Airtac SCJ40 Standard Cylinder SCJ40X60-30S
The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X60-30S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 30 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-30 mm
- Port sizePT1/4
- Rod threadM12×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ40 Standard Cylinder SCJ40X60-30S
The SCJ40X60-30S is a 40 mm bore double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end. Its rear-cap adjusting screw provides up to 30 mm of stroke shortening, letting you fine-tune the end position without swapping the cylinder or adding external hard stops. The built-in magnet allows CMSG/DMSG/EMSG sensors to clamp directly onto the tie-rod barrel for reliable end-of-stroke detection.
At 0.5 MPa air pressure, this cylinder delivers 628 N of push force and 528 N of pull force, with a maximum push of 1130 N at 0.9 MPa. The 16 mm diameter piston rod and 21 mm air cushion provide smooth deceleration. Its PT1/4 port and M12x1.25 rod thread make it a direct fit for common pneumatic circuits. The body length A(SCJ) is 185 mm, slightly longer than a fixed-stroke SC of the same bore to accommodate the adjusting mechanism.
Airtac SCJ40 Standard Cylinder SCJ40X60-30S Technical Specifications
| Model | Airtac SCJ40 Standard Cylinder SCJ40X60-30S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 60 mm |
| Stroke adjustment | Up to 30 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 SCJ40X60-30S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×60 | Nominal (maximum) stroke length in mm. |
| -30 | 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 SCJ40X60-30S Is Used
Commissioning & Setup
Fine-tune the end stop during machine commissioning without dismounting the cylinder. The 30 mm screw adjustment lets technicians quickly dial in the exact stroke needed for a new product format.
Wear Take-Up on Stops
In clamping or pressing stations, the adjustable stroke compensates for wear on tooling or contact surfaces over time, maintaining consistent clamping force without mechanical shimming.
Sensor-Controlled Sorting
The built-in magnet pairs with CMSG sensors to confirm the cylinder has reached its adjusted end position, ideal for sorting gates or diverter arms where the throw distance is changed between batches.
Is the Airtac SCJ40 Standard Cylinder SCJ40X60-30S the Right Cylinder?
Choose the SCJ40X60-30S when you need to dial in a precise stroke end during commissioning or format changes. If your force requirement grows, stepping up to a 50 mm bore SCJ provides 982 N of push force at the same 0.5 MPa. For applications where the stroke never needs field adjustment, the simpler fixed-stroke SC40 series is a cost-effective alternative. This model is a direct replacement for another AirTAC SCJ40 cylinder with a 60 mm nominal stroke, 30 mm adjust range, PT ports, basic mounting, and a magnet.
For strokes of 300 mm or longer, consider an external guide rail or a guided cylinder to protect the 16 mm rod from side-load bending, especially when the load is not perfectly aligned with the rod axis.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-30)
- ✓ 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 SCJ40X60-30S FAQ
At 0.5 MPa, the push force is 628 N and the pull force is 528 N. The maximum push force at the 0.9 MPa operating limit is 1130 N. Because this is a single-rod cylinder, the push force is always greater than the pull force due to the rod area on the piston.
The SCJ40 has a longer body length (A=185 mm) to house the adjusting screw, so check your space envelope. It matches the same bore, rod size, port, and mounting accessories as an SC40. You can set the screw to the full 60 mm stroke to mimic the fixed-stroke version, but the SCJ is designed for applications where you need to shorten the stroke end by up to 30 mm.
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