The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X200-100 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 100 mm range without swapping the cylinder. Ø63mm bore, 200mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X200-100 is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, providing a nominal 200 mm stroke that can be shortened by up to 100 mm via the rear-cap adjusting screw. This 63 mm bore unit delivers a push force of 1559 N at 0.5 MPa and 2805 N at the maximum operating pressure of 0.9 MPa, using a 20 mm diameter piston rod. The cylinder body length A is 197 mm, and it includes a 28 mm air cushion for smooth end-of-stroke deceleration.
This adjustable-stroke design is ideal for commissioning and fine-tuning mechanical end-stops without replacing the cylinder or adding external hardware. The SCJ63 series uses PT1/4 ports and an M16x1.5 rod thread, and it supports a maximum standard stroke of 1500 mm. This basic configuration comes with a TPU seal, PT threads, and no magnet, making it a straightforward, cost-effective solution for general industrial automation tasks requiring on-machine stroke adjustment.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X200-100 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 200 mm |
| Stroke adjustment | Up to 100 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. |
| ×200 | Nominal (maximum) stroke length in mm. |
| -100 | 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.
The 100 mm adjustment range allows technicians to precisely dial in the actuator's end position during initial machine setup, accommodating variations in tooling or workpiece placement without swapping cylinders.
On packaging or assembly lines, quickly re-adjust the stroke end to handle different product sizes or formats, minimizing downtime between batches.
Over time, as gripper pads or contact surfaces wear down, the stroke can be incrementally extended to maintain consistent clamping or pressing force without replacing the actuator.
Choose the SCJ63 when your application needs around 1559 N of push force at standard plant air pressure. If you require more force, stepping up to the 80 mm bore provides 2513 N of push at 0.5 MPa. For applications with a fixed, unchanging stroke, the standard SC63 fixed-stroke cylinder is a simpler and more economical alternative. A direct replacement must match the 63 mm bore, 200 mm nominal stroke, 100 mm adjustment range, PT1/4 ports, and basic mounting. For strokes of 200 mm or more, ensure the rod is not subjected to high side loads; if lateral forces are present, use an external guide rail or switch to a guided cylinder to prevent rod bending and premature seal wear.
Adjustable-stroke checklist
A rear-cap screw allows you to shorten the piston's forward stroke end by up to 100 mm. The cylinder's nominal maximum stroke is 200 mm, but you can field-set any effective stroke between 100 mm and 200 mm. It does not adjust the retract stroke or the cylinder's force output.
At 0.5 MPa, the push force is 1559 N and the pull force is 1402 N. The pull force is lower because the 20 mm piston rod reduces the effective piston area on the return side. At the maximum operating pressure of 0.9 MPa, the push force reaches 2805 N.
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