Airtac SCJ40 Standard Cylinder SCJ40X500-100
The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X500-100 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 100 mm range without swapping the cylinder. Ø40mm bore, 500mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Nominal stroke500 mm
- Stroke adjust-100 mm
- Port sizePT1/4
- Rod threadM12×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ40 Standard Cylinder SCJ40X500-100
The SCJ40X500-100 is a double-acting, single-rod pneumatic cylinder that provides a 500 mm nominal stroke with a 100 mm field-adjustable range via a rear-cap screw. This lets you fine-tune the stroke end position to accommodate setup variations or wear without swapping the cylinder. At 0.5 MPa, it delivers 628 N of push force and 528 N on the pull stroke, using a 16 mm diameter piston rod.
This tie-rod cylinder has a PT1/4 port, M12x1.25 rod thread, and a 21 mm air cushion for smooth deceleration. The body length A(SCJ) is 185 mm, making it a compact choice for medium-stroke applications. The adjustable screw only sets the stroke end—it does not alter force or speed—and the cylinder requires an external lock or pilot-operated check valve if the load must be held without live air pressure.
Airtac SCJ40 Standard Cylinder SCJ40X500-100 Technical Specifications
| Model | Airtac SCJ40 Standard Cylinder SCJ40X500-100 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 500 mm |
| Stroke adjustment | Up to 100 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/4 |
| Rod thread | M12×1.25 |
| 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 1200 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 SCJ40 Standard Cylinder SCJ40X500-100
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×500 | Nominal (maximum) stroke length in mm. |
| -100 | 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 SCJ40 Standard Cylinder SCJ40X500-100 Is Used
Commissioning & Setup
The 100 mm adjustment range lets technicians dial in the exact end-stop position during machine commissioning without cutting brackets or adding external hard stops, saving hours of mechanical rework.
Product Changeover
On packaging or assembly lines, the adjustable stroke allows operators to quickly reset the cylinder's end position for different product sizes or formats, reducing downtime between batches.
Wear Compensation
In clamping or pressing fixtures, the rear screw can be advanced over time to compensate for pad wear or tooling compression, maintaining consistent clamping force without replacing the cylinder.
Is the Airtac SCJ40 Standard Cylinder SCJ40X500-100 the Right Cylinder?
Choose this 40 mm bore when your application needs around 628 N of push force at standard shop air. If you require more force, stepping up to the 50 mm bore provides 982 N push at 0.5 MPa. For applications where the stroke is fixed and never needs field adjustment, the standard SC40X500 fixed-stroke cylinder is a simpler, more cost-effective alternative. A direct replacement must match the 40 mm bore, 500 mm nominal stroke, 100 mm adjust range, PT1/4 ports, and basic mounting. For strokes of 500 mm, ensure the rod is adequately supported against side loads; if significant lateral force is present, add an external guide rail or switch to a guided cylinder to prevent rod bending and premature seal wear.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-100)
- ✓ 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 SCJ40 Standard Cylinder SCJ40X500-100 FAQ
At 0.5 MPa, the push force is 628 N and the pull force is 528 N. At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 1280 N. The pull force is always lower because the rod reduces the effective piston area on the return stroke.
Yes, if you need the adjustable stroke feature. The SCJ40X500-100 has the same bore, port size, and rod dimensions as the fixed-stroke SC40X500, but it includes the rear adjusting screw and a slightly longer body. Ensure the extra length and the 100 mm adjustment range fit your mounting space.
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