Airtac SCJ32 Standard Cylinder SCJ32X300-20S
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X300-20S 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, 300mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke300 mm
- Stroke adjust-20 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X300-20S
The SCJ32X300-20S is a double-acting, single-rod tie-rod cylinder with a rear-cap adjusting screw that lets you fine-tune the stroke end position by up to 20 mm without removing the cylinder from the machine. At 0.5 MPa, it delivers 402 N of push force and 345 N on the pull stroke, driven by a 12 mm diameter piston rod. This model includes a built-in magnet, so CMSG/DMSG/EMSG solid-state or reed sensors can be clamped directly onto the barrel for non-contact position sensing.
The 300 mm nominal stroke is well within the 1000 mm maximum standard stroke for the 32 mm bore. The cylinder body length A(SCJ) is 182 mm, and it uses PT1/8 ports with an M10x1.25 rod thread. The adjustable cushion decelerates the piston smoothly over the final 21 mm of travel, and the stroke-end screw provides a repeatable mechanical stop for commissioning trials or format changeovers.
Airtac SCJ32 Standard Cylinder SCJ32X300-20S Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X300-20S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 300 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 SCJ32X300-20S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×300 | 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 SCJ32X300-20S Is Used
Commissioning & Setup
The 20 mm adjusting screw allows technicians to dial in the exact stroke end position during machine commissioning without swapping cylinders or machining external hard stops.
Small-Part Sorting Gates
Adjust the stroke end to fine-tune the opening of a diverter gate on a conveyor line, accommodating different product sizes with a simple screw adjustment.
Sensor-Controlled Actuation
The built-in magnet enables direct mounting of CMSG/DMSG sensors to confirm end-of-stroke position, critical for sequencing in automated assembly cells.
Is the Airtac SCJ32 Standard Cylinder SCJ32X300-20S the Right Cylinder?
Choose the SCJ32X300-20S when your application needs a 32 mm bore with a field-adjustable stroke end, particularly if you require sensor feedback via the integrated magnet. If the 402 N push force at 0.5 MPa is marginal, stepping up to the SCJ40 bore provides 628 N of push force. For applications that do not require stroke adjustability, the fixed-stroke SC32X300 offers a simpler, more compact alternative. If the load introduces significant side forces, consider an external guide rail or a guided cylinder to protect the 12 mm rod from bending. This cylinder is a direct replacement for another AirTAC SCJ32X300-20S with PT ports and a magnet.
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 SCJ32X300-20S FAQ
A screw in the rear cap lets you shorten the stroke end by up to 20 mm from the nominal 300 mm maximum. This sets a new mechanical stop position for the piston, allowing field adjustment without changing the cylinder's overall dimensions or force output.
At 0.5 MPa, the push force is 402 N and the pull force is 345 N. At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 804 N. The pull force is always lower because the rod reduces the effective piston area on the return stroke.
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