The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X50-10S 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 SCJ63X50-10S is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, giving you a 10 mm fine-tuning range on the 50 mm nominal stroke. It delivers 1559 N of push force at 0.5 MPa and up to 2805 N at its 0.9 MPa maximum operating pressure, driven by a 20 mm diameter piston rod.
This model includes a built-in magnet, allowing CMSG/DMSG/EMSG solid-state and reed sensors to be clamped directly onto the tie-rod barrel for precise, non-contact position sensing. The cylinder uses a PT1/4 port and features an adjustable air cushion (28 mm long) to decelerate the piston smoothly at the end of travel.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X50-10S |
|---|---|
| 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.
The 10 mm rear adjusting screw lets technicians dial in the exact stroke end position on a new assembly line without swapping cylinders or machining custom end-stops, speeding up machine runoff.
In clamping or pressing fixtures, the adjustable stroke can be shortened slightly over time to compensate for pad wear or material compression, maintaining consistent clamping force without reprogramming.
A packaging line running different box sizes can use the SCJ's adjustable stroke to quickly change the pusher's end position between formats, reducing changeover time compared to fixed-stroke cylinders.
Choose the SCJ63X50-10S when a 63 mm bore's force class is needed but the stroke end must be precisely dialed in during commissioning or after tooling wear. If 1559 N of push force is insufficient, stepping up to an 80 mm bore provides 2513 N at the same 0.5 MPa. For applications where the stroke never needs adjustment, the simpler fixed-stroke SC63X50 cylinder is a more economical choice.
As a direct replacement, match an AirTAC SCJ cylinder with the same 63 mm bore, 50 mm nominal stroke, 10 mm adjust range, PT port thread, and built-in magnet. This basic mount model requires no additional brackets, but for pivoting loads, an SCJ with a TC centre trunnion is the correct upgrade path.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 1559 N and the pull force is 1402 N. At the maximum operating pressure of 0.9 MPa, push force reaches 2805 N. The pull force is lower because the 20 mm rod reduces the effective piston area on the return stroke.
Yes, if you need the 10 mm stroke adjustment feature. The SCJ63X50-10S shares the same 63 mm bore, PT1/4 ports, and mounting interfaces. Ensure the slightly longer body length of the SCJ fits your machine, and order the -S magnet option if your existing setup uses sensors on the SC.
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