The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X160-40S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 40 mm range without swapping the cylinder. Ø40mm bore, 160mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ40X160-40S is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, letting you fine-tune the 160 mm nominal stroke by up to 40 mm via the rear-cap screw. With a 16 mm diameter piston rod and PT1/4 ports, it delivers 628 N of push force and 528 N of pull force at 0.5 MPa, making it a versatile mid-bore actuator for applications that need repeatable end-position tweaking without swapping the cylinder.
This model includes a built-in magnet (-S suffix), so CMSG, DMSG, or EMSG reed and solid-state sensors can be clamped directly onto the tie-rod barrel for non-contact position sensing. The body length A(SCJ) is 185 mm, and the adjustable air cushion decelerates the piston smoothly at both ends. Operating pressure ranges from 0.15 to 1.0 MPa, with a standard temperature span of -20 to +70 °C using the default TPU seals.
| Model | Airtac SCJ40 Standard Cylinder SCJ40X160-40S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 160 mm |
| Stroke adjustment | Up to 40 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. |
| ×160 | Nominal (maximum) stroke length in mm. |
| -40 | 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 setup, use the 40 mm rear adjustment to dial in the exact stroke end for a pusher or stop without re-plumbing or swapping cylinders.
On a packaging line, quickly adjust the stroke of a diverter gate to handle different box widths, reducing downtime between product runs.
In a clamping fixture, periodically advance the stroke end with the adjusting screw to compensate for pad wear, maintaining consistent clamp force.
Choose the SCJ40 bore when your load needs around 628 N of push force at standard plant air pressure. If you require more force, the SCJ50 delivers 982 N push at 0.5 MPa; for a lighter, more compact solution, the SCJ32 provides 402 N. The 40 mm adjustable range on this model is ideal for commissioning trials or format changeovers where the stroke end must be dialed in precisely after installation. If your application demands a fixed, non-adjustable stroke for maximum rigidity, the standard SC series is a better fit. For direct replacement, match an AirTAC SCJ cylinder with a 40 mm bore, 160 mm nominal stroke, a 40 mm adjust range, PT ports, basic mounting, and the -S magnet option.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 628 N and the pull force is 528 N. At the maximum operating pressure of 0.9 MPa, the push force reaches 1130 N. The pull force is always lower due to the single 16 mm piston rod reducing the effective piston area on the return stroke.
A screw in the rear cap limits how far the piston can retract. By turning the screw, you shorten the stroke end within a 0-40 mm range from the nominal 160 mm maximum. It adjusts the end position only and does not change the cylinder's force or speed.
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