Airtac SCJ32 Standard Cylinder SCJ32X40-40S
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X40-40S 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, 40mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke40 mm
- Stroke adjust-40 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X40-40S
The SCJ32X40-40S is a double-acting, single-rod pneumatic cylinder that puts field-adjustable stroke control into a compact 32 mm bore package. A rear-cap adjusting screw lets you shorten the stroke end by up to 40 mm without removing the cylinder, delivering 402 N of push force at 0.5 MPa (724 N at the 0.9 MPa maximum operating pressure). The 12 mm diameter piston rod and PT1/8 port thread keep the unit light and responsive for smaller automation tasks.
This model includes a built-in magnet (-S suffix), so CMSG, DMSG, or EMSG solid-state sensors clamp directly onto the tie-rod barrel for reliable end-of-stroke sensing. The adjustable air cushion (21 mm long) decelerates the piston smoothly, and the entire assembly operates on standard 40 µm filtered air from -20 to +70 °C. The body length A(SCJ) is 182 mm, making it easy to fit into tight machine envelopes where fixed-stroke cylinders would require external hard stops.
Airtac SCJ32 Standard Cylinder SCJ32X40-40S Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X40-40S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 40 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 SCJ32X40-40S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×40 | 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 SCJ32X40-40S Is Used
Commissioning & Fine-Tuning
During machine setup, the 40 mm adjustment range allows engineers to dial in the exact stroke end position without fabricating shims or moving external stops. The built-in magnet provides immediate sensor feedback as the stroke is changed.
Small-Part Ejector Stroke Adjustment
In pick-and-place or sorting units, the SCJ32X40-40S can be adjusted to compensate for different part heights or to reduce impact force on delicate components by shortening the stroke end, all while the CMSG sensor confirms retraction.
Wear Take-Up on Clamp Mechanisms
For light clamping or pressing fixtures, the rear adjusting screw can be advanced over time to take up mechanical wear in the linkage, maintaining consistent clamp force without reprogramming the machine controller.
Is the Airtac SCJ32 Standard Cylinder SCJ32X40-40S the Right Cylinder?
Choose the SCJ32 when your application needs a light, responsive cylinder with the flexibility to fine-tune the stroke end position. If you require more push force, stepping up to the 40 mm bore SCJ40 delivers 628 N at 0.5 MPa. For applications where the stroke is permanently fixed and never needs adjustment, the standard SC32 fixed-stroke cylinder is a simpler, cost-effective alternative. When replacing an existing unit, match the 32 mm bore, 40 mm nominal stroke, 40 mm adjustment range, PT1/8 thread, basic mounting, and the built-in magnet (S) to ensure identical fit and sensor compatibility.
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 SCJ32X40-40S FAQ
The output force depends only on the bore, rod, and air pressure—not the stroke adjustment. At 0.5 MPa, it generates 402 N pushing and 345 N pulling. At the maximum operating pressure of 0.9 MPa, the push force reaches 724 N. The adjusting screw only sets the stroke end position; it does not alter the cylinder's force output.
Yes, provided the mounting and port dimensions match. The SCJ32X40-40S has the same 32 mm bore and PT1/8 ports as an SC32, but the body is slightly longer to house the adjusting screw. You must also account for the 40 mm adjustable range when setting up the machine logic and physical space. The built-in magnet requires CMSG/DMSG/EMSG sensors if you need electrical position feedback.
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