The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X50-10 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 10 mm range without swapping the cylinder. Ø80mm bore, 50mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X50-10 delivers 2513 N of push force at 0.5 MPa from an 80 mm bore, with a rear-cap adjusting screw that shortens the stroke end by up to 10 mm. This field-adjustable range lets you fine-tune the piston stop for commissioning trials or minor wear take-up without swapping the cylinder. The single-rod design uses a 25 mm diameter piston rod and PT3/8 ports, with a body length A of 239 mm.
The built-in variable air cushion decelerates the piston smoothly over the last 28 mm of travel, protecting end caps at speeds up to 800 mm/s. Operating pressure spans 0.15-1.0 MPa, and the TPU seal handles -20 to +70 °C. This basic-mount model accepts the SCJ accessory subset—foot (LB), front flange (FA), or centre trunnion (TC)—for flexible machine integration.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X50-10 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 50 mm |
| Stroke adjustment | Up to 10 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. |
| ×50 | Nominal (maximum) stroke length in mm. |
| -10 | 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.
Use the 10 mm rear screw to dial in the exact stroke end position during machine setup, eliminating the need for external hard stops on a packaging placer.
Compensate for pad or gripper wear on a pick-and-place unit by slightly extending the effective stroke via the rear adjuster, maintaining consistent part contact.
Quickly reset the stroke end for a different product size on a diverting gate, using the screw adjustment instead of changing the cylinder or mechanical stops.
Step up to the 100 mm bore SCJ if your application needs more than the 2513 N push this 80 mm bore delivers at 0.5 MPa; the 100 mm bore provides 3927 N at the same pressure. For lighter, more compact installations, the 63 mm bore SCJ offers 1559 N push. If your stroke length is fixed and never needs field adjustment, a standard SC fixed-stroke cylinder is a simpler, lower-cost alternative. For side-loaded or guided motion, pair this cylinder with an external guide or switch to a guided cylinder. A direct replacement must match the 80 mm bore, 50 mm nominal stroke, 10 mm adjust range, PT3/8 ports, and basic mounting.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 2513 N and the pull force is 2268 N (reduced by the 25 mm rod area). At the maximum operating pressure of 0.9 MPa, push force reaches 4523 N. The theoretical force at 1.0 MPa is 513 kgf.
You can if the mounting and porting match, but the SCJ body is slightly longer due to the rear adjusting mechanism. A direct replacement requires an 80 mm bore, 50 mm nominal stroke, 10 mm adjustment range, PT3/8 ports, and the same mounting accessory from the SCJ subset (basic, FA, LB, or TC).
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