Airtac SCJ100 Standard Cylinder SCJ100X75-40S
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X75-40S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 40 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-40 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X75-40S
The SCJ100X75-40S is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, giving you a 40 mm fine-tuning range via the rear cap screw without swapping the cylinder. Its 100 mm bore generates 3927 N of push force at 0.5 MPa (7068 N at 0.9 MPa), driven by a 25 mm diameter rod through PT1/2 ports.
This model includes a built-in magnet for direct mounting of CMSG/DMSG/EMSG sensors, enabling clean end-of-stroke detection. The body length A(SCJ) is 245 mm, and the adjustable cushion decelerates the piston smoothly. It is a tie-rod design, not an ISO 15552 profile cylinder.
Airtac SCJ100 Standard Cylinder SCJ100X75-40S Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X75-40S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 75 mm |
| Stroke adjustment | Up to 40 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 SCJ100X75-40S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×75 | Nominal (maximum) stroke length in mm. |
| -40 | 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 SCJ100X75-40S Is Used
Commissioning Fine-Tuning
The 40 mm rear screw adjustment lets technicians dial in the exact stroke end position on a new assembly line without changing hard stops or cylinder bodies.
Format Changeover
Quickly adjust the actuator throw when a packaging machine switches between product sizes, reducing downtime with a simple screw turn instead of a full cylinder swap.
Wear Compensation
As tooling or gripper pads wear, the adjustable stroke can be extended slightly to maintain precise contact pressure and part engagement over the machine's life.
Is the Airtac SCJ100 Standard Cylinder SCJ100X75-40S the Right Cylinder?
Choose the SCJ100X75-40S when you need to dial in a precise stroke end position during commissioning or format changes. If 3927 N of push force at 0.5 MPa is insufficient, stepping up to the 125 mm bore provides 6136 N; if it is excessive, the 80 mm bore delivers 2513 N. For applications needing a fixed, non-adjustable stroke, the standard SC series is a simpler alternative.
As a direct replacement, match the 100 mm bore, 75 mm nominal stroke, 40 mm adjust range, PT1/2 ports, and the integrated magnet. At this 75 mm stroke, rod bending from side loads is not a primary concern, but always align the load axially for maximum seal life.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-40)
- ✓ 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 SCJ100X75-40S FAQ
At 0.5 MPa, the push force is 3927 N and the pull force is 3681 N due to the 25 mm rod area reduction. At the maximum operating pressure of 0.9 MPa, the push force reaches 7068 N.
Yes, provided the bore (100 mm), nominal stroke (75 mm), and port size (PT1/2) match. The SCJ adds a rear adjusting screw, making the body slightly longer, so verify the available space in your machine.
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