Airtac SCJ100 Standard Cylinder SCJ100X275-40
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X275-40 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, 275mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke275 mm
- Stroke adjust-40 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X275-40
The SCJ100X275-40 is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke, built on a robust tie-rod construction. The rear-cap adjusting screw provides a 40 mm range to fine-tune the stroke end position, allowing machine builders to dial in the exact 275 mm nominal stroke without changing the cylinder. With a 25 mm diameter piston rod and PT1/2 ports, this cylinder delivers a substantial 3927 N of push force at 0.5 MPa.
This 100 mm bore actuator uses an adjustable air cushion to decelerate the piston smoothly at the end of travel, with a cushion length of 29 mm. The body length (A dimension) is 245 mm, making it a compact solution for heavy-duty applications requiring precise end-stop adjustment. The operating pressure ranges from 0.15 to 1.0 MPa, with a proof pressure of 1.5 MPa, ensuring reliable performance in demanding industrial environments.
Airtac SCJ100 Standard Cylinder SCJ100X275-40 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X275-40 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 275 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 SCJ100X275-40
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×275 | 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 SCJ100X275-40 Is Used
Commissioning & Setup
Fine-tune the end stop of a heavy pressing or clamping operation during initial machine setup. The 40 mm adjustment range allows technicians to quickly dial in the exact position without swapping shims or hard stops.
Format Changeover
Adjust the stroke end for different product sizes on a packaging or material handling line. The screw mechanism enables a quick changeover between product runs, reducing downtime compared to fixed-stroke cylinders.
Wear Compensation
Compensate for tooling or gripper wear over time in a high-cycle assembly fixture. The adjustable stroke allows operators to advance the end position slightly to maintain consistent part contact without replacing the entire actuator.
Is the Airtac SCJ100 Standard Cylinder SCJ100X275-40 the Right Cylinder?
Choose the SCJ100X275-40 when your application demands a high-force actuator with the ability to fine-tune the stroke end position during commissioning or format changes. If you need more force, stepping up to the 125 mm bore provides 6136 N of push at 0.5 MPa. For applications where the stroke is fixed and never needs adjustment, the standard SC100 fixed-stroke cylinder offers a simpler, more cost-effective alternative.
For a direct replacement, match an AirTAC SCJ adjustable-stroke cylinder with a 100 mm bore, a nominal stroke of 275 mm, and a 40 mm adjust range. Ensure the port thread is PT and the mounting style is basic. At a 275 mm stroke, consider the potential for side loading on the 25 mm rod; if the load is not guided externally, adding an external guide or switching to a guided cylinder will protect the rod and bearing from premature wear.
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 SCJ100X275-40 FAQ
At the standard operating pressure of 0.5 MPa, this cylinder generates 3927 N of push force and 3681 N of pull force. The pull force is lower because the 25 mm 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.
A rear-cap adjusting screw limits the stroke end position within a 40 mm range, allowing the 275 mm nominal stroke to be shortened in the field. It is a direct dimensional replacement for an SC100 fixed-stroke cylinder of the same bore, but only when you need the ability to fine-tune the stroke. The mounting, port, and rod dimensions are identical.
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