Airtac SCJ40 Standard Cylinder SCJ40X110-40H
The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X110-40H 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. Ø40mm bore, 110mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Nominal stroke110 mm
- Stroke adjust-40 mm
- Port sizePT1/4
- Rod threadM12×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ40 Standard Cylinder SCJ40X110-40H
The SCJ40X110-40H is a double-acting, single-rod pneumatic cylinder with a 40 mm bore and a nominal 110 mm stroke, featuring a rear-cap adjusting screw that provides up to 40 mm of field-adjustable stroke reduction. This allows engineers to precisely dial in the stroke end position during commissioning or changeovers without swapping the cylinder. Built with a 16 mm diameter piston rod and PT1/4 ports, it delivers 628 N of push force and 528 N of pull force at 0.5 MPa, making it suitable for medium-force positioning tasks.
This model is equipped with Viton (FKM) seals, designated by the 'H' suffix, which extends the operating temperature range to 0–150 °C, making it ideal for applications near ovens, heated presses, or other high-temperature environments where standard TPU seals would degrade. The tie-rod construction ensures durability, and the adjustable air cushion decelerates the piston smoothly at the end of the stroke. The body length for this SCJ series is 185 mm, providing a compact yet powerful actuation package.
Airtac SCJ40 Standard Cylinder SCJ40X110-40H Technical Specifications
| Model | Airtac SCJ40 Standard Cylinder SCJ40X110-40H |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 110 mm |
| Stroke adjustment | Up to 40 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/4 |
| Rod thread | M12×1.25 |
| 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, 21 mm |
| Max stroke | Up to 1200 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 SCJ40 Standard Cylinder SCJ40X110-40H
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×110 | 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 SCJ40 Standard Cylinder SCJ40X110-40H Is Used
Commissioning & Setup
The 40 mm adjustment range allows technicians to quickly fine-tune the stroke end point during initial machine setup, accommodating minor variances in tooling or workpiece position without mechanical modifications.
High-Temperature Actuation
With Viton seals rated for 0–150 °C, this cylinder is perfect for actuating dampers, gates, or clamps near industrial ovens, autoclaves, or heated forming presses where standard seals would fail.
Wear Compensation
In high-cycle assembly fixtures, the adjustable stroke can be periodically tweaked to compensate for gradual wear on gripper pads or contact surfaces, maintaining consistent clamping force and part quality over time.
Is the Airtac SCJ40 Standard Cylinder SCJ40X110-40H the Right Cylinder?
Select the SCJ40X110-40H when you need to fine-tune the end-of-stroke position by up to 40 mm on a machine, eliminating the need for external hard stops. If your application requires more force, consider stepping up to the 50 mm bore SCJ series, which provides 982 N of push force at 0.5 MPa. For a simpler, fixed-stroke solution without the adjusting screw, the standard SC40X110 cylinder is a direct alternative. This SCJ model is a direct replacement for an existing AirTAC SCJ40X110-40H cylinder with PT ports, basic mounting, and Viton seals. For strokes over 300 mm, evaluate side-loading on the 16 mm rod and consider adding an external guide or switching to a guided cylinder to prevent rod bending.
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 SCJ40 Standard Cylinder SCJ40X110-40H FAQ
At the standard operating pressure of 0.5 MPa, the push force is 628 N. This increases to 879 N at 0.7 MPa and reaches a maximum of 1130 N at the 0.9 MPa operating limit. The theoretical force at 1.0 MPa is 128 kgf.
A screw mechanism in the rear cap allows you to shorten the stroke end position by up to 40 mm from the nominal 110 mm stroke. This sets a new mechanical stop for the piston, enabling precise, tool-free adjustment of the cylinder's extension length on the machine.
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