The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X230-75S 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. Ø80mm bore, 230mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X230-75S is an 80 mm bore, double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end. A rear-cap adjusting screw provides up to 75 mm of stroke shortening, letting you fine-tune the end position from 155 mm to the full 230 mm nominal stroke without swapping the cylinder. At 0.5 MPa, it delivers 2513 N of push force and 2268 N on the pull stroke, making it a robust actuator for mid-range industrial tasks.
This model includes a built-in magnet (-S suffix), so CMSG/DMSG/EMSG reed or solid-state sensors clamp directly onto the tie-rod barrel for non-contact position sensing. The 25 mm diameter piston rod, PT3/8 ports, and 28 mm air cushion work together to handle dynamic loads smoothly. The SCJ body length A is 239 mm, slightly longer than the fixed-stroke SC version to house the adjusting mechanism.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X230-75S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 230 mm |
| Stroke adjustment | Up to 75 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT3/8 |
| Rod thread | M20×1.5 |
| 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 | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 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. |
|---|---|
| 80 | Bore size in mm. |
| ×230 | 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.
The 75 mm adjustment range allows technicians to precisely set a machine's end stop during initial setup or after a format change, eliminating the need to stock multiple fixed-stroke cylinders for trial-and-error positioning.
Used as a pneumatic stop gate on a conveyor, the SCJ80X230-75S can be quickly adjusted to accommodate different product sizes, with the built-in magnet sensor confirming the gate's position for the control system.
In a clamping or pressing fixture, the adjustable stroke end can be periodically advanced to compensate for tooling or pad wear, maintaining consistent clamping force without reprogramming or mechanical shimming.
Choose the SCJ80X230-75S when you need to dial in a stroke end position during commissioning or changeover, with the 75 mm adjustment range covering most mid-stroke tuning needs. If 2513 N of push force is insufficient, stepping up to the 100 mm bore SCJ100 series provides 3927 N at the same 0.5 MPa pressure; if space is tight, the 63 mm bore SCJ63 delivers 1559 N. For a fixed, non-adjustable stroke, the standard SC80 cylinder is a simpler, slightly more compact alternative.
For a direct replacement, match the 80 mm bore, 230 mm nominal stroke, 75 mm adjust range (-75), PT port thread, and the built-in magnet (-S). This is a basic mount model, but you can add an FA front flange, LB foot mount, or TC centre trunnion using the F-SC80 accessory series. At a 230 mm stroke, ensure the rod is adequately supported against side loads; if the application imposes significant lateral force, pair the cylinder with an external guide rail.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, it produces 2513 N of push force and 2268 N of pull force. The maximum push force at 0.9 MPa is 4523 N. The push force is higher than the pull force because the piston rod reduces the effective area on the return side.
It can be a functional replacement if you need the adjustable stroke feature, but the SCJ body is slightly longer (239 mm A-length) to house the rear adjusting screw. You must match the 80 mm bore, PT3/8 ports, and ensure the 75 mm adjustment range covers your stroke needs. The mounting accessories (FA, LB, TC) from the SC series are compatible.
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