The AirTAC Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X500-30TC 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 SCJ63X500-30TC is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke, built around a robust 63 mm bore and a 20 mm diameter piston rod. Its rear-cap adjusting screw provides a 30 mm range to fine-tune the stroke end position, making it ideal for commissioning and format changes on medium-duty automation. At a standard 0.5 MPa operating pressure, it delivers 1559 N of push force and 1402 N on the pull stroke, with a maximum push thrust of 2805 N at 0.9 MPa.
This model features a centre trunnion (TC) mount, supplied with the TCM1 bracket, allowing the cylinder body to pivot and absorb misalignment in swinging load applications. The 500 mm nominal stroke is well within the 1500 mm maximum for this bore, and the integrated air cushion (28 mm length) decelerates the piston smoothly. The body length A(SCJ) is 197 mm plus stroke, and the PT1/4 ports provide reliable air connectivity.
| Model | Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X500-30TC |
|---|---|
| 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 adjustment screw allows technicians to precisely dial in the final stroke end position during machine setup without swapping cylinders or machining external hard stops.
The TC centre trunnion mount is perfect for actuating a swinging diverter gate on a conveyor line, where the 500 mm stroke and adjustable end point ensure reliable product sorting.
In a high-cycle clamping fixture, the adjustable stroke can be periodically shortened to compensate for wear on the clamp pads, maintaining consistent clamping force without reprogramming.
Select the SCJ63 bore for applications needing push forces in the 1559 N range at 0.5 MPa. If your force requirement is lower, consider stepping down to the 50 mm bore, which provides 982 N of push force. For higher demands, the 80 mm bore offers a substantial jump to 2513 N. This adjustable-stroke model is the right choice when you need to tune the end position on the machine; if the stroke is fixed and never needs adjustment, the standard SC63 fixed-stroke cylinder is a simpler, more cost-effective alternative. For a direct replacement, match an AirTAC SCJ cylinder with a 63 mm bore, 500 mm nominal stroke, a 30 mm adjustment range, PT1/4 ports, and a TC centre trunnion mount using the F-SC63TC bracket. For this 500 mm stroke, ensure the rod is not subjected to high side loads; if lateral forces are present, add an external guide rail or switch to a guided cylinder to prevent rod bending and premature seal wear.
Adjustable-stroke checklist
The theoretical push force at 0.5 MPa is 1559 N, and the pull force is 1402 N due to the 20 mm piston rod reducing the effective area on the retract side. At the maximum operating pressure of 1.0 MPa, the push force reaches 3118 N.
Yes, provided the mounting and porting are compatible. The SCJ63 body is slightly longer to house the adjusting screw. Ensure you match the 63 mm bore, PT1/4 ports, and that your mounting arrangement accepts the TC trunnion bracket (F-SC63TC). The adjustable stroke adds the ability to fine-tune the end position by up to 30 mm.
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