The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X800-100STC is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 100 mm range without swapping the cylinder. Ø80mm bore, 800mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X800-100STC is an 80 mm bore, double-acting, single-rod pneumatic cylinder that puts field-adjustable stroke control directly on the machine. Its rear-cap adjusting screw provides up to 100 mm of stroke-end reduction, so you can fine-tune the 800 mm nominal stroke for commissioning trials, format changeovers, or wear take-up without swapping the cylinder or adding external hard stops. The 25 mm diameter rod and PT3/8 ports handle flows that deliver 2513 N of push force at 0.5 MPa, rising to 4523 N at the 0.9 MPa maximum operating pressure.
This model is factory-configured with a built-in magnet (-S) and a centre trunnion pivot mount (TC), supplied with the TCM1 bracket under part code F-SC80TC. The magnet lets CMSG/DMSG/EMSG reed or solid-state sensors clamp directly to the tie-rod barrel for non-contact position sensing along the full stroke. The TC mount allows the cylinder to swing through an arc, absorbing misalignment in pivoting applications. With a 28 mm air cushion and a body length A(SCJ) of 239 mm, it provides controlled deceleration at each stroke end.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X800-100STC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 800 mm |
| Stroke adjustment | Up to 100 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. |
| ×800 | Nominal (maximum) stroke length in mm. |
| -100 | 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.
The 100 mm adjusting screw lets operators dial in the exact stroke end position on a packaging machine's pusher arm, compensating for product thickness variations without stopping production to change mechanical stops.
On a conveyor sortation line, the SCJ80X800-100STC with its centre trunnion mount can pivot a diverter gate. The adjustable stroke allows the gate's open angle to be set precisely for different package widths.
In a CNC welding fixture, the adjustable stroke compensates for slight variations in workpiece dimensions batch-to-batch, ensuring consistent clamping force without over-stroking and damaging the part.
Choose the SCJ80 when your application needs around 2500 N of push force at standard plant air pressure; the 80 mm bore sits between the 63 mm bore (1559 N push) and the 100 mm bore (3927 N push). If your 800 mm stroke does not require field adjustment, the fixed-stroke SC80X800-S is a simpler, slightly shorter option. For vertical or high-side-load tasks at this stroke length, consider an external guide rail or a guided cylinder to protect the 25 mm rod from bending. This SCJ80X800-100STC is a direct replacement for an identical AirTAC SCJ adjustable-stroke cylinder: 80 mm bore, 800 mm nominal stroke, -100 adjust range, PT ports, centre trunnion mount, and magnetic piston.
Adjustable-stroke checklist
Because it is a single-rod cylinder, push and pull forces differ. At 0.5 MPa, the push force is 2513 N and the pull force is 2268 N (the rod area reduces the piston area on the return stroke). At the maximum operating pressure of 0.9 MPa, the push force reaches 4523 N.
Yes, provided your old cylinder was an AirTAC SCJ with an 80 mm bore, 800 mm nominal stroke, a -100 mm adjustable range, and PT ports. The -S suffix adds a magnetic piston for sensors, and the TC suffix specifies the centre trunnion mount (F-SC80TC bracket included). The mounting dimensions and port locations are identical to any other SCJ80-TC configuration.
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