The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X200-75 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 75 mm range without swapping the cylinder. Ø50mm bore, 200mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ50X200-75 is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke, delivering 982 N of push force at 0.5 MPa. Its rear-cap adjusting screw provides up to 75 mm of stroke-end reduction, allowing precise fine-tuning of the 200 mm nominal stroke without swapping the cylinder. The 50 mm bore houses a 20 mm diameter piston rod and uses PT1/4 ports.
This tie-rod cylinder features an adjustable air cushion (21 mm long) for smooth deceleration and operates within a standard pressure range of 0.15–1.0 MPa. The SCJ design is ideal for applications where the end position must be dialed in during commissioning or changed for different product formats, offering a robust and repeatable mechanical stop.
| Model | Airtac SCJ50 Standard Cylinder SCJ50X200-75 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 200 mm |
| Stroke adjustment | Up to 75 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. |
| -75 | 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.
Dial in the precise end-stop position during initial machine setup. The 75 mm adjustment range on the 200 mm stroke allows engineers to compensate for tolerance stack-ups without machining custom stops.
Quickly adapt a pusher or stopper station for different box sizes on a packaging line. Operators can adjust the stroke end by up to 75 mm to handle a new product format without dismounting the cylinder.
Take up mechanical play in a clamping or pressing fixture over time. The adjustable screw allows for periodic stroke-end correction to maintain consistent clamping force as tooling or workpieces wear.
Choose the SCJ50X200-75 when you need to fine-tune the stroke end position on your machine. If 982 N of push force is insufficient, stepping up to a 63 mm bore provides 1559 N at the same pressure. For applications where the stroke is fixed and never needs adjustment, the standard SC50X200 is a more economical choice. A direct replacement must match the 50 mm bore, 200 mm nominal stroke, 75 mm adjustment range, PT port thread, and basic mounting. For strokes of 300 mm or more, evaluate side-loading on the 20 mm rod and consider an external guide or a guided cylinder to prevent rod bending.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 982 N and the pull force is 825 N. The maximum push force at the 0.9 MPa operating limit is 1767 N. Because it is a single-rod cylinder, the push force is greater than the pull force due to the area of the 20 mm rod.
It is a direct replacement for another AirTAC SCJ adjustable-stroke cylinder with the same 50 mm bore, 200 mm nominal stroke, and 75 mm adjustment range. Ensure the port thread (PT), mounting style, and magnet option match your existing unit. It is not dimensionally interchangeable with ISO 15552 cylinders.
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