Airtac SCJ40 Standard Cylinder SCJ40X30-10
The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X30-10 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 10 mm range without swapping the cylinder. Ø40mm bore, 30mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Nominal stroke30 mm
- Stroke adjust-10 mm
- Port sizePT1/4
- Rod threadM12×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ40 Standard Cylinder SCJ40X30-10
The SCJ40X30-10 is a double-acting, single-rod pneumatic cylinder that puts 628 N of push force at 0.5 MPa into a compact 30 mm nominal stroke. Its rear-cap adjusting screw gives you up to 10 mm of stroke-end reduction, so you can dial in the exact stop position on the machine during commissioning or after a format change.
Built on a proven tie-rod platform with a 16 mm diameter piston rod and PT1/4 ports, this 40 mm bore actuator includes an adjustable air cushion to decelerate the load smoothly. The body length A(SCJ) is 185 mm, making it a direct dimensional match when you are replacing an existing AirTAC SCJ40 adjustable-stroke cylinder.
Airtac SCJ40 Standard Cylinder SCJ40X30-10 Technical Specifications
| Model | Airtac SCJ40 Standard Cylinder SCJ40X30-10 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 30 mm |
| Stroke adjustment | Up to 10 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 SCJ40X30-10
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×30 | Nominal (maximum) stroke length in mm. |
| -10 | 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 SCJ40X30-10 Is Used
Commissioning & Setup
Technicians can micro-adjust the stroke end by up to 10 mm to perfectly align a stop position during initial machine bring-up, eliminating the need to shim or reposition the entire cylinder.
Small-Part Reject Stations
Fine-tune the pusher's extended position on a conveyor to reliably divert parts of varying heights into a reject bin, with 628 N of force at standard line pressure.
Wear Compensation
As gripper pads or tooling tips wear down over thousands of cycles, the 10 mm adjustment screw lets operators quickly restore the precise contact point without disassembling the tooling.
Is the Airtac SCJ40 Standard Cylinder SCJ40X30-10 the Right Cylinder?
Choose the SCJ40X30-10 when you need to fine-tune a short stroke end-stop without adding external hard stops. If your application demands more force, stepping up to the 50 mm bore delivers 982 N of push at the same 0.5 MPa. For applications where the stroke is fixed and never needs field adjustment, the standard SC40 fixed-stroke cylinder is a simpler, more cost-effective alternative. To replace this unit, match the 40 mm bore, 30 mm nominal stroke, 10 mm adjust range, PT port thread, and basic mounting style.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-10)
- ✓ 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 SCJ40X30-10 FAQ
At 0.5 MPa, this 40 mm bore cylinder generates 628 N of push force and 528 N of pull force. The push force is higher because the single piston rod reduces the effective area on the return stroke. At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 128 kgf.
Only if you need the adjustable stroke feature. The SCJ40X30-10 has a slightly longer body (185 mm) than a fixed-stroke SC40 to house the adjusting screw. It is a direct replacement for another AirTAC SCJ40 with a 30 mm nominal stroke and 10 mm adjust range, matching the same port and mounting configuration.
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