Airtac SCJ40 Standard Cylinder SCJ40X160-30
The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X160-30 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.
- BoreØ40 mm
- Nominal stroke160 mm
- Stroke adjust-30 mm
- Port sizePT1/4
- Rod threadM12×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ40 Standard Cylinder SCJ40X160-30
The SCJ40X160-30 is a 40 mm bore double-acting, single-rod pneumatic cylinder with a 30 mm rear-end adjustable stroke. This field-adjustable feature lets you fine-tune the stroke end position during commissioning or changeovers, with a push force of 628 N at 0.5 MPa and a pull force of 528 N, making it a versatile actuator for mid-range tasks.
Its 16 mm diameter piston rod and PT1/4 port provide a robust connection, while the 21 mm air cushion at each end decelerates the piston smoothly. The body length A(SCJ) is 185 mm, and the maximum standard stroke for this bore is 1200 mm, so this 160 mm unit operates well within standard limits.
Airtac SCJ40 Standard Cylinder SCJ40X160-30 Technical Specifications
| Model | Airtac SCJ40 Standard Cylinder SCJ40X160-30 |
|---|---|
| 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.
Theoretical Output Force (Ø40mm)
| 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.
Model Code: Airtac SCJ40 Standard Cylinder SCJ40X160-30
| 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.
Where the Airtac SCJ40 Standard Cylinder SCJ40X160-30 Is Used
Commissioning & Setup
Dial in the exact stroke end position during machine commissioning without replacing the cylinder or fabricating custom stops, saving setup time on new automation lines.
Product Format Changeover
Quickly adjust the stroke for different product sizes on packaging or sorting lines, reducing downtime between batches with a simple screw adjustment.
Wear Compensation
Take up mechanical slack or wear in tooling over time by fine-tuning the stroke end, maintaining consistent part contact without re-tooling the entire station.
Is the Airtac SCJ40 Standard Cylinder SCJ40X160-30 the Right Cylinder?
Choose the SCJ40X160-30 when you need to dial in a precise stroke end on a 40 mm bore platform without adding external hard stops. For higher force, step up to the 50 mm bore SCJ series, which delivers 982 N of push at 0.5 MPa. If your application requires a fixed, non-adjustable stroke, the standard SC40X160 is a simpler alternative.
For a direct replacement, match the 40 mm bore, 160 mm nominal stroke, 30 mm adjust range, PT port thread, and basic mounting. If you need position sensing, the -S magnet option allows CMSG/DMSG sensors to be clamped directly to the barrel.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-30)
- ✓ Required force at your working pressure
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Set the rear adjusting screw, then lock it before running.
- check Adjust end cushion screws for smooth stops.
- check Use SCJ mounting accessory (FA / LB / TC / TCM1).
- check Installation by qualified personnel per AirTAC docs.
Airtac SCJ40 Standard Cylinder SCJ40X160-30 FAQ
At 0.5 MPa, it delivers 628 N of push force and 528 N of pull force. The maximum push force at the 0.9 MPa operating limit is 1130 N. Because it is a single-rod cylinder, the push force is greater than the pull force due to the rod area.
No, the rear adjusting screw only sets the stroke end position. It does not lock the piston or hold a load. If the load must be held without air pressure, you need an external mechanical lock, a rod brake, or a pilot-operated check valve in the circuit.
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