The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X60-50S 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, 60mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X60-50S is an 80 mm bore, double-acting, single-rod pneumatic cylinder that lets you fine-tune the stroke end position by up to 50 mm using a rear-cap adjusting screw. At 0.5 MPa, it delivers 2513 N of push force and 2268 N on the pull stroke, making it a strong candidate for medium-to-heavy linear tasks where the final stop point needs field adjustment.
This model includes a built-in magnet (-S suffix), so you can directly mount CMSG, DMSG, or EMSG reed and solid-state sensors along the tie-rod barrel for end-of-stroke detection. The 25 mm diameter piston rod, PT3/8 ports, and a 28 mm air cushion help manage deceleration, giving you a robust and configurable actuator for production machinery.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X60-50S |
|---|---|
| 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 range allows engineers to precisely dial in the actuator's end-stop position without swapping cylinders or machining external hard stops, saving significant commissioning time.
On a packaging line, the stroke can be quickly re-adjusted to accommodate different product widths or pallet sizes, enabling a fast format changeover by simply turning the rear screw.
In a clamping or pressing fixture, the adjustable stroke can be periodically shortened to compensate for wear on tooling or contact surfaces, maintaining consistent clamp force without reprogramming the machine.
Step up to the SCJ100X60-50 if your load requires more force—the 100 mm bore provides 3927 N push at 0.5 MPa. For a fixed-stroke application where no field adjustment is needed, the standard SC80X60 is a simpler, cost-effective alternative. If your load needs guided support to prevent rod rotation, consider an AirTAC TCL or TR series guided cylinder instead.
This SCJ80X60-50S is a direct replacement for any AirTAC SCJ80 cylinder with a 60 mm nominal stroke, a 50 mm adjust range, PT3/8 ports, and a built-in magnet. The rear screw shortens the stroke end, so it is not a substitute for a cylinder with a different total stroke length.
Adjustable-stroke checklist
A screw in the rear cap acts as an internal, adjustable end-stop for the piston. Turning the screw changes the retracted position of the piston rod, shortening the stroke by up to 50 mm from the nominal 60 mm maximum. It adjusts the stroke end only and does not change the cylinder's force or speed.
With standard 0.5 MPa air pressure, the push force is 2513 N. The pull force on the return stroke is lower at 2268 N because the 25 mm piston rod reduces the effective piston area. At the maximum operating pressure of 1.0 MPa, the theoretical push force is 5026 N.
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