The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X150-100 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. Ø40mm bore, 150mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ40X150-100 is a 40 mm bore, double-acting single-rod cylinder that lets you fine-tune the stroke end position by up to 100 mm using the rear-cap adjusting screw. With a nominal 150 mm stroke and a 16 mm piston rod, it delivers 628 N of push force at 0.5 MPa, making it a practical choice for mid-range pneumatic tasks where the stroke must be dialled in precisely on the machine.
This adjustable-stroke design uses a tie-rod construction and comes with PT1/4 ports and an M12x1.25 rod thread. The built-in variable air cushion (21 mm length) decelerates the piston smoothly, while the body length A(SCJ) of 185 mm keeps the package compact. The 100 mm adjustment range is ideal for commissioning trials, format changeovers, or taking up mechanical wear without replacing the cylinder or adding external hard stops.
| Model | Airtac SCJ40 Standard Cylinder SCJ40X150-100 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 150 mm |
| Stroke adjustment | Up to 100 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/4 |
| Rod thread | M12×1.25 |
| 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, 21 mm |
| Max stroke | Up to 1200 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 | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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. |
|---|---|
| 40 | Bore size in mm. |
| ×150 | 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.
During machine build, the 100 mm adjustment screw lets technicians fine-tune the end stop without cutting brackets or repositioning sensors, speeding up the final setup.
On a packaging line, operators can quickly dial in a new stroke end for a different box size, reducing downtime between product runs.
As tooling or gripper pads wear down over time, the rear screw can be advanced to restore the precise end position without replacing the actuator.
Step up to a 50 mm bore SCJ if your application needs more force—the SCJ50 provides 982 N push at 0.5 MPa. If the stroke length is fixed and never needs field adjustment, the standard SC40 fixed-stroke cylinder offers the same force and mounting footprint without the rear adjuster. For a direct replacement, match the 40 mm bore, 150 mm nominal stroke, 100 mm adjustment range (-100), PT1/4 ports, and the basic mounting style. Because this is a 150 mm stroke, side-loading is generally minimal, but always align the rod with the load axis; if the load is guided externally, the rod bearing will see less wear.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 628 N and the pull force is 528 N (due to the 16 mm rod area). At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 128 kgf.
Yes, if you need the ability to adjust the stroke end. The SCJ40X150-100 matches the SC40 bore, port size, and mounting accessories, but adds a rear adjusting screw with a 100 mm range. Ensure the slightly longer body length fits your machine envelope.
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