The AirTAC Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X60-40S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 40 mm range without swapping the cylinder. Ø63mm bore, 60mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X60-40S is a double-acting, single-rod pneumatic cylinder with a 40 mm rear adjusting screw, letting you fine-tune the stroke end position on the fly. With a 63 mm bore, it delivers 1559 N of push force at 0.5 MPa, making it a solid mid-range actuator for tasks that need a precise, repeatable end stop without swapping the cylinder.
This model includes a built-in -S magnet, so standard CMSG/DMSG/EMSG reed or solid-state sensors clamp directly onto the tie-rod barrel for reliable end-of-stroke detection. The 20 mm rod and 28 mm air cushion provide stable deceleration, while the PT1/4 port keeps plumbing simple. The SCJ body length A is 197 mm, slightly longer than a fixed-stroke SC to house the adjustment mechanism.
| Model | Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X60-40S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 60 mm |
| Stroke adjustment | Up to 40 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. |
| -40 | 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 40 mm adjustment range lets technicians dial in the exact stop position during machine commissioning, accommodating minor build tolerances without fabricating new end stops or reprogramming servo axes.
On packaging or labeling lines, operators can quickly adjust the stroke end to handle different product sizes or box heights, reducing downtime between production runs with a simple screw adjustment.
In clamping or pressing fixtures, the adjustable stroke can be used to take up slack as tooling or contact surfaces wear over time, maintaining consistent clamping force and cycle timing without replacing the cylinder.
Choose the SCJ63 when you need the 1559 N push force of a 63 mm bore and the ability to dial in the stroke end during commissioning or changeovers. If your load requires more force, stepping up to an 80 mm bore provides 2513 N of push at 0.5 MPa. For applications where the stroke never needs field adjustment, a fixed-stroke SC63 is a simpler, more economical alternative.
This SCJ63X60-40S is a direct replacement for any AirTAC SCJ63 cylinder with a 60 mm nominal stroke, a 40 mm adjustment range, PT ports, and a magnet. If you are mounting it, remember the SCJ series supports Basic, FA, LB, and TC mounts only—there is no FB flange or CA/CB clevis for this tie-rod design. For strokes of 300 mm or more, evaluate side-loading on the 20 mm rod and consider an external guide or a guided cylinder to prevent rod bending.
Adjustable-stroke checklist
At 0.5 MPa, it delivers 1559 N of push force and 1402 N of pull force. The maximum push force at the 0.9 MPa operating limit is 2805 N. Because it is a single-rod cylinder, the push force is always greater than the pull force due to the rod area.
Yes, this is a direct dimensional and functional replacement for any AirTAC SCJ63 cylinder with a 60 mm nominal stroke, a 40 mm adjustment range, PT ports, and a built-in magnet. Ensure your mounting style (basic, FA, LB, or TC) matches, as the SCJ series does not use FB or CA/CB mounts.
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