Airtac SCJ32 Standard Cylinder SCJ32X75-40STC
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X75-40STC 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, 75mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke75 mm
- Stroke adjust-40 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X75-40STC
The SCJ32X75-40 is a 32mm bore double-acting, single-rod cylinder with a rear adjusting screw that provides up to 40mm of field-adjustable stroke-end reduction, letting you fine-tune the 75mm nominal stroke without changing the cylinder. It delivers 402N of push force at 0.5MPa and 724N at the maximum operating pressure of 0.9MPa, using a 12mm diameter piston rod.
This model is equipped with a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors, and a centre trunnion (TC) mount that ships with the TCM1 bracket (order code F-SC32TC), allowing the cylinder to pivot during operation. The PT1/8 port and M10x1.25 rod thread are standard, and the body length A(SCJ) is 182mm, with a 21mm air cushion for smooth deceleration.
Airtac SCJ32 Standard Cylinder SCJ32X75-40STC Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X75-40STC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 75 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 SCJ32X75-40STC
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×75 | 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 SCJ32X75-40STC Is Used
Commissioning & Setup
The 40mm adjustment range allows technicians to precisely dial in the stroke end position during machine commissioning, eliminating the need for shims or external hard stops on compact assembly fixtures.
Small Part Sorting
In a conveyor divert system, the adjustable stroke lets you fine-tune the pusher's end point to handle different package widths without swapping the cylinder, saving changeover time.
Wear Compensation
On a clamping station, the stroke can be periodically adjusted outward to compensate for jaw or pad wear, maintaining consistent clamping force without replacing the actuator.
Is the Airtac SCJ32 Standard Cylinder SCJ32X75-40STC the Right Cylinder?
Choose the SCJ32 when you need a compact, adjustable-stroke cylinder in the 32mm bore class. If your force requirement exceeds the 402N push at 0.5MPa, step up to the SCJ40, which provides 628N. For applications requiring a fixed, non-adjustable stroke, the standard SC series is a more economical choice. This SCJ32X75-40 with magnet and trunnion mount is a direct replacement for any AirTAC SCJ32 of the same 75mm nominal stroke and 40mm adjust range, provided the port thread (PT) and TC mounting match.
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 SCJ32X75-40STC FAQ
The push force is 402N at 0.5MPa and 724N at 0.9MPa. The pull force is lower due to the single 12mm rod, providing 345N at 0.5MPa. The adjusting screw changes only the stroke end position, not the force output.
Yes, if you need field adjustability. The SCJ32 shares the same bore and rod dimensions as the SC32. Ensure the nominal stroke (75mm), port thread (PT1/8), and mounting (TC) match your existing setup. The adjustable screw adds a small amount to the overall body length.
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