The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X450-20S 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, 450mm nominal stroke, PT1/8 ports and adjustable end cushioning.
The SCJ32X450-20S is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, giving you up to 20 mm of fine-tuning range via the rear-cap screw. With a 32 mm bore and 12 mm rod, it delivers 402 N of push force at 0.5 MPa and 724 N at the maximum operating pressure of 0.9 MPa, making it a precise actuator for mid-range positioning tasks.
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 ensure straightforward pneumatic connections, while the 21 mm air cushion at each end protects the cylinder from impact damage.
| Model | Airtac SCJ32 Standard Cylinder SCJ32X450-20S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 450 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. |
| ×450 | 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.
The 20 mm rear adjustment screw lets technicians quickly dial in the exact end-stop position on a new assembly line without swapping out the cylinder or adding external hard stops.
In high-cycle pick-and-place systems, the adjustable stroke can be periodically tweaked to compensate for mechanical wear in gripper fingers or tooling, maintaining precise placement over time.
Easily adjust the stroke end for different product sizes on a packaging machine, reducing downtime between batches. The built-in magnet provides sensor feedback to confirm the new position.
Choose the SCJ32 when you need a compact actuator with the ability to dial in the stroke end position during commissioning or changeovers. If your force requirements increase, stepping up to the SCJ40 provides 628 N of push force at 0.5 MPa. For applications where the stroke length is fixed and never needs adjustment, the standard SC32 fixed-stroke cylinder is a more economical choice. This SCJ32X450-20S is a direct replacement for another AirTAC SCJ32 adjustable cylinder with a 450 mm nominal stroke, 20 mm adjust range, PT thread, and magnet.
Adjustable-stroke checklist
At the standard operating pressure of 0.5 MPa, this cylinder provides 402 N of push force and 345 N of pull force. At the maximum operating pressure of 0.9 MPa, the push force increases to 724 N. The pull force is lower due to the area of the 12 mm piston rod.
Yes, if you need the added benefit of field-adjustable stroke. The SCJ32X450-20S has the same mounting footprint and port size as the SC32 series but includes a rear adjusting screw. Ensure your application can accommodate the slightly longer body length A of 182 mm and that the 20 mm adjustment range meets your needs.
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