The AirTAC Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X350-10 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, 350mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X350-10 is a double-acting, single-rod pneumatic cylinder engineered for applications where fine-tuning the stroke end position is critical. With a 63 mm bore and a 20 mm piston rod, it delivers a robust 1559 N of push force at 0.5 MPa, scaling up to 2805 N at the maximum operating pressure of 0.9 MPa. The defining feature is the rear-cap adjusting screw, which provides a 10 mm range to shorten the nominal 350 mm stroke, allowing operators to dial in the exact stopping point without replacing the cylinder or adding external hard stops.
This model is built on a durable tie-rod construction and features a 28 mm air cushion for smooth deceleration. The standard PT1/4 port and M16x1.5 rod thread ensure straightforward integration. Its body length A(SCJ) is 197 mm, and it operates reliably within a -20 to +70 °C range using the default TPU seals, making it a versatile workhorse for general industrial automation.
| Model | Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X350-10 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 350 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. |
| ×350 | 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 commissioning, the 10 mm adjustment screw lets technicians quickly fine-tune the end-stop for a pusher or clamp without fabricating shims, speeding up the final alignment process.
On a conveyor diverter gate, the adjustable stroke can be used to take up mechanical wear on a stop pad over time, maintaining a precise gate position without immediate part replacement.
In a light packaging machine, the 10 mm range allows operators to adjust the stroke end to accommodate slightly different box sizes, enabling a quick format change between product runs.
Choose the SCJ63X350-10 when your process requires a 350 mm stroke with the ability to make minor, on-machine adjustments to the stroke end. If your force requirements are lower, stepping down to a 40 mm bore reduces the push force to 628 N at 0.5 MPa, saving energy and space. For a fixed, non-adjustable stroke, the standard SC63X350 is a direct alternative. This cylinder is a direct replacement for another AirTAC SCJ63 cylinder with the same 350 mm nominal stroke and 10 mm adjustment range, matching PT port threads and basic mounting. For this 350 mm stroke length, be mindful of side loads; if the rod is unsupported, consider an external guide rail to prevent bending and ensure long seal life.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 1559 N and the pull force is 1402 N (due to the 20 mm rod). At the maximum operating pressure of 0.9 MPa, the push force reaches 2805 N. The rear adjusting screw does not alter these force outputs.
The rear screw allows you to shorten the 350 mm nominal stroke by up to 10 mm to set a precise stroke end. Choose this SCJ model when you need to fine-tune the stopping position on the machine, such as for setup or wear compensation. If your application has a fixed, unchanging stroke, the standard SC63X350 fixed-stroke cylinder is a simpler and equally robust choice.
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