Airtac SCJ32 Standard Cylinder SCJ32X40-30S
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X40-30S 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, 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 SCJ32X40-30S
The SCJ32X40-30S is a compact adjustable-stroke cylinder that delivers 402 N of push force at 0.5 MPa, making it a precise actuator for light-duty positioning tasks. Its rear-cap screw provides a 30 mm adjustment range, allowing you to fine-tune the stroke end without removing the cylinder from the machine.
This genuine AirTAC double-acting, single-rod unit features a 12 mm piston rod, PT1/8 ports, and a 21 mm air cushion for smooth deceleration. The built-in magnet enables direct mounting of CMSG/DMSG sensors for reliable end-of-stroke detection.
Airtac SCJ32 Standard Cylinder SCJ32X40-30S Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X40-30S |
|---|---|
| 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 SCJ32X40-30S
| 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 SCJ32X40-30S Is Used
Commissioning & Setup
The 30 mm adjust range lets technicians dial in the exact stroke end during machine commissioning without swapping cylinders, speeding up line start-up.
Small-Part Sorting Gates
Fine-tune the gate opening to match different product sizes on a conveyor, using the rear screw to set a precise mechanical stop.
Sensor Calibration Jigs
The built-in magnet and adjustable stroke make it ideal for test fixtures where the actuator position must be varied to calibrate optical or proximity sensors.
Is the Airtac SCJ32 Standard Cylinder SCJ32X40-30S the Right Cylinder?
Choose the SCJ32 when you need field-adjustable stroke in a compact envelope; its 402 N push force (at 0.5 MPa) suits light clamping and sorting. If you require more force, step up to the SCJ40, which provides 628 N of push at the same pressure. For applications where the stroke is fixed and never needs field tuning, the standard SC32 offers a simpler, cost-effective alternative.
To replace this unit, match the 32 mm bore, 40 mm nominal stroke, 30 mm adjust range, PT thread, and the built-in magnet. The SCJ mounting system accepts basic, FA, LB, or TC mounts, but note that flange (FB) and clevis (CA/CB) accessories are not available for this series.
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 SCJ32X40-30S 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, the push force is greater than the pull force.
Yes, provided the bore (32 mm), port thread (PT), and mounting style match. The SCJ32 body is slightly longer than an SC32 of the same nominal stroke due to the rear adjusting mechanism, so verify the available space in your machine.
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