Airtac SCJ250 Standard Cylinder SCJ250X160-100S
The AirTAC Airtac SCJ250 Standard Cylinder SCJ250X160-100S 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. Ø250mm bore, 160mm nominal stroke, PT1" ports and adjustable end cushioning.
- BoreØ250 mm
- Nominal stroke160 mm
- Stroke adjust-100 mm
- Port sizePT1"
- Rod threadM42×2
- CushionAdjustable, 40 mm
About the Airtac SCJ250 Standard Cylinder SCJ250X160-100S
The SCJ250X160-100S is a large-bore, ISO 6430 class tie-rod cylinder that puts 24544 N of push force at your command at 0.5 MPa, yet still lets you fine-tune the stroke end by up to 100 mm with the rear adjusting screw. Its 50 mm diameter piston rod and 40 mm air cushion deliver robust, controlled motion for heavy industrial tooling.
A built-in magnet allows CMSG, DMSG, or EMSG sensors to clamp directly onto the barrel for reliable end-of-stroke detection. This model operates on 40 µm filtered air from 0.15 to 1.0 MPa, with a standard PT port thread and a TPU seal rated for -20 to +70 °C.
Airtac SCJ250 Standard Cylinder SCJ250X160-100S Technical Specifications
| Model | Airtac SCJ250 Standard Cylinder SCJ250X160-100S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø250 mm |
| Nominal stroke | 160 mm |
| Stroke adjustment | Up to 100 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1" |
| Rod thread | M42×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 40 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 (Ø250mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 24544 N | 23562 N |
| 0.7 MPa | 34361 N | — |
| Max (@1.0 MPa) | 5006 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 SCJ250 Standard Cylinder SCJ250X160-100S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 250 | Bore size in mm. |
| ×160 | 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 SCJ250 Standard Cylinder SCJ250X160-100S Is Used
Heavy Press End-Stop Tuning
The 100 mm adjustment range allows operators to dial in the exact stroke end for large forming or stamping presses during commissioning, without machining new stops.
Large Valve Actuation
Precisely set the stroke of a high-torque valve actuator in water treatment or petrochemical plants, compensating for seat wear over time to maintain a perfect seal.
Format Changeover on Heavy Lines
Quickly adapt the end position for different product sizes on a heavy conveyor or palletizing line, reducing downtime during batch changes with a simple screw adjustment.
Is the Airtac SCJ250 Standard Cylinder SCJ250X160-100S the Right Cylinder?
Step up to this 250 mm bore when a 200 mm cylinder’s 15708 N push at 0.5 MPa is insufficient for the load. If your application requires a fixed, non-adjustable stroke, the standard SC250X160 is a simpler alternative. For replacement, match the SCJ250 bore, 160 mm nominal stroke, 100 mm adjust range, PT thread, and the built-in magnet option.
At this 160 mm stroke, the rod is well-supported within the cylinder, but if the load applies a significant side force, an external linear guide or a guided cylinder should be used 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 SCJ250 Standard Cylinder SCJ250X160-100S FAQ
At 0.5 MPa, it provides 24544 N pushing and 23562 N pulling. The maximum theoretical force at 1.0 MPa is 5006 kgf. The rear adjusting screw only changes the stroke end position and does not alter the cylinder's force output.
Yes, if you need the field-adjustable stroke feature. The SCJ250X160-100S has the same bore, rod diameter, and port size as an SC250, but the body is slightly longer to house the adjusting screw. Ensure the 100 mm adjustment range and the added length fit your machine.
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