Airtac SCJ32 Standard Cylinder SCJ32X300-20
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X300-20 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, 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 SCJ32X300-20
The SCJ32X300-20 is a 32 mm bore double-acting single-rod pneumatic cylinder with a rear adjusting screw that provides up to 20 mm of field-adjustable stroke-end reduction. This lets you fine-tune the piston stop position without replacing the cylinder or adding external hard stops, making it ideal for commissioning trials and format changeovers on compact machinery. At 0.5 MPa it delivers 402 N push and 345 N pull, with a 12 mm diameter piston rod and PT1/8 ports.
Body length A for this SCJ model is 182 mm, and the integrated air cushion (21 mm length) decelerates the piston smoothly near stroke end. The cylinder operates on 40 µm filtered air from 0.15 to 1.0 MPa, with a proof pressure of 1.5 MPa. Standard temperature range is -20 to +70 °C with the default TPU seals, and the maximum standard stroke for bore 32 is 1000 mm.
Airtac SCJ32 Standard Cylinder SCJ32X300-20 Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X300-20 |
|---|---|
| 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 SCJ32X300-20
| 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 SCJ32X300-20 Is Used
Commissioning Fine-Tuning
The 20 mm adjusting screw allows technicians to dial in the exact stroke end position during machine bring-up, compensating for assembly tolerances without swapping cylinders.
Small Part Ejector
With 402 N of push force, this 32 mm bore cylinder can eject lightweight parts from a conveyor, and the adjustable stroke lets you set the precise push-off distance for different product sizes.
Wear Compensation
In clamping or pressing fixtures, the screw can be periodically advanced to take up mechanical wear on tooling pads, maintaining consistent clamping force over thousands of cycles.
Is the Airtac SCJ32 Standard Cylinder SCJ32X300-20 the Right Cylinder?
Choose the SCJ32X300-20 when you need a 300 mm nominal stroke with the ability to shorten the end position by up to 20 mm during setup. If your force requirement increases, stepping up to the SCJ40 bore provides 628 N push at 0.5 MPa. For applications requiring a fixed, non-adjustable stroke, the standard SC32X300 is the direct alternative. This SCJ cylinder replaces any AirTAC SCJ32X300-20 with PT ports and basic mounting; ensure the adjustable range matches your machine's adjustment requirement. At 300 mm stroke, verify that the rod is adequately supported if significant side loads are present, or consider adding an external guide rail.
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 SCJ32X300-20 FAQ
At 0.5 MPa, the push force is 402 N and the pull force is 345 N (due to the 12 mm rod area). At the maximum operating pressure of 0.9 MPa, push force reaches 724 N. The theoretical force at 1.0 MPa is 82 kgf.
Yes, the SCJ32X300-20 can replace an SC32X300 if you need the 20 mm adjustable stroke feature. The mounting dimensions and port locations are identical. Ensure your application can accommodate the slightly longer rear cap that houses the adjusting screw.
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