Airtac SCJ32 Standard Cylinder SCJ32X400-50S
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X400-50S 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, 400mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke400 mm
- Stroke adjust-50 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X400-50S
The SCJ32X400-50S is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke, letting you fine-tune the end position by up to 50 mm without swapping the unit. Its 12 mm rod and 21 mm air cushion deliver smooth deceleration, while the 402 N push force at 0.5 MPa (724 N at 0.9 MPa) handles moderate positioning and clamping tasks.
This model includes a built-in magnet (-S suffix), so CMSG/DMSG/EMSG reed or solid-state sensors clamp directly onto the tie-rod barrel for end-of-stroke confirmation. The body length A is 182 mm, and the PT1/8 port supplies the filtered air. The adjustable screw sets only the stroke end—it is not a force or speed regulator.
Airtac SCJ32 Standard Cylinder SCJ32X400-50S Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X400-50S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 400 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 SCJ32X400-50S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×400 | 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 SCJ32X400-50S Is Used
Commissioning & Setup
Fine-tune the end-stop by up to 50 mm during machine bring-up without draining the air system or removing the cylinder, speeding up installation.
Product Changeover
Adjust the stroke end to match a new product size on a packaging or assembly line, eliminating the need to stock multiple fixed-stroke cylinders.
Wear Compensation
Take up mechanical play or seal wear over time by slightly extending the effective stroke, maintaining consistent contact or clamping force.
Is the Airtac SCJ32 Standard Cylinder SCJ32X400-50S the Right Cylinder?
Choose the SCJ32X400-50S when you need a 400 mm nominal stroke with up to 50 mm of on-machine adjustment for commissioning or format changes. If 402 N push is marginal, stepping up to the SCJ40 series provides 628 N push at the same 0.5 MPa. For applications needing a fixed, unadjustable stroke, the standard SC32 cylinder is the direct alternative. This SCJ32 adjustable-stroke cylinder replaces another AirTAC SCJ32 with the same 400 mm nominal stroke, 50 mm adjustment range, PT ports, and the -S magnet option. For strokes of 300 mm or more, ensure the rod is guided externally or use a guided cylinder if side loads are present to prevent rod bending.
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 SCJ32X400-50S FAQ
At 0.5 MPa, it delivers 402 N pushing and 345 N pulling. The push force increases to 724 N at the maximum operating pressure of 0.9 MPa.
Yes, if you need field adjustability. The SCJ32X400-50S matches the SC32 bore and rod dimensions but adds a rear adjusting screw for a 50 mm stroke-end range. Ensure the longer body length A (182 mm) fits your mounting space.
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