The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X30-20 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, 30mm nominal stroke, PT1/8 ports and adjustable end cushioning.
The SCJ32X30-20 is a double-acting, single-rod tie-rod cylinder that puts a 20 mm field-adjustable stroke range at your fingertips. With a 12 mm piston rod and a 402 N push force at 0.5 MPa (724 N at 0.9 MPa), it handles light positioning and clamping tasks where the final stop point needs fine-tuning during commissioning or changeover.
The rear-cap adjusting screw lets you shorten the nominal 30 mm stroke end by up to 20 mm without removing the cylinder or adding external hard stops. The 32 mm bore body has an A(SCJ) length of 182 mm and an air cushion of 21 mm to decelerate the piston smoothly. Standard PT1/8 ports and an M10x1.25 rod thread keep integration simple.
| Model | Airtac SCJ32 Standard Cylinder SCJ32X30-20 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 30 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. |
| ×30 | 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 position on a new assembly jig without machining custom stops. The 20 mm screw adjustment lets technicians optimize the piston travel on the fly.
In light pressing or clamping operations, use the adjustable stroke to take up pad wear over time. A quick turn of the rear screw restores the correct clamping gap without downtime.
Act as a retractable end stop on a mini conveyor. The adjustable stroke lets you fine-tune the stopping position for different product sizes with a simple screw adjustment.
This 32 mm bore suits compact fixtures needing up to 402 N of push force at standard plant air. If your load demands more force, the next step up is the SCJ40 series, which delivers 628 N push at 0.5 MPa. For applications where the stroke never changes, a fixed-stroke SC32 cylinder is a simpler, cost-effective alternative. When replacing an existing SCJ32X30-20, match the bore, 30 mm nominal stroke, 20 mm adjustment range, PT port thread, and basic mounting to ensure drop-in compatibility.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 402 N and the pull force is 345 N. The maximum operating 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 rod area.
Yes, if you need field adjustability. The SCJ shares the same 32 mm bore, 12 mm rod, and PT1/8 ports as the SC, but the body is slightly longer to house the adjusting screw. Ensure your mounting space accommodates the A(SCJ) length of 182 mm.
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