Airtac SCJ32 Standard Cylinder SCJ32X70-30
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X70-30 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, 70mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke70 mm
- Stroke adjust-30 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X70-30
The SCJ32X70-30 puts a 30 mm field-adjustable stroke range into a compact 32 mm bore tie-rod body, delivering 402 N of push force at 0.5 MPa (724 N at 0.9 MPa). A rear-cap adjusting screw lets you dial back the stroke end during commissioning, format changeover, or wear take-up without removing the cylinder or adding external hard stops.
Its 12 mm piston rod and M10x1.25 rod thread handle light positioning and clamping tasks, while the 21 mm air cushion decelerates the load smoothly. The body length A(SCJ) is 182 mm, and the PT1/8 port keeps plumbing simple. This model ships in basic mount configuration with TPU seals and PT threads.
Airtac SCJ32 Standard Cylinder SCJ32X70-30 Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X70-30 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 70 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 SCJ32X70-30
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×70 | 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 SCJ32X70-30 Is Used
Commissioning & Setup
Dial in the exact stroke end position on a new assembly line without swapping cylinders. The 30 mm adjustment range lets technicians fine-tune actuator travel during initial machine bring-up.
Wear Compensation
Take up mechanical play or seal wear in clamping and pressing fixtures over time. A quick turn of the rear screw restores the original stroke end without disassembly.
Small-Part Sorting Gates
Adjust the gate opening stroke on a packaging conveyor to handle different product sizes. The 402 N push force at 0.5 MPa is ample for light diverting and sorting flaps.
Is the Airtac SCJ32 Standard Cylinder SCJ32X70-30 the Right Cylinder?
Choose the SCJ32X70-30 when you need to fine-tune a 70 mm maximum stroke by up to 30 mm on the machine. If your force requirement grows, step up to the 40 mm bore SCJ40 series, which provides 628 N push at 0.5 MPa. For applications that do not need stroke adjustability, the fixed-stroke SC32 offers a simpler, lower-cost alternative. When replacing an existing unit, match the bore (32 mm), nominal stroke (70 mm), adjust range (-30), PT port thread, and basic mounting style. For strokes of 300 mm or more, evaluate side-load and rod-bending risks; an external guide or guided cylinder may be required.
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 SCJ32X70-30 FAQ
At 0.5 MPa, the cylinder produces 402 N pushing and 345 N pulling. At the maximum operating pressure of 0.9 MPa, push force reaches 724 N. The theoretical maximum at 1.0 MPa is 82 kgf. Because it is a single-rod cylinder, push force is always greater than pull force.
Yes, if you need the adjustable stroke feature. The SCJ32X70-30 matches the SC32 mounting footprint and porting (PT1/8) but adds a rear adjusting screw that shortens the stroke end by up to 30 mm. Ensure your application can accommodate the slightly longer SCJ body length (182 mm A dimension).
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