The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X150-30S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 30 mm range without swapping the cylinder. Ø80mm bore, 150mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X150-30S is an 80 mm bore double-acting single-rod cylinder that delivers 2513 N of push force at 0.5 MPa, making it a solid choice for medium-duty positioning tasks. Its rear-cap adjusting screw provides up to 30 mm of stroke-end reduction, allowing operators to fine-tune the piston stop point during commissioning or changeovers without removing the cylinder from the machine.
A built-in magnet is factory-installed, so CMSG/DMSG/EMSG solid-state or reed sensors clamp directly onto the tie-rod barrel for reliable end-of-stroke detection. The cylinder uses a 25 mm diameter piston rod, PT3/8 ports, and a 28 mm air cushion to decelerate the load smoothly. Body length A(SCJ) is 239 mm, slightly longer than the fixed-stroke SC version to accommodate the adjusting mechanism.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X150-30S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 150 mm |
| Stroke adjustment | Up to 30 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. |
| -30 | 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 30 mm adjustment screw lets technicians dial in the exact stroke end position during machine commissioning, compensating for stack-up tolerances without fabricating custom hard stops.
On packaging or assembly lines, operators can quickly adjust the stroke to accommodate different product sizes or formats, minimizing downtime between batches.
In clamping or pressing fixtures, the stroke can be incrementally extended over time to compensate for pad or tooling wear, maintaining consistent contact force without replacing the cylinder.
Step up to the 100 mm bore SCJ if your application needs more force—the SCJ100 provides 3927 N push at 0.5 MPa. For tasks that don't require field adjustment, a fixed-stroke SC80 cylinder is a simpler, more cost-effective alternative. If side loads are present, pair this cylinder with an external guide rail to protect the rod bearing, as the 150 mm stroke is long enough to risk rod deflection under off-centre loads.
This model is a direct replacement for any AirTAC SCJ80X150-30S with PT ports, basic mounting, and a magnet. When swapping, match the 80 mm bore, 150 mm nominal stroke, 30 mm adjustment range, and the -S magnet suffix to retain sensor compatibility. For pivoting applications, consider the TC centre trunnion mount (F-SC80TC) which ships with the TCM1 bracket.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 2513 N and the pull force is 2268 N (reduced by the 25 mm rod area). At the maximum operating pressure of 0.9 MPa, push force reaches 4523 N. The adjusting screw changes only the stroke end position, not the force output.
Yes, provided your existing cylinder also has the -S magnet option. The built-in magnet on the SCJ80X150-30S is compatible with AirTAC CMSG, DMSG, and EMSG series sensors, which mount directly onto the cylinder's tie rods. A non-magnet SCJ would require a different sensing solution.
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