Airtac SCJ32 Standard Cylinder SCJ32X125-50
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X125-50 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 SCJ32X125-50
The SCJ32X125-50 is a double-acting, single-rod pneumatic cylinder that puts stroke-end fine-tuning directly on the machine. Its rear-cap adjusting screw provides up to 50 mm of retraction adjustment, so you can dial in the exact 125 mm nominal stroke for commissioning trials or format changeovers without swapping the cylinder or adding external hard stops.
At 0.5 MPa this 32 mm bore delivers 402 N of push force and 345 N on the pull stroke. The 12 mm diameter piston rod, 21 mm air cushion, and a compact 182 mm body length make it a practical choice for light clamping, sorting gates, and small transfer mechanisms where space is tight and stroke precision matters.
Airtac SCJ32 Standard Cylinder SCJ32X125-50 Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X125-50 |
|---|---|
| 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 SCJ32X125-50
| 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 SCJ32X125-50 Is Used
Commissioning & Setup
Fine-tune the retracted position during machine build-out. The 50 mm screw adjustment lets technicians dial in sensor flags and gripper pick points without re-machining brackets.
Small-Part Divert Gates
Adjust the gate opening stroke on a packaging line for different product widths. The 125 mm nominal stroke with 50 mm of trim handles multiple SKUs with one cylinder part number.
Wear Take-Up on Clamps
Compensate for jaw or pad wear in a light-duty clamping fixture. The screw adjusts the clamp's closed position over time, maintaining consistent grip force without shims.
Is the Airtac SCJ32 Standard Cylinder SCJ32X125-50 the Right Cylinder?
Choose the SCJ32X125-50 when you need a stroke that can be field-trimmed by up to 50 mm. If the 402 N push force at 0.5 MPa is marginal, stepping up to the 40 mm bore SCJ40 series raises push force to 628 N. For applications that never need stroke adjustment, the fixed-stroke SC32X125 saves cost and length. When replacing an existing unit, match the bore (32 mm), nominal stroke (125 mm), adjust range (50 mm), PT1/8 port thread, and basic mounting style. The cylinder accepts FA, LB, or TC mounting kits from the SCJ subset if your fixture changes later.
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 SCJ32X125-50 FAQ
At 0.5 MPa the cylinder pushes with 402 N and pulls with 345 N. The maximum operating pressure of 1.0 MPa yields 804 N push and 690 N pull. Push force is higher because the single rod reduces the piston area on the pull side.
Yes, if the mounting and port match. The SCJ32X125-50 has the same bore, rod, and port (PT1/8) as an SC32, but the body is slightly longer to house the adjusting screw. Ensure you have clearance behind the rear cap for the screw and lock nut.
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