Airtac SCJ100 Standard Cylinder SCJ100X65-40
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X65-40 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 40 mm range without swapping the cylinder. Ø100mm bore, 65mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke65 mm
- Stroke adjust-40 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X65-40
The SCJ100X65-40 is a double-acting, single-rod pneumatic cylinder with a 100 mm bore, delivering a robust 3927 N of push force and 3681 N of pull force at 0.5 MPa. Its defining feature is the rear-cap adjusting screw, which provides a 40 mm field-adjustable stroke-end range, allowing operators to fine-tune the 65 mm nominal stroke for precise end-position setup without swapping the cylinder.
Built on a durable tie-rod design, this SCJ model uses a 25 mm diameter piston rod with an M20x1.5 thread and PT1/2 ports. The cylinder includes an adjustable air cushion (29 mm long) for smooth deceleration and has a body length (A dimension) of 245 mm. At the maximum operating pressure of 0.9 MPa, it can generate a push force of 7068 N, making it suitable for heavy-duty positioning and clamping tasks.
Airtac SCJ100 Standard Cylinder SCJ100X65-40 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X65-40 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 65 mm |
| Stroke adjustment | Up to 40 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 SCJ100X65-40
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×65 | Nominal (maximum) stroke length in mm. |
| -40 | 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 SCJ100X65-40 Is Used
Commissioning & Setup
The 40 mm adjustment range allows technicians to easily dial in the exact end-stop position during machine commissioning, accommodating minor build tolerances and ensuring perfect alignment with mating parts.
Product Format Changeover
Ideal for packaging or assembly lines running multiple product sizes. The stroke can be quickly readjusted to handle different box heights or component thicknesses without mechanical modifications.
Wear Compensation
In high-cycle clamping or pressing fixtures, the adjustable screw can be used to take up slack from pad wear or material compression over time, maintaining consistent clamping force and precision.
Is the Airtac SCJ100 Standard Cylinder SCJ100X65-40 the Right Cylinder?
Choose the SCJ100 when your application requires a high-force actuator with the flexibility to adjust the stroke end on the machine. If your force requirements are lower, stepping down to an 80 mm bore reduces the push force to 2513 N at 0.5 MPa. For applications needing a fixed, non-adjustable stroke, the standard SC100 series is a simpler alternative. A direct replacement must match the 100 mm bore, 65 mm nominal stroke, 40 mm adjustment range, PT port thread, and basic mounting. For strokes of 300 mm or more, evaluate side-loading on the 25 mm rod and consider an external guide rail or a guided cylinder to prevent rod bending and ensure long seal life.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-40)
- ✓ 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 SCJ100X65-40 FAQ
The push force is 3927 N at 0.5 MPa and 7068 N at the maximum operating pressure of 0.9 MPa. The pull force is slightly lower at 3681 N at 0.5 MPa due to the single-rod design, which reduces the effective piston area on the return stroke.
Yes, if you need the stroke-adjustment feature. The SCJ100X65-40 has the same mounting footprint and port size as an SC100, but its body length is slightly longer to house the adjusting screw. Ensure the 40 mm adjustment range and the 65 mm nominal stroke match your mechanical envelope and motion requirements.
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