Airtac SCJ32 Standard Cylinder SCJ32X120-30
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X120-30 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, 120mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke120 mm
- Stroke adjust-30 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X120-30
The SCJ32X120-30 delivers a nominal 120 mm stroke with a rear-cap adjusting screw that lets you shorten the stroke end by up to 30 mm without removing the cylinder. This 32 mm bore double-acting, single-rod design provides 402 N of push force at 0.5 MPa (724 N at 0.9 MPa), making it a compact workhorse for light positioning and end-stop tuning tasks.
Built on the proven SC tie-rod platform, the adjustable-stroke version adds a 12 mm diameter piston rod, a 21 mm air cushion for smooth deceleration, and a body length of 182 mm. The PT1/8 port and M10x1.25 rod thread keep connections simple, while the standard TPU seal handles -20 to +70 °C. This genuine AirTAC cylinder is ideal for commissioning trials where the final stroke length is determined on the machine.
Airtac SCJ32 Standard Cylinder SCJ32X120-30 Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X120-30 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 120 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 SCJ32X120-30
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×120 | 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 SCJ32X120-30 Is Used
Commissioning & Setup
Field-adjust the stroke end by up to 30 mm to dial in the exact stopping position during machine commissioning, eliminating the need to stock multiple fixed-stroke cylinders for trial runs.
Wear Compensation
Compensate for gradual wear on tooling or mechanical stops in light assembly fixtures. The rear screw allows operators to tweak the stroke end without disassembling the actuator.
Small Part Ejection
Fine-tune the pusher stroke on a small-part conveyor diverter. The 30 mm adjustment lets you adapt the ejection throw for different product sizes without swapping the cylinder.
Is the Airtac SCJ32 Standard Cylinder SCJ32X120-30 the Right Cylinder?
Choose the SCJ32 when you need to fine-tune the stroke end position during setup or changeover. If you require more push force, step up to the 40 mm bore (628 N at 0.5 MPa); for a lighter, fixed-stroke option, the standard SC32 is a simpler pick. The 30 mm adjustment range is particularly useful for taking up wear on mechanical stops or accommodating small batch-to-batch part variations.
For a direct replacement, match the 32 mm bore, 120 mm nominal stroke, 30 mm adjust range, PT1/8 port thread, and basic mounting. If your application involves significant side loads, consider adding an external guide rail or switching to a guided cylinder, as the 12 mm rod is not designed to bear heavy lateral forces.
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 SCJ32X120-30 FAQ
At 0.5 MPa, the push force is 402 N and the pull force is 345 N (due to the single 12 mm rod). At the maximum operating pressure of 0.9 MPa, push force reaches 724 N. Always size your load for the lower pull force if the cylinder works in both directions.
Yes, if you need field-adjustable stroke end control. The SCJ32X120-30 matches the SC32's 32 mm bore, port size, and rod thread, but its body is slightly longer to house the adjusting screw. Ensure the 30 mm adjustment range covers your stroke reduction needs, and verify the mounting footprint is compatible.
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