Airtac SCJ32 Standard Cylinder SCJ32X350-40S
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X350-40S 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, 350mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke350 mm
- Stroke adjust-40 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X350-40S
The SCJ32X350-40S is a double-acting, single-rod pneumatic cylinder that delivers 402 N of push force at 0.5 MPa, making it a capable actuator for light automation tasks. Its defining feature is a rear-cap adjusting screw that provides a 40 mm field-adjustable stroke range, allowing machine builders to precisely dial in the stroke end position during commissioning or format changes without replacing the cylinder.
This model includes a built-in magnet (-S suffix), enabling direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors along the tie-rod barrel for reliable end-of-stroke detection. The 12 mm diameter piston rod and PT1/8 ports are standard for the 32 mm bore, and the adjustable air cushion helps decelerate the piston smoothly over the final 21 mm of travel.
Airtac SCJ32 Standard Cylinder SCJ32X350-40S Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X350-40S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 350 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 SCJ32X350-40S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×350 | 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 SCJ32X350-40S Is Used
Commissioning & Fine-Tuning
The 40 mm adjustment screw lets technicians precisely set the stroke end during machine setup, eliminating the need for trial-and-error with fixed hard stops.
Wear Compensation
On packaging lines, the stroke can be slightly extended over time to compensate for mechanical wear in grippers or linkages, maintaining consistent product handling without a cylinder swap.
Format Changeovers
Quickly adapt the cylinder's travel for different product sizes on a single machine. The built-in magnet allows sensors to be repositioned just as fast, confirming the new end position.
Is the Airtac SCJ32 Standard Cylinder SCJ32X350-40S the Right Cylinder?
Choose the SCJ32X350-40S when your application requires a compact actuator with a 350 mm nominal stroke that can be fine-tuned on the machine. If you need more force, stepping up to the SCJ40 series provides 628 N of push at the same pressure, while a fixed-stroke SC32 cylinder is a simpler, more economical choice if stroke adjustment is never required. This adjustable-stroke model is a direct replacement for another AirTAC SCJ32 cylinder with a 350 mm stroke and 40 mm adjust range, matching PT threads and the basic mounting configuration.
For a 350 mm stroke, be mindful of side-loading on the 12 mm rod. If the load is not guided externally, consider adding an external linear guide or switching to a guided cylinder to prevent rod bending and premature seal wear.
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 SCJ32X350-40S FAQ
A screw in the rear cap acts as an internal stop for the piston, allowing you to shorten the stroke end by up to 40 mm from the nominal 350 mm. It does not change the cylinder's bore or force output; it only sets the mechanical limit of the piston's travel in one direction.
At the standard 0.5 MPa operating pressure, the push force is 402 N and the pull force is 345 N. The maximum push force at 0.9 MPa is 724 N. The pull force is lower because the rod reduces the effective piston area on the return stroke.
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