Airtac SCJ32 Standard Cylinder SCJ32X400-30
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X400-30 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. Ø32mm bore, 400mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke400 mm
- Stroke adjust-30 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X400-30
The SCJ32X400-30 is a double-acting, single-rod pneumatic cylinder from AirTAC, featuring a rear-cap adjusting screw that provides a 30 mm field-adjustable stroke range. This allows precise end-position tuning without replacing the cylinder, making it ideal for commissioning and fine-tuning automated processes. With a 32 mm bore and 12 mm rod, it delivers 402 N of push force and 345 N of pull force at 0.5 MPa, suitable for light-duty clamping and positioning tasks.
The cylinder body length A(SCJ) is 182 mm, and it uses PT1/8 ports with an M10x1.25 rod thread. It includes an adjustable air cushion (21 mm) for smooth deceleration. The standard stroke for this bore is up to 1000 mm, so the 400 mm nominal stroke is well within standard limits, ensuring rapid availability.
Airtac SCJ32 Standard Cylinder SCJ32X400-30 Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X400-30 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 400 mm |
| Stroke adjustment | Up to 30 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/8 |
| Rod thread | M10×1.25 |
| 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 1000 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 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 SCJ32 Standard Cylinder SCJ32X400-30
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×400 | 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 SCJ32 Standard Cylinder SCJ32X400-30 Is Used
Commissioning & Setup
The 30 mm adjustable stroke allows technicians to quickly fine-tune the actuator's end stop during machine commissioning, eliminating the need to swap cylinders or fabricate shims for small positional adjustments.
Wear Compensation
In clamping or pressing fixtures, the stroke can be gradually extended over time to compensate for wear on tooling or workpiece contact surfaces, maintaining consistent clamping force without manual intervention.
Product Changeover
For packaging or sorting lines handling different product sizes, the rear screw allows operators to quickly adjust the cylinder's push stroke to match a new format, reducing changeover time and improving line flexibility.
Is the Airtac SCJ32 Standard Cylinder SCJ32X400-30 the Right Cylinder?
This 32 mm bore model is ideal when your application requires a compact cylinder with a moderate stroke and the ability to dial in the end position. If you need more force, consider stepping up to the 40 mm bore SCJ, which provides 628 N of push force at 0.5 MPa. For applications where the stroke is fixed and never needs adjustment, the standard SC32X400 fixed-stroke cylinder is a simpler, more cost-effective alternative. A direct replacement must match the SCJ32 bore, 400 mm nominal stroke, 30 mm adjust range, PT port thread, and basic mounting. For strokes of 300 mm or more, ensure the rod is not subjected to high side loads; if it is, use an external guide rail or switch to a guided cylinder to prevent rod bending and premature seal wear.
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 SCJ32 Standard Cylinder SCJ32X400-30 FAQ
At the standard operating pressure of 0.5 MPa, this cylinder provides 402 N of push force and 345 N of pull force. The push force is higher because the rod reduces the effective piston area on the pull side. At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 804 N.
Yes, the SCJ32X400-30 can replace an SC32X400, but it will add the adjustable stroke feature. The mounting footprint and port locations are the same. Ensure the extra length of the adjusting screw housing at the rear cap is accounted for in your machine layout. The body length A(SCJ) is 182 mm, which is slightly longer than the fixed-stroke SC version.
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