Airtac SCJ32 Standard Cylinder SCJ32X250-40S
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X250-40S 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, 250mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke250 mm
- Stroke adjust-40 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X250-40S
The SCJ32X250-40S is a 32mm bore, double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end. A rear-cap screw provides up to 40mm of adjustment, letting you fine-tune the 250mm nominal stroke for commissioning or format changes without swapping the cylinder. Its 12mm diameter piston rod delivers 402N of push force and 345N of pull force at 0.5MPa.
This model includes a built-in magnet (-S), so CMSG/DMSG/EMSG reed and solid-state sensors can be clamped directly onto the tie-rod barrel for non-contact position sensing. The cylinder body length is 182mm (A dimension), and it uses PT1/8 ports with an M10x1.25 rod thread. The adjustable air cushion decelerates the piston smoothly over the final 21mm of travel.
Airtac SCJ32 Standard Cylinder SCJ32X250-40S Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X250-40S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 250 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 SCJ32X250-40S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×250 | 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 SCJ32X250-40S Is Used
Commissioning & Setup
The 40mm adjustment screw lets technicians dial in the exact stroke end during machine commissioning, eliminating the need for external hard stops on compact 32mm bore actuators.
Small-Part Diverter Gates
Fine-tune the gate opening on a conveyor diverter for different product widths. The built-in magnet provides end-of-stroke confirmation to the PLC via a DMSG sensor.
Wear Take-Up on Clamps
In a small clamping fixture, the adjustable stroke compensates for jaw wear over time, maintaining consistent clamping force without reprogramming the machine.
Is the Airtac SCJ32 Standard Cylinder SCJ32X250-40S the Right Cylinder?
Choose the SCJ32X250-40S when you need a compact, adjustable end-stop in the 32mm bore class. If 402N of push force at 0.5MPa is insufficient, stepping up to the 40mm bore provides 628N. For applications that do not require field adjustability, the fixed-stroke SC32X250 is a simpler alternative. This SCJ model is a direct replacement for another AirTAC SCJ32X250-40S cylinder with a magnet, PT ports, and basic mounting. At 250mm of stroke, ensure the rod is guided externally if significant side loads are present to prevent 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 SCJ32X250-40S FAQ
At the standard 0.5MPa operating pressure, it generates 402N of push force and 345N of pull force. The maximum push force at 0.9MPa is 724N. The force is identical to a fixed-stroke SC32 cylinder.
Yes, this is a direct replacement for any AirTAC SCJ32 cylinder with a 250mm nominal stroke, a 40mm adjustment range, a magnet, PT ports, and basic mounting. Confirm your adjust range and sensor type match.
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