The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X30-30S 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. Ø63mm bore, 30mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X30-30S delivers 1559 N of push force at 0.5 MPa in a compact, tie-rod body with a 20 mm rod. Its rear adjusting screw provides up to 30 mm of stroke-end reduction, letting you dial in the exact stop position without changing the cylinder or adding external hard stops.
This model includes a built-in magnet (-S), so CMSG/DMSG/EMSG sensors clamp directly onto the barrel for reliable end-of-stroke sensing. The 28 mm air cushion decelerates the piston quietly, and the PT1/4 ports keep connections standard.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X30-30S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 30 mm |
| Stroke adjustment | Up to 30 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. |
| ×30 | 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.
During machine setup, the 30 mm screw adjustment lets technicians precisely match the stroke to the tooling without swapping cylinders, saving hours of mechanical rework.
As gripper pads or contact surfaces wear, the adjustable stroke end compensates for the lost material thickness, maintaining consistent clamping force on a packaging line.
Quickly adapt the actuator throw for different product sizes on a multi-format assembly cell by turning the rear screw, eliminating the need for multiple fixed-stroke cylinders.
Choose the SCJ63 bore when the SCJ50's 982 N push is marginal. If you need a fixed, non-adjustable stroke, the standard SC63 is a simpler alternative. For guided, high-side-load tasks, consider a rodless or guided cylinder instead. The SCJ63X30-30S replaces any AirTAC SCJ63 with a 30 mm nominal stroke, 30 mm adjust range, PT ports, and a magnet.
Adjustable-stroke checklist
At 0.5 MPa, it delivers 1559 N pushing and 1402 N pulling due to the single 20 mm rod. The maximum push force at 0.9 MPa is 2805 N.
Yes, if you need field adjustability. The SCJ63X30-30S matches the SC63's mounting footprint and porting but adds a rear screw to shorten the stroke end by up to 30 mm. Ensure your stroke and magnet option (-S) match.
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