The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X180-30STC is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 30 mm range without swapping the cylinder. Ø63mm bore, 180mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X180-30STC is a double-acting, single-rod pneumatic cylinder that puts fine stroke adjustment right at the rear cap. A 30 mm adjusting screw lets you dial in the exact stroke end position on the machine, making it invaluable during commissioning or for quick format changeovers without swapping the cylinder. With a 20 mm piston rod and a 28 mm air cushion, it delivers controlled deceleration at both ends.
At 0.5 MPa, this 63 mm bore unit generates 1559 N of push force and 1402 N of pull force, placing it in a robust mid-range power class. The built-in magnet allows direct mounting of CMSG/DMSG/EMSG sensors on the tie-rod barrel for reliable position feedback. The integrated TC centre trunnion mount (supplied with TCM1 bracket, order code F-SC63TC) allows the cylinder to pivot, making it ideal for swinging or articulating loads.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X180-30STC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 180 mm |
| Stroke adjustment | Up to 30 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. |
| ×180 | Nominal (maximum) stroke length in mm. |
| -30 | 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.
The 30 mm rear adjusting screw allows engineers to precisely dial in the 180 mm stroke end-point during initial machine setup, eliminating the need for custom spacers or hard stops.
On packaging or sorting lines, quickly adjust the cylinder's end position to accommodate different product sizes or formats without mechanical modifications, reducing downtime.
In high-cycle clamping or pressing fixtures, the adjustable stroke can be used to take up mechanical wear on tooling or workpieces over time, maintaining consistent process quality.
Choose the SCJ63 when you need the 1559 N push force at 0.5 MPa that a 63 mm bore provides. If your application requires more force, step up to the 80 mm bore, which delivers 2513 N of push force at the same pressure. For a lighter, more compact design where force requirements are lower, the 50 mm bore offers 982 N. If your stroke length is fixed and will never need field adjustment, a standard SC63 fixed-stroke cylinder is a simpler, more cost-effective alternative.
This model is a direct replacement for any AirTAC SCJ63X180-30S cylinder with a TC trunnion mount and PT ports. For strokes of 300 mm or more, be mindful of side loading on the 20 mm rod; an external guide rail or switching to a guided cylinder assembly is recommended to prevent rod bending and premature seal wear.
Adjustable-stroke checklist
Being 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 force at 1.0 MPa is 318 kgf.
Yes, this is a genuine AirTAC SCJ63X180-30STC. It is a direct dimensional and performance match for any SCJ63 cylinder with a 180 mm nominal stroke, 30 mm adjustment range, PT port threads, a TC centre trunnion mount, and a magnet for sensors.
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