The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X110-50 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 50 mm range without swapping the cylinder. Ø63mm bore, 110mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X110-50 is a double-acting, single-rod pneumatic cylinder that puts stroke-end adjustment directly on the machine. A rear-cap screw lets you shorten the nominal 110 mm stroke by up to 50 mm, so commissioning teams and maintenance crews can dial in the exact end position without changing the cylinder or adding external hard stops. The 63 mm bore delivers 1559 N of push force at 0.5 MPa and 2805 N at 0.9 MPa, while the 20 mm piston rod and 28 mm air cushion handle deceleration smoothly.
This model uses the standard PT1/4 port and M16x1.5 rod thread, with a body length A of 197 mm. The adjustable screw only sets the stroke end—it does not alter force, speed, or the cylinder's fundamental double-acting cycle. For sensing, add the -S magnet option to clamp CMSG/DMSG sensors onto the tie-rod barrel.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X110-50 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 110 mm |
| Stroke adjustment | Up to 50 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. |
| ×110 | Nominal (maximum) stroke length in mm. |
| -50 | 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.
During machine bring-up, technicians can back out the rear adjusting screw to fine-tune the actuator's end position by up to 50 mm, eliminating the need to shim or reposition the entire cylinder.
On packaging lines that switch between product sizes, the SCJ63X110-50 lets operators quickly reset a pusher or gate stroke without mechanical rework, reducing downtime between batches.
In clamping or pressing fixtures where tooling or pads wear over time, the adjustable stroke end can be incrementally extended to maintain consistent contact force and part engagement.
Choose the SCJ63 when your application needs the 63 mm bore's 1559 N push at 0.5 MPa. If you require more force, the SCJ80 provides 2513 N push at the same pressure; for a lighter, more compact solution, the SCJ50 delivers 982 N. The 50 mm adjustment range is ideal where stroke length must be tuned after installation—such as aligning a stop position with a conveyor or fixture. If your stroke is fixed and never changes, the standard SC63 fixed-stroke cylinder is a simpler, lower-cost alternative.
For a drop-in replacement, match the SCJ63 bore, 110 mm nominal stroke, 50 mm adjust range, PT1/4 port thread, and basic mounting. The SCJ series does not support FB flange or CA/CB clevis mounts; use FA front flange, LB foot, or TC centre trunnion if a bracket is needed. At 110 mm stroke, the rod is well-supported, but for strokes over 300 mm, consider an external guide or a guided cylinder to manage side loads.
Adjustable-stroke checklist
At 0.5 MPa, the cylinder produces 1559 N pushing and 1402 N pulling. At the maximum operating pressure of 1.0 MPa, theoretical push force reaches 3180 N (318 kgf). The push force is higher than the pull force because the single rod reduces the piston area on the return side.
Yes, if you need field-adjustable stroke. The SCJ63X110-50 shares the same bore, port size (PT1/4), and mounting accessories (FA, LB, TC) as the SC63. Ensure your design can accommodate the slightly longer body length (197 mm A dimension) and the rear adjusting screw. The adjustment range is 50 mm from the nominal 110 mm stroke.
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