Airtac SCJ32 Standard Cylinder SCJ32X125-40
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X125-40 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, 125mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke125 mm
- Stroke adjust-40 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X125-40
The SCJ32X125-40 is a double-acting, single-rod tie-rod cylinder that puts a 40 mm field-adjustable stroke range at your fingertips. With a 32 mm bore delivering 402 N of push force at 0.5 MPa (724 N at 0.9 MPa), it lets you fine-tune the stroke end position via the rear cap screw without swapping the cylinder or adding external hard stops. The 12 mm rod and PT1/8 ports keep the unit compact for light automation tasks.
Because the stroke is adjustable, you can dial in the exact end position during commissioning or compensate for tooling wear over time. The body length A(SCJ) is 182 mm, and the adjustable air cushion helps decelerate the piston quietly. This model comes in the basic configuration with TPU seals, PT threads, and no magnet, ready for standard industrial air service from -20 to +70 °C.
Airtac SCJ32 Standard Cylinder SCJ32X125-40 Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X125-40 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 125 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 SCJ32X125-40
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×125 | 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 SCJ32X125-40 Is Used
Commissioning & Setup
Fine-tune the end-of-stroke position during machine commissioning without re-plumbing or machining custom stops. The 40 mm adjust range lets technicians quickly dial in the exact travel needed for a new tooling setup.
Wear Compensation
In light pressing or clamping fixtures, use the rear adjusting screw to take up mechanical wear on contact surfaces or tooling. This maintains consistent clamping force without replacing the cylinder or adding shims.
Small Part Diverter Gates
Adjust the stroke end to fine-tune the open/closed position of a diverter gate on a compact conveyor line. The 125 mm nominal stroke provides ample travel, while the 40 mm adjustment lets you match the gate angle precisely to different product widths.
Is the Airtac SCJ32 Standard Cylinder SCJ32X125-40 the Right Cylinder?
Choose the SCJ32 when you need a compact, adjustable-stroke cylinder in the 402 N push class. If your application demands more force, step up to the SCJ40 which provides 628 N of push at the same 0.5 MPa. For applications that do not require stroke adjustability, the fixed-stroke SC32 series offers a simpler, more cost-effective alternative. This SCJ32X125-40 is a direct replacement for any AirTAC SCJ32 with a 125 mm nominal stroke, 40 mm adjust range, PT ports, and basic mounting.
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 SCJ32X125-40 FAQ
At 0.5 MPa, the 32 mm bore generates 402 N of push force and 345 N of pull force. At the maximum operating pressure of 0.9 MPa, push force reaches 724 N. The pull force is lower because the 12 mm piston rod reduces the effective area on the return stroke.
Yes, if your current cylinder is an AirTAC SC32 with a 125 mm stroke. The SCJ32X125-40 has the same bore, rod size, and port threads (PT1/8), but adds a rear adjusting screw that lets you shorten the stroke end by up to 40 mm. The body length is slightly longer to accommodate the mechanism, so check your available space.
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