The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X150-50SFA 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, 150mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X150-50SFA is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, offering a 50 mm tuning range on the nominal 150 mm stroke. This 63 mm bore model delivers 1559 N of push force at 0.5 MPa and up to 2805 N at 0.9 MPa, providing a robust force class for medium-duty positioning and clamping tasks.
This specific configuration includes a built-in magnet for sensor compatibility and an FA front flange for direct panel mounting. The 20 mm rod with M16x1.5 thread ensures solid connection, while the 28 mm air cushion decelerates the piston smoothly. The body length A(SCJ) is 197 mm, making it a compact yet powerful solution for space-constrained setups requiring precise stroke adjustment.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X150-50SFA |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 150 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. |
| ×150 | 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.
The 50 mm rear adjusting screw allows operators to precisely dial in the final stop position during machine commissioning, eliminating the need for shims or external hard stops in clamping and pressing fixtures.
Quickly adapt the cylinder's stroke end for different product sizes on packaging or assembly lines. The front flange mount and magnet enable easy integration and position feedback for each new format.
In high-cycle applications, the adjustable stroke can be extended slightly over time to compensate for tooling or seal wear, maintaining consistent process quality without replacing the cylinder immediately.
Choose this SCJ63 model when you need push force around 1559 N at standard plant pressure, which sits between the smaller 40 mm bore (628 N) and larger 80 mm bore (2513 N). The 50 mm adjustment range is ideal for commissioning trials or format changeovers where the final stroke end position is determined on the machine. If your application requires a fixed, non-adjustable stroke, the standard SC63 cylinder is a more economical choice.
For a direct replacement, match the 63 mm bore, 150 mm nominal stroke, 50 mm adjust range, PT port thread, FA front flange mounting (F-SC63FA), and the -S magnet option. For strokes of 300 mm or more, consider an external guide or a guided cylinder to protect the 20 mm rod from side-load deflection and bending.
Adjustable-stroke checklist
A rear-cap adjusting screw limits the piston's extend stroke end. You can shorten the nominal 150 mm stroke by up to 50 mm in the field. This adjusts the physical stopping position, not the air pressure or speed, and does not affect the cylinder's 1559 N push force at 0.5 MPa.
Yes, if you need the adjustable feature. The SCJ63X150-50SFA matches the mounting footprint of an SC63 with an FA front flange. Ensure your replacement matches the 63 mm bore, 150 mm nominal stroke, PT ports, magnet sensor option, and the F-SC63FA mounting accessory for a drop-in fit.
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