The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X200-75TC 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, 200mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X200-75 is an 80 mm bore double-acting single-rod cylinder offering a nominal 200 mm stroke that can be shortened by up to 75 mm via the rear-cap adjusting screw. This field-adjustable design lets commissioning engineers fine-tune the stroke end without removing the cylinder or adding external hard stops. With a 25 mm diameter piston rod and PT3/8 ports, it delivers a push force of 2513 N at 0.5 MPa and up to 4523 N at the maximum operating pressure of 0.9 MPa.
The cylinder body length (A dimension) is 239 mm, and it features a 28 mm adjustable air cushion to decelerate the piston smoothly near the stroke end. This model is configured with a centre trunnion (TC) mount, supplied with the TCM1 bracket, making it ideal for applications where the cylinder body needs to pivot. The default TPU seal operates reliably from -20 to +70 °C.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X200-75TC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 200 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. |
| ×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.
Quickly adjust the end position for different product sizes on packaging or filling lines without stopping production for a cylinder swap.
Fine-tune the gate opening stroke on a conveyor diverter to handle varying package widths, using the 75 mm adjustment range to set the precise angle.
Set a repeatable clamp depth or press stroke in a jig. The screw adjustment allows operators to compensate for part tolerance variations over a production run.
Choose the SCJ80X200-75 when you need a robust 80 mm bore actuator with the ability to dial in the stroke end position on the machine. If your force requirement is lower, the 63 mm bore SCJ series provides 1559 N of push force at 0.5 MPa; for heavier loads, stepping up to the 100 mm bore yields 3927 N at the same pressure. The 75 mm adjustment range is particularly useful for format changeovers or compensating for wear in the tooling.
For a direct replacement, match an AirTAC SCJ cylinder with an 80 mm bore, 200 mm nominal stroke, a 75 mm adjustment range, PT3/8 ports, and a TC centre trunnion mount. If your application does not require stroke adjustability, a fixed-stroke SC80X200 cylinder is a simpler alternative. For strokes of this length, ensure the rod is not subjected to high side loads; if lateral forces are present, consider adding an external linear guide.
Adjustable-stroke checklist
The push force is 2513 N at 0.5 MPa and 4523 N at 0.9 MPa. The pull force is slightly lower at 2268 N at 0.5 MPa due to the area of the 25 mm piston rod.
A screw in the rear cap acts as an internal end stop for the piston. Turning the screw changes the retracted end position, shortening the effective stroke by up to 75 mm from the nominal 200 mm. It does not adjust the cylinder's force or speed.
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