The AirTAC Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X60-30S 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, 60mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X60-30S is a double-acting, single-rod pneumatic cylinder that puts stroke-end fine-tuning directly on the machine. Its rear-cap adjusting screw gives you up to 30 mm of field-adjustable retraction from the nominal 60 mm stroke, so you can dial in the exact end position during commissioning or format changes without swapping the cylinder. The built-in magnet lets CMSG/DMSG sensors clamp directly onto the tie-rod barrel for reliable end-of-stroke sensing.
With a 20 mm piston rod and PT1/4 ports, this 63 mm bore cylinder delivers 1559 N of push force at 0.5 MPa and 2805 N at the maximum operating pressure of 0.9 MPa. The adjustable air cushion provides 28 mm of deceleration at each end, protecting the end caps during high-cycle applications. The body length A(SCJ) is 197 mm, making it a compact drop-in for machines where stroke tweaking adds real value.
| Model | Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X60-30S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 60 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. |
| ×60 | 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 retracted end position on a new assembly line without removing the cylinder. The 30 mm adjustment range lets technicians dial in the perfect stop point for a pick-and-place gripper during initial runoff.
On a clamping fixture, tooling wear can shift the clamp point over thousands of cycles. The rear screw allows operators to tweak the stroke end by a few millimeters to restore perfect clamping pressure without replacing the cylinder or adding shims.
A packaging machine handling different box sizes needs a quick stroke adjustment. The SCJ63X60-30S lets a line operator adjust the pusher stroke end from 30 mm to 60 mm in seconds, minimizing downtime between product runs.
Choose the SCJ63 bore when your application needs the 1559 N push force at 0.5 MPa. If your load is lighter, stepping down to the SCJ50 bore (982 N push at 0.5 MPa) saves space and air consumption. For heavier demands, the SCJ80 bore delivers 2513 N push at the same pressure. The adjustable stroke is the key differentiator here: pick this SCJ model when you anticipate needing to tweak the end position after installation. If the stroke is permanently fixed, the standard SC63 fixed-stroke cylinder is a more economical choice.
This model is a direct replacement for an existing AirTAC SCJ63X60-30S with PT ports, basic mounting, and a magnet. The 60 mm nominal stroke is well within the 1500 mm maximum for this bore, so there are no special side-load concerns at this length. For longer strokes, consider adding an external guide rail to protect the rod from bending under offset loads.
Adjustable-stroke checklist
At 0.5 MPa, it generates 1559 N of push force and 1402 N of pull force (the difference is due to the 20 mm single piston rod). At the maximum operating pressure of 0.9 MPa, the push force reaches 2805 N. Always size your cylinder based on the required working pressure and a suitable safety factor.
Only if you need the adjustable stroke feature and the mounting matches. The SCJ body is slightly longer than the fixed-stroke SC to house the adjusting screw (A dimension is 197 mm). You must also match the port thread (PT), mounting style, and magnet option. The SCJ uses the same mounting accessories as the SC series, but the adjustable screw protrudes from the rear cap, so check your clearance.
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