The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X160-30STC is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 30 mm range without swapping the cylinder. Ø80mm bore, 160mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X160-30STC is an 80 mm bore double-acting, single-rod cylinder featuring a rear-cap adjusting screw that provides a 30 mm field-adjustable stroke range. This allows precise end-position tuning without swapping the cylinder. It delivers a robust 2513 N push and 2268 N pull at 0.5 MPa, and up to 4523 N push at the maximum operating pressure of 0.9 MPa, making it suitable for demanding linear applications.
This specific model is configured with a built-in magnet (S) for direct mounting of CMSG/DMSG/EMSG sensors, and a centre trunnion pivot (TC) for swinging loads. The trunnion is supplied with its TCM1 bracket. It uses a 25 mm diameter piston rod, PT3/8 ports, and a standard TPU seal for operation from -20 to +70 °C. The body length A(SCJ) is 239 mm.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X160-30STC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 160 mm |
| Stroke adjustment | Up to 30 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT3/8 |
| 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, 28 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SCJ (adjustable-stroke) datasheet. The rear adjusting screw sets the stroke end position; force is the same as the equivalent single-rod SC bore. Confirm against the product label before installation. Thread options: PT (standard) / G.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
SCJ is single-rod, so force matches the equivalent SC bore: push uses the full bore area, pull subtracts the rod area. Actual usable force is lower than theoretical due to friction and back-pressure; size with a safety margin.
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×160 | Nominal (maximum) stroke length in mm. |
| -30 | Adjustable-stroke range in mm (options 10/20/30/40/50/75/100). |
| -S | Optional built-in magnet for sensor position sensing. |
Related types: SC (single rod, fixed stroke), SCD (double rod), SCT (multi-position). SCJ mounting: Basic, FA, LB, TC, TCM1. Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
The 30 mm rear adjustment screw lets technicians dial in the exact stroke end-stop during machine setup, eliminating the need for external hard stops and speeding up commissioning of new automation cells.
Quickly adapt the cylinder's end position for different product sizes on packaging or sorting lines. The centre trunnion mount allows the cylinder body to pivot, ideal for actuating gates or diverters.
In high-cycle clamping or pressing fixtures, the adjustable stroke can be periodically advanced to compensate for tooling or pad wear, maintaining consistent clamping force without replacing the actuator.
Choose this 80 mm bore when your application needs more force than the 63 mm bore, which provides 1559 N push at 0.5 MPa. If you require a fixed, non-adjustable stroke, a standard SC80X160 cylinder is a more economical choice. For applications where the rod must not rotate, a guided cylinder is a better alternative. This SCJ80X160-30STC is a direct replacement for an identical AirTAC SCJ adjustable-stroke cylinder with an 80 mm bore, 160 mm nominal stroke, 30 mm adjust range, PT ports, centre trunnion (TC) mount, and a magnetic piston. For strokes of 300 mm or more, evaluate side-loading and rod bending; an external guide or guided cylinder is recommended to protect the rod bearings.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, the push force is 2513 N and the pull force is 2268 N. The force increases with pressure, reaching a maximum push of 4523 N at 0.9 MPa. The pull force is lower due to the area of the 25 mm piston rod.
The rear-cap adjusting screw sets the physical end-stop for the piston, shortening the stroke by up to 30 mm from the 160 mm nominal maximum. It is a mechanical stroke limiter, not a locking device. If the load must be held in position without air pressure, you must add an external rod lock or a pilot-operated check valve.
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