Airtac SCJ32 Standard Cylinder SCJ32X250-20
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X250-20 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 20 mm range without swapping the cylinder. Ø32mm bore, 250mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke250 mm
- Stroke adjust-20 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X250-20
The SCJ32X250-20 is a 32 mm bore double-acting single-rod cylinder with a field-adjustable stroke, letting you fine-tune the end position by up to 20 mm via a rear-cap screw. This model delivers 402 N of push force and 345 N of pull force at 0.5 MPa, making it a compact yet capable actuator for light positioning and clamping tasks.
Its 12 mm diameter piston rod and PT1/8 port thread keep the envelope small, while the 21 mm air cushion at each end protects the end caps during high-cycle operation. The body length A is 182 mm plus stroke, so the overall installed length stays manageable even with the added adjuster mechanism.
Airtac SCJ32 Standard Cylinder SCJ32X250-20 Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X250-20 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 250 mm |
| Stroke adjustment | Up to 20 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 SCJ32X250-20
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×250 | Nominal (maximum) stroke length in mm. |
| -20 | 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 SCJ32X250-20 Is Used
Commissioning Fine-Tuning
During machine setup, the 20 mm adjustment screw lets technicians dial in the exact stroke end without swapping cylinders or machining external stops.
Small Part Diverting
Adjust the stroke to match different lane widths on a conveyor diverter, accommodating product changeovers quickly on a packaging line.
Wear Take-Up
Compensate for seal or pad wear in clamping fixtures over time by slightly extending the effective stroke via the rear adjuster.
Is the Airtac SCJ32 Standard Cylinder SCJ32X250-20 the Right Cylinder?
Choose the SCJ32 when you need a 32 mm bore with push force up to 724 N at 0.9 MPa. If your load requires more force, step up to the 40 mm bore SCJ40, which provides 628 N of push at 0.5 MPa. For applications that do not require stroke-end adjustment, the fixed-stroke SC32 is a simpler alternative. To replace this model, match the 32 mm bore, 250 mm nominal stroke, 20 mm adjust range, PT1/8 port, basic mounting, and no magnet.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-20)
- ✓ 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 SCJ32X250-20 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, the push force reaches 724 N. The theoretical maximum force at 1.0 MPa is 82 kgf.
Yes, provided the bore (32 mm), nominal stroke (250 mm), port thread (PT1/8), and mounting style match. The SCJ32X250-20 adds a rear adjusting screw that shortens the stroke end by up to 20 mm, so the body is slightly longer than the fixed-stroke version.
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