Airtac SCJ32 Standard Cylinder SCJ32X275-40S
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X275-40S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 40 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-40 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X275-40S
The SCJ32X275-40S is a 32 mm bore double-acting, single-rod cylinder with a field-adjustable stroke end, letting you fine-tune the 275 mm nominal stroke by up to 40 mm via the rear-cap screw. This model delivers 402 N of push force at 0.5 MPa and uses a 12 mm diameter piston rod with an M10x1.25 knuckle thread, making it a precise actuator for light positioning tasks.
A built-in magnet is fitted as standard on this -S variant, so CMSG/DMSG/EMSG reed and solid-state sensors clamp directly onto the tie-rod barrel for non-contact position feedback. The cylinder body length A(SCJ) is 182 mm plus stroke, and the 21 mm air cushion at each end decelerates the piston quietly. Operating pressure spans 0.15–1.0 MPa with a standard PT1/8 port.
Airtac SCJ32 Standard Cylinder SCJ32X275-40S Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X275-40S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 275 mm |
| Stroke adjustment | Up to 40 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 SCJ32X275-40S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×275 | Nominal (maximum) stroke length in mm. |
| -40 | 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 SCJ32X275-40S Is Used
Commissioning & Setup
During machine commissioning, the 40 mm adjust range lets technicians dial in the exact end-stop position without re-plumbing or swapping cylinders, speeding up line start-up.
Product Format Changeover
On a packaging line, quickly adjust the stroke end to accommodate different box sizes or pallet patterns by turning the rear screw, minimizing changeover downtime.
Wear Compensation
In clamping or pressing fixtures, the adjustable stroke can take up mechanical wear on tooling or seals over time, maintaining consistent contact without reprogramming the machine.
Is the Airtac SCJ32 Standard Cylinder SCJ32X275-40S the Right Cylinder?
Choose the SCJ32 when you need a compact, adjustable stroke in the 402 N push class at 0.5 MPa. If your force requirement grows, stepping up to the 40 mm bore provides 628 N of push. For applications that do not require field-adjustable stroke, the fixed-stroke SC32 series offers a simpler, slightly shorter body. A direct replacement must match the 32 mm bore, 275 mm nominal stroke, 40 mm adjustable range, PT1/8 thread, and the built-in magnet. Since the stroke is 275 mm, ensure the rod is well-guided if side loads are present; an external guide rail or a guided cylinder may be needed to prevent rod bending.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-40)
- ✓ 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 SCJ32X275-40S FAQ
A rear-cap adjusting screw limits the piston's stroke end. You can shorten the 275 mm nominal stroke by up to 40 mm in the field. It sets the mechanical stop position, not the speed or force.
At 0.5 MPa, the push force is 402 N and the pull force is 345 N (due to the 12 mm rod area). At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 804 N.
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