Airtac SCJ100 Standard Cylinder SCJ100X75-30S
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X75-30S 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 SCJ100X75-30S
The SCJ100X75-30S is a double-acting, single-rod pneumatic cylinder engineered for applications demanding on-the-fly stroke-end tuning. Its 100 mm bore delivers a substantial 3927 N push force at 0.5 MPa, while the rear-cap adjusting screw provides a 30 mm field-adjustable range, letting technicians dial in the exact stroke end without removing the cylinder from the machine.
A built-in magnet is integrated into the piston, allowing direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors on the tie-rod barrel for precise position feedback. The 25 mm diameter piston rod and 29 mm air cushion length ensure robust, decelerated end-of-stroke performance, with a body length of 245 mm (A dimension).
Airtac SCJ100 Standard Cylinder SCJ100X75-30S Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X75-30S |
|---|---|
| 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 SCJ100X75-30S
| 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 SCJ100X75-30S Is Used
Commissioning & Fine-Tuning
During machine setup, the 30 mm adjustment screw allows engineers to precisely dial in the actuator's end position for perfect alignment with tooling, eliminating the need for shims or custom spacers.
Product Format Changeover
On packaging lines, operators can quickly adjust the stroke end to accommodate different box heights or product sizes, reducing downtime between batches without swapping the cylinder.
Wear Compensation
In high-cycle clamping or pressing fixtures, the adjustable stroke can be periodically tweaked to compensate for pad or tooling wear, maintaining consistent clamping force and part quality over time.
Is the Airtac SCJ100 Standard Cylinder SCJ100X75-30S the Right Cylinder?
Choose the SCJ100 for high-force tasks up to 7068 N at 0.9 MPa where the stroke end must be fine-tuned during commissioning or format changes. If your force requirement is lower, stepping down to the 80 mm bore (2513 N push at 0.5 MPa) reduces air consumption and physical size. For applications needing a fixed, non-adjustable stroke, the standard SC100 cylinder is a more economical choice.
This model is a direct replacement for any AirTAC SCJ100X75-30S with PT ports, basic mounting, and a magnet. For strokes of 300 mm or longer, evaluate side-load conditions; an external guide rail or a guided cylinder assembly is recommended to protect the rod and bearing from bending moments.
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 SCJ100X75-30S FAQ
At 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 reaches 7068 N. The pull force is lower due to the area of the 25 mm piston rod.
A fixed-stroke SC100 will fit the same mounting and port connections, but you will lose the ability to adjust the stroke end in the field. To retain the tuning feature, the replacement must be another SCJ100 with the same 30 mm adjustment range and magnet option.
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