The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X80-30 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, 80mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X80-30 is an 80 mm bore, double-acting single-rod cylinder with a nominal stroke of 80 mm and a 30 mm rear adjusting screw for fine-tuning the stroke end position without cylinder replacement. At 0.5 MPa it delivers 2513 N push and 2268 N pull, supported by a 25 mm diameter piston rod and PT3/8 ports. The body length A(SCJ) is 239 mm, making it a compact adjustable-stroke solution for medium-force automation tasks.
This genuine AirTAC pneumatic cylinder operates on 40 µm filtered air from 0.15 to 1.0 MPa, with a proof pressure of 1.5 MPa and a standard temperature range of -20 to +70 °C. Its adjustable air cushion decelerates the piston smoothly, and the 30 mm adjustment range allows operators to dial in the exact stroke end for commissioning, format changes, or wear compensation without external hard stops.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X80-30 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 80 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. |
| ×80 | 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 screw lets technicians fine-tune the end position during machine commissioning without swapping cylinders, speeding up line start-up for medium-force actuators.
Quickly adjust the stroke end for different product sizes on packaging or material-handling stations, reducing downtime between batches with a simple screw turn.
As grippers or tooling wear, the adjustable stroke can be extended slightly to maintain precise contact, avoiding premature replacement of end-of-arm tooling.
Choose the SCJ80X80-30 when you need a field-adjustable stroke end within a 30 mm window on an 80 mm bore platform. If your force requirement is lower, stepping down to the 63 mm bore (1559 N push at 0.5 MPa) saves space and air consumption; for higher force, the 100 mm bore provides 3927 N push. For applications requiring a fixed, non-adjustable stroke, the standard SC80X80 is a simpler alternative. When replacing an existing unit, match the 80 mm bore, 80 mm nominal stroke, 30 mm adjustment range, PT port thread, and basic mounting configuration.
For strokes of 300 mm or more, consider the rod's slenderness ratio—a 25 mm rod at long extension may deflect under side load. Use an external guide rail or switch to a guided cylinder if the load is not perfectly axial.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 2513 N and the pull force is 2268 N (the pull force is lower because the 25 mm rod reduces the effective piston area on the return stroke). At the maximum operating pressure of 0.9 MPa, push force reaches 4523 N.
Yes, if you need the 30 mm adjustable stroke feature. The SCJ80X80-30 shares the same bore, port size (PT3/8), and mounting accessories as the SC80 series. Ensure the longer body length A(SCJ) of 239 mm fits your machine envelope and that you match the port thread and magnet option.
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