Airtac SCJ100 Standard Cylinder SCJ100X250-30
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X250-30 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, 250mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke250 mm
- Stroke adjust-30 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X250-30
The SCJ100X250-30 is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, built on a robust tie-rod construction. Its 100 mm bore delivers a substantial push force of 3927 N at 0.5 MPa, scaling up to 7068 N at the maximum operating pressure of 0.9 MPa, making it a powerful actuator for heavy industrial tasks. The rear-cap adjusting screw provides a 30 mm range to precisely dial in the stroke end position without replacing the cylinder or adding external hard stops.
This model features a 25 mm diameter piston rod with an M20x1.5 male thread and PT1/2 port connections. The integrated air cushion is 29 mm long, effectively decelerating high-inertia loads at the stroke's end. With a body length A of 245 mm, it accommodates a nominal stroke of 250 mm, well within the 1500 mm maximum standard stroke for this bore size.
Airtac SCJ100 Standard Cylinder SCJ100X250-30 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X250-30 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 250 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 SCJ100X250-30
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×250 | 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 SCJ100X250-30 Is Used
Commissioning Fine-Tuning
During machine setup, the 30 mm adjustment screw allows engineers to precisely dial in the final stop position of a 250 mm stroke actuator, compensating for assembly tolerances without mechanical rework.
Format Changeovers
On packaging or material handling lines, the adjustable stroke enables a quick change of the cylinder's end position to accommodate different product sizes or pallet dimensions, minimizing downtime.
Wear Compensation
In high-cycle clamping or pressing applications, the stroke can be slightly extended over time to compensate for wear on tooling or contact surfaces, maintaining consistent process force and position.
Is the Airtac SCJ100 Standard Cylinder SCJ100X250-30 the Right Cylinder?
Select the SCJ100X250-30 when you need to fine-tune the end position of a 250 mm stroke during commissioning or for format changeovers. For applications demanding higher force, consider stepping up to the 125 mm bore, which provides 6136 N of push force at 0.5 MPa. If a fixed, non-adjustable stroke is sufficient, the standard SC100X250 is a more economical alternative. This cylinder is a direct replacement for another AirTAC SCJ100X250-30 with the same PT port thread, basic mounting, and no magnet. For strokes of 300 mm or more, be mindful of side-loading on the 25 mm rod; an external guide or a guided cylinder is recommended to prevent rod bending.
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 SCJ100X250-30 FAQ
This double-acting, single-rod cylinder generates a push force of 3927 N at 0.5 MPa and 7068 N at 0.9 MPa. The pull force is slightly lower at 3681 N at 0.5 MPa due to the area occupied by the 25 mm piston rod.
A rear-cap screw allows you to shorten the stroke end by up to 30 mm from the nominal 250 mm maximum. Choose the SCJ when you need to fine-tune the end position on the machine, such as for commissioning, format changes, or to take up wear. If your stroke length is fixed and will not need field adjustment, the standard SC100X250 is the correct choice.
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