Airtac SCJ32 Standard Cylinder SCJ32X120-50S
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X120-50S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 50 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-50 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X120-50S
The SCJ32X120-50S brings field-adjustable stroke control to compact 32 mm bore applications. Its rear-cap screw lets you shorten the stroke end by up to 50 mm without removing the cylinder, delivering 402 N of push force at 0.5 MPa for light clamping and positioning tasks.
A built-in magnet (suffix -S) allows CMSG/DMSG/EMSG sensors to clamp directly onto the tie-rod barrel for end-of-stroke confirmation. With a 12 mm rod, PT1/8 ports, and a 21 mm air cushion, this 182 mm body length cylinder handles speeds from 30 to 800 mm/s.
Airtac SCJ32 Standard Cylinder SCJ32X120-50S Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X120-50S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 120 mm |
| Stroke adjustment | Up to 50 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 SCJ32X120-50S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×120 | Nominal (maximum) stroke length in mm. |
| -50 | 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 SCJ32X120-50S Is Used
Commissioning Fine-Tuning
Dial in the exact stroke end position during machine setup. The 50 mm adjustment range lets technicians compensate for assembly tolerances without swapping cylinders.
Small-Part Ejectors
Adjust the eject stroke for different component heights on a packaging line. The built-in magnet provides sensor feedback to confirm each cycle.
Wear Compensation
Take up mechanical wear in gripper jaws or press tools over time by slightly extending the effective stroke via the rear screw, maintaining consistent contact.
Is the Airtac SCJ32 Standard Cylinder SCJ32X120-50S the Right Cylinder?
Choose the SCJ32 when you need to fine-tune the stroke on a compact machine. If 402 N push at 0.5 MPa is marginal, stepping up to the SCJ40 delivers 628 N. For applications where the stroke is fixed and never changes, the standard SC32 is a simpler, lower-cost alternative. This model replaces any AirTAC SCJ32 with a 120 mm nominal stroke and 50 mm adjust range, PT ports, and a magnet sensor option. At 120 mm stroke, rod deflection is minimal, but if side loads are present, add an external linear guide.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-50)
- ✓ 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 SCJ32X120-50S FAQ
At 0.5 MPa, the push force is 402 N and the pull force is 345 N (due to the 12 mm rod area). At the maximum operating pressure of 0.9 MPa, push force reaches 724 N.
A screw in the rear cap limits how far the piston can retract. Turning the screw shortens the stroke end by up to 50 mm from the 120 mm nominal maximum, allowing you to set the exact position needed on the machine.
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