Airtac SCJ100 Standard Cylinder SCJ100X300-100STC
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X300-100STC 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, 300mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke300 mm
- Stroke adjust-100 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X300-100STC
The SCJ100X300-100 is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, providing a 100 mm adjustment range via a rear-cap screw. With a 100 mm bore, it delivers a substantial 3927 N of push force at 0.5 MPa, scaling up to 7068 N at the maximum operating pressure of 0.9 MPa, making it suitable for heavy-duty clamping and pressing tasks where the final stop position needs fine-tuning.
This model features a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors and a centre trunnion (TC) mount, supplied with the TCM1 bracket, for pivoting applications. The 25 mm piston rod and PT1/2 port ensure robust air flow, while the 29 mm air cushion at each end decelerates the 300 mm stroke smoothly. The body length A(SCJ) is 245 mm.
Airtac SCJ100 Standard Cylinder SCJ100X300-100STC Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X300-100STC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 300 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 SCJ100X300-100STC
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×300 | 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 SCJ100X300-100STC Is Used
Format Changeovers
Quickly adjust the end stop for different product sizes on a packaging machine, using the 100 mm adjustment range to switch between box heights without mechanical modifications.
Clamp Depth Setting
Fine-tune the clamping depth on a woodworking or assembly jig. The rear screw allows operators to dial in the exact 300 mm stroke end for consistent pressure on varying material thicknesses.
Wear Compensation
In high-cycle pressing operations, the adjustable stroke can be incremented to compensate for tooling or pad wear over time, maintaining consistent contact force without reprogramming the machine controls.
Is the Airtac SCJ100 Standard Cylinder SCJ100X300-100STC the Right Cylinder?
Select the SCJ100X300-100 when you need to commission a 300 mm stroke with up to 100 mm of end-position adjustment without swapping the cylinder. If your force requirement is lower, stepping down to an 80 mm bore reduces push force to 2513 N at 0.5 MPa; for higher force, the 125 mm bore provides 6136 N. For this 300 mm stroke, be mindful of side loads on the 25 mm rod—consider an external guide rail or switch to a guided cylinder if the load is not perfectly axial. A fixed-stroke SC cylinder is a better choice if the stroke length is permanent.
As a direct replacement, match an AirTAC SCJ cylinder with a 100 mm bore, 300 mm nominal stroke, a 100 mm adjustment range (-100), PT port thread, TC centre trunnion mount (F-SC100TC), and a built-in magnet (-S).
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 SCJ100X300-100STC FAQ
The theoretical push force at 0.5 MPa is 3927 N, and the pull force is 3681 N due to the rod area. At the maximum operating pressure of 1.0 MPa, the push force reaches 7854 N. The force is not affected by the stroke adjustment screw.
The -100 suffix means a rear adjusting screw can shorten the stroke end by up to 100 mm from the 300 mm nominal maximum. It is a direct replacement for another SCJ100X300-100 with the same bore, stroke, adjust range, PT port, TC mount, and magnet. It is not a drop-in replacement for a fixed-stroke SC cylinder without verifying the longer body length.
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