The AirTAC Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X70-10S 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, 70mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X70-10S is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, delivering 1559 N of push force at 0.5 MPa. Its rear-cap adjusting screw provides a 10 mm fine-tuning range, letting you dial in the exact stop position without changing the cylinder—ideal for commissioning and format changeovers on medium-duty automation. The 20 mm rod and 28 mm air cushion ensure smooth deceleration.
This model includes a built-in magnet (-S suffix), allowing CMSG/DMSG/EMSG reed or solid-state sensors to clamp directly onto the tie-rod barrel for reliable end-of-stroke sensing. With a PT1/4 port, M16x1.5 rod thread, and a body length of 197 mm, it is a genuine AirTAC component built for consistent performance in filtered-air systems up to 1.0 MPa.
| Model | Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X70-10S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 70 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. |
| ×70 | 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 screw adjustment lets technicians quickly dial in the exact stroke end position during machine setup, eliminating the need for shims or external hard stops on assembly fixtures.
In packaging or labelling machines, the adjustable stroke allows operators to reposition the cylinder's end point for different product sizes without swapping the actuator, reducing downtime.
Over time, tooling or gripper fingers can wear. The SCJ's adjusting screw provides a quick way to take up mechanical play and restore the precise stroke end position, maintaining process quality.
Choose the SCJ63 bore when your application needs around 1559 N of push force at standard plant pressure; the 10 mm adjustment range covers fine end-stop tuning. If you require significantly more force, step up to the SCJ80 bore (2513 N push at 0.5 MPa). For a fixed, non-adjustable stroke, the standard SC63 cylinder is a simpler alternative. This SCJ63X70-10S directly replaces another AirTAC SCJ63 cylinder with a 70 mm nominal stroke, 10 mm adjust range, PT1/4 ports, basic mounting, and a magnet.
Adjustable-stroke checklist
At 0.5 MPa, it generates 1559 N pushing and 1402 N pulling. 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 always greater than the pull force.
Yes, if you need field-adjustable stroke. The SCJ63X70-10S matches the SC63 body length and mounting footprint but adds a rear adjusting screw. Ensure your application can accommodate the slightly longer rear cap and that the 10 mm adjustment range meets your needs.
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