of 0.9 MPa. With a 125 mm bore and a 70 mm stroke, this model is configured with a centre trunnion mount (TC) for applications requiring the cylinder body to pivot during operation.
This ISO 6430 class tie-rod cylinder features a 32 mm piston rod with an M27x2 thread and a 28 mm adjustable air cushion at each end to decelerate the piston smoothly. The body length A is 203 mm, resulting in a compact extended length of approximately 273 mm. Operating on filtered air from 0.15 to 1.0 MPa, its speed range is 30-500 mm/s, and the standard PT1/2 port and TPU seals suit ambient temperatures from -20 to +70 °C.
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X70TC |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 70 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.
| 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.
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×70 | 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 11045 N force at 0.9 MPa provides ample power for heavy-duty pneumatic clamping, stamping, or press-fit assembly operations where a pivoting cylinder body simplifies fixture design.
The TC centre trunnion mount allows the cylinder to pivot as it extends, making it a direct fit for driving bin tippers, chute gates, or dump mechanisms on conveyors and process equipment.
With a robust 32 mm rod and tie-rod construction, this cylinder withstands harsh environments in farm machinery, controlling hopper doors, flow diverters, or linkage adjustments with reliable pneumatic power.
For a step down in force, the SC100 bore provides 3927 N push at 0.5 MPa, while stepping up to the SC160 bore yields 10053 N. This TC variant ships with the F-SC125TC centre trunnion bracket and TCM1, allowing the cylinder to swing in a single plane—ideal for articulating mechanisms. The 70 mm stroke is well within the 1500 mm maximum standard stroke for this bore.
When replacing an existing cylinder, match five key points: 125 mm bore, 70 mm stroke, PT1/2 port thread, the TC centre trunnion mounting configuration, and the absence of a built-in magnet. This ensures a direct dimensional and functional interchange with another AirTAC SC125 tie-rod cylinder.
Quick checklist
At 0.5 MPa (approximately 72.5 psi), the cylinder produces 6136 N pushing force and 5734 N pulling force. At the maximum operating pressure of 0.9 MPa, the push force increases to 11045 N. The theoretical maximum at 1.0 MPa is 1251 kgf.
Not directly. The TC suffix means the cylinder body is designed to pivot on a centre trunnion bracket (F-SC125TC with TCM1). Replacing it with a foot-mounted (LB) or basic cylinder would change the mounting geometry and load path, potentially causing binding. You must match the TC mounting type for a drop-in replacement.
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