Airtac SCJ100 Standard Cylinder SCJ100X275-50S
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X275-50S 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, 275mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke275 mm
- Stroke adjust-50 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X275-50S
The AirTAC SCJ100X275-50S is a double-acting, single-rod pneumatic cylinder that delivers 3927 N of push force at 0.5 MPa, making it a powerful choice for heavy industrial actuation. Its defining feature is a rear-cap adjusting screw that provides a 50 mm field-adjustable stroke range, allowing you to fine-tune the end position without swapping the cylinder. This model includes a built-in magnet for direct mounting of CMSG/DMSG/EMSG sensors, and with a 275 mm nominal stroke, it operates well within the 1500 mm maximum standard stroke for the 100 mm bore.
Built on a durable tie-rod construction with a 25 mm diameter piston rod and PT1/2 ports, this cylinder is engineered for reliable performance in filtered air systems. The adjustable air cushion decelerates the piston smoothly at both ends, with a cushion length of 29 mm, protecting your equipment from hard stops. At the maximum operating pressure of 0.9 MPa, the push force reaches 7068 N, providing substantial power for pressing, clamping, and positioning tasks.
Airtac SCJ100 Standard Cylinder SCJ100X275-50S Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X275-50S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 275 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 SCJ100X275-50S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×275 | 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 SCJ100X275-50S Is Used
Commissioning & Process Tuning
The 50 mm rear adjustment screw lets technicians precisely dial in the final stop position during machine setup without removing the cylinder, dramatically reducing commissioning time for new automation cells.
Product Format Changeover
In packaging or assembly lines running multiple product sizes, operators can quickly adjust the stroke end to match a new box height or part length, eliminating the need for mechanical stop changes.
Wear Compensation in Clamping
For high-cycle clamping fixtures, the adjustable stroke can be periodically tweaked to take up slack from pad wear or workpiece tolerances, maintaining consistent clamping force without replacing the actuator.
Is the Airtac SCJ100 Standard Cylinder SCJ100X275-50S the Right Cylinder?
Select the SCJ100 bore when your application requires around 3927 N of push force at standard plant pressure. If you need more power, stepping up to the SCJ125 bore provides 6136 N of push force at the same 0.5 MPa. For lighter, faster-moving loads, the SCJ80 bore delivers 2513 N. This adjustable-stroke model is the right pick over a fixed-stroke SC when you anticipate needing to dial in the stroke end during commissioning, for format changeovers, or to compensate for tooling wear. The 50 mm adjustment range on this unit gives you a generous tuning window.
For a direct replacement, match this to another AirTAC SCJ100X275-50S cylinder with a PT port, basic mounting, and the -S magnet. Since the nominal stroke is 275 mm, rod deflection under side loads is a moderate concern; ensure the load is guided externally or consider a guided cylinder if the application introduces significant lateral force. The built-in magnet allows for easy, tool-free sensor repositioning along the barrel to capture intermediate or end-of-stroke positions.
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 SCJ100X275-50S FAQ
At 0.5 MPa, the push force is 3927 N and the pull force is 3681 N. The push force is higher because the single piston rod reduces the effective area on the return stroke. At the maximum operating pressure of 0.9 MPa, the push force increases to 7068 N.
Yes, you can replace a fixed-stroke SC100X275 with this SCJ100X275-50S if you need the 50 mm field-adjustable stroke feature. Ensure the port thread (PT), magnet option (-S), and mounting style match your existing setup. The SCJ body is slightly longer to accommodate the rear adjustment mechanism.
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