Airtac SCJ100 Standard Cylinder SCJ100X300-20
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X300-20 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 20 mm range without swapping the cylinder. Ø100mm bore, 300mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke300 mm
- Stroke adjust-20 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X300-20
The SCJ100X300-20 is a double-acting, single-rod pneumatic cylinder with a rear-cap adjusting screw that provides up to 20mm of field-adjustable stroke reduction. This allows engineers to fine-tune the stroke end position without replacing the cylinder or adding external hard stops. With a 100mm bore, it delivers a substantial 3927 N of push force at 0.5 MPa, making it a powerful actuator for medium-to-heavy industrial tasks.
Built on a durable tie-rod construction, this model features a 25mm diameter piston rod, PT1/2 ports, and an M20x1.5 rod thread. The adjustable air cushion, with a 29mm cushion length, ensures smooth deceleration. Its body length A(SCJ) is 245mm, and the maximum theoretical force at 1.0 MPa is 801 kgf, providing a robust solution for applications where the end-stop needs periodic adjustment.
Airtac SCJ100 Standard Cylinder SCJ100X300-20 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X300-20 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 300 mm |
| Stroke adjustment | Up to 20 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 SCJ100X300-20
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×300 | Nominal (maximum) stroke length in mm. |
| -20 | 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 SCJ100X300-20 Is Used
Commissioning & Process Tuning
During machine setup, the 20mm adjustment screw allows technicians to dial in the exact stroke end for a pusher or stop without iterative disassembly, dramatically reducing commissioning time on a new production line.
Wear Compensation in Material Handling
In high-cycle diverter gates on a conveyor, the adjustable stroke compensates for wear on contact surfaces over time. The stroke can be extended slightly to maintain a perfect seal or gate position, extending service intervals.
Format Changeovers on Packaging Lines
When a packaging machine switches between product sizes, the SCJ100X300-20's rear screw can be quickly reset to a new stroke end for different box widths, avoiding the need for multiple fixed-stroke cylinders or complex mechanical stops.
Is the Airtac SCJ100 Standard Cylinder SCJ100X300-20 the Right Cylinder?
Select the SCJ100X300-20 when you need a powerful, field-adjustable stroke end for commissioning or format changes. If your force requirements are lower, stepping down to a 63mm bore reduces push force to 1559 N at 0.5 MPa, saving space and air consumption. For higher forces, the 125mm bore offers 6136 N. This adjustable-stroke model is ideal over a fixed-stroke SC when the exact stroke length is unknown at design time. For a direct replacement, match the 100mm bore, 300mm nominal stroke, 20mm adjust range, and PT port thread.
At a 300mm stroke, be mindful of side-loading on the 25mm rod. If the load is not guided externally, rod deflection can cause premature seal wear. In such cases, use an external guide rail or consider a guided cylinder to ensure the rod moves in a perfectly linear path and to protect the cylinder's bearings.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-20)
- ✓ 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 SCJ100X300-20 FAQ
The cylinder's force depends on the operating pressure. At the standard 0.5 MPa, the push force is 3927 N and the pull force is 3681 N. At the maximum operating pressure of 0.9 MPa, the push force increases to 7068 N. The theoretical maximum force at 1.0 MPa is 801 kgf. Note that pull force is lower due to the rod area.
The adjustment is made via a screw in the rear cap that limits the piston's retraction, effectively shortening the stroke end by up to 20mm. It is designed to set a new fixed end position, not for dynamic mid-stroke stopping. For multi-position control, consider an SCT multi-position cylinder or a servo-pneumatic system.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SCJ Adjustable-Stroke Cylinders
Request a Quote for Airtac SCJ100 Standard Cylinder SCJ100X300-20
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.