Airtac SCJ32 Standard Cylinder SCJ32X150-20
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X150-20 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 20 mm range without swapping the cylinder. Ø32mm bore, 150mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke150 mm
- Stroke adjust-20 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X150-20
The SCJ32X150-20 is a double-acting, single-rod pneumatic cylinder with a 32 mm bore, 150 mm nominal stroke, and a 20 mm rear adjusting screw that lets you dial in the exact stroke end position on the machine. Its 12 mm diameter piston rod and PT1/8 ports deliver 402 N of push force at 0.5 MPa (724 N at the 0.9 MPa maximum operating pressure), making it a compact yet capable actuator for light positioning and clamping tasks.
Because the stroke is field-adjustable, you can compensate for wear, fine-tune during commissioning, or adapt to minor format changes without removing the cylinder or adding external hard stops. The body length A(SCJ) is 182 mm, and the adjustable air cushion decelerates the piston smoothly at both ends. This model is built with the standard TPU seal, PT threads, and no magnet, suiting general-purpose industrial air systems.
Airtac SCJ32 Standard Cylinder SCJ32X150-20 Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X150-20 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 150 mm |
| Stroke adjustment | Up to 20 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 SCJ32X150-20
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×150 | Nominal (maximum) stroke length in mm. |
| -20 | 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 SCJ32X150-20 Is Used
Commissioning & Setup
During machine bring-up, the 20 mm adjustment screw lets technicians dial in the exact end-stop position for a sensor actuator or stop gate without fabricating shims or moving the cylinder body.
Wear Compensation
In light clamping or pressing fixtures where tooling or pads wear over time, the adjustable stroke can be periodically tweaked to restore the correct clamping position, extending the life of the consumables.
Small Part Diverting
Used on a mini conveyor diverter, the 150 mm stroke with fine end adjustment ensures the pusher blade aligns perfectly with the lane opening, accommodating slight variations in guide rail positioning.
Is the Airtac SCJ32 Standard Cylinder SCJ32X150-20 the Right Cylinder?
Choose this 32 mm bore when your application needs up to 402 N of push force at standard shop air. If you need more force, stepping up to the 40 mm bore (628 N push at 0.5 MPa) is the logical move; if space is extremely tight and force requirements are lower, a smaller bore may fit, though the SCJ series starts at 32 mm. For applications that never need stroke adjustment, the fixed-stroke SC32X150 is a simpler, slightly more compact alternative. This SCJ32X150-20 directly replaces any AirTAC SCJ32 adjustable-stroke cylinder with the same 150 mm nominal stroke, 20 mm adjust range, and PT ports.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-20)
- ✓ 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 SCJ32X150-20 FAQ
At 0.5 MPa it delivers 402 N pushing and 345 N pulling. At the maximum operating pressure of 0.9 MPa, push force reaches 724 N. The pull force is lower because the 12 mm rod reduces the effective piston area on the return stroke.
Physically it can mount in the same space, but the SCJ body is slightly longer to house the adjusting mechanism. It is a direct functional replacement if you need the 20 mm field-adjustable stroke feature. Ensure the port size (PT1/8) and mounting style match your current setup.
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