The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X60-50 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, 60mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X60-50 is an 80 mm bore, double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end. A rear-cap screw provides up to 50 mm of adjustment, letting you dial in the exact stroke position from 10 mm up to the nominal 60 mm without changing the cylinder. At 0.5 MPa, it delivers 2513 N of push force and 2268 N on the pull stroke, driven through a 25 mm diameter piston rod.
This tie-rod cylinder uses PT3/8 ports and an M20x1.5 rod thread for secure tooling attachment. The adjustable air cushion, with a 28 mm cushion length, decelerates the piston smoothly at both ends. With a body length of 239 mm, this genuine AirTAC SCJ unit is a robust solution for applications where the stroke end position must be precisely set and easily modified during commissioning or changeover.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X60-50 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 60 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. |
| ×60 | 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 setup, the 50 mm adjustment screw allows engineers to precisely dial in the actuator's end-stop position without remachining brackets or swapping cylinders, saving hours of mechanical work.
On packaging or assembly lines, quickly adjust the stroke end to accommodate different product sizes or box formats. The SCJ80X60-50 eliminates the need for multiple fixed-stroke cylinders for each product variant.
In clamping or pressing fixtures, the adjustable stroke can be extended over time to compensate for tooling wear or material compression set, maintaining consistent clamp force without replacing the actuator.
Choose the SCJ80 when your application needs around 2500 N of push force at standard plant air pressure and you require the ability to fine-tune the stroke end position on the machine. If you need more force, stepping up to the 100 mm bore provides 3927 N of push at 0.5 MPa. For applications where the stroke is fixed and will never need field adjustment, the standard SC80 fixed-stroke cylinder is a simpler, more cost-effective alternative.
To replace this cylinder, match an SCJ80 with a 60 mm nominal stroke, a 50 mm adjustment range, PT ports, and basic mounting. If you add a magnet option (-S suffix), you can clamp CMSG or DMSG sensors directly to the barrel for electrical position feedback. For strokes longer than 300 mm in this bore, consider an external guide rail to protect the 25 mm rod from side-load bending.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 2513 N and the pull force is 2268 N. The pull force is lower because the 25 mm rod reduces the effective piston area on the return stroke. At the maximum operating pressure of 0.9 MPa, the push force reaches 4523 N.
A rear-cap adjusting screw sets the stroke end position within a 50 mm range. You pick the SCJ when the exact stroke length needs to be fine-tuned on the machine, such as during commissioning, for format changes, or to take up wear. If the stroke is a fixed, known value that will never change, the standard SC fixed-stroke cylinder is the correct choice.
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