Airtac SCJ100 Standard Cylinder SCJ100X400-30S
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X400-30S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 30 mm range without swapping the cylinder. Ø100mm bore, 400mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke400 mm
- Stroke adjust-30 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X400-30S
The SCJ100X400-30S delivers a substantial 3927 N of push force at 0.5 MPa, making it a robust choice for heavy-duty applications requiring fine-tuned positioning. Its rear-mounted adjusting screw provides up to 30 mm of stroke-end adjustment, allowing operators to precisely dial in the stopping point during commissioning or changeovers without swapping the cylinder.
This single-rod, double-acting cylinder features a 25 mm diameter rod and a PT1/2 port. The built-in magnet (denoted by the 'S' suffix) allows for direct mounting of CMSG/DMSG/EMSG sensors along the tie-rod barrel for reliable, non-contact position feedback, while the 29 mm air cushion at each end ensures smooth deceleration of heavy loads.
Airtac SCJ100 Standard Cylinder SCJ100X400-30S Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X400-30S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 400 mm |
| Stroke adjustment | Up to 30 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 SCJ100X400-30S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×400 | Nominal (maximum) stroke length in mm. |
| -30 | 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 SCJ100X400-30S Is Used
Material Handling Stops
Adjust the end-stroke by up to 30 mm to precisely position a stop gate on a conveyor line for different box sizes, eliminating the need for manual repositioning of external hard stops.
Clamping & Pressing
Fine-tune the clamping depth for workpieces of varying thickness in a press or welding fixture, using the full 3927 N push force at 0.5 MPa to secure parts without damage.
Format Changeovers
Quickly adapt a packaging machine's pusher stroke for a new product format by adjusting the rear screw, reducing downtime during batch changes compared to swapping fixed-stroke cylinders.
Is the Airtac SCJ100 Standard Cylinder SCJ100X400-30S the Right Cylinder?
For applications requiring slightly less force, the 80 mm bore SCJ provides 2513 N of push force at the same pressure, while a step up to the 125 mm bore delivers 6136 N. This model is ideal when you need to fine-tune the end position of a 400 mm stroke; if a fixed stroke is acceptable, the standard SC100X400 is a more economical alternative. The 400 mm stroke length warrants attention to side-loading; ensure the load is guided externally or consider a guided cylinder if significant radial forces are present.
As a direct replacement, match this cylinder with another SCJ of 100 mm bore, 400 mm nominal stroke, and a 30 mm adjustment range. The replacement must have a PT port, a basic mount, and the -S magnet option to ensure sensor compatibility.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-30)
- ✓ 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 SCJ100X400-30S FAQ
At the standard 0.5 MPa operating pressure, it generates 3927 N of push force and 3681 N of pull force. The maximum push force at 0.9 MPa is 7068 N. The pull force is lower due to the area of the 25 mm piston rod.
Yes, if you need the ability to fine-tune the stroke end. The SCJ100X400-30S replaces a fixed-stroke SC100X400 when you require up to 30 mm of field-adjustable retraction. Ensure the mounting style, PT port, and magnet sensor option match your existing setup.
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