Airtac SCJ32 Standard Cylinder SCJ32X500-20
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X500-20 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, 500mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke500 mm
- Stroke adjust-20 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X500-20
The SCJ32X500-20 is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, giving you up to 20 mm of fine-tuning via the rear-cap screw without removing the cylinder from the machine. With a 12 mm diameter piston rod and PT1/8 ports, it delivers 402 N of push force at 0.5 MPa, making it a compact but capable actuator for light positioning and gauging tasks.
This model uses the standard 500 mm nominal stroke, which is within the 1000 mm maximum for the 32 mm bore. The adjustable screw only sets the stroke end position—it does not alter the cylinder's force output or speed. Its 21 mm air cushion decelerates the piston quietly, and the tie-rod construction allows straightforward maintenance.
Airtac SCJ32 Standard Cylinder SCJ32X500-20 Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X500-20 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 500 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 SCJ32X500-20
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×500 | 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 SCJ32X500-20 Is Used
Commissioning & Setup
Fine-tune the end-of-stroke position during initial machine setup without swapping hard stops. The 20 mm adjustment range lets technicians quickly compensate for small assembly variations.
Wear Compensation
In clamping or pressing fixtures, use the rear screw to take up slack as contact surfaces wear over time, maintaining consistent clamping force without reprogramming the controller.
Light Part Stops
Adjust the stopping position of small components on a conveyor line. The 402 N push force at 0.5 MPa is ideal for lightweight gates and diverters in packaging systems.
Is the Airtac SCJ32 Standard Cylinder SCJ32X500-20 the Right Cylinder?
Choose the SCJ32X500-20 when you need to dial in a precise end stop during commissioning or after tooling wear. If you require more push force, step up to the SCJ40 series, which provides 628 N at the same 0.5 MPa. For applications where the stroke length is fixed and never changes, the standard SC32X500 fixed-stroke cylinder is a simpler, slightly shorter alternative. As a direct replacement, match the 32 mm bore, 500 mm nominal stroke, 20 mm adjustment range, PT ports, and basic mounting. For strokes of 500 mm, ensure the rod is adequately guided if significant side loads are present; an external guide rail or a guided cylinder will protect the rod bearing and seals from premature wear.
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 SCJ32X500-20 FAQ
At the standard 0.5 MPa operating pressure, this cylinder generates 402 N of push force and 345 N of pull force. The maximum push force at the 0.9 MPa operating limit is 724 N. The pull force is lower because the 12 mm rod reduces the effective piston area on the retract stroke.
Yes, provided the 20 mm adjustment screw does not interfere with your mounting. The SCJ32X500-20 has the same bore, nominal stroke, and port size as an SC32X500, but the body length A(SCJ) is 182 mm, which is slightly longer due to the rear adjustment mechanism. Ensure your mounting brackets and space envelope can accommodate this extra length.
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