The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X175-10 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 10 mm range without swapping the cylinder. Ø63mm bore, 175mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X175-10 is a double-acting, single-rod pneumatic cylinder that lets you dial in the stroke end position through a rear-cap adjusting screw with a 10 mm range. Its 63 mm bore delivers 1559 N of push force at 0.5 MPa and 2805 N at the maximum operating pressure of 0.9 MPa, while the 20 mm piston rod provides solid rigidity for push/pull tasks.
With a 175 mm nominal stroke and a 28 mm air cushion at each end, this tie-rod cylinder decelerates the piston smoothly without external shock absorbers. The PT1/4 port and M16x1.5 rod thread keep connections straightforward, and the body length A(SCJ) of 197 mm fits into layouts where a fixed-stroke SC would normally sit, plus a little extra for the adjuster.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X175-10 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 175 mm |
| Stroke adjustment | Up to 10 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. |
| ×175 | Nominal (maximum) stroke length in mm. |
| -10 | 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, dial the rear screw to set the exact end stop after the cylinder is installed, eliminating the need to shim or reposition mounting brackets.
On packaging or assembly lines that switch between product sizes, adjust the stroke end in seconds to match a new box height or pallet stack without swapping the actuator.
In clamping or pressing fixtures where tooling gradually wears, periodically advance the screw to restore the original squeeze depth without replacing the cylinder or adding shims.
Choose the SCJ63X175-10 when you need to fine-tune the stroke end during commissioning or format changeovers without adding external hard stops. If 1559 N push at 0.5 MPa is too light, the 80 mm bore steps up to 2513 N; if it is more force than required, the 50 mm bore delivers 982 N and a lighter body. For applications that never need stroke adjustment, the fixed-stroke SC63X175 saves the rear screw length. A direct replacement must match the 63 mm bore, 175 mm nominal stroke, 10 mm adjust range, PT ports, basic mounting, and no magnet — substituting a different adjust value or port thread changes the end-position setting and plumbing fit.
Adjustable-stroke checklist
At 0.5 MPa it generates 1559 N push and 1402 N pull; at 0.7 MPa push rises to 2182 N, and at the maximum operating pressure of 0.9 MPa it reaches 2805 N. Pull force is lower because the 20 mm rod reduces the effective piston area on the return stroke.
Physically the mounting footprints are compatible, but the SCJ body is slightly longer due to the rear adjusting screw housing. You must also confirm the 10 mm adjust range suits your application — the SCJ lets you shorten the stroke end by up to 10 mm, while the SC has a fixed end position.
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