Airtac SCJ100 Standard Cylinder SCJ100X75-30STC
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X75-30STC 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, 75mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke75 mm
- Stroke adjust-30 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X75-30STC
The SCJ100X75-30STC is a double-acting, single-rod pneumatic cylinder from the AirTAC SCJ adjustable-stroke series. With a 100 mm bore and a 25 mm piston rod, it delivers a substantial push force of 3927 N at 0.5 MPa. The defining feature is the rear-cap adjusting screw, which provides up to 30 mm of field-adjustable stroke reduction, allowing engineers to fine-tune the end position without replacing the cylinder.
This specific model is configured with a built-in magnet (S) for direct mounting of CMSG/DMSG sensors and a centre trunnion (TC) mounting, making it ideal for applications requiring a pivoting motion. The trunnion bracket (TCM1) is included for immediate installation. Operating on filtered air from 0.15 to 1.0 MPa, its 29 mm air cushion decelerates the piston smoothly at the end of travel, protecting the end cap.
Airtac SCJ100 Standard Cylinder SCJ100X75-30STC Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X75-30STC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 75 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 SCJ100X75-30STC
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×75 | 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 SCJ100X75-30STC Is Used
Commissioning & Setup
The 30 mm adjustment screw allows technicians to precisely set the stroke end point during initial machine setup, eliminating the need for shims or custom hard stops and significantly reducing commissioning time.
Product Changeovers
On a packaging line, the stroke can be quickly adjusted to accommodate different box sizes or pallet patterns. The centre trunnion mount allows the cylinder to pivot, following the changing angle of a sorting gate or diverter arm.
Clamping & Pressing
Used in a clamping fixture, the adjustable stroke compensates for variations in workpiece thickness or tooling wear over time. The 3927 N push force at 0.5 MPa provides a powerful, consistent clamping pressure for machining or assembly operations.
Is the Airtac SCJ100 Standard Cylinder SCJ100X75-30STC the Right Cylinder?
Select the SCJ100 series when your application requires a force of around 3927 N at standard factory air pressure. If you need a more compact design with less force, step down to the 80 mm bore, which provides 2513 N of push force. For higher force requirements, the 125 mm bore delivers 6136 N. The adjustable stroke is a prime choice over a fixed-stroke SC cylinder when the exact end position needs to be dialed in during commissioning or changed for different product runs.
For a direct replacement, ensure the new cylinder matches the 100 mm bore, 75 mm nominal stroke, and the 30 mm adjustable range. It must also have a PT port, centre trunnion (TC) mounting with the F-SC100TC bracket, and a magnet for sensors. For strokes of 300 mm or more, consider an external guide rod assembly to prevent side-loading and potential 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 SCJ100X75-30STC FAQ
The theoretical push force at 0.5 MPa is 3927 N, and the pull force is 3681 N. The force is adjustable by changing the operating pressure, up to a maximum of 7068 N of push force at 0.9 MPa. The stroke adjustment screw does not change the output force.
Yes, this model has the -S suffix, meaning it has a built-in magnet on the piston. You can directly mount AirTAC CMSG (reed) or DMSG/EMSG (solid-state) sensors onto the barrel's sensor slot to detect piston position without any additional brackets.
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