Airtac SCJ32 Standard Cylinder SCJ32X450-30S
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X450-30S 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, 450mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke450 mm
- Stroke adjust-30 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X450-30S
The SCJ32X450-30S is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke, letting you fine-tune the stroke end by up to 30 mm without replacing the unit. Its 12 mm rod and PT1/8 ports deliver a push force of 402 N at 0.5 MPa, making it a precise actuator for mid-range linear tasks where commissioning tweaks or format changes are routine.
A built-in magnet (suffix -S) allows CMSG/DMSG/EMSG reed or solid-state sensors to clamp directly onto the tie-rod barrel for reliable end-of-stroke sensing. The body length A(SCJ) is 182 mm, and the adjustable air cushion decelerates the piston smoothly, protecting the end cap during high-cycle operation.
Airtac SCJ32 Standard Cylinder SCJ32X450-30S Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X450-30S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 450 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 SCJ32X450-30S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×450 | 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 SCJ32X450-30S Is Used
Commissioning Fine-Tuning
During initial machine setup, the 30 mm rear adjustment screw lets technicians precisely set the stroke end for grippers or pushers without swapping cylinders or machining hard stops.
Product Format Changeover
On packaging lines, quickly adjust the stroke of a diverter gate to match a new box width, minimizing downtime between production runs.
Wear Compensation
In high-cycle pressing or clamping fixtures, the adjustable stroke can be periodically tweaked to compensate for pad wear, maintaining consistent contact force without replacing the tooling.
Is the Airtac SCJ32 Standard Cylinder SCJ32X450-30S the Right Cylinder?
Choose the SCJ32 when you need to dial in a stroke end position on the fly—common during machine setup or product changeover. If 402 N of push force is marginal, stepping up to the SCJ40 provides 628 N at the same pressure. For fixed-stroke applications, the standard SC32 series eliminates the rear adjusting screw and is slightly shorter. This model is a direct replacement for an AirTAC SCJ32 with a nominal stroke of 450 mm, a 30 mm adjust range, PT ports, and a built-in magnet. For strokes of this length, ensure the rod is guided externally if significant side loads are present, or consider a guided cylinder to prevent rod bending.
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 SCJ32X450-30S FAQ
At 0.5 MPa, the push force is 402 N and the pull force is 345 N. The maximum push force at the 0.9 MPa operating limit is 724 N. Because it is a single-rod cylinder, push force is always greater than pull force.
No. The SCJ32X450-30S is a standard double-acting cylinder and will drift or drop if air pressure is exhausted or the valve is centered. The rear adjusting screw only sets the stroke end position—it is not a locking device. For load holding without live pressure, you must add an external rod lock or a pilot-operated check valve.
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