Airtac SCJ32 Standard Cylinder SCJ32X125-75S
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X125-75S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 75 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-75 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X125-75S
The SCJ32X125-75S puts a 75 mm field-adjustable stroke-end range onto a 125 mm nominal stroke, all in a 32 mm bore tie-rod body that delivers 402 N of push at 0.5 MPa. Its 12 mm rod and PT1/8 ports keep the package compact while the rear adjusting screw lets you dial in the exact end position during commissioning or format changeovers without swapping the cylinder.
A built-in magnet is included with this -S model, so CMSG/DMSG/EMSG sensors clamp directly onto the barrel for reliable end-of-stroke sensing. The cylinder uses the standard TPU seal set for -20 to +70 °C operation and comes with PT threads. Body length A(SCJ) is 182 mm, and the adjustable cushion helps decelerate the piston smoothly across the full 30-800 mm/s speed range.
Airtac SCJ32 Standard Cylinder SCJ32X125-75S Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X125-75S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 125 mm |
| Stroke adjustment | Up to 75 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 SCJ32X125-75S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×125 | Nominal (maximum) stroke length in mm. |
| -75 | 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 SCJ32X125-75S Is Used
Commissioning & Setup
Fine-tune the 125 mm stroke end point across a 75 mm range during machine commissioning, eliminating the need to swap cylinders or fabricate custom mechanical stops.
Format Changeovers
Adjust the stroke end in seconds when packaging lines switch between product sizes, allowing a single actuator to handle multiple formats without mechanical rework.
Wear Compensation
Take up mechanical play or tooling wear over time by advancing the stroke end with the rear screw, maintaining precise positioning without replacing the cylinder.
Is the Airtac SCJ32 Standard Cylinder SCJ32X125-75S the Right Cylinder?
Choose this 32 mm bore when 402 N of push at 0.5 MPa covers your load. If you need more force, stepping up to the SCJ40 series provides 628 N push at the same pressure. The 75 mm adjustment range is ideal for applications where the stroke end must be tuned across a wide window; for a narrower tuning band, the SCJ32X125-20 or -30 variants reduce cost and overall length. When the stroke is fixed and never needs field changes, a standard SC32X125 is a simpler, lower-cost alternative.
For replacement, match an AirTAC SCJ32X125-75S with the same bore, 125 mm nominal stroke, 75 mm adjust range, PT ports, basic mounting, and built-in magnet. At 125 mm stroke, rod bending is not a primary concern for most axial loads, but if the application introduces side forces, add an external guide rail to protect the rod and bearing.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-75)
- ✓ 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 SCJ32X125-75S FAQ
At 0.5 MPa, the push force is 402 N and the pull force is 345 N. At the maximum operating pressure of 0.9 MPa, push force reaches 724 N. The push force is greater than the pull force because this is a single-rod cylinder.
A rear-cap adjusting screw lets you shorten the stroke end by up to 75 mm from the nominal 125 mm maximum. Pick the SCJ when you need to fine-tune the stroke position in the field—for commissioning, format changes, or wear take-up. Choose a fixed-stroke SC when the stroke is permanently set and you want a simpler, lower-cost cylinder.
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