Airtac SCJ32 Standard Cylinder SCJ32X450-40
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X450-40 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 SCJ32X450-40
The SCJ32X450-40 is a 32 mm bore, double-acting, single-rod pneumatic cylinder with a field-adjustable stroke. A rear-cap adjusting screw provides up to 40 mm of stroke-end reduction, letting you fine-tune the 450 mm nominal stroke without swapping the cylinder. This model delivers 402 N of push force at 0.5 MPa and uses a 12 mm diameter piston rod with an M10x1.25 rod thread.
The cylinder body length A is 182 mm and it features a 21 mm air cushion for smooth deceleration. With PT1/8 ports and a standard TPU seal, it operates from -20 to +70 °C. This adjustable-stroke design is ideal for commissioning, format changeovers, and wear take-up on packaging or assembly machinery where the end position needs precise, repeatable field setting.
Airtac SCJ32 Standard Cylinder SCJ32X450-40 Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X450-40 |
|---|---|
| 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 SCJ32X450-40
| 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 SCJ32X450-40 Is Used
Commissioning & Setup
The 40 mm adjustment screw allows technicians to dial in the exact stroke end position during initial machine commissioning, compensating for assembly tolerances without needing to cut or replace the cylinder.
Packaging Format Changes
Quickly adjust the stroke end to accommodate different box or product sizes on a packaging line. The 450 mm nominal stroke with 40 mm of adjustment provides flexibility for running multiple SKUs on the same machine.
Wear Compensation
Over time, tooling or gripper pads can wear, changing the effective stroke. The rear adjusting screw on this SCJ32 cylinder lets operators easily take up this wear, restoring the correct end position without disassembly.
Is the Airtac SCJ32 Standard Cylinder SCJ32X450-40 the Right Cylinder?
Choose the SCJ32X450-40 when your application requires a 32 mm bore with a stroke near 450 mm that can be shortened by up to 40 mm in the field. If you need more force, step up to the 40 mm bore SCJ40 series, which provides 628 N of push at 0.5 MPa. For a fixed, non-adjustable stroke, the standard SC32 series is a simpler alternative. If the load must be guided against side forces at this 450 mm stroke length, consider adding an external guide rail or switching to a guided cylinder.
For direct replacement, match an AirTAC SCJ32 cylinder with a 450 mm nominal stroke, a 40 mm adjustment range, PT1/8 ports, and a basic mounting configuration. The SCJ mounting system supports FA front flange, LB foot, and TC centre trunnion accessories (no FB or CA/CB types), using the F-SC32 mounting code pattern.
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 SCJ32X450-40 FAQ
At 0.5 MPa, the push force is 402 N and the pull force is 345 N. The maximum operating pressure is 1.0 MPa, delivering a theoretical push force of 804 N. Because it is a single-rod cylinder, the push force is always greater than the pull force due to the rod area.
Yes, if you need field-adjustable stroke. The SCJ32X450-40 has the same bore, rod, port, and mounting dimensions as an SC32, but includes a rear adjusting screw that shortens the stroke end by up to 40 mm. Ensure your machine has clearance for the slightly longer body and that the 450 mm nominal stroke and PT1/8 ports match your existing setup.
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