Airtac SCJ32 Standard Cylinder SCJ32X400-50
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X400-50 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, 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 SCJ32X400-50
The SCJ32X400-50 is a 32 mm bore double-acting single-rod cylinder that lets you dial the stroke end position back by up to 50 mm using the rear adjusting screw, so the effective stroke is field-tunable from 350 mm to the nominal 400 mm. With a 12 mm piston rod and PT1/8 ports, it delivers 402 N of push force at 0.5 MPa and 724 N at the 0.9 MPa maximum operating pressure, making it a capable mid-stroke actuator for light automation tasks.
Built on the proven SC tie-rod platform, this genuine AirTAC cylinder includes an adjustable air cushion (21 mm cushion length) for smooth deceleration. The body length A(SCJ) is 182 mm plus stroke, and the standard TPU seals cover a -20 to +70 °C working range. The 50 mm adjustment range is ideal for commissioning trials, format changeovers, or taking up mechanical wear without replacing the cylinder or adding external hard stops.
Airtac SCJ32 Standard Cylinder SCJ32X400-50 Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X400-50 |
|---|---|
| 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 SCJ32X400-50
| 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 SCJ32X400-50 Is Used
Commissioning & Setup
The 50 mm rear-screw adjustment lets technicians dial in the exact stroke end position during machine commissioning without swapping cylinders or machining custom stops, speeding up line start-up.
Format Changeovers
On packaging or sorting lines that handle different product sizes, operators can quickly re-set the cylinder stroke to match a new format, reducing changeover downtime.
Wear Take-Up
As tooling or gripper pads wear over time, the adjustable stroke end can be extended slightly to compensate, maintaining precise part engagement without replacing the actuator.
Is the Airtac SCJ32 Standard Cylinder SCJ32X400-50 the Right Cylinder?
Choose the SCJ32X400-50 when you need a 32 mm bore with a 400 mm nominal stroke and the ability to fine-tune the end position by up to 50 mm on the machine. If you need more push force, step up to the 40 mm bore SCJ40 series, which provides 628 N at 0.5 MPa. For applications where the stroke never needs field adjustment, the fixed-stroke SC32X400 reduces cost and overall length slightly. This model is a direct dimensional replacement for another AirTAC SCJ32X400-50 with PT threads and basic mounting; when replacing, match the bore, nominal stroke, and the -50 adjust range. For strokes of 400 mm, watch for side-loading on the 12 mm rod—consider an external linear guide or a guided cylinder if the load is not perfectly axial.
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 SCJ32X400-50 FAQ
At 0.5 MPa the push force is 402 N and the pull force is 345 N (pull is lower because the 12 mm rod reduces the piston area on the return side). At the maximum operating pressure of 0.9 MPa, push force reaches 724 N.
Yes, if you need the adjustable stroke feature. The SCJ32X400-50 shares the same bore, port size (PT1/8), and rod dimensions as an SC32, but the body is slightly longer to house the adjusting screw. Ensure your mounting arrangement can accept the extra length and that the -50 adjustment range suits your process.
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