Airtac SCJ32 Standard Cylinder SCJ32X75-20S
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X75-20S 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, 75mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke75 mm
- Stroke adjust-20 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X75-20S
The SCJ32X75-20S is a compact 32 mm bore double-acting single-rod cylinder with a rear adjusting screw that provides up to 20 mm of field-adjustable stroke-end reduction. With 402 N of push force at 0.5 MPa and a 12 mm diameter piston rod, it is well-suited for light-duty positioning tasks where the final stroke length must be fine-tuned during commissioning or after mechanical wear.
This model includes a built-in magnet (suffix -S), allowing direct mounting of CMSG/DMSG/EMSG reed or solid-state sensors on the tie-rod barrel for reliable end-of-stroke detection. The standard PT1/8 port and M10x1.25 rod thread keep the cylinder compatible with common pneumatic fittings, while the 21 mm air cushion at each end ensures quiet deceleration.
Airtac SCJ32 Standard Cylinder SCJ32X75-20S Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X75-20S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 75 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 SCJ32X75-20S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×75 | 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 SCJ32X75-20S Is Used
Commissioning Fine-Tuning
During machine setup, the 20 mm adjusting screw allows technicians to dial in the exact stroke end position for grippers or stops without modifying the mounting brackets.
Wear Compensation
In repetitive light assembly, the adjustable stroke can be shortened to compensate for gradual wear on tooling tips, maintaining consistent part contact without reprogramming the PLC.
Small Part Diverting
Used as a compact diverter gate actuator, the stroke can be adjusted on the fly to handle different product widths on a packaging line, with the magnetic piston confirming gate position.
Is the Airtac SCJ32 Standard Cylinder SCJ32X75-20S the Right Cylinder?
Choose this 32 mm bore when your application requires a push force up to 402 N at standard plant pressure. If you need more force, stepping up to the SCJ40 bore provides 628 N of push force at the same 0.5 MPa. For applications where the stroke is fixed and never needs field adjustment, the standard SC32 fixed-stroke cylinder is a simpler, more economical alternative. This SCJ32X75-20S is a direct replacement for any AirTAC SCJ32 cylinder with a 75 mm nominal stroke, 20 mm adjust range, PT ports, basic mounting, and a built-in 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 SCJ32X75-20S FAQ
At 0.5 MPa, this 32 mm bore 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. The adjustable stroke screw does not alter the cylinder's output force.
Yes, if you need the ability to fine-tune the stroke end. The SCJ32X75-20S matches the SC32 mounting footprint and porting but adds a rear adjusting screw. Ensure your machine has clearance for the slightly longer body length A of 182 mm and that the 20 mm adjustment range covers your stroke variation needs.
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