The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X150-50S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 50 mm range without swapping the cylinder. Ø80mm bore, 150mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X150-50S is an 80 mm bore double-acting single-rod cylinder with a field-adjustable stroke end, delivering a substantial 2513 N of push force at 0.5 MPa. Its rear-cap adjusting screw provides up to 50 mm of stroke-end reduction, letting you fine-tune the piston stop position without removing the cylinder or adding external hard stops. The 25 mm diameter rod and PT3/8 ports handle robust pneumatic circuits, while the 28 mm air cushion decelerates the piston smoothly at end of travel.
This model includes a built-in magnet (-S suffix), allowing CMSG, DMSG, or EMSG reed and solid-state sensors to clamp directly onto the tie-rod barrel for reliable, non-contact position sensing. With a body length A of 239 mm, it fits into spaces where an adjustable stroke is needed for commissioning trials or format changes. It's a genuine AirTAC component built for repeatable performance in industrial automation.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X150-50S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 150 mm |
| Stroke adjustment | Up to 50 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. |
| -50 | 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.
During machine commissioning, the 50 mm adjustable stroke lets technicians precisely set the end position for grippers, clamps, or stops without fabricating custom shims or brackets, saving hours of mechanical adjustment.
In high-cycle clamping fixtures, the adjustable screw can be periodically advanced to compensate for jaw or pad wear, maintaining consistent clamping force and part registration without replacing the cylinder or tooling.
On packaging or sorting lines handling multiple box sizes, operators can quickly adjust the cylinder's stroke end to match a new product width, enabling a fast, tool-less format changeover between production runs.
Choose the SCJ80X150-50S when you need the force of an 80 mm bore—2513 N push at 0.5 MPa—and the ability to dial in the stroke end by up to 50 mm on the machine. If your load requires less force, stepping down to a 63 mm bore SCJ reduces push force to 1559 N at 0.5 MPa; for higher force, the 100 mm bore SCJ delivers 3927 N. This adjustable-stroke model is ideal where the exact stop position must be set empirically during setup, but if your application demands a fixed, repeatable stroke with no field adjustment, a standard SC fixed-stroke cylinder is a simpler, more economical choice.
For a direct replacement, match an AirTAC SCJ cylinder with an 80 mm bore, 150 mm nominal stroke, a 50 mm adjustable range (-50), PT ports, basic mounting, and a built-in magnet (-S). At this 150 mm stroke, side-loading is typically manageable with proper alignment, but for strokes of 300 mm or more, always consider an external guide rail or a guided cylinder to protect the rod bearing from bending moments.
Adjustable-stroke checklist
Because it is a single-rod cylinder, push and pull forces differ. At 0.5 MPa, it delivers 2513 N push and 2268 N pull. At the maximum operating pressure of 0.9 MPa, push force reaches 4523 N. The adjustable stroke screw does not alter the cylinder's force output.
Yes, if you need the ability to fine-tune the stroke end. The SCJ80X150-50S matches the 80 mm bore and 150 mm nominal stroke of an SC80X150, but adds a 50 mm adjustable range. Ensure the slightly longer body length (239 mm for the SCJ) fits your mounting space and that you match the PT port thread and basic mounting style.
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