The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X200-40S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 40 mm range without swapping the cylinder. Ø63mm bore, 200mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X200-40S is a double-acting, single-rod pneumatic cylinder that puts fine stroke-end tuning directly in the rear cap. With a 40 mm field-adjustable range, you can dial in the exact stopping position for a 200 mm nominal stroke without swapping cylinders or adding external hard stops—ideal for commissioning trials and format changeovers on packaging lines.
This 63 mm bore model generates 1559 N of push force at 0.5 MPa and 2805 N at the maximum operating pressure of 0.9 MPa. It features a 20 mm piston rod, PT1/4 ports, and a 28 mm air cushion for smooth deceleration. The built-in magnet (S suffix) lets you clamp CMSG/DMSG/EMSG sensors directly onto the tie-rod barrel for reliable end-of-stroke sensing.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X200-40S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 200 mm |
| Stroke adjustment | Up to 40 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. |
| ×200 | Nominal (maximum) stroke length in mm. |
| -40 | 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 40 mm rear adjusting screw lets technicians precisely set the retract stroke end on a pick-and-place unit, compensating for minor fixture variations without reprogramming the controller.
Quickly adjust the stroke end for different product sizes on a case packer. The built-in magnet provides sensor feedback to confirm the new position is reached every cycle.
On a material stop gate, the adjustable stroke can be periodically shortened to compensate for mechanical wear on the gate pad, maintaining a tight seal without replacing the actuator.
Choose the SCJ63X200-40S when you need a 63 mm bore force class and the ability to adjust stroke end by up to 40 mm on the machine. If your application requires more force, stepping up to an 80 mm bore delivers 2513 N of push at 0.5 MPa; if you need less, the 50 mm bore provides 982 N. For fixed-stroke applications where no field adjustment is needed, the standard SC series is a simpler, cost-effective alternative.
This model is a direct replacement for an existing AirTAC SCJ63X200-40S cylinder with a magnet, PT ports, and basic mounting. For a 200 mm stroke, always check for side-loading on the rod; if the load is not perfectly guided, add an external guide rail or consider a guided cylinder to prevent rod bending and premature seal wear.
Adjustable-stroke checklist
At 0.5 MPa, the cylinder delivers 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 design, the pull force is always lower due to the rod area.
You can replace an AirTAC SCJ63X200-40S directly. If you are upgrading from a fixed-stroke SC63X200, the SCJ adds a 40 mm adjustable stroke-end range but shares the same mounting footprint and port size. Ensure your machine can accommodate the slightly longer rear cap that houses the adjusting screw.
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