Airtac SCJ32 Standard Cylinder SCJ32X40-30
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X40-30 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, 40mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke40 mm
- Stroke adjust-30 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X40-30
The SCJ32X40-30 is a double-acting, single-rod tie-rod cylinder with a rear adjusting screw that provides up to 30 mm of stroke-end adjustment. This allows you to dial in the exact stopping position on the machine without changing the cylinder or adding external hard stops. With a 12 mm diameter piston rod and PT1/8 ports, it delivers 402 N of push force at 0.5 MPa, making it a compact solution for light positioning and clamping tasks.
Its adjustable cushion decelerates the piston smoothly, and the 182 mm body length (A dimension) keeps the footprint predictable during integration. The operating pressure spans 0.15–1.0 MPa, and the standard TPU seals handle -20 to +70 °C. This model comes in a basic mount configuration with PT threads, ready for direct mounting via the tie-rod nuts.
Airtac SCJ32 Standard Cylinder SCJ32X40-30 Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X40-30 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 40 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 SCJ32X40-30
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×40 | 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 SCJ32X40-30 Is Used
Commissioning Fine-Tuning
During machine setup, the 30 mm adjustment screw lets technicians precisely set the end-of-stroke position for sensors or grippers without iterative disassembly, speeding up the commissioning process.
Small Part Stops
Used as a retractable stop on a conveyor for small packages, the adjustable stroke allows operators to quickly change the stop height to accommodate different product sizes on the fly.
Wear Compensation
In repetitive pressing or clamping fixtures, the stroke can be incrementally extended over time to compensate for pad or tooling wear, maintaining consistent contact force without replacing the cylinder.
Is the Airtac SCJ32 Standard Cylinder SCJ32X40-30 the Right Cylinder?
Choose the SCJ32 when you need a compact, field-tunable cylinder for light-duty applications. If you require more force, step up to the 40 mm bore SCJ40, which provides 628 N of push at the same 0.5 MPa pressure. For applications where the stroke is fixed and never needs adjustment, the standard SC32 fixed-stroke cylinder is a simpler, cost-effective alternative. This SCJ32X40-30 is a direct replacement for any AirTAC SCJ32 with a 40 mm nominal stroke and 30 mm adjust range, using PT ports and basic mounting.
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 SCJ32X40-30 FAQ
At the standard 0.5 MPa operating pressure, this cylinder provides 402 N of push force and 345 N of pull force. The maximum push force at 0.9 MPa is 724 N. The pull force is lower because the rod reduces the effective piston area on the return stroke.
A rear-cap screw limits the piston's outward travel, letting you shorten the stroke end by up to 30 mm. It is a direct dimensional replacement for an AirTAC SCJ32X40-30. If you do not need adjustability, the fixed-stroke SC32X40 is a compatible alternative, but you will lose the ability to fine-tune the stroke on the machine.
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