The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X100-30STC 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, 100mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X100-30STC is a double-acting, single-rod tie-rod cylinder that delivers 1559 N of push force at 0.5 MPa, making it a strong performer for mid-range automation tasks. Its defining feature is the rear-cap adjusting screw, which provides up to 30 mm of field-adjustable stroke reduction, allowing you to precisely set the stroke end position without swapping the cylinder or adding external hard stops.
This model comes equipped with a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors, and a centre trunnion (TC) mount with the TCM1 bracket for applications requiring the cylinder to pivot. The 20 mm piston rod, PT1/4 ports, and 28 mm air cushion ensure reliable, decelerated end-of-stroke performance.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X100-30STC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 100 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. |
| ×100 | 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.
Dial in the exact stroke end position during machine commissioning without needing to machine custom stops. The 30 mm adjustment range allows engineers to compensate for assembly tolerances and achieve perfect actuator timing on the first run.
Quickly adapt to different product sizes on a packaging or sorting line. The adjustable stroke lets operators change the pusher or stopper position in minutes, significantly reducing downtime between batches.
In high-cycle clamping or pressing fixtures, use the adjusting screw to take up mechanical wear on tooling or contact surfaces over time. This maintains consistent clamping force and part quality without replacing the cylinder.
Select the SCJ63 when your application needs a robust 1559 N push force with the flexibility to fine-tune the stroke end by up to 30 mm. If you require more force, stepping up to the SCJ80 bore provides 2513 N of push at the same pressure. For applications with a fixed, non-adjustable stroke, the standard SC63 cylinder is a more economical choice. A direct replacement must match the 63 mm bore, 100 mm nominal stroke, 30 mm adjust range, PT port thread, centre trunnion mounting (F-SC63TC), and built-in magnet.
Adjustable-stroke checklist
At the standard operating pressure of 0.5 MPa, this cylinder generates 1559 N of push force and 1402 N of pull force. The maximum push force at 0.9 MPa is 2805 N. The pull force is lower due to the area of the 20 mm piston rod.
A rear-cap screw mechanically limits the piston's stroke end by up to 30 mm. It is a physical stop for setting position, not a force or speed controller. The cylinder will not hold its position if air pressure is lost; an external rod lock or pilot-operated check valve is required for load holding.
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