Airtac SCJ100 Standard Cylinder SCJ100X50-40
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X50-40 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, 50mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke50 mm
- Stroke adjust-40 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X50-40
The SCJ100X50-40 delivers a substantial 3927 N of push force at 0.5 MPa, making it a powerful choice for pressing, clamping, and heavy-duty positioning tasks. Its 40 mm rear adjusting screw allows operators to fine-tune the stroke end position on the fly, which is invaluable for setting precise end stops during commissioning or accommodating tooling wear without replacing the cylinder.
This double-acting, single-rod actuator features a 25 mm piston rod and a 29 mm air cushion for smooth deceleration. The tie-rod construction provides robust service, and the body length (A dimension) is 245 mm. At the maximum operating pressure of 0.9 MPa, it generates a push force of 7068 N.
Airtac SCJ100 Standard Cylinder SCJ100X50-40 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X50-40 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 50 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 SCJ100X50-40
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×50 | 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 SCJ100X50-40 Is Used
Format Changeovers
Quickly adjust the end stop for different product sizes on packaging or assembly machines, reducing downtime between batches.
Clamping & Pressing
Fine-tune the clamping depth or pressing stroke in fixtures and jigs to protect delicate parts or compensate for material thickness variations.
Wear Compensation
In high-cycle stopper or diverter stations, the adjusting screw can take up mechanical wear on contact points, extending the service life of the tooling.
Is the Airtac SCJ100 Standard Cylinder SCJ100X50-40 the Right Cylinder?
For applications needing slightly less force, the 80 mm bore SCJ offers 2513 N of push at 0.5 MPa, while the 125 mm bore steps up to 6136 N. If your application does not require field-adjustable stroke, a fixed-stroke SC100 series cylinder is a more economical alternative. For guided loads where side forces are present, consider pairing this cylinder with an external guide or selecting a guided cylinder series.
A direct replacement must match the 100 mm bore, 50 mm nominal stroke, 40 mm adjustment range, PT1/2 ports, and basic mounting. This model is a standard configuration with a TPU seal and no magnet.
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 SCJ100X50-40 FAQ
At 0.5 MPa, the push force is 3927 N and the pull force is 3681 N due to the 25 mm rod. The maximum push force at 0.9 MPa is 7068 N.
The rear cap has an integrated screw that limits the piston's retraction stroke. You can shorten the effective stroke by up to 40 mm from the 50 mm nominal maximum, allowing for precise end-position tuning without external hard stops.
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