The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X200-40STC 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. Ø50mm bore, 200mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The AirTAC SCJ50X200-40STC is a double-acting, single-rod pneumatic cylinder engineered for applications requiring precise, field-adjustable stroke end positioning. With a 50mm bore and a nominal 200mm stroke, the integrated rear adjusting screw provides a 40mm range to fine-tune the retracted length without changing the cylinder body, delivering 982 N of push force at 0.5 MPa.
This model features a built-in magnet for direct mounting of CMSG/DMSG/EMSG sensors and a centre trunnion (TC) mount, supplied with the TCM1 bracket for pivoting applications. The 20mm piston rod and PT1/4 port ensure robust, reliable actuation in dynamic industrial environments.
| Model | Airtac SCJ50 Standard Cylinder SCJ50X200-40STC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 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, 21 mm |
| Max stroke | Up to 1200 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 | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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. |
|---|---|
| 50 | 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.
Quickly adjust the retracted stop position by up to 40mm when switching between product sizes on packaging or assembly machines, eliminating manual end-stop repositioning.
Fine-tune the cylinder stroke end on a conveyor diverter to align perfectly with multiple lane widths, using the centre trunnion mount for smooth pivoting action.
Dial in the exact pressing depth or clamping force position with the 40mm screw adjustment, compensating for tooling wear without reprogramming the machine controller.
Select the SCJ50X200-40STC when your application demands a 200mm nominal stroke with the ability to shorten it by up to 40mm during commissioning or format changes. If 982 N of push force is insufficient, stepping up to the 63mm bore provides 1559 N at the same pressure. For fixed-stroke applications without the adjusting screw, the standard SC series is a direct alternative. To ensure a drop-in replacement, match the 50mm bore, 200mm nominal stroke, 40mm adjust range, PT port thread, centre trunnion mount, and integrated magnet. For strokes over 300mm, consider an external guide to protect the 20mm rod from side loads.
Adjustable-stroke checklist
At 0.5 MPa operating pressure, this double-acting cylinder provides 982 N of push force and 825 N of pull force on the retract stroke, due to the area of the 20mm piston rod.
The SCJ50X200-40STC has a rear adjusting screw that allows you to shorten the stroke end by up to 40mm in the field. This is ideal for fine-tuning position during setup or wear take-up, whereas a fixed-stroke SC cylinder requires physical modification or external stops to change its travel length.
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