The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X160-75S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 75 mm range without swapping the cylinder. Ø63mm bore, 160mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X160-75S is a double-acting, single-rod pneumatic cylinder that puts fine stroke-end tuning directly in your hands. With a 63 mm bore and a 75 mm adjustable range, you can dial the stroke end back from the nominal 160 mm maximum without swapping the cylinder or adding external hard stops. It delivers 1559 N of push force at 0.5 MPa, making it a solid mid-range actuator for tasks that need both power and precision.
This model includes a built-in 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, PT1/4 ports, and a 28 mm air cushion ensure smooth deceleration, while the tie-rod construction keeps service simple. The body length A(SCJ) is 197 mm, slightly longer than a fixed-stroke SC of the same bore to house the rear adjusting screw.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X160-75S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 160 mm |
| Stroke adjustment | Up to 75 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. |
| ×160 | Nominal (maximum) stroke length in mm. |
| -75 | 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.
A single assembly station processes several product variants with different insertion depths. The 75 mm adjustment range on the SCJ63X160-75S lets operators quickly dial in the correct press-fit stroke for each variant without mechanical tooling changes, slashing changeover time.
Mounted as a pneumatic stop gate, this cylinder positions parts at a precise point on a conveyor. When the line switches to a different box or pallet size, the stroke end is easily re-set via the rear screw to accommodate the new dimensions, avoiding the cost of multiple fixed-stop actuators.
In a high-cycle clamping fixture, the clamped material or the fixture's contact pads can wear over time. The SCJ63X160-75S allows maintenance staff to extend the effective stroke end by adjusting the rear screw, restoring full clamping force without replacing the cylinder or adding shims.
Choose the SCJ63 bore when your application needs around 1559 N of push force at standard shop air. If you can accept a lighter, more compact actuator, stepping down to a 50 mm bore reduces push force to 982 N; moving up to an 80 mm bore nearly doubles it to 2513 N. The 75 mm adjustment range on this model is ideal for processes where the stroke end position changes between product runs or needs fine-tuning during commissioning.
For applications with a fixed, unchanging stroke, the standard SC series offers a simpler, more cost-effective solution without the rear screw. As a direct replacement, this unit matches any AirTAC SCJ63X160-75S with PT ports, a basic mount, and a magnet. For strokes of 300 mm or more, evaluate the rod for side loading; if the load is not perfectly guided, add an external guide rail or switch to a guided cylinder to prevent rod bending and premature seal wear.
Adjustable-stroke checklist
This is a single-rod cylinder, so push and pull forces differ. At 0.5 MPa, the push force is 1559 N and the pull force is 1402 N. At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 3118 N. The rear adjusting screw changes only the stroke end position, not the cylinder's force output.
It can if you need the 75 mm field-adjustable stroke feature. The SCJ63X160-75S matches the mounting footprint and porting of an SC63 of the same nominal stroke, but its body is slightly longer to house the adjusting mechanism. Ensure your machine has clearance for the rear screw and that the 160 mm nominal stroke with 75 mm adjustment matches your motion requirements.
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