Airtac SCJ100 Standard Cylinder SCJ100X250-100S
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X250-100S 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. Ø100mm bore, 250mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke250 mm
- Stroke adjust-100 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X250-100S
The SCJ100X250-100S is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke, offering a substantial 3927 N of push force at 0.5 MPa. Its rear-cap adjusting screw provides a full 100 mm of stroke-end reduction, allowing machine builders to fine-tune the 250 mm nominal stroke for commissioning, format changes, or wear compensation without removing the cylinder. The 25 mm diameter piston rod and PT1/2 port ensure robust flow for consistent cycle times.
This model includes a built-in magnet (-S suffix), enabling direct mounting of CMSG/DMSG/EMSG reed or solid-state sensors along the tie-rod barrel for reliable end-of-stroke or mid-stroke position feedback. Operating on 40 µm filtered air from 0.15 to 1.0 MPa, the SCJ100X250-100S features an adjustable air cushion for smooth deceleration and is a genuine AirTAC component designed for demanding industrial automation tasks.
Airtac SCJ100 Standard Cylinder SCJ100X250-100S Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X250-100S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 250 mm |
| Stroke adjustment | Up to 100 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 SCJ100X250-100S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×250 | 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 SCJ100 Standard Cylinder SCJ100X250-100S Is Used
Multi-Product Assembly Lines
Quickly adjust the 250 mm stroke end by up to 100 mm to accommodate different product heights or insertion depths during batch changeovers, eliminating the need for mechanical hard stops.
Clamping & Pressing Fixtures
Dial in the precise clamping position with the rear screw to compensate for variations in part thickness or tooling wear, leveraging the cylinder's 3927 N push force for secure holding.
Diverter & Gate Actuation
Use the adjustable stroke to fine-tune the position of a diverter gate or stop on a conveyor line, and confirm its position with a barrel-mounted sensor thanks to the built-in magnet.
Is the Airtac SCJ100 Standard Cylinder SCJ100X250-100S the Right Cylinder?
Select the SCJ100X250-100S when you need a high-force, adjustable-stroke actuator with sensor feedback. If your application requires more force, stepping up to the 125 mm bore provides 6136 N of push force at 0.5 MPa; for a lighter, more compact solution, the 80 mm bore delivers 2513 N. The 100 mm adjustment range is ideal for applications with significant variability in end-stop position. If a fixed stroke is sufficient, the standard SC100X250 cylinder offers the same force in a slightly shorter body length.
For replacement, match this model exactly with another AirTAC SCJ100X250-100S, ensuring the same bore, 250 mm nominal stroke, 100 mm adjustment range, PT port thread, and integrated magnet. At this stroke length, be mindful of side-loading on the 25 mm rod; if the load is not guided externally, consider adding an external guide rail or switching to a guided cylinder 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 SCJ100 Standard Cylinder SCJ100X250-100S FAQ
The theoretical push force at 1.0 MPa is 7068 N. At the standard operating pressure of 0.7 MPa, the push force is 5497 N. The pull force is lower (3681 N at 0.5 MPa) due to the area of the 25 mm piston rod.
The SCJ100X250-100S is longer than the fixed-stroke SC due to the rear adjusting mechanism. It is a direct dimensional replacement only for another SCJ100X250-100S cylinder. If you need the adjustability and sensor capability, this model is a perfect functional upgrade, but always verify the extended body length A(SCJ) of 245 mm fits your machine.
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