
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X300-30 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 SCJ32X300-30 is a double-acting, single-rod pneumatic cylinder with a rear adjusting screw that provides up to 30 mm of field-adjustable stroke-end reduction. This allows precise fine-tuning of the piston stop position without removing the cylinder or adding external hard stops, ideal for commissioning and format changes. With a 12 mm diameter rod and PT1/8 ports, it delivers 402 N of push force at 0.5 MPa, rising to 724 N at the maximum operating pressure of 0.9 MPa.
Built on a durable tie-rod construction with a body length of 182 mm, the SCJ32X300-30 includes an adjustable air cushion to decelerate the piston smoothly near the stroke end. The standard TPU seal operates reliably from -20 to +70 °C with filtered air. This model is a basic configuration without a magnet or mounting bracket, giving you a clean starting point for custom machine integration.
| Model | Airtac SCJ32 Standard Cylinder SCJ32X300-30 |
|---|---|
| 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.
During machine bring-up, the 30 mm adjusting screw lets technicians precisely set the end-of-stroke position for a pick-and-place pusher without iterative disassembly, speeding up the entire commissioning process.
In a repetitive clamping fixture, the adjustable stroke compensates for jaw or workpiece wear over thousands of cycles, maintaining consistent clamp force by simply turning the rear screw to advance the stop point.
A packaging machine running different box sizes uses the SCJ32X300-30 to quickly adjust the stroke end for each format. Operators change the stop position in seconds with a wrench, minimizing downtime between batches.
Choose the SCJ32X300-30 when you need a compact 32 mm bore cylinder with the ability to dial in the stroke end point during setup. If your force requirement exceeds the 724 N available at 0.9 MPa, consider stepping up to the SCJ40 series, which provides 628 N of push at just 0.5 MPa. For applications where the stroke is fixed and never needs adjustment, the standard SC32X300 fixed-stroke cylinder is a simpler, cost-effective alternative.
For a drop-in replacement, match the 32 mm bore, 300 mm nominal stroke, 30 mm adjustable range, and PT port thread. At this 300 mm stroke length, ensure the rod is guided externally if significant side loads are present, or consider a guided cylinder to prevent rod bending and premature seal wear.
Adjustable-stroke checklist
The push force is 402 N at 0.5 MPa and 724 N at 0.9 MPa. The pull force is lower due to the single 12 mm rod: 345 N at 0.5 MPa. The theoretical maximum push force at 1.0 MPa is 82 kgf.
Yes, the SCJ32X300-30 is a direct dimensional replacement for the SC32X300 fixed-stroke cylinder when the adjusting screw is fully retracted. You gain the ability to shorten the stroke end by up to 30 mm. Ensure the port thread (PT) and mounting style match your current setup.
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