Airtac SCJ32 Standard Cylinder SCJ32X120-75S
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X120-75S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 75 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-75 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X120-75S
The SCJ32X120-75S delivers 402 N of push force at 0.5 MPa (724 N at 0.9 MPa) in a compact tie-rod body, with a 12 mm diameter piston rod and PT1/8 ports. Its rear adjusting screw provides up to 75 mm of field-adjustable stroke-end shortening, letting commissioning engineers dial in the exact end position without swapping cylinders or adding external hard stops.
A built-in magnet is factory-installed, so CMSG, DMSG or EMSG reed and solid-state sensors clamp directly onto the barrel for reliable, non-contact end-of-stroke detection. The 21 mm air cushion at each end decelerates the piston smoothly, and the 182 mm body length keeps the envelope tight for space-constrained automation cells.
Airtac SCJ32 Standard Cylinder SCJ32X120-75S Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X120-75S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 120 mm |
| Stroke adjustment | Up to 75 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 SCJ32X120-75S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×120 | Nominal (maximum) stroke length in mm. |
| -75 | 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 SCJ32X120-75S Is Used
Commissioning Fine-Tuning
The 75 mm screw adjustment lets integrators precisely set the retract end position during machine bring-up, compensating for tooling stack-up tolerances without machining new stops.
Small-Part Sorting Gates
Adjustable stroke lets a single SCJ32 actuator serve multiple product lanes by changing the gate opening width on the fly, reducing changeover time on packaging lines.
Sensor-Guided Pick-and-Place
The built-in magnet supports CMSG/DMSG sensors for position feedback, while the adjustable end-stop allows the pick depth to be tuned for different component heights in assembly fixtures.
Is the Airtac SCJ32 Standard Cylinder SCJ32X120-75S the Right Cylinder?
Step up to the 40 mm bore SCJ40 series for 628 N of push force at the same 0.5 MPa pressure if the 402 N output of this 32 mm unit is marginal. When the stroke is fixed and never needs field tuning, a standard SC32 fixed-stroke cylinder saves cost and lead time. For replacement, match the 32 mm bore, 120 mm nominal stroke, 75 mm adjustable range, PT thread, basic mounting, and the magnet-equipped -S suffix; the sensor-ready barrel accepts the same CMSG/DMSG/EMSG switch family.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-75)
- ✓ 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 SCJ32X120-75S FAQ
At 0.5 MPa the push force is 402 N and the pull force is 345 N (the rod reduces the piston area on the return stroke). At the maximum operating pressure of 0.9 MPa, push force reaches 724 N.
Yes, provided the bore, port thread, and mounting style match. The SCJ body is slightly longer due to the adjusting screw mechanism, so verify the available envelope. The built-in magnet on the -S variant also requires sensor-compatible mounting space.
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