The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X150-20TC is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 20 mm range without swapping the cylinder. Ø63mm bore, 150mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X150-20 is a double-acting, single-rod pneumatic cylinder that puts a 20 mm field-adjustable stroke-end screw at your fingertips. With a 63 mm bore and 20 mm rod, it delivers 1559 N of push force at 0.5 MPa, letting commissioning teams dial in the exact end position without swapping the cylinder or adding external hard stops.
This model ships with a TC centre trunnion mount and the matching TCM1 bracket, so it can pivot freely in a clevis-style fixture. The 28 mm air cushion at each end decelerates the piston smoothly, and the PT1/4 ports keep plumbing simple. The body length A(SCJ) is 197 mm, making it a compact choice for format-change and wear take-up tasks on medium-duty automation.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X150-20TC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 150 mm |
| Stroke adjustment | Up to 20 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. |
| ×150 | Nominal (maximum) stroke length in mm. |
| -20 | 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 off the rear screw to incrementally shorten the 150 mm stroke by up to 20 mm, hitting the exact end-stop position without re-machining brackets or swapping cylinders.
On a packaging line that runs multiple box heights, the SCJ63X150-20 lets operators quickly reset the pusher stroke end for a new format, slashing downtime between batches.
In clamping or pressing fixtures where tooling gradually wears, the adjustable stroke-end screw takes up the resulting slack, maintaining consistent contact force without replacing the actuator.
Step up to an 80 mm bore if your load needs more than 1559 N push at 0.5 MPa—the SCJ80 delivers 2513 N. If the stroke is fixed and you never need to tweak the end position, the standard SC63X150 saves cost and eliminates the rear adjuster. For side-load applications, especially at this 150 mm stroke, pair the cylinder with an external guide rail or consider a guided cylinder to protect the rod bearing.
When replacing, match the bore (63 mm), nominal stroke (150 mm), and the 20 mm adjust range. The TC centre trunnion and TCM1 bracket (order code F-SC63TC) must match the pivot geometry, and the PT port thread must align with your existing fittings.
Adjustable-stroke checklist
Because it is a single-rod cylinder, push and pull forces differ. At 0.5 MPa, push force is 1559 N and pull force is 1402 N. At the maximum operating pressure of 0.9 MPa, push force reaches 2805 N. The theoretical maximum at 1.0 MPa is 318 kgf.
Yes, if you need the 20 mm stroke-end adjustment. The SCJ63X150-20 has the same bore, rod diameter, and port size as an SC63, but the body is slightly longer to house the rear adjusting screw. Ensure your mounting (TC centre trunnion in this case) and port thread (PT) match your existing setup.
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