The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X150-75S 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, 150mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X150-75S is an 80 mm bore double-acting single-rod cylinder with a rear adjusting screw that lets you fine-tune the stroke end position anywhere within a 75 mm range. At 0.5 MPa it delivers 2513 N push and 2268 N pull, placing it in the mid-heavy force class for clamping, pressing, and positioning tasks where the exact end-of-travel needs to be dialled in during commissioning or format changes.
This model includes a built-in magnet (suffix -S) so CMSG/DMSG/EMSG reed or solid-state sensors can be clamped directly onto the tie-rod barrel for non-contact position sensing. The 25 mm rod, PT3/8 ports, and 28 mm air cushion provide smooth deceleration, while the body length A(SCJ) of 239 mm accommodates the rear screw mechanism. Standard TPU seals suit ambient temperatures from -20 to +70 °C.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X150-75S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 150 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. |
| ×150 | 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 exact end-stop position on a new assembly line without machining spacers or swapping cylinders. The 75 mm adjustment range lets technicians compensate for stack-up tolerances during initial setup.
Adjust the push stroke for different box sizes on a packaging line. Operators can quickly reset the stroke end to match a new product format, cutting changeover time and reducing the need for multiple fixed-stroke cylinders.
In high-cycle clamping fixtures, the rear screw can be advanced to take up wear on gripper pads or tooling, maintaining consistent clamp force without disassembling the cylinder or adding shims.
Choose the SCJ80X150-75S when you need a 150 mm nominal stroke that can be shortened by up to 75 mm without swapping the cylinder. If your force requirement is lower, stepping down to a 63 mm bore reduces push force to 1559 N at 0.5 MPa; for higher force, the 100 mm bore provides 3927 N. A fixed-stroke SC cylinder is a better choice when the stroke never needs adjustment and you want a simpler, slightly shorter body.
For direct replacement, match an AirTAC SCJ adjustable-stroke cylinder of 80 mm bore, 150 mm nominal stroke, 75 mm adjust range, PT3/8 ports, basic mounting, and the -S magnet option. This model does not include a mounting bracket; if you need to pivot the cylinder, order the TC centre trunnion variant with the TCM1 bracket. At a 150 mm stroke, rod bending under side load is minimal, but for off-axis loads an external linear guide is still recommended.
Adjustable-stroke checklist
At 0.5 MPa the push force is 2513 N and the pull force is 2268 N. At the maximum operating pressure of 1.0 MPa, push force reaches 5026 N. Pull force is always lower because the 25 mm rod reduces the effective piston area on the return stroke.
Yes, if your existing cylinder is an AirTAC SCJ adjustable-stroke unit with an 80 mm bore, 150 mm nominal stroke, 75 mm adjust range, PT3/8 ports, basic mounting, and a magnet for sensors. The stroke and adjust range must match exactly for the rear screw to provide the same end-position adjustment.
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