Airtac SCJ100 Standard Cylinder SCJ100X400-30
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X400-30 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 SCJ100X400-30
The SCJ100X400-30 is a double-acting, single-rod pneumatic cylinder engineered for applications where the stroke end position must be fine-tuned on the machine. Its rear-cap adjusting screw provides a 30 mm adjustable range, allowing operators to shorten the 400 mm nominal stroke without dismounting the unit. With a 25 mm piston rod and PT1/2 ports, this 100 mm bore cylinder delivers a substantial 3927 N of push force at 0.5 MPa.
Built on a durable tie-rod construction, the SCJ100X400-30 features an adjustable air cushion to decelerate the piston smoothly at the end of travel. The body length (A dimension) is 245 mm, and the standard operating pressure spans 0.15 to 1.0 MPa. This model comes in a basic configuration with TPU seals and PT threads, ready for straightforward integration into industrial pneumatic systems.
Airtac SCJ100 Standard Cylinder SCJ100X400-30 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X400-30 |
|---|---|
| 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 SCJ100X400-30
| 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 SCJ100X400-30 Is Used
Format Changeover
On packaging or converting lines, the 30 mm adjustment lets operators quickly dial in a new stop position for different product sizes without swapping cylinders or hard stops, minimizing downtime.
End-Stop Tuning
During commissioning of a pressing or clamping station, the screw allows fine-tuning of the final 400 mm stroke end to achieve precise part contact, compensating for fixture tolerances.
Wear Compensation
In high-cycle assembly fixtures, the adjustable stroke can be used to take up mechanical play or seal wear over time, maintaining consistent tooling engagement without immediate cylinder replacement.
Is the Airtac SCJ100 Standard Cylinder SCJ100X400-30 the Right Cylinder?
Choose the SCJ100X400-30 when your application demands a powerful 100 mm bore with the flexibility of a 30 mm field-adjustable stroke. If your force requirement is lower, stepping down to the 80 mm bore reduces push force to 2513 N at 0.5 MPa, which can save on air consumption. For higher thrust, the 125 mm bore provides 6136 N. If a fixed stroke is acceptable, the standard SC100X400 eliminates the adjusting mechanism. For this 400 mm stroke, be mindful of side loads; if the rod is not guided externally, consider adding a guide unit or switching to a guided cylinder to prevent rod bending and seal wear. A direct replacement must match the SCJ series, 100 mm bore, 400 mm nominal stroke, 30 mm adjust range, PT port thread, and basic mounting.
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 SCJ100X400-30 FAQ
At 0.5 MPa, the push force is 3927 N and the pull force is 3681 N. The push force is greater because the single rod reduces the effective piston area on the return stroke. At the maximum operating pressure of 0.9 MPa, the push force reaches 7068 N.
No. The rear adjusting screw only sets the physical stroke end position. It is not a locking device. Like any standard pneumatic cylinder, the SCJ100X400-30 will not hold a load if air pressure is lost or the valve is centered. An external mechanical lock or pilot-operated check valve is required for position holding.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SCJ Adjustable-Stroke Cylinders
Request a Quote for Airtac SCJ100 Standard Cylinder SCJ100X400-30
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.