The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X500-30 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, 500mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X500-30 is an 80 mm bore double-acting single-rod cylinder with a rear adjusting screw that provides up to 30 mm of field-adjustable stroke-end reduction. Its 25 mm rod generates 2513 N of push force at 0.5 MPa, making it suitable for medium-force positioning tasks where the final stroke length needs fine-tuning during commissioning or format changes.
This tie-rod cylinder body measures 239 mm in length (A dimension) and uses PT3/8 ports. The adjustable cushion decelerates the piston smoothly over the last 28 mm of travel. The screw sets the stroke end position without altering the cylinder's force output or nominal 500 mm rating, offering a simple mechanical solution for process adjustments.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X500-30 |
|---|---|
| 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.
Fine-tune the end position of a material stop or pusher during initial machine setup without swapping cylinders or machining external hard stops, saving setup time.
Quickly adjust the stroke for different product sizes on a packaging or sorting line. The 30 mm range allows operators to dial in the exact push distance for each batch.
Take up mechanical play or compensate for tooling wear over time in clamping or pressing fixtures. The screw adjuster restores the precise end position without replacing parts.
For applications needing slightly more force, the 100 mm bore SCJ delivers 3927 N push at 0.5 MPa. If the stroke is fixed and never requires field adjustment, a standard SC80X500 fixed-stroke cylinder is a simpler, more cost-effective alternative. For this model, a direct replacement must match the 80 mm bore, 500 mm nominal stroke, 30 mm adjust range, PT3/8 ports, and basic mounting. At this 500 mm stroke length, ensure the rod is adequately supported against side loads; if lateral forces are present, consider adding an external guide rail or switching to a guided cylinder.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, this cylinder provides 2513 N of push force and 2268 N of pull force. The maximum push force at 0.9 MPa is 4523 N. The push force is greater than the pull force because it is a single-rod cylinder.
A screw in the rear cap allows you to shorten the stroke end by up to 30 mm. This sets the physical stop position for the piston. It is a mechanical stroke limiter, not a force or speed controller, and it does not change the cylinder's nominal 500 mm stroke rating.
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