The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X100-50S 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, 100mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X100-50S is a double-acting, single-rod pneumatic cylinder with a 50 mm field-adjustable stroke range, allowing you to fine-tune the stroke end position without removing the cylinder from the machine. With a 63 mm bore, it delivers 1559 N of push force at 0.5 MPa and up to 2805 N at 0.9 MPa, making it a robust choice for medium-duty positioning and clamping tasks.
This model features a built-in magnet (-S suffix), enabling direct mounting of CMSG/DMSG/EMSG sensors for precise end-of-stroke detection. The 20 mm diameter piston rod, PT1/4 ports, and 28 mm air cushion provide reliable deceleration, while the tie-rod construction ensures easy maintenance. The body length A(SCJ) is 197 mm.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X100-50S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 100 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. |
| ×100 | 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.
The 50 mm adjustable stroke lets technicians dial in the exact end position during machine commissioning, compensating for assembly tolerances without fabricating custom stops.
Quickly adapt the cylinder stroke for different product sizes on a packaging line. The rear adjusting screw allows a single cylinder to handle multiple formats, reducing changeover time.
In clamping or pressing fixtures, the adjustable stroke can be used to take up mechanical wear on tooling or workpieces over time, maintaining consistent clamping force without shims.
Choose the SCJ63X100-50S when your application requires a 100 mm maximum stroke with the flexibility to reduce it by up to 50 mm for commissioning or format changes. If you need more 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 (982 N) may suffice. For a direct replacement, match the 63 mm bore, 100 mm nominal stroke, 50 mm adjust range, PT thread, and built-in magnet. If your stroke is fixed and never needs adjustment, the standard SC63X100-S is a simpler, more economical alternative.
Adjustable-stroke checklist
At the standard operating pressure of 0.5 MPa, this 63 mm bore cylinder provides 1559 N of push force and 1402 N of pull force. The maximum operating pressure is 1.0 MPa, yielding a theoretical push force of 2805 N.
Yes, the SCJ63X100-50S is a direct dimensional replacement for the SC63X100-S, provided the extra length of the rear adjusting screw mechanism is accommodated. It offers the same bore, rod, and porting, with the added benefit of a 50 mm adjustable stroke range.
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