Airtac SCJ32 Standard Cylinder SCJ32X125-30
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X125-30 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, 125mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke125 mm
- Stroke adjust-30 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X125-30
The SCJ32X125-30 is a double-acting, single-rod tie-rod cylinder that delivers 402 N of push force at 0.5 MPa, with a 12 mm piston rod and PT1/8 pneumatic ports. Its defining feature is the rear-cap adjusting screw, which allows the stroke end position to be shortened by up to 30 mm in the field, making it ideal for commissioning and fine-tuning without replacing the cylinder.
This adjustable-stroke design is built on the standard SC platform, sharing the same 21 mm air cushion for smooth deceleration and a body length A of 182 mm. The 125 mm nominal stroke is well within the 1000 mm maximum standard stroke for the 32 mm bore, ensuring this is a readily available configuration for light-duty positioning and clamping tasks.
Airtac SCJ32 Standard Cylinder SCJ32X125-30 Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X125-30 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 125 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 SCJ32X125-30
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×125 | 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 SCJ32X125-30 Is Used
Commissioning & Setup
Fine-tune the end-of-stroke position during initial machine setup to perfectly align with mating parts, eliminating the need to fabricate shims or custom stops.
Light-Duty Clamping
Adjust the clamping stroke to accommodate varying workpiece thicknesses in assembly jigs, with 402 N of push force at 0.5 MPa providing consistent holding power.
Small Part Ejection
Set the precise ejection stroke for small components on a conveyor line, and easily readjust the 30 mm range as the mechanism beds in or wears over time.
Is the Airtac SCJ32 Standard Cylinder SCJ32X125-30 the Right Cylinder?
Choose the SCJ32X125-30 when you need to dial in an exact stroke end position on a machine, eliminating the need for external hard stops. If your application requires more force, stepping up to the SCJ40 series provides 628 N of push force at the same 0.5 MPa pressure. For applications where the stroke is fixed and will never need adjustment, the standard SC32X125 offers the same performance in a slightly more compact package. As a direct replacement, match the 32 mm bore, 125 mm nominal stroke, 30 mm adjust range, PT port thread, and basic mounting style.
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 SCJ32X125-30 FAQ
At the standard operating pressure of 0.5 MPa, this cylinder generates 402 N of push force and 345 N of pull force. The maximum push force at the 0.9 MPa operating limit is 724 N.
Yes, the SCJ32X125-30 is dimensionally based on the SC32 platform and can replace a fixed-stroke SC32X125 cylinder if you need the added 30 mm stroke-end adjustment. Ensure the slightly longer rear-cap assembly fits your mounting space.
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