The AirTAC Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X80-30S 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, 80mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X80-30S is a double-acting, single-rod pneumatic cylinder that puts stroke-end tuning directly into the rear cap. A 30 mm adjusting screw lets you dial back the nominal 80 mm stroke without dismounting the cylinder, making it a practical choice for commissioning trials or format changeovers where the exact stop position must be found on the machine. The built-in magnet (-S) allows CMSG/DMSG/EMSG sensors to clamp straight onto the tie-rod barrel for non-contact position sensing.
With a 63 mm bore and 20 mm rod, this unit delivers 1559 N of push force at 0.5 MPa and can reach 2805 N at the maximum operating pressure of 0.9 MPa. The 28 mm air cushion at each end decelerates the piston quietly, while the PT1/4 port and M16×1.5 rod thread keep connections simple. Body length A(SCJ) is 197 mm, giving a compact envelope for a cylinder in this force class.
| Model | Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X80-30S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 80 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. |
| ×80 | 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.
Fine-tune the end-of-stroke position during machine bring-up without swapping cylinders or machining external stops. The 30 mm range covers most trial-and-error adjustments.
As tooling or gripper pads wear, the adjusting screw compensates for the lost material thickness, maintaining consistent clamping or pressing depth over thousands of cycles.
On packaging or labelling lines, quickly dial in a new stroke end when switching product sizes. The magnet-equipped barrel sends position confirmation to the PLC via clamp-on sensors.
Step up to an 80 mm bore (2513 N push at 0.5 MPa) if the 63 mm frame runs too close to its force limit; step down to a 50 mm bore (982 N push) when speed and lower air consumption matter more than raw thrust. If your application needs a fixed, repeatable stroke with no field adjustment, the standard SC series is a simpler and slightly shorter alternative. For guided loads where side forces are present, pair the SCJ with an external guide unit or switch to a guided cylinder.
A direct replacement must match the 63 mm bore, 80 mm nominal stroke, 30 mm adjustment range, PT port thread, and the built-in magnet. This model uses the basic mounting style; if you need a pivoting mount later, the TC centre trunnion (F-SC63TC) can be ordered separately.
Adjustable-stroke checklist
Push force is 1559 N at 0.5 MPa, 2182 N at 0.7 MPa, and 2805 N at 0.9 MPa. Pull force is lower because of the single 20 mm rod: 1402 N at 0.5 MPa. The adjustable screw does not change the force rating.
Yes, if the original unit has a 63 mm bore, 80 mm nominal stroke, 30 mm adjustment range, PT threads, and a magnet. Confirm the mounting style matches; this basic-body version accepts FA, LB, or TC brackets if you need to change the mounting later.
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