Airtac SCJ40 Standard Cylinder SCJ40X800-100S
The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X800-100S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 100 mm range without swapping the cylinder. Ø40mm bore, 800mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Nominal stroke800 mm
- Stroke adjust-100 mm
- Port sizePT1/4
- Rod threadM12×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ40 Standard Cylinder SCJ40X800-100S
The SCJ40X800-100S is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke, giving you up to 100 mm of precise end-position tuning without swapping the unit. Its 40 mm bore delivers 628 N of push force at 0.5 MPa, driven by a 16 mm diameter piston rod through PT1/4 ports, making it a capable mid-range actuator for long-travel tasks.
This model includes a built-in magnet (suffix -S), allowing CMSG/DMSG/EMSG sensors to clamp directly onto the tie-rod barrel for reliable, non-contact position feedback. With an 800 mm nominal stroke and a body length A of 185 mm, the rear adjusting screw lets you dial in the exact stroke end needed during commissioning or changeovers, all within AirTAC's standard stroke range for this bore.
Airtac SCJ40 Standard Cylinder SCJ40X800-100S Technical Specifications
| Model | Airtac SCJ40 Standard Cylinder SCJ40X800-100S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 800 mm |
| Stroke adjustment | Up to 100 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 SCJ40X800-100S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×800 | Nominal (maximum) stroke length in mm. |
| -100 | 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 SCJ40X800-100S Is Used
End-Stop Tuning on Packaging Lines
Fine-tune the stroke end by up to 100 mm to perfectly align a pusher or stop gate with different box sizes, eliminating mechanical shimming during format changeovers.
Commissioning Long-Travel Stops
Dial in the exact 800 mm stopping position for a material transfer arm during initial setup, accounting for machine frame tolerances without needing custom-length cylinders.
Wear Compensation in Diverters
Use the 100 mm adjustment range to periodically reset the retracted position of a diverter gate, compensating for wear on contact surfaces and maintaining precise product routing.
Is the Airtac SCJ40 Standard Cylinder SCJ40X800-100S the Right Cylinder?
Choose the SCJ40X800-100S when your application demands a long, 800 mm stroke with the ability to fine-tune the end position by up to 100 mm. If you need more force, stepping up to a 50 mm bore provides 982 N of push force at the same 0.5 MPa pressure. For applications requiring a fixed, non-adjustable stroke, the standard SC series is a more economical choice. This cylinder is a direct replacement for another AirTAC SCJ adjustable-stroke cylinder of identical 40 mm bore, 800 mm nominal stroke, 100 mm adjust range, PT port thread, and built-in magnet. For strokes of this length, ensure the rod is adequately supported against side loads; consider an external guide rail or a guided cylinder if bending moments are a concern.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-100)
- ✓ 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 SCJ40X800-100S FAQ
At 0.5 MPa, it delivers 628 N of push force and 528 N of pull force. The push force is higher because the single rod reduces the piston area on the pull side. Maximum push force at 0.9 MPa is 1130 N.
Yes, the -S suffix means this SCJ40X800-100S has a built-in magnet. You can mount any compatible AirTAC CMSG, DMSG, or EMSG series reed or solid-state sensor directly onto the cylinder's barrel for end-of-stroke detection.
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