Airtac SCJ40 Standard Cylinder SCJ40X60-40
The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X60-40 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. Ø40mm bore, 60mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Nominal stroke60 mm
- Stroke adjust-40 mm
- Port sizePT1/4
- Rod threadM12×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ40 Standard Cylinder SCJ40X60-40
The SCJ40X60-40 is a double-acting, single-rod pneumatic cylinder with a rear adjusting screw that provides up to 40 mm of field-adjustable stroke reduction. This lets you dial in the exact end position for commissioning or format changes without removing the cylinder. With a 40 mm bore and 16 mm rod, it delivers 628 N of push force at 0.5 MPa, making it a capable mid-range actuator.
This model has a nominal 60 mm stroke, PT1/4 ports, and an M12x1.25 rod thread. The tie-rod construction includes an adjustable air cushion for smooth deceleration. The SCJ body length A is 185 mm, slightly longer than a fixed-stroke SC to house the adjusting mechanism. It operates from 0.15 to 1.0 MPa and suits speeds of 30-800 mm/s.
Airtac SCJ40 Standard Cylinder SCJ40X60-40 Technical Specifications
| Model | Airtac SCJ40 Standard Cylinder SCJ40X60-40 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 60 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 SCJ40X60-40
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×60 | 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 SCJ40X60-40 Is Used
Commissioning & Setup
During machine commissioning, the 40 mm adjustment screw lets technicians quickly dial in the perfect end-stop position without fabricating custom mechanical stops or swapping out cylinders.
Wear Take-Up
In clamping or pressing fixtures, the adjustable stroke compensates for tooling wear over time. The stroke can be incrementally extended to maintain consistent contact force without replacing the actuator.
Format Changeover
On packaging or assembly lines, the SCJ40X60-40 allows operators to adjust the stroke for different product sizes. A quick turn of the rear screw adapts the cylinder to a new format, minimizing downtime.
Is the Airtac SCJ40 Standard Cylinder SCJ40X60-40 the Right Cylinder?
Choose the SCJ40 when you need to fine-tune the stroke end position on a machine. If 628 N of push force at 0.5 MPa is insufficient, stepping up to a 50 mm bore provides 982 N. For applications where the stroke is fixed and never needs adjustment, the simpler SC40 series is a direct alternative. This SCJ40X60-40 is a direct replacement for an existing AirTAC SCJ40 cylinder with a 60 mm nominal stroke, a 40 mm adjustment range, PT ports, and basic mounting. If you need position sensing, order the same model with the -S magnet option.
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 SCJ40X60-40 FAQ
A screw in the rear cap acts as an internal mechanical stop for the piston. Turning the screw shortens the stroke end by up to 40 mm from the nominal 60 mm maximum. It adjusts the retracted end position only and does not change the cylinder's force output.
At 0.5 MPa, the push force is 628 N and the pull force is 528 N (reduced due to the 16 mm rod area). At the maximum operating pressure of 0.9 MPa, push force reaches 1130 N. These values match the standard SC series of the same bore.
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