Airtac SCJ100 Standard Cylinder SCJ100X300-75S
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X300-75S 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, 300mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke300 mm
- Stroke adjust-75 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X300-75S
The SCJ100X300-75S is a double-acting, single-rod pneumatic cylinder from AirTAC, engineered for applications where the stroke end position must be fine-tuned on the machine. A rear-cap adjusting screw provides up to 75 mm of stroke-end reduction, allowing operators to dial in the exact stopping point without swapping the cylinder or adding external hard stops. This model includes a built-in magnet for direct mounting of CMSG/DMSG/EMSG sensors.
With a 100 mm bore and a 25 mm piston rod, this cylinder delivers a substantial 3927 N of push force at 0.5 MPa and up to 7068 N at the maximum operating pressure of 0.9 MPa. The PT1/2 port and 29 mm air cushion ensure smooth deceleration at the end of its 300 mm nominal stroke. Its tie-rod construction makes it a robust, serviceable workhorse for industrial automation.
Airtac SCJ100 Standard Cylinder SCJ100X300-75S Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X300-75S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 300 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 SCJ100X300-75S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×300 | 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 SCJ100X300-75S Is Used
Multi-Product Conveyor Stops
A 75 mm adjustment range lets a single SCJ100X300-75S cylinder serve as a product stop for multiple box sizes on a packaging line. Operators can quickly dial in the correct stop position for each format changeover without mechanical modifications.
Clamping with Wear Compensation
In a high-cycle woodworking clamp, the adjustable stroke end compensates for pad wear over time. The 3927 N push force at 0.5 MPa provides a powerful grip, while the rear screw allows for simple re-adjustment to maintain consistent clamping pressure.
Press-Fit Depth Calibration
During the commissioning of a bearing press, the SCJ100X300-75S allows engineers to precisely calibrate the final press depth. The 75 mm adjustment range provides ample room for trial and error to achieve the exact insertion depth, with the built-in magnet enabling end-of-stroke sensor feedback.
Is the Airtac SCJ100 Standard Cylinder SCJ100X300-75S the Right Cylinder?
Select the SCJ100X300-75S when you need a 300 mm stroke with the flexibility to shorten it by up to 75 mm for commissioning or format changes. If your force requirement is lower, stepping down to an SCJ80 bore reduces push force to 2513 N at 0.5 MPa, saving space and air consumption. For a fixed, non-adjustable stroke, the standard SC100X300 cylinder is a simpler alternative. As a direct replacement, match the 100 mm bore, 300 mm nominal stroke, 75 mm adjust range, PT port thread, and the integrated magnet (-S suffix).
For a 300 mm stroke, be mindful of side loads on the 25 mm rod. If your application involves any off-axis force, use an external guide rail or switch to a guided cylinder to prevent rod bending and premature seal wear.
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 SCJ100X300-75S FAQ
At 0.5 MPa, the push force is 3927 N and the pull force is 3681 N. The pull force is lower because the piston rod reduces the effective area on the return stroke. At the maximum operating pressure of 0.9 MPa, the push force reaches 7068 N.
A rear-cap screw mechanically limits the piston's stroke end by up to 75 mm. It shortens the stroke from the 300 mm nominal maximum. It is a direct dimensional replacement for another SCJ100X300-75S, but it is longer than a fixed-stroke SC100X300 cylinder and cannot be swapped in without checking for interference.
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