The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X160-30S 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. Ø40mm bore, 160mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ40X160-30S is a double-acting single-rod pneumatic cylinder that puts field-adjustable stroke control directly on the machine. Its rear-cap adjusting screw lets you shorten the stroke end by up to 30 mm without removing the cylinder, making it ideal for commissioning trials, format changeovers, and fine-tuning end positions on the fly. The built-in magnet allows CMSG, DMSG, or EMSG sensors to clamp directly onto the tie-rod barrel for reliable position feedback.
With a 40 mm bore and 16 mm piston rod, this cylinder delivers 628 N of push force and 528 N of pull force at 0.5 MPa. At the maximum operating pressure of 0.9 MPa, push force reaches 1130 N. The adjustable air cushion (21 mm length) decelerates the piston smoothly, while the PT1/4 port and M12x1.25 rod thread keep connections standard. The body length A(SCJ) is 185 mm, slightly longer than the fixed-stroke SC equivalent to accommodate the adjusting mechanism.
| Model | Airtac SCJ40 Standard Cylinder SCJ40X160-30S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 160 mm |
| Stroke adjustment | Up to 30 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. |
| -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.
Fine-tune the stroke end position during machine bring-up without removing the cylinder. The 30 mm adjustment range lets commissioning engineers quickly dial in the exact stopping point for grippers, pushers, or stops.
Packaging and assembly lines that run multiple product sizes benefit from tool-free stroke adjustment. Operators can reset the stroke end to match a new box height or part width in seconds using the rear screw.
The built-in magnet works with CMSG/DMSG/EMSG reed and solid-state sensors, enabling mid-stroke or end-of-stroke position confirmation. Combine the adjustable screw with a sensor to create a flexible, verified stop point.
Choose the SCJ40 when you need to dial in a stroke end position within a 30 mm window without swapping cylinders or adding external hard stops. If your application demands more force, step up to the SCJ50 bore, which provides 982 N of push force at 0.5 MPa. For applications that do not require stroke adjustment, the fixed-stroke SC series offers a simpler, more compact alternative. This model is a direct replacement for any AirTAC SCJ40X160-30S with PT ports, basic mounting, and a built-in magnet. At 160 mm nominal stroke, rod deflection is minimal under axial loads, but if the application introduces significant side forces, consider adding an external linear guide.
Adjustable-stroke checklist
At 0.5 MPa, it generates 628 N pushing and 528 N pulling. At the maximum operating pressure of 0.9 MPa, push force increases to 1130 N. Because it is a single-rod cylinder, push force is always greater than pull force due to the rod area on the return side.
Yes, provided the additional body length (A=185 mm for SCJ) fits your mounting envelope and you need the 30 mm adjustable stroke feature. The port size (PT1/4), rod thread (M12x1.25), and mounting patterns are identical. Ensure you order the same magnet option (-S) if your existing setup uses sensors.
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