Airtac SCJ32 Standard Cylinder SCJ32X80-20
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X80-20 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, 80mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke80 mm
- Stroke adjust-20 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X80-20
The SCJ32X80-20 is a double-acting, single-rod pneumatic cylinder that puts stroke-end fine-tuning directly into the rear cap. Its 20 mm adjusting screw lets you dial in the exact stopping position without adding external hard stops, making commissioning and format changes on small-bore tooling far quicker. The 12 mm piston rod and M10x1.25 rod thread handle push forces up to 402 N at 0.5 MPa, while the 21 mm air cushion at each end protects the end caps from impact.
At a nominal 80 mm stroke, this cylinder operates comfortably within the 32 mm bore's 1000 mm maximum standard stroke. The body length A is 182 mm, and the tie-rod construction keeps it serviceable. It runs on standard filtered air (40 µm) from 0.15 to 1.0 MPa, with a piston speed range of 30–800 mm/s. A genuine AirTAC unit, it is a direct drop-in replacement for an existing SCJ32X80-20 of the same configuration.
Airtac SCJ32 Standard Cylinder SCJ32X80-20 Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X80-20 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 80 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.
Theoretical Output Force (Ø32mm)
| 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.
Model Code: Airtac SCJ32 Standard Cylinder SCJ32X80-20
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×80 | 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.
Where the Airtac SCJ32 Standard Cylinder SCJ32X80-20 Is Used
Commissioning & Fine-Tuning
The 20 mm rear screw allows engineers to precisely dial in the stroke end on a new assembly fixture without re-machining hard stops, speeding up initial machine setup.
Small-Part Ejection
Adjust the push-out stroke for different product heights on a conveyor line. The 402 N push force at 0.5 MPa easily handles lightweight plastic or cardboard items.
Wear Take-Up in Clamps
In a repetitive clamping operation, the adjusting screw can compensate for jaw or pad wear over time, maintaining consistent clamping pressure without replacing the cylinder.
Is the Airtac SCJ32 Standard Cylinder SCJ32X80-20 the Right Cylinder?
Choose the SCJ32X80-20 when you need a compact, adjustable end-stop for light pushing, clamping, or ejection tasks. If your force requirement grows, stepping up to the 40 mm bore (SCJ40) delivers 628 N push at 0.5 MPa, a 56% increase, while keeping the same PT1/4 port. For applications that do not require stroke adjustment, the fixed-stroke SC32X80 is a simpler, slightly shorter alternative. When replacing this cylinder, match the bore (32 mm), nominal stroke (80 mm), adjust range (20 mm), PT1/8 port thread, and basic mounting style exactly.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-20)
- ✓ Required force at your working pressure
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Set the rear adjusting screw, then lock it before running.
- check Adjust end cushion screws for smooth stops.
- check Use SCJ mounting accessory (FA / LB / TC / TCM1).
- check Installation by qualified personnel per AirTAC docs.
Airtac SCJ32 Standard Cylinder SCJ32X80-20 FAQ
It is a single-rod cylinder, so push and pull forces are different. At 0.5 MPa, the push force is 402 N and the pull force is 345 N. At the maximum operating pressure of 0.9 MPa, the push force reaches 724 N.
Yes, this is a direct replacement for an AirTAC SCJ32X80-20. Ensure your existing unit has the same 20 mm adjust range, PT1/8 ports, and basic mounting. The adjustable stroke feature is identical, so your current end-stop setting will be within the same adjustment window.
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