The AirTAC Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X500-30S 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, 500mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X500-30S is a double-acting, single-rod pneumatic cylinder that integrates a rear-cap adjusting screw, providing up to 30 mm of field-adjustable stroke-end reduction without dismounting the unit. With a 63 mm bore and 500 mm nominal stroke, it delivers a push force of 1559 N at 0.5 MPa and 2805 N at the 0.9 MPa maximum operating pressure, making it a robust choice for applications requiring mid-stroke fine-tuning.
A built-in magnet is included with the -S suffix, allowing direct mounting of CMSG/DMSG/EMSG sensors along the tie-rod barrel for reliable end-of-stroke or mid-position sensing. The 20 mm piston rod, PT1/4 ports, and 28 mm air cushion at each end ensure smooth deceleration, while the standard TPU seals maintain a reliable -20 to +70 °C operating range.
| Model | Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X500-30S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 500 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. |
| ×500 | 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.
The 30 mm rear adjuster allows engineers to dial in the exact stroke end position during machine setup without swapping cylinders, speeding up the commissioning of new automated stations.
In material handling, the stroke can be gradually extended via the screw to compensate for wear on a mechanical end-stop or gripper pad, maintaining consistent part placement over time.
The adjustable stroke enables a single actuator to handle multiple product sizes on a packaging line, with the -S magnet providing sensor feedback to the PLC for each format's validated end position.
Select the SCJ63X500-30S when you need a 63 mm bore cylinder with a 500 mm stroke that can be precisely shortened by up to 30 mm during commissioning or changeovers. If your force requirement is lower, stepping down to a 50 mm bore (982 N push at 0.5 MPa) can reduce air consumption; for higher force, an 80 mm bore provides 2513 N push. For a fixed-stroke application without adjustment, the standard SC63X500 is a direct alternative.
This model is a direct replacement for another AirTAC SCJ63X500-30S with a magnet, PT threads, and basic mounting. For strokes of 500 mm, be mindful of side-loading on the 20 mm rod; if the load is not guided externally, consider adding a guide rod assembly or switching to a guided cylinder to prevent rod bending and premature seal wear.
Adjustable-stroke checklist
The cylinder provides 1559 N of push force and 1402 N of pull force at 0.5 MPa. The rear adjusting screw only limits the stroke end position within a 30 mm range; it does not alter the cylinder's bore, rod diameter, or output force.
No, like any standard pneumatic cylinder, the SCJ63X500-30S will not hold its position if air pressure is exhausted. The air cushion only decelerates the piston at the stroke end. To hold a load safely without pressure, you must add an external mechanical lock or a pilot-operated check valve.
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