Airtac SCJ250 Standard Cylinder SCJ250X160-10S
The AirTAC Airtac SCJ250 Standard Cylinder SCJ250X160-10S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 10 mm range without swapping the cylinder. Ø250mm bore, 160mm nominal stroke, PT1" ports and adjustable end cushioning.
- BoreØ250 mm
- Nominal stroke160 mm
- Stroke adjust-10 mm
- Port sizePT1"
- Rod threadM42×2
- CushionAdjustable, 40 mm
About the Airtac SCJ250 Standard Cylinder SCJ250X160-10S
The SCJ250X160-10 is a double-acting, single-rod pneumatic cylinder engineered for heavy-duty applications where fine-tuning the stroke end position is critical. With a 250 mm bore and a nominal 160 mm stroke, its rear adjusting screw provides a 10 mm field-adjustable range, allowing operators to dial in the exact end-stop for commissioning, wear compensation, or format changes without removing the cylinder. This model delivers a substantial 24544 N of push force at 0.5 MPa, rising to 44178 N at the maximum operating pressure of 0.9 MPa.
Built as a robust tie-rod cylinder with a 50 mm diameter piston rod and a 40 mm air cushion, the SCJ250X160-10 is classified as ISO 6430 class. The integrated magnet (suffix -S) allows for direct mounting of CMSG, DMSG, or EMSG sensors on the barrel for precise, non-contact position sensing. The body length A(SCJ) for this bore is 409 mm, providing a compact yet powerful solution for demanding industrial tasks.
Airtac SCJ250 Standard Cylinder SCJ250X160-10S Technical Specifications
| Model | Airtac SCJ250 Standard Cylinder SCJ250X160-10S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø250 mm |
| Nominal stroke | 160 mm |
| Stroke adjustment | Up to 10 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 SCJ250X160-10S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 250 | Bore size in mm. |
| ×160 | Nominal (maximum) stroke length in mm. |
| -10 | 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 SCJ250X160-10S Is Used
Heavy Press End-Stop Calibration
The 10mm rear adjustment screw lets technicians precisely set the final pressing depth on a 250-bore hydraulic-pneumatic press during initial setup and periodically correct it for tooling wear, ensuring consistent part quality.
Large Part Ejector Tuning
In a foundry or heavy fabrication line, this cylinder can eject large castings. The adjustable stroke allows operators to fine-tune the ejector's travel to accommodate different mold or part heights without changing the cylinder.
Material Straightening Roll Gap
Used to actuate a straightening roll on a heavy-gauge plate line, the SCJ250's adjustable stroke provides a 10mm window to precisely set the roll gap for different material thicknesses, with the built-in magnet confirming the roll's position.
Is the Airtac SCJ250 Standard Cylinder SCJ250X160-10S the Right Cylinder?
Select the SCJ250 bore when your application requires a push force exceeding 15708 N at 0.5 MPa, which is the limit of the next smaller SCJ200 bore. If your stroke needs are fixed and do not require field adjustment, a standard SC250 fixed-stroke cylinder offers a simpler, more cost-effective alternative. For applications involving significant side loads, an external guide rail or a guided cylinder is strongly recommended to prevent rod bending, especially at this force class. A direct replacement must match the 250 mm bore, 160 mm nominal stroke, 10 mm adjustable range, PT port thread, and the built-in magnet option.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-10)
- ✓ 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 SCJ250X160-10S FAQ
At 0.7 MPa operating pressure, this cylinder generates 34361 N of push force and 32986 N of pull force. The pull force is lower because the 50mm piston rod reduces the effective area on the retract side.
Yes, this is a direct replacement for any AirTAC SCJ250X160-10 cylinder. Ensure your existing setup uses the same 250mm bore, 160mm nominal stroke, 10mm adjustable range, PT port thread, and the -S magnet option for sensor compatibility.
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