The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X500-30S 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, 500mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X500-30S is a double-acting, single-rod pneumatic cylinder that delivers 2513 N of push force at 0.5 MPa, making it a powerful choice for medium-duty industrial automation. Its defining feature is the rear-cap adjusting screw, which provides a 30 mm field-adjustable range to fine-tune the stroke end position without removing the cylinder from the machine.
This model includes a built-in magnet (-S suffix), allowing for direct mounting of CMSG/DMSG/EMSG sensors on the 80 mm bore tie-rod barrel for precise end-of-stroke detection. With a 25 mm diameter piston rod, PT3/8 ports, and a 28 mm air cushion, the cylinder is built for reliable operation at speeds from 30 to 800 mm/s.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X500-30S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 500 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. |
| ×500 | 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.
Field technicians can dial in the exact 500 mm stroke end position using the 30 mm adjustment screw during initial machine commissioning, eliminating the need for custom-length cylinders.
Quickly adapt a pusher or stopper station on a conveyor line for different package sizes by adjusting the stroke end, reducing downtime between production runs.
In high-cycle clamping or pressing fixtures, the adjustable stroke allows operators to take up mechanical wear in tooling over time, maintaining consistent clamp force without replacing parts.
Step up to the SCJ100 bore for a significant force increase to 3927 N push at 0.5 MPa, or down to the SCJ63 for a more compact 1559 N push. This SCJ80X500-30S is the correct replacement for an existing AirTAC SCJ80 cylinder with a 500 mm nominal stroke, 30 mm adjustment range, PT ports, and a magnetic piston. For applications with a fixed, unchanging stroke, the standard SC80X500-S is a simpler, non-adjustable alternative. At this 500 mm stroke, ensure the rod is not subjected to high side loads; if lateral forces are present, an external linear guide or a guided cylinder will prevent rod bending and premature seal wear.
Adjustable-stroke checklist
The push force is 2513 N at 0.5 MPa and 4523 N at the maximum operating pressure of 0.9 MPa. The pull force is lower at 2268 N at 0.5 MPa because the 25 mm piston rod reduces the effective piston area on the retract stroke.
A screw in the rear end-cap limits how far the piston can retract. By turning this screw, you can shorten the stroke end by up to 30 mm from the 500 mm nominal maximum. It adjusts the mechanical stop position only, not the cylinder's force or speed.
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