Airtac SCJ100 Standard Cylinder SCJ100X75-50
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X75-50 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 50 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-50 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X75-50
The SCJ100X75-50 is a double-acting, single-rod pneumatic cylinder with a 100 mm bore and a nominal 75 mm stroke. Its defining feature is the rear-cap adjusting screw, which provides a 50 mm field-adjustable range to fine-tune the stroke end position. At 0.5 MPa, it delivers 3927 N of push force and 3681 N of pull force, making it suitable for medium-to-heavy linear actuation tasks where end-stop precision is critical.
This tie-rod cylinder uses a 25 mm diameter piston rod and PT1/2 ports, with a 29 mm air cushion at each end for smooth deceleration. The SCJ body length (A dimension) is 245 mm, slightly longer than a fixed-stroke SC of the same bore to accommodate the adjustment mechanism. The standard operating pressure is 0.15–1.0 MPa, with a proof pressure of 1.5 MPa, and the speed range is 30–800 mm/s.
Airtac SCJ100 Standard Cylinder SCJ100X75-50 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X75-50 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 75 mm |
| Stroke adjustment | Up to 50 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 SCJ100X75-50
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×75 | Nominal (maximum) stroke length in mm. |
| -50 | 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 SCJ100X75-50 Is Used
Commissioning & Setup
During machine commissioning, the 50 mm adjustment range lets technicians fine-tune the actuator end position without disconnecting rod-end tooling or machining custom stops.
Product Format Changeover
On packaging or assembly lines, operators can quickly adjust the stroke end to accommodate different product sizes or pallet dimensions, reducing downtime between batches.
Wear Compensation
In high-cycle clamping or pressing fixtures, the adjusting screw can be used to take up mechanical wear in the tooling over time, maintaining consistent clamp force and position.
Is the Airtac SCJ100 Standard Cylinder SCJ100X75-50 the Right Cylinder?
Choose the SCJ100X75-50 when you need to dial in the exact stroke end during commissioning or changeover without swapping the cylinder. If the 3927 N push force at 0.5 MPa is more than required, stepping down to the 80 mm bore SCJ80 series (2513 N push) can reduce air consumption and physical size. For applications needing a fixed, non-adjustable stroke, the standard SC100 series is a simpler, slightly shorter alternative. To replace this unit, match the 100 mm bore, 75 mm nominal stroke, 50 mm adjust range, PT port thread, and basic mounting style. For strokes of 300 mm or more, evaluate side-loading and consider an external guide or a guided cylinder to protect the rod and bearings.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-50)
- ✓ 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 SCJ100X75-50 FAQ
The theoretical push force is 3927 N at 0.5 MPa and 7068 N at the maximum operating pressure of 0.9 MPa. The pull force is slightly lower at 3681 N at 0.5 MPa due to the 25 mm rod reducing the effective piston area on the return stroke.
Yes, if you need the 50 mm stroke-end adjustability. The SCJ100X75-50 matches the SC100 mounting footprint and porting, but its body is longer (245 mm A-dimension). Ensure your machine has clearance for the rear adjustment screw and that the 75 mm nominal stroke plus 50 mm adjustment range meets your motion requirements.
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