The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X100-30STC 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, 100mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X100-30STC delivers a robust 2513 N of push force at 0.5 MPa, making it a powerful choice for heavy-duty positioning tasks. Its 30 mm rear adjusting screw allows operators to fine-tune the stroke end position on the fly, which is invaluable for commissioning new machinery or accommodating variations in workpieces without swapping the cylinder.
This model features a 25 mm piston rod, PT3/8 ports, and a 28 mm air cushion for smooth deceleration. The built-in magnet enables direct mounting of CMSG/DMSG sensors, while the centre trunnion (TC) mount, supplied with the TCM1 bracket, allows the cylinder to pivot, absorbing side loads in swinging applications. The body length is 239 mm.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X100-30STC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 100 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. |
| ×100 | 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.
Quickly adjust the end stop for different product sizes on packaging or filling lines, reducing downtime between batches without mechanical modifications.
Fine-tune the ejector stroke on a conveyor system to handle parts of varying fragility or weight, ensuring a clean push without damaging the product.
Set a precise, repeatable clamping depth for gluing or pressing operations. The 30 mm adjustment range compensates for tooling wear or material thickness changes.
Choose this 80 mm bore when the 63 mm bore's 1559 N push force at 0.5 MPa is insufficient for your application. If your load requires less force, stepping down to the 63 mm bore can reduce air consumption. For fixed-stroke applications where adjustability is not needed, the standard SC80 series is a more economical alternative. This specific model is a direct replacement for another AirTAC SCJ80X100-30STC cylinder with a magnet, centre trunnion mount, and PT ports.
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 maximum push force at 0.9 MPa is 4523 N. Note that as a single-rod cylinder, the push force is greater than the pull force.
No. Like all standard pneumatic cylinders, the SCJ80X100-30STC will not hold its position if air pressure is lost or the valve is centered. The air cushion only decelerates the piston at the end of stroke, and the adjusting screw only sets the stroke end point. For load holding, you must add an external rod lock or a pilot-operated check valve.
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