Airtac SCJ32 Standard Cylinder SCJ32X400-30S
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X400-30S 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. 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 SCJ32X400-30S
The SCJ32X400-30S is a 32 mm bore double-acting, single-rod cylinder with a field-adjustable stroke end, letting you fine-tune the retract position by up to 30 mm without swapping the unit. It delivers 402 N of push force at 0.5 MPa and 724 N at the maximum operating pressure of 0.9 MPa, making it a capable actuator for light to medium automation tasks.
This model includes a built-in magnet (-S suffix), so CMSG, DMSG, or EMSG sensors clamp directly onto the tie-rod barrel for reliable end-of-stroke sensing. The 12 mm diameter piston rod uses an M10x1.25 thread, and the PT1/8 ports supply air filtered to 40 µm. With a 21 mm air cushion and a body length A of 182 mm, it fits neatly into compact machine layouts where stroke-end tuning is needed during commissioning or format changes.
Airtac SCJ32 Standard Cylinder SCJ32X400-30S Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X400-30S |
|---|---|
| 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 SCJ32X400-30S
| 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 SCJ32X400-30S Is Used
Commissioning & Fine-Tuning
The 30 mm rear-screw adjustment lets technicians dial in the exact retract stop during machine setup, eliminating the need to machine custom spacers or reposition hard stops.
Small-Part Diverting
Adjust the stroke end to match different lane widths on a conveyor. The built-in magnet provides clean sensor signals to the PLC for accurate part counting and divert confirmation.
Wear Take-Up in Clamping
In light clamping or pressing fixtures, use the screw to compensate for pad wear over time. The 724 N max push at 0.9 MPa provides consistent force without over-stroking the mechanism.
Is the Airtac SCJ32 Standard Cylinder SCJ32X400-30S the Right Cylinder?
Step up to the 40 mm bore SCJ if your load demands more than the 402 N push this 32 mm unit provides at 0.5 MPa—the SCJ40 offers 628 N. If your application never requires stroke adjustment, a fixed-stroke SC32X400 with the same mounting and magnet option is a simpler, cost-effective alternative. For a drop-in replacement, match the 32 mm bore, 400 mm nominal stroke, 30 mm adjust range, PT port thread, basic mounting, and the -S magnet suffix exactly.
At a 400 mm stroke, the slender 12 mm rod can deflect under off-centre loads. If side forces are present, add an external guide rail or switch to a guided cylinder to protect the rod bearing and piston seals from premature 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 SCJ32X400-30S FAQ
At 0.5 MPa air pressure, the cylinder produces 402 N pushing force and 345 N pulling force. At the maximum operating pressure of 1.0 MPa, the theoretical push force is 804 N. The pull force is always lower because the rod reduces the effective piston area on the return stroke.
The rear-cap adjusting screw sets the stroke END (retract) position, shortening the nominal 400 mm stroke by up to 30 mm. It does not adjust the extend position or the cylinder's force. To change the extend stop, you must use an external hard stop on the rod or machine tooling.
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