The AirTAC Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X60-50STC is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 50 mm range without swapping the cylinder. Ø63mm bore, 60mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X60-50STC is a double-acting, single-rod pneumatic cylinder with a 63 mm bore and a nominal 60 mm stroke, featuring a rear-cap adjusting screw that provides a 50 mm field-adjustable stroke-end range. This allows precise fine-tuning of the piston stop position without removing the cylinder from the machine, delivering 1559 N of push force and 1402 N of pull force at 0.5 MPa.
This model includes a built-in magnet (S) for direct mounting of CMSG/DMSG/EMSG sensors and a centre trunnion (TC) mounting, supplied with the TCM1 bracket (order code F-SC63TC) for pivoting applications. The 20 mm rod with M16x1.5 thread and 28 mm air cushion ensure smooth deceleration, with a body length A of 197 mm. Operating pressure ranges from 0.15 to 1.0 MPa, with a proof pressure of 1.5 MPa.
| Model | Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X60-50STC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 60 mm |
| Stroke adjustment | Up to 50 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. |
| ×60 | Nominal (maximum) stroke length in mm. |
| -50 | 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 50 mm adjusting screw allows engineers to dial in the exact stroke end position for a 63 mm bore actuator, accommodating stack-up tolerances without fabricating custom stops.
On packaging lines, the SCJ63X60-50STC quickly adapts the stroke for different box sizes. The centre trunnion mount lets the cylinder pivot, and the magnet provides end-of-stroke sensor feedback to the PLC.
In clamping or pressing fixtures, the adjustable stroke compensates for tooling wear over time. The 1559 N push force at 0.5 MPa provides a robust hold, and the 28 mm air cushion protects the end cap during high-cycle operation.
Select the SCJ63X60-50STC when you need to commission or changeover a machine stroke by up to 50 mm on the fly. For higher force, step up to the 80 mm bore (2513 N push at 0.5 MPa); for a lighter, more compact solution, the 50 mm bore offers 982 N push. This adjustable-stroke unit is ideal for format changes, but if your application requires a fixed, repeatable stroke without adjustment, consider the standard SC63X60 fixed-stroke cylinder.
For replacement, match this model's bore (63 mm), nominal stroke (60 mm), 50 mm adjust range, PT port thread, TC trunnion mount, and built-in magnet. The nominal stroke is well within the 1500 mm maximum for this bore, but at longer strokes, always use an external guide or a guided cylinder to manage side loads and prevent rod bending.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 1559 N and the pull force is 1402 N. The maximum push force at the 0.9 MPa operating limit is 2805 N. Because it is a single-rod cylinder, the push force is greater than the pull force due to the area of the 20 mm rod.
Yes, if you need field adjustability. The SCJ63X60-50STC matches the mounting footprint of an SC63 with a TC trunnion but adds a 50 mm stroke-end adjustment screw. Ensure your replacement matches the 63 mm bore, PT ports, and magnet option. The adjustable screw only sets the stroke end; it does not change the cylinder's force or speed.
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