Airtac SCJ32 Standard Cylinder SCJ32X40-30LB
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X40-30LB 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 SCJ32X40-30LB
The SCJ32X40-30LB is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke, allowing you to fine-tune the stroke end by up to 30 mm without removing the unit. With a 12 mm diameter piston rod and PT1/8 ports, this model delivers 402 N of push force at 0.5 MPa, making it a precise actuator for light automation tasks where the end position needs frequent tweaking.
This configuration includes the LB foot mounting accessory (F-SC32LB), which provides stable axial support directly on the machine bed. The cylinder body length A is 182 mm, and the integrated air cushion decelerates the piston smoothly at the end of travel. It operates on filtered air from 0.15 to 1.0 MPa across a standard temperature range of -20 to +70 °C.
Airtac SCJ32 Standard Cylinder SCJ32X40-30LB Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X40-30LB |
|---|---|
| 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 SCJ32X40-30LB
| 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 SCJ32X40-30LB Is Used
Commissioning & Setup
Fine-tune the end position of a stop gate or diverter during initial machine setup without needing to swap cylinders or fabricate custom shims, saving hours of mechanical adjustment.
Wear Compensation
Adjust the stroke end to take up mechanical wear on a pusher or clamping mechanism over time, maintaining consistent contact pressure and part positioning without replacing components.
Small-Part Ejectors
Dial in the exact ejection stroke for different part heights on a pick-and-place or sorting system, enabling a quick changeover between product batches with a simple screw adjustment.
Is the Airtac SCJ32 Standard Cylinder SCJ32X40-30LB the Right Cylinder?
Choose this 32 mm bore SCJ when your application requires a compact, adjustable end-stop for push forces around 402 N at 0.5 MPa. If you need more force, stepping up to the SCJ40 bore provides 628 N of push force at the same pressure. For applications requiring a fixed, non-adjustable stroke, the standard SC series is a simpler and more cost-effective alternative.
This cylinder is a direct replacement for another AirTAC SCJ32 adjustable-stroke unit with a 40 mm nominal stroke, a 30 mm adjustment range, PT threads, and an LB foot mount. Ensure the replacement matches the bore, stroke, adjustment range, and mounting style to guarantee identical fit and performance.
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 SCJ32X40-30LB FAQ
At the standard operating pressure of 0.5 MPa, this cylinder provides 402 N of pushing force and 345 N of pulling force. The maximum push force at 0.9 MPa is 724 N. The pull force is lower due to the area of the 12 mm piston rod.
Yes, if you need the ability to fine-tune the stroke end. The SCJ32X40-30LB has the same mounting footprint and porting as an SC32X40, but the rear adjusting screw adds some length. Ensure the 30 mm adjustment range covers your stroke reduction needs.
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