Airtac SCJ32 Standard Cylinder SCJ32X90-20S
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X90-20S 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, 90mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke90 mm
- Stroke adjust-20 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X90-20S
The SCJ32X90-20S is a 32 mm bore double-acting single-rod cylinder that lets you fine-tune the stroke end on the machine with a rear adjusting screw, offering up to 20 mm of retraction from the 90 mm nominal maximum. It delivers 402 N of push force at 0.5 MPa and 724 N at the 0.9 MPa maximum operating pressure, driven through a 12 mm diameter piston rod with M10x1.25 threads.
This model includes a built-in magnet (-S suffix), so you can clamp CMSG, DMSG, or EMSG reed and solid-state sensors directly onto the tie-rod barrel for non-contact position sensing. The body length A(SCJ) is 182 mm, and the PT1/8 ports keep the envelope compact for light automation tasks where space is tight.
Airtac SCJ32 Standard Cylinder SCJ32X90-20S Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X90-20S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 90 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 SCJ32X90-20S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×90 | 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 SCJ32X90-20S Is Used
Commissioning & Setup
Dial in the exact stroke end position during machine commissioning without swapping cylinders or machining hard stops, saving hours of mechanical adjustment time.
Small-Part Ejectors
Fine-tune the ejector stroke on a packaging line to accommodate different product heights, using the 20 mm adjustment range to prevent product damage.
Sensor-Controlled Sorting Gates
The built-in magnet lets CMSG/DMSG sensors confirm gate position, while the rear screw adjusts the gate opening stroke for mixed-size part sorting.
Is the Airtac SCJ32 Standard Cylinder SCJ32X90-20S the Right Cylinder?
Choose this 32 mm bore when your application needs a compact adjustable-stroke cylinder with up to 402 N of push force at standard shop air. If you need more force, step up to the 40 mm bore SCJ40 series, which provides 628 N push at 0.5 MPa. For applications where the stroke never needs field adjustment, the fixed-stroke SC32 series is a simpler, lower-cost alternative.
When replacing an existing SCJ32X90-20S, match the bore, 90 mm nominal stroke, 20 mm adjust range, PT1/8 port thread, and the -S magnet option. This cylinder uses the basic mounting style; if you need a pivot mount, consider adding the TC centre trunnion kit (F-SC32TC) on your next order.
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 SCJ32X90-20S FAQ
At 0.5 MPa it generates 402 N pushing and 345 N pulling (the pull force is lower because the 12 mm rod reduces the piston area on the return stroke). At the maximum operating pressure of 0.9 MPa, push force reaches 724 N.
Yes, if you need field-adjustable stroke. The SCJ32X90-20S shares the same 32 mm bore, tie-rod construction, and mounting accessories as the SC32 series, but adds a rear adjusting screw that lets you shorten the stroke end by up to 20 mm. Ensure your machine can accommodate the slightly longer SCJ body length (182 mm).
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