The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X150-100S 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 SCJ40X150-100S is a 40 mm bore double-acting single-rod pneumatic cylinder with a field-adjustable stroke, offering 628 N of push force at 0.5 MPa. Its rear-cap adjusting screw provides a 100 mm adjustment range, letting you fine-tune the stroke end position from 150 mm down to 50 mm without swapping the cylinder. The 16 mm diameter rod and PT1/4 port supply ample flow for dynamic applications, while the 21 mm air cushion at each end decelerates the piston smoothly.
This model includes a built-in magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors on the barrel for precise end-of-stroke or mid-stroke position feedback. The standard TPU seal delivers reliable performance from -20 to +70 °C. With a body length of 185 mm, it is a compact solution for commissioning trials, format changeovers, and any task where the stroke needs regular, tool-free adjustment on the machine.
| Model | Airtac SCJ40 Standard Cylinder SCJ40X150-100S |
|---|---|
| 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.
The 100 mm adjustment range allows engineers to quickly dial in the exact stroke end position during machine commissioning without cutting guide rails or fabricating custom hard stops.
On a packaging line, the stroke can be shortened to handle a new box size in minutes. The built-in magnet sensor confirms the new retracted position, enabling a fast, repeatable changeover process.
In clamping or pressing fixtures, the adjustable screw can be turned to take up mechanical wear on tooling or contact pads over time, maintaining consistent clamping force without replacing the actuator.
Select the SCJ40X150-100S when your application requires a 40 mm bore with a nominal 150 mm stroke that can be adjusted down by up to 100 mm. If you need more push force, stepping up to a 50 mm bore SCJ provides 982 N at 0.5 MPa. For applications where the stroke is fixed and will never change, a standard SC fixed-stroke cylinder is a simpler, more economical choice. If the 150 mm stroke creates a risk of rod bending under side loads, consider adding an external guide rail or switching to a guided cylinder assembly.
For direct replacement, match an AirTAC SCJ cylinder with a 40 mm bore, a 150 mm nominal stroke, a 100 mm adjustment range (-100), a PT port, and the -S magnet option. This cylinder uses the basic mounting style, so it is secured by the tie-rod end nuts or the standard accessory feet if needed.
Adjustable-stroke checklist
As a single-rod cylinder, push and pull forces differ. At the standard 0.5 MPa operating pressure, the push force is 628 N and the pull force is 528 N. At the maximum 0.9 MPa pressure, the push force reaches 1130 N. The adjustable stroke screw does not alter these force values.
A fixed-stroke SC cylinder will fit the same mounting and port connections, but you will lose the ability to fine-tune the stroke end on the machine. To retain the adjustment feature, the replacement must be an SCJ model with a matching 40 mm bore, 150 mm nominal stroke, and 100 mm adjustment range (-100).
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