Airtac SCJ32 Standard Cylinder SCJ32X120-20
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X120-20 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 20 mm range without swapping the cylinder. Ø32mm bore, 120mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke120 mm
- Stroke adjust-20 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X120-20
The SCJ32X120-20 is a 32 mm bore double-acting single-rod cylinder with a rear adjusting screw that lets you shorten the stroke end by up to 20 mm without swapping the unit. At 0.5 MPa it delivers 402 N push and 345 N pull, making it a capable compact actuator for light positioning tasks.
This model uses a 12 mm rod and PT1/8 ports, with a 21 mm air cushion at each end for smooth deceleration. The body length A(SCJ) is 182 mm, and the adjustable screw sets the exact end position during commissioning or changeover, so you can dial in the stroke precisely where the machine needs it.
Airtac SCJ32 Standard Cylinder SCJ32X120-20 Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X120-20 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 120 mm |
| Stroke adjustment | Up to 20 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 SCJ32X120-20
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×120 | Nominal (maximum) stroke length in mm. |
| -20 | 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 SCJ32X120-20 Is Used
Commissioning Fine-Tuning
During machine setup, the 20 mm adjustment screw lets technicians dial in the exact end-stop position for grippers or ejectors without re-mounting the cylinder.
Wear Take-Up on Stops
On packaging lines, the adjustable stroke compensates for mechanical wear on end stops over time, maintaining consistent product placement without part changes.
Format Changeover
When a small assembly jig switches between product sizes, the SCJ32X120-20 can be quickly re-adjusted to the new required stroke length, reducing downtime.
Is the Airtac SCJ32 Standard Cylinder SCJ32X120-20 the Right Cylinder?
Choose the SCJ32X120-20 when you need to fine-tune the stroke end position within a 20 mm window. If you require more push force, step up to the 40 mm bore (628 N push at 0.5 MPa). For a fixed, non-adjustable stroke, the standard SC series is a simpler alternative. This cylinder is a direct replacement for an AirTAC SCJ32X120-20 with PT ports and basic mounting. If you need position sensing, specify the -S magnet option to use CMSG/DMSG sensors.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-20)
- ✓ 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 SCJ32X120-20 FAQ
At 0.5 MPa, it produces 402 N of push force and 345 N of pull force. At the maximum operating pressure of 1.0 MPa, the theoretical push force is 804 N.
Yes, if your old cylinder is an AirTAC SCJ32 with a 120 mm nominal stroke and a 20 mm adjustment range, this is the direct replacement. Ensure the port thread (PT) and mounting style match your current setup.
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