The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X150-10S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 10 mm range without swapping the cylinder. Ø40mm bore, 150mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ40X150-10S is a double-acting, single-rod pneumatic cylinder that delivers 628 N of push force at 0.5 MPa, making it a solid mid-range actuator for industrial tasks. Its defining feature is a rear-cap adjusting screw that provides 10 mm of fine-tunable stroke-end control, allowing you to dial in the exact stopping position without swapping the cylinder or adding external hard stops.
This model includes a built-in magnet (-S suffix), so CMSG/DMSG/EMSG reed or solid-state sensors can be clamped directly onto the tie-rod barrel for reliable, non-contact position sensing. With a 16 mm piston rod, PT1/4 ports, and a 21 mm air cushion, it handles speeds of 30-800 mm/s and operates smoothly in standard -20 to +70°C environments.
| Model | Airtac SCJ40 Standard Cylinder SCJ40X150-10S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 150 mm |
| Stroke adjustment | Up to 10 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. |
| -10 | 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 10 mm adjustment screw lets technicians fine-tune the end-of-stroke position during initial machine setup, compensating for small assembly tolerances without re-machining mounting brackets.
In clamping or pressing fixtures, the adjustable stroke can be periodically tweaked to compensate for pad wear or material compression, maintaining consistent clamping force over the tool's lifetime.
Quickly adapt a pusher or diverter station to different product sizes by adjusting the cylinder's stroke end, minimizing downtime during packaging line format changes.
Choose the SCJ40 when you need field-adjustable stroke in a compact 40 mm bore. If your application requires more force, stepping up to the SCJ50 (982 N push at 0.5 MPa) is a direct path; for a lighter, more compact solution, the SCJ32 provides 402 N. The adjustable stroke is ideal for commissioning and format changes, but if your stroke is permanently fixed, a standard SC40 cylinder is a simpler, more cost-effective choice. For a true drop-in replacement, match the 40 mm bore, 150 mm nominal stroke, 10 mm adjust range, PT port thread, basic mounting, and the integrated magnet sensor option.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, this cylinder generates 628 N of push force and 528 N of pull force. The push force is higher because the single rod reduces the effective piston area on the return stroke. At its maximum 0.9 MPa operating pressure, the push force reaches 1130 N.
The adjustment is purely mechanical, using a screw in the rear end cap to set the piston's stopping point, effectively shortening the stroke by up to 10 mm. It is not a speed or force control. For speed regulation, you must use external flow control valves. The cylinder's speed range is 30-800 mm/s.
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