The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X200-50 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 50 mm range without swapping the cylinder. Ø80mm bore, 200mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X200-50 is a double-acting, single-rod pneumatic cylinder that puts 2513 N of push force at your disposal at 0.5 MPa, drawing from an 80 mm bore. Its defining feature is the rear-cap adjusting screw, which lets you shorten the stroke end by up to 50 mm in the field—ideal for commissioning tweaks or format changeovers without swapping the cylinder.
A 25 mm diameter piston rod and PT3/8 ports handle the airflow, while the 28 mm air cushion at each end decelerates the load smoothly. The tie-rod body measures 239 mm long (A dimension), making it a compact adjustable-stroke solution for machines that need frequent end-stop fine-tuning.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X200-50 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 200 mm |
| Stroke adjustment | Up to 50 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. |
| ×200 | Nominal (maximum) stroke length in mm. |
| -50 | 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 during initial machine run-off without machining new stops. The 50 mm adjustment range lets technicians quickly dial in the exact stroke needed.
Quickly adapt a packaging or sorting line to a new box or pallet size. Operators can shorten the stroke end by up to 50 mm to match a different product dimension.
Take up mechanical play in a clamping or pressing fixture over time. The rear screw lets you advance the stroke end slightly to maintain consistent contact force as tooling wears.
Step up to the 100 mm bore if you need 3927 N of push force at the same 0.5 MPa, or drop to the 63 mm bore (1559 N) for a lighter, more compact actuator. This SCJ adjustable-stroke model is the right pick when you need to dial in the stroke end position on the machine; if your stroke is fixed and never changes, the standard SC80X200 is a simpler, cost-effective alternative. For replacement, match an AirTAC SCJ80X200-50 with PT ports, basic mounting, and no magnet. At a 200 mm stroke, rod buckling is rarely a concern, but if the load applies a significant side force, add an external guide rail or switch to a guided cylinder.
Adjustable-stroke checklist
At 0.5 MPa, it delivers 2513 N pushing and 2268 N pulling (the pull force is lower because of the 25 mm rod area). At the maximum operating pressure of 0.9 MPa, the push force reaches 4523 N.
Yes, the SCJ80X200-50 shares the same bore, port size (PT3/8), and mounting interfaces as the SC80. The body is slightly longer to house the adjusting screw, so check the 239 mm A-length against your available space. Ensure you order the same mounting and magnet options.
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