The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X20-20 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, 20mm nominal stroke, PT1/8 ports and adjustable end cushioning.
The SCJ32X20-20 is a compact adjustable-stroke cylinder that delivers 402 N of push force at 0.5 MPa, letting you dial in the exact stroke end point within a 20 mm range using the rear-cap screw. Its 12 mm piston rod and 21 mm air cushion provide smooth deceleration in a body length of just 182 mm.
This double-acting, single-rod design is ideal for light clamping, ejection, and sorting tasks where the stroke must be fine-tuned during commissioning or after tooling wear. The tie-rod construction makes it serviceable, and the PT1/8 ports fit standard pneumatic plumbing.
| Model | Airtac SCJ32 Standard Cylinder SCJ32X20-20 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 20 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. |
| ×20 | 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.
Fine-tune the retracted position of a small clamp or stop during machine setup without swapping cylinders or machining external hard stops.
Dial in the exact placement point on a mini pick-and-place unit when changing product sizes, using the 20 mm adjustment range to compensate for different part heights.
Set the open position of a small diverter gate on a conveyor line precisely, allowing quick tweaks to the gate angle as product flow requirements change.
Choose the SCJ32 when you need a stroke-adjustable cylinder in a tight envelope. If you require more push force, step up to the SCJ40, which provides 628 N at the same 0.5 MPa pressure. For applications where the stroke is fixed and never needs field adjustment, the standard SC32 fixed-stroke cylinder is a simpler, cost-effective alternative. When replacing an existing unit, match the bore (32 mm), nominal stroke (20 mm), adjust range (-20), and PT port thread to ensure identical fit and function.
Adjustable-stroke checklist
At 0.5 MPa it generates 402 N pushing and 345 N pulling. The maximum push force at the 0.9 MPa operating limit is 724 N. The force is identical to a fixed-stroke SC32 of the same bore.
Yes, if the mounting and porting match. The SCJ32X20-20 has the same body length and mounting dimensions as an SC32, but adds a rear adjusting screw. Ensure you have clearance for the screw and that the 20 mm adjustment range suits your process.
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