Airtac SCJ32 Standard Cylinder SCJ32X450-40S
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X450-40S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 40 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-40 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X450-40S
The SCJ32X450-40S is a double-acting, single-rod tie-rod cylinder that lets you fine-tune the stroke end by up to 40 mm with a rear adjusting screw, without removing the cylinder from the machine. With a 12 mm rod and a push force of 724 N at 0.9 MPa, it handles mid-range positioning tasks where the exact stop point needs on-the-fly adjustment.
This model includes a built-in magnet, so CMSG/DMSG/EMSG sensors clamp directly onto the 182 mm body for reliable end-of-stroke detection. The 450 mm nominal stroke is well within the 1000 mm maximum for the 32 mm bore, and the adjustable air cushion decelerates the piston smoothly at both ends.
Airtac SCJ32 Standard Cylinder SCJ32X450-40S Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X450-40S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 450 mm |
| Stroke adjustment | Up to 40 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 SCJ32X450-40S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×450 | Nominal (maximum) stroke length in mm. |
| -40 | 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 SCJ32X450-40S Is Used
Commissioning & Setup
Ideal for machine builders who need to dial in the exact stroke end during initial setup and testing, saving hours compared to swapping fixed-stroke cylinders.
Product Changeovers
Quickly adjust the stop position for different product sizes on a packaging or sorting line without needing new tooling or mechanical stops.
Wear Compensation
Fine-tune the stroke end over the machine's life to compensate for wear on grippers or tooling, maintaining precise positioning without replacing parts.
Is the Airtac SCJ32 Standard Cylinder SCJ32X450-40S the Right Cylinder?
Choose this 32 mm bore when your application needs around 402 N of push force at 0.5 MPa. If you require more power, stepping up to the 40 mm bore provides 628 N of push at the same pressure. For applications where the stroke length is permanently fixed after commissioning, the standard SC series offers a more economical choice. This SCJ cylinder is a direct replacement for any AirTAC SCJ32 with a 450 mm nominal stroke and a 40 mm adjust range, provided the port thread (PT) and magnet option match.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-40)
- ✓ 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 SCJ32X450-40S FAQ
A screw in the rear cap limits how far the piston can retract. Turning the screw shortens the stroke end by up to 40 mm from the nominal 450 mm. It sets a mechanical stop, not a force or speed change.
No, like all standard double-acting cylinders, the piston will drift if pressure is lost or the valve is centered. To hold a load safely without live air pressure, you must add an external rod lock or a pilot-operated check valve.
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