The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X500-75 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 75 mm range without swapping the cylinder. Ø80mm bore, 500mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X500-75 is a double-acting, single-rod pneumatic cylinder with a 75 mm rear adjusting screw, letting you fine-tune the stroke end on the fly without swapping the unit. Its 25 mm rod and PT3/8 ports deliver 2513 N of push force at 0.5 MPa, scaling up to 4523 N at the 0.9 MPa maximum operating pressure.
With a 500 mm nominal stroke and a 28 mm air cushion, this cylinder handles mid-to-long linear moves where end-position tweaking is critical. The SCJ body length A is 239 mm, making it a direct fit for machines needing a compact, adjustable tie-rod actuator.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X500-75 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 500 mm |
| Stroke adjustment | Up to 75 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. |
| -75 | 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.
Dial in the exact stroke end position during machine setup without changing cylinders or adding hard stops, saving hours of mechanical adjustment.
Quickly adjust the pusher stroke for different box sizes on a packaging line, reducing downtime between product runs.
Take up mechanical wear in clamping or pressing fixtures by advancing the stroke end screw, maintaining consistent force application over time.
Choose the SCJ80X500-75 when you need to dial in the stroke end during commissioning or format changes. If 2513 N push at 0.5 MPa is too light, step up to the SCJ100 bore for 3927 N; if it is more force than needed, the SCJ63 offers 1559 N. For fixed-stroke applications, the standard SC80X500 is a simpler alternative. At 500 mm stroke, ensure the rod is guided externally if side loads are present to prevent bending. A drop-in replacement must match the 80 mm bore, 500 mm nominal stroke, 75 mm adjust range, PT3/8 ports, and basic mounting.
Adjustable-stroke checklist
At 0.5 MPa, it generates 2513 N pushing and 2268 N pulling due to the single rod. At the maximum operating pressure of 0.9 MPa, push force reaches 4523 N.
Yes, if your current cylinder is an AirTAC SCJ adjustable-stroke model with an 80 mm bore, 500 mm nominal stroke, 75 mm adjust range, and PT3/8 ports. The SCJ is a tie-rod design, not an ISO 15552 profile cylinder.
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