
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X300-30S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 30 mm range without swapping the cylinder. Ø32mm bore, 300mm nominal stroke, PT1/8 ports and adjustable end cushioning.
The SCJ32X300-30S is a double-acting, single-rod tie-rod cylinder with a rear-cap adjusting screw that provides 30 mm of field-adjustable stroke-end control, letting you fine-tune the 300 mm nominal stroke without removing the cylinder. At 0.5 MPa it delivers 402 N push and 345 N pull, driven by a 12 mm diameter rod through PT1/8 ports.
A built-in magnet (the -S suffix) allows CMSG/DMSG/EMSG reed or solid-state sensors to clamp directly onto the barrel for non-contact position sensing. The 21 mm air cushion at each end decelerates the piston smoothly, and the TPU seal keeps the unit running from -20 to +70 °C with standard filtered air.
| Model | Airtac SCJ32 Standard Cylinder SCJ32X300-30S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 300 mm |
| Stroke adjustment | Up to 30 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. |
| ×300 | Nominal (maximum) stroke length in mm. |
| -30 | 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 30 mm adjust range lets commissioning engineers dial in the exact stroke end on a new assembly fixture without swapping cylinders or machining hard stops, saving hours during line bring-up.
Use the adjustable stroke to set the gate opening precisely for different component sizes on a conveyor; the built-in magnet confirms gate position at every cycle via a CMSG sensor.
As clamp pads wear, the rear screw can advance the stroke end by up to 30 mm to restore full clamping force without replacing the cylinder, keeping a 32 mm bore pneumatic clamp in service longer.
Step up to the 40 mm bore SCJ40X300-30 for 628 N push at 0.5 MPa if the 402 N of this 32 mm model is marginal, or drop to a fixed-stroke SC32X300 when the application never needs stroke adjustment. For a direct replacement, match the 32 mm bore, 300 mm nominal stroke, 30 mm adjust range, PT port thread, basic mount, and the -S magnet option—any deviation in the adjust code or sensor readiness will change the cylinder’s tuning envelope. At 300 mm of stroke, ensure the rod is guided externally or switch to a guided cylinder if side loads are present, because the 12 mm rod can buckle under off-axis forces.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, push force is 402 N and pull force is 345 N. At the maximum operating pressure of 0.9 MPa, push force reaches 724 N. The pull force is lower because the 12 mm rod reduces the effective piston area on the return stroke.
Yes, if the original is an AirTAC SCJ32 with a 300 mm nominal stroke, a 30 mm adjust range, PT ports, basic mounting, and a magnet for sensors. The adjustable-stroke design is specific to the SCJ family—a fixed-stroke SC cylinder cannot be substituted without losing the field-adjustment feature.
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