The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X100-100 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, 100mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X100-100 is a double-acting, single-rod pneumatic cylinder with a full 100 mm of field-adjustable stroke range, letting you precisely set the stroke end position without swapping the unit. With a 63 mm bore, it delivers 1559 N of push force at 0.5 MPa and up to 2805 N at 0.9 MPa, while the 20 mm rod and 28 mm air cushion ensure smooth, controlled motion.
This adjustable-stroke cylinder uses a rear-cap adjusting screw to shorten the nominal 100 mm stroke by up to 100 mm, making it ideal for commissioning, format changes, or taking up mechanical wear. The body length A(SCJ) is 197 mm, and it uses a PT1/4 port with an M16x1.5 rod thread. It is a genuine AirTAC component built for reliable, repeatable performance in industrial automation.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X100-100 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 100 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. |
| ×100 | 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.
During machine commissioning, the 100 mm adjustment range allows engineers to fine-tune the actuator's end-stop position on the fly, eliminating the need to stock multiple fixed-stroke cylinders for trial-and-error setups.
In high-cycle clamping or pressing applications, the adjustable stroke can be periodically tweaked to compensate for tooling or pad wear, maintaining consistent contact force without replacing the cylinder.
For a packaging line that handles different box sizes, the SCJ63X100-100 allows operators to quickly change the pusher stroke end position to match the new product format, drastically reducing changeover time.
Choose the SCJ63X100-100 when you need to dial in the end position of a 100 mm stroke on the machine. If you require more force, step up to the 80 mm bore, which provides 2513 N of push at 0.5 MPa. For a fixed, non-adjustable stroke, the standard SC63X100 is a simpler, more cost-effective alternative. This model is a direct replacement for another AirTAC SCJ63X100-100 with a PT port and basic mounting. For strokes of 300 mm or more, evaluate side-loading and consider an external guide or a guided cylinder to prevent rod bending.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, the push force is 1559 N and the pull force is 1402 N. The maximum push force at 0.9 MPa is 2805 N. Because it is a single-rod cylinder, the push force is always greater than the pull force due to the area of the 20 mm rod.
Yes, this is a direct, form-fit-function replacement for any AirTAC SCJ63X100-100 cylinder with a PT port and basic mounting. Ensure your replacement has the same bore (63 mm), nominal stroke (100 mm), and 100 mm adjustment range. If your old unit has a magnet or different mounting, you will need the corresponding suffix code (e.g., -S for magnet, -TC for center trunnion).
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