The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X320-20S 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, 320mm nominal stroke, PT1/8 ports and adjustable end cushioning.
The SCJ32X320-20S is a double-acting, single-rod adjustable-stroke cylinder that lets you fine-tune the stroke end by up to 20 mm without swapping the unit. Its 12 mm rod and 21 mm air cushion deliver smooth deceleration, while the 182 mm body length (A dimension) keeps the footprint compact for a 320 mm nominal stroke machine section.
At 0.5 MPa, this 32 mm bore cylinder generates 402 N of push force and 345 N on the pull stroke. The built-in magnet (denoted by the -S suffix) allows direct mounting of CMSG/DMSG/EMSG sensors along the tie-rod barrel for reliable end-of-stroke detection, making commissioning and format changeovers faster.
| Model | Airtac SCJ32 Standard Cylinder SCJ32X320-20S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 320 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.
| 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.
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×320 | 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.
Dial in the exact stroke end during initial machine setup using the 20 mm rear adjusting screw, eliminating the need to machine custom stops for light positioning tasks.
Adjust the push stroke on a packaging line diverter gate for different product widths. The 402 N push force at 0.5 MPa handles small flaps and cartons, and the built-in magnet confirms gate position.
Compensate for jaw or pad wear in a light-duty clamping fixture by advancing the stroke end. The 20 mm adjustment range extends service intervals before requiring a mechanical shim change.
Choose the SCJ32X320-20S when you need a compact, field-adjustable stroke end for a 32 mm bore application. If your force requirement grows, stepping up to the SCJ40 series provides 628 N of push force at the same 0.5 MPa. For applications where the stroke is permanently fixed, a standard SC32X320 cylinder eliminates the adjusting screw. This model is a direct dimensional replacement for another AirTAC SCJ32 adjustable-stroke cylinder with a 320 mm nominal stroke, 20 mm adjust range, PT ports, and a built-in magnet. For strokes of 300 mm or more, ensure the rod is guided externally or consider a guided cylinder if the load applies significant side force, to prevent rod bending.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, it delivers 402 N of push force and 345 N of pull force. The maximum push force at 0.9 MPa is 724 N. Because it is a single-rod cylinder, the push force is always greater than the pull force due to the area of the 12 mm rod.
It can replace an SC32 of the same 320 mm nominal stroke if you need the 20 mm adjustable stroke-end feature and have clearance for the slightly longer rear cap. Ensure your mounting matches—this SCJ32X320-20S uses a basic mount, PT ports, and has a built-in magnet for sensors.
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