Airtac SCJ250 Standard Cylinder SCJ250X160-100
The AirTAC Airtac SCJ250 Standard Cylinder SCJ250X160-100 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 SCJ250X160-100
The AirTAC SCJ250X160-100 is a large-bore, double-acting single-rod cylinder engineered for applications where the stroke end position must be fine-tuned on the machine. Its rear-cap adjusting screw provides a 100 mm adjustment range, letting technicians dial in the exact stopping point for a 160 mm nominal stroke without swapping the cylinder or adding external hard stops. The 50 mm piston rod and PT1 inch ports deliver a formidable 24544 N of push force at just 0.5 MPa.
This ISO 6430 class tie-rod cylinder features an adjustable air cushion (40 mm length) to decelerate high-inertia loads smoothly. The body length A is 409 mm, and the maximum standard stroke for this bore is 1500 mm. Operating pressure spans 0.15–1.0 MPa, with a proof pressure of 1.5 MPa, making it a robust choice for heavy industrial tasks where adjustable end-position control is critical.
Airtac SCJ250 Standard Cylinder SCJ250X160-100 Technical Specifications
| Model | Airtac SCJ250 Standard Cylinder SCJ250X160-100 |
|---|---|
| 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 SCJ250X160-100
| 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 SCJ250X160-100 Is Used
Heavy Press End-Stop Adjustment
The 100 mm rear screw adjustment allows operators to precisely set the pressing depth for large forming or laminating presses without mechanical disassembly, accommodating different material thicknesses or tooling wear.
Large Gate or Diverter Positioning
Fine-tune the open/closed position of a heavy material handling gate or diverter chute. The adjustable stroke compensates for installation tolerances and ensures a perfect seal or alignment every cycle.
Commissioning Large Automation Cells
During the commissioning of large-scale automation, the adjustable stroke allows integrators to empirically find the optimal actuator end-point for clamping or lifting heavy fixtures, then lock it in place for production.
Is the Airtac SCJ250 Standard Cylinder SCJ250X160-100 the Right Cylinder?
Select the SCJ250X160-100 when you need a 24544 N push force at 0.5 MPa but require the ability to shorten the stroke end by up to 100 mm for commissioning or format changes. If a fixed stroke is acceptable, the standard SC series offers a simpler, more economical solution. For applications needing slightly less force, stepping down to a 200 mm bore provides 15708 N of push force at the same pressure. This cylinder is a direct replacement for another AirTAC SCJ250 with a 160 mm stroke, 100 mm adjustment range, and PT ports.
For this 160 mm stroke length, side-loading is generally not a primary concern on a well-aligned large-bore cylinder, but for any off-axis force, an external guide rail or a guided cylinder should be used to protect the rod bearing and seal from premature wear. The mounting is basic; add an FA flange or LB foot bracket for fixed mounting, or a TC centre trunnion for pivoting applications.
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 SCJ250X160-100 FAQ
At the standard 0.5 MPa operating pressure, the push force is 24544 N and the pull force is 23562 N. The maximum push force at the 0.9 MPa operating limit is 44178 N. The pull force is lower due to the area of the 50 mm piston rod.
The rear adjusting screw lets you shorten the stroke end by up to 100 mm from the 160 mm nominal maximum. It is a mechanical stop, not a force or speed control. It can directly replace another SCJ250X160-100 unit with the same port and mounting type, but it is not dimensionally interchangeable with a fixed-stroke SC cylinder.
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