The AirTAC Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X50-10STC 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, 50mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X50-10STC is a double-acting, single-rod pneumatic cylinder that puts fine stroke-end tuning directly on the machine. Its rear-cap adjusting screw gives you up to 10 mm of adjustment range, so commissioning teams can dial in the exact stop position without shimming or swapping the cylinder. With a 20 mm rod and PT1/4 ports, this 63 mm bore unit delivers 1559 N of push force at 0.5 MPa.
This model comes factory-equipped with a built-in magnet for CMSG/DMSG sensors and a centre trunnion (TC) mount that includes the TCM1 bracket, letting the cylinder pivot freely under load. The adjustable air cushion decelerates the piston smoothly, and the tie-rod construction keeps service straightforward. Body length A(SCJ) is 197 mm, making it a compact solution for space-constrained pivoting applications.
| Model | Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X50-10STC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 50 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. |
| ×50 | 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.
Packaging lines that switch between box sizes use the 10 mm adjustment to quickly reset the pusher end position without tools, cutting changeover time.
On a welding fixture, the adjustable stroke lets operators compensate for electrode wear or varying part thickness, maintaining consistent clamp force.
A pivoting diverter gate on a conveyor uses the TC trunnion mount and adjustable stroke to fine-tune the gate angle for smooth product transfer.
Choose the SCJ63 bore when your load needs roughly 1560 N push at standard plant air. If you can drop to about 980 N, the SCJ50 saves space and weight; if you need more force, the SCJ80 steps up to 2513 N at the same pressure. The 10 mm adjustment range here is ideal for fine end-stop correction on short-stroke tooling.
This SCJ63X50-10STC replaces any AirTAC SCJ63 with a 50 mm nominal stroke, 10 mm adjust range, PT ports, centre trunnion mount, and magnet. For a fixed-stroke alternative without the rear screw, look at the SC63 series. If the rod sees side load, add an external guide or switch to a guided cylinder to prevent bending.
Adjustable-stroke checklist
At 0.5 MPa, it generates 1559 N pushing and 1402 N pulling. The push force is higher because the single rod reduces the piston area on the pull side. At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 318 kgf.
Yes, if your current cylinder is an AirTAC SCJ63 with a 50 mm nominal stroke, 10 mm adjustment range, PT ports, centre trunnion (TC) mount, and a magnet. The mounting code F-SC63TC matches the trunnion bracket supplied with this unit.
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