Airtac SCJ100 Standard Cylinder SCJ100X75-75S
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X75-75S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 75 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-75 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X75-75S
The SCJ100X75-75S is a double-acting, single-rod pneumatic cylinder with a full 75 mm of field-adjustable stroke, giving you the ability to fine-tune the end position on the fly without swapping the unit. Its 100 mm bore delivers a substantial 3927 N of push force at 0.5 MPa, making it a strong candidate for medium-to-heavy holding, clamping, and positioning tasks where the final stroke length needs to be dialed in precisely during commissioning or changeover.
The rear adjusting screw shortens the stroke end within its 75 mm range, while the nominal 75 mm stroke defines the maximum extension. This model includes a built-in magnet (-S), allowing direct mounting of CMSG/DMSG/EMSG sensors on the tie-rod barrel for reliable end-of-stroke or mid-stroke position feedback. The 25 mm piston rod and PT1/2 port ensure robust air flow, and the 29 mm air cushion at each end provides smooth deceleration.
Airtac SCJ100 Standard Cylinder SCJ100X75-75S Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X75-75S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 75 mm |
| Stroke adjustment | Up to 75 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 SCJ100X75-75S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×75 | Nominal (maximum) stroke length in mm. |
| -75 | 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 SCJ100X75-75S Is Used
Commissioning & Setup Optimization
During machine commissioning, the 75 mm adjustment range lets technicians incrementally dial in the perfect stroke end for grippers, clamps, or pushers, eliminating the need to stock multiple fixed-stroke cylinders for trial-and-error fitting.
Format Changeover on Packaging Lines
Quickly adapt the stroke of a stop gate or diverter for different box or pallet sizes. The rear screw adjustment allows operators to change the stopping position in minutes without dismounting the cylinder, minimizing downtime between production runs.
Wear Compensation in Clamping
In high-cycle clamping fixtures, the adjustable stroke end can be periodically advanced to compensate for jaw or pad wear, maintaining consistent clamping force and part registration without replacing the actuator or adding shims.
Is the Airtac SCJ100 Standard Cylinder SCJ100X75-75S the Right Cylinder?
Choose the SCJ100X75-75S when you need the power of a 100 mm bore but must have the ability to trim the stroke end point by up to 75 mm for setup optimization or part variation. If your force requirement is lower, stepping down to an 80 mm bore (2513 N push at 0.5 MPa) can reduce air consumption and physical size. For applications needing a fixed, non-adjustable stroke, the standard SC100X75 is a simpler, more economical choice.
This cylinder is a direct replacement for another AirTAC SCJ100X75-75S with PT ports and a basic mount. The built-in magnet is essential for sensor-based control. For strokes of 300 mm or longer, consider the rod's slenderness ratio; an external guide or a guided cylinder should be used to protect the 25 mm rod from side-loading and bending under high thrust.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-75)
- ✓ 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 SCJ100X75-75S FAQ
As a single-rod cylinder, push and pull forces differ. At the standard 0.5 MPa operating pressure, it provides 3927 N of push force and 3681 N of pull force. The maximum push force at the 0.9 MPa operating limit is 7068 N. The stroke adjustment screw does not alter the cylinder's force output.
It can be a functional replacement if you need the adjustable stroke feature, but it is physically longer due to the rear adjusting mechanism. For a direct, like-for-like swap, you must match the bore (100 mm), nominal stroke (75 mm), mounting (basic), and port thread (PT). The SCJ100X75-75S replaces another SCJ of the exact same code.
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