Airtac SCJ100 Standard Cylinder SCJ100X500-20S
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X500-20S 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. Ø100mm bore, 500mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke500 mm
- Stroke adjust-20 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X500-20S
The SCJ100X500-20S delivers 3927 N of push force at 0.5 MPa from a 100 mm bore, with a 25 mm piston rod and PT1/2 ports. Its rear-cap adjusting screw provides up to 20 mm of stroke-end reduction, letting you fine-tune the final position on the machine without swapping the cylinder or adding external hard stops.
This double-acting, single-rod cylinder features a built-in magnet (suffix -S), allowing direct mounting of CMSG/DMSG/EMSG reed or solid-state sensors along the tie-rod barrel for precise position feedback. The adjustable air cushion decelerates the piston smoothly, and the body length A(SCJ) is 245 mm, providing a compact footprint for its 500 mm nominal stroke.
Airtac SCJ100 Standard Cylinder SCJ100X500-20S Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X500-20S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 500 mm |
| Stroke adjustment | Up to 20 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/2 |
| Rod thread | M20×1.5 |
| 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, 29 mm |
| Max stroke | Up to 1500 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 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 SCJ100 Standard Cylinder SCJ100X500-20S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | 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 SCJ100 Standard Cylinder SCJ100X500-20S Is Used
Commissioning & Setup
The 20 mm adjustable stroke lets technicians dial in the exact end-stop position during machine commissioning, compensating for minor assembly tolerances without needing to re-machine mounting brackets.
Product Format Changeover
On a packaging line, quickly adjust the stroke end to accommodate a new box size. The 500 mm base stroke provides ample reach, while the screw adjustment handles the fine changeover without any disassembly.
Sensor-Controlled Clamping
The built-in magnet works with CMSG sensors to confirm full extension. The adjustable stroke allows precise setting of a clamping force position, with the 3927 N push force at 0.5 MPa providing a secure hold.
Is the Airtac SCJ100 Standard Cylinder SCJ100X500-20S the Right Cylinder?
Choose the SCJ100X500-20S when you need a 500 mm stroke with field-adjustable end-position tuning. If your force requirement drops, the 80 mm bore SCJ series offers 2513 N of push force at 0.5 MPa. For a fixed, non-adjustable stroke, the standard SC100X500 is a simpler alternative. This model is a direct replacement for another AirTAC SCJ100X500-20S cylinder with a magnet, PT ports, and basic mounting.
For a 500 mm stroke, manage side loads carefully to prevent rod bending. An external guide rail or switching to a guided cylinder is recommended if the load is not perfectly axial. The built-in magnet eliminates the need for external sensor brackets, simplifying your control setup.
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 SCJ100 Standard Cylinder SCJ100X500-20S FAQ
At the standard 0.5 MPa operating pressure, the push force is 3927 N and the pull force is 3681 N. The maximum push force at 0.9 MPa is 7068 N. Because it is a single-rod cylinder, the push force is greater than the pull force due to the rod area on the return side.
A rear-cap screw lets you shorten the stroke end by up to 20 mm from the nominal 500 mm. Pick this SCJ model when you need to fine-tune the piston's stop position in the field, such as for wear take-up or format changes. If your application requires a single, fixed stroke length that never changes, the standard SC100X500 is the more cost-effective choice.
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