The AirTAC Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X60-50 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. Ø63mm bore, 60mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X60-50 is a double-acting, single-rod pneumatic cylinder that puts fine stroke-end tuning directly on the machine. Its rear-cap adjusting screw provides up to 50 mm of field-adjustable range, letting you dial in the exact stop position without swapping the cylinder or adding external hard stops. With a 63 mm bore and 20 mm piston rod, it delivers 1559 N of push force at 0.5 MPa and up to 2805 N at the maximum operating pressure of 0.9 MPa.
This model uses a standard PT1/4 port, an M16x1.5 rod thread, and a 28 mm air cushion to decelerate the piston quietly at end of travel. The body length A(SCJ) is 197 mm, making it slightly longer than a fixed-stroke SC of the same bore. It is a genuine AirTAC tie-rod cylinder built for repeatable, on-the-fly stroke adjustment in compact automation cells.
| Model | Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X60-50 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 60 mm |
| Stroke adjustment | Up to 50 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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 | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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. |
|---|---|
| 63 | Bore size in mm. |
| ×60 | 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.
Packaging or labelling machines that handle multiple product sizes benefit from the 50 mm adjust range. Operators can quickly reposition the stroke end to match a new box height or bottle diameter without mechanical rework.
During machine bring-up, the exact actuator throw often needs fine-tuning. The rear screw lets integrators dial in the precise 60 mm (or shorter) stroke on the fly, eliminating the guesswork of fixed-stroke cylinders.
In clamping or pressing fixtures where tooling or pads wear over time, the adjustable stroke end compensates for material loss. The 1559 N push force at 0.5 MPa provides a firm, consistent clamp as the stop is gradually extended.
Choose the SCJ63X60-50 when your application requires a nominal 60 mm stroke but you need the flexibility to shorten it by up to 50 mm during commissioning or changeover. If you need more force, step up to the 80 mm bore, which provides 2513 N of push at 0.5 MPa. For a lighter, more compact solution, the 50 mm bore offers 982 N. If your stroke is fixed and you never need to adjust it, the standard SC63X60 is a simpler, cost-effective alternative. This SCJ cylinder is a direct replacement for another AirTAC SCJ63 of the same nominal stroke and 50 mm adjust range with PT ports, basic mounting, and no magnet.
Adjustable-stroke checklist
Because it is a single-rod cylinder, push and pull forces differ. At 0.5 MPa, the push force is 1559 N and the pull force is 1402 N (the rod reduces the piston area on the return stroke). At the maximum operating pressure of 0.9 MPa, push force reaches 2805 N.
Only if you need the adjustable stroke feature. The SCJ body is slightly longer to house the adjusting screw (body length A is 197 mm). It is a direct match for another AirTAC SCJ63 with a 60 mm nominal stroke and a 50 mm adjust range, using PT ports and basic mounting. It is not dimensionally interchangeable with an ISO 15552 cylinder.
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