Airtac SCJ32 Standard Cylinder SCJ32X125-50SN
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X125-50SN is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 50 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-50 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X125-50SN
The SCJ32X125-50SN is a 32 mm bore double-acting single-rod cylinder with a rear adjusting screw that provides up to 50 mm of field-adjustable stroke-end reduction. This NBR-sealed variant delivers 402 N of push force at 0.5 MPa and handles a maximum operating pressure of 1.0 MPa, making it suitable for light automation tasks where the end position needs fine-tuning without swapping the cylinder.
A built-in magnet allows direct mounting of CMSG/DMSG/EMSG sensors for piston position feedback. The 12 mm diameter piston rod, M10x1.25 rod thread, and PT1/8 port thread match the standard SCJ32 platform, while the 21 mm air cushion at each end ensures smooth deceleration. The body length A is 182 mm, providing a compact footprint for space-constrained commissioning and format-change applications.
Airtac SCJ32 Standard Cylinder SCJ32X125-50SN Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X125-50SN |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 125 mm |
| Stroke adjustment | Up to 50 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 SCJ32X125-50SN
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×125 | Nominal (maximum) stroke length in mm. |
| -50 | 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 SCJ32X125-50SN Is Used
Commissioning Fine-Tuning
During machine setup, the 50 mm adjustment screw lets technicians dial in the exact stroke end for grippers or ejectors without physical stops, speeding up the commissioning process on small assembly cells.
Wear Take-Up on Stops
On packaging lanes, the adjustable stroke compensates for mechanical wear on end stops over time. Operators can tweak the screw to restore precise positioning without dismantling the actuator.
Format Changeover
For machines running multiple product sizes, the quick screw adjustment allows a single cylinder to handle different stroke lengths, eliminating the need to stock multiple fixed-stroke cylinders for each format.
Is the Airtac SCJ32 Standard Cylinder SCJ32X125-50SN the Right Cylinder?
For applications needing more force, stepping up to the SCJ40 series provides 628 N of push force at 0.5 MPa from a 40 mm bore. If the stroke adjustment is unnecessary and a fixed stroke is acceptable, the standard SC32 cylinder offers the same bore and mounting footprint. This SCJ32X125-50SN model is a direct replacement for any AirTAC SCJ32 cylinder with a 125 mm nominal stroke, 50 mm adjust range, PT ports, NBR seals, and a magnet.
The 125 mm stroke is well within the 1000 mm maximum standard stroke for a 32 mm bore. The NBR seal material offers good wear resistance for general-purpose pneumatic service with filtered air.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-50)
- ✓ 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 SCJ32X125-50SN FAQ
At 0.5 MPa, this 32 mm bore cylinder generates 402 N of push force and 345 N of pull force. At the maximum operating pressure of 1.0 MPa, the theoretical push force is 804 N. The adjusting screw does not alter the output force.
Yes, if you need the 50 mm stroke adjustment feature. It matches the SC32 footprint and mounting. Ensure your replacement matches the 125 mm nominal stroke, NBR seals, and PT ports. The built-in magnet requires sensor-compatible mounts if you are using position feedback.
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