Airtac SCJ32 Standard Cylinder SCJ32X275-20S
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X275-20S 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, 275mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke275 mm
- Stroke adjust-20 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X275-20S
The SCJ32X275-20S is a 32 mm bore, double-acting single-rod pneumatic cylinder with a rear adjusting screw that provides up to 20 mm of field-adjustable stroke-end reduction. This model delivers 402 N of push force at 0.5 MPa and is built with a 12 mm diameter rod, PT1/8 ports, and a 21 mm air cushion for smooth deceleration.
A built-in magnet (suffix -S) allows direct mounting of CMSG/DMSG/EMSG reed or solid-state sensors along the tie-rod barrel for reliable end-of-stroke detection. The nominal 275 mm stroke is well within the 1000 mm maximum standard stroke for this bore, and the body length A(SCJ) is 182 mm plus stroke, making it a compact solution for commissioning and format-change tasks.
Airtac SCJ32 Standard Cylinder SCJ32X275-20S Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X275-20S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 275 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 SCJ32X275-20S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×275 | 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 SCJ32X275-20S Is Used
Commissioning Fine-Tuning
The 20 mm rear screw adjustment lets technicians dial in the exact stroke end position on a new assembly line without removing the cylinder or adding external hard stops, speeding up machine runoff.
Packaging Format Changeover
When a packaging machine switches between box sizes, the SCJ32X275-20S stroke can be quickly shortened to match the new carton width, reducing downtime compared to changing fixed-stroke cylinders.
Wear Take-Up in Clamping
In a repetitive clamping fixture, the adjustable stroke compensates for pad wear over time. The operator simply turns the rear screw to restore full clamping force without disassembling the tooling.
Is the Airtac SCJ32 Standard Cylinder SCJ32X275-20S the Right Cylinder?
Choose the SCJ32 when you need to fine-tune the stroke end position during setup without swapping cylinders. If your force requirement is higher, step up to the SCJ40 bore which provides 628 N of push force at the same 0.5 MPa. For applications that do not require stroke adjustment, the fixed-stroke SC32 cylinder is a simpler, cost-effective alternative. When replacing, match the 32 mm bore, 275 mm nominal stroke, 20 mm adjust range, PT port thread, and the magnet-equipped -S configuration. For strokes over 300 mm, consider an external guide to prevent rod bending under side loads.
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 SCJ32X275-20S FAQ
At 0.5 MPa, the push force is 402 N and the pull force is 345 N. The push force is higher because the single-rod design means air pressure acts on the full bore area, while the pull side has the rod area subtracted. At the maximum operating pressure of 0.9 MPa, the push force reaches 724 N.
A standard SC32 fixed-stroke cylinder lacks the rear adjusting screw, so you would lose the ability to fine-tune the stroke end on the machine. For a direct replacement, you need another SCJ32 adjustable-stroke cylinder with the same 275 mm nominal stroke, 20 mm adjust range, PT ports, and magnet option.
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