Airtac SCJ32 Standard Cylinder SCJ32X450-75
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X450-75 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, 450mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke450 mm
- Stroke adjust-75 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X450-75
The SCJ32X450-75 is a 32 mm bore double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end. A rear-cap adjusting screw lets you shorten the stroke by up to 75 mm, giving an effective working range from 375 mm to the full 450 mm nominal stroke without changing the cylinder body. This model uses a 12 mm diameter piston rod and PT1/8 port threads, delivering 402 N of push force and 345 N of pull force at 0.5 MPa.
With a 21 mm air cushion at each end and a body length A of 182 mm, the SCJ32X450-75 is built on the proven SC tie-rod platform. The screw sets only the stroke end position; it is not a force or speed regulator. This genuine AirTAC unit is ideal for commissioning trials, format changeovers, and applications where the end stop must be dialled in precisely after installation.
Airtac SCJ32 Standard Cylinder SCJ32X450-75 Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X450-75 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 450 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 SCJ32X450-75
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×450 | 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 SCJ32X450-75 Is Used
Commissioning & Setup
Dial in the exact end-stop position during machine commissioning without swapping cylinders or machining external hard stops. The 75 mm adjustment range allows fine-tuning for optimal part placement.
Wear Compensation
In automated assembly fixtures, use the adjusting screw to take up mechanical wear on tooling or gripper fingers over time, maintaining consistent clamping or pressing depth without reprogramming.
Format Changeover
Quickly adapt the stroke end for different product sizes on a packaging or labelling line. The operator can adjust the rear screw to set a new stop position in seconds, reducing downtime between batches.
Is the Airtac SCJ32 Standard Cylinder SCJ32X450-75 the Right Cylinder?
Choose the SCJ32X450-75 when you need to fine-tune the stroke end position within a 75 mm window on a 32 mm bore platform. If 402 N of push force at 0.5 MPa is insufficient, stepping up to the 40 mm bore SCJ40 series provides 628 N of push force. For applications requiring a fixed, non-adjustable stroke, the standard SC32 series offers a simpler, more cost-effective solution. The adjustable stroke is purely mechanical via the rear screw; it does not provide mid-stroke positioning or electronic control.
For a 450 mm stroke, be mindful of side loading on the 12 mm rod. If the load is not guided externally, consider adding an external guide rail or switching to a guided cylinder to prevent rod bending and premature seal wear. As a direct replacement, match the 32 mm bore, 450 mm nominal stroke, 75 mm adjust range, PT port thread, and basic mounting style.
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 SCJ32X450-75 FAQ
At 0.5 MPa, this 32 mm bore cylinder delivers 402 N of push force (using the full piston area) and 345 N of pull force (accounting for the 12 mm rod area). At the maximum operating pressure of 0.9 MPa, the push force reaches 724 N.
Yes, if you need the adjustable stroke feature. The SCJ32X450-75 shares the same bore, nominal stroke, port size (PT1/8), and tie-rod body design as the SC32 series. Ensure the 75 mm rear adjust screw does not interfere with your mounting space, and match the port thread and mounting type for a direct retrofit.
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