Airtac SCJ250 Standard Cylinder SCJ250X1000-10S
The AirTAC Airtac SCJ250 Standard Cylinder SCJ250X1000-10S 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, 1000mm nominal stroke, PT1" ports and adjustable end cushioning.
- BoreØ250 mm
- Nominal stroke1000 mm
- Stroke adjust-10 mm
- Port sizePT1"
- Rod threadM42×2
- CushionAdjustable, 40 mm
About the Airtac SCJ250 Standard Cylinder SCJ250X1000-10S
The SCJ250X1000-10S is a large-bore, double-acting single-rod cylinder with a field-adjustable stroke end, delivering a substantial push force of 24544 N at 0.5 MPa. Its rear-cap adjusting screw provides a 10 mm range to fine-tune the stroke end position, making it ideal for commissioning heavy-duty presses or accommodating wear in large-scale material handling systems without replacing the cylinder.
This ISO 6430 class tie-rod cylinder features a 50 mm diameter piston rod and a 40 mm air cushion for effective end-of-stroke deceleration. The built-in magnet (denoted by the -S suffix) allows direct mounting of CMSG/DMSG/EMSG sensors for reliable position feedback. With a body length A of 409 mm, it is engineered for demanding industrial environments requiring precise, adjustable linear motion.
Airtac SCJ250 Standard Cylinder SCJ250X1000-10S Technical Specifications
| Model | Airtac SCJ250 Standard Cylinder SCJ250X1000-10S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø250 mm |
| Nominal stroke | 1000 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 SCJ250X1000-10S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 250 | Bore size in mm. |
| ×1000 | 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 SCJ250X1000-10S Is Used
Heavy Press Commissioning
Fine-tune the final pressing depth on a large hydraulic-style pneumatic press during initial setup and product changeovers, using the 10 mm adjust range for precise end-stop calibration.
Material Handling Stops
Adjust the retract or extend stop position on a heavy-duty conveyor gate or diverter to handle varying pallet or product sizes, with 24544 N of push force to move large loads.
Wear Compensation in Tooling
Compensate for mechanical wear on large forming or clamping tools over time by incrementally adjusting the cylinder's stroke end, maintaining consistent clamping force without disassembly.
Is the Airtac SCJ250 Standard Cylinder SCJ250X1000-10S the Right Cylinder?
Choose the SCJ250 when your application demands the highest force class in the SCJ range, with 24544 N of push at 0.5 MPa. If a slightly lower force is acceptable, stepping down to the 200 mm bore (15708 N push) can reduce size and cost. This adjustable-stroke model is the correct choice when you need to fine-tune the stroke end on the machine; for a fixed, non-adjustable stroke, a standard SC cylinder is a more economical alternative.
For this 1000 mm stroke, managing side loads is critical to prevent rod bending. Always ensure the load is guided externally and aligned axially with the rod. A direct replacement must match the 250 mm bore, 1000 mm nominal stroke, 10 mm adjust range, PT port thread, and the -S magnet option. This model uses a basic mount; mounting accessories like the LB foot or TC centre trunnion can be added separately.
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 SCJ250X1000-10S FAQ
The theoretical push force at 1.0 MPa is 5006 kgf. At the maximum operating pressure of 0.9 MPa, the push force is 44178 N, and at a common line pressure of 0.5 MPa, it provides 24544 N. The pull force is slightly less at 23562 N (0.5 MPa) due to the 50 mm rod diameter.
The -10 suffix indicates a 10 mm adjustment range on the rear cap. Turning the screw shortens the stroke end by up to 10 mm from the nominal 1000 mm maximum. This is a direct replacement for any AirTAC SCJ cylinder with a 250 mm bore, 1000 mm nominal stroke, 10 mm adjust range, PT port thread, and a magnet. It will not directly interchange with ISO 15552 cylinders.
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