Airtac SCJ40 Standard Cylinder SCJ40X100-100
The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X100-100 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, 100mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Nominal stroke100 mm
- Stroke adjust-100 mm
- Port sizePT1/4
- Rod threadM12×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ40 Standard Cylinder SCJ40X100-100
The SCJ40X100-100 is a double-acting, single-rod pneumatic cylinder with a 40 mm bore and a 100 mm nominal stroke, featuring a full 100 mm of field-adjustable stroke reduction via the rear-cap screw. This allows precise end-position tuning without removing the cylinder, ideal for commissioning and format changes. It delivers 628 N of push force at 0.5 MPa and 1130 N at 0.9 MPa, with a 16 mm diameter piston rod.
The tie-rod construction houses an adjustable air cushion (21 mm long) for smooth deceleration. The cylinder body has an overall length of 185 mm, plus the stroke. Standard PT1/4 ports and an M12x1.25 rod thread ensure straightforward pneumatic connections. This model uses the default TPU seals for a -20 to +70°C operating range and comes in a basic mounting configuration, ready for standard foot or flange accessories.
Airtac SCJ40 Standard Cylinder SCJ40X100-100 Technical Specifications
| Model | Airtac SCJ40 Standard Cylinder SCJ40X100-100 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 100 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 SCJ40X100-100
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×100 | 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 SCJ40X100-100 Is Used
Commissioning & Setup
The 100 mm adjust range lets technicians dial in the exact retract position during initial machine setup without swapping cylinders or machining external hard stops, saving hours of mechanical work.
Product Changeover
On packaging lines handling different box sizes, the stroke can be quickly reset to match a new product length. The 40 mm bore provides ample force for medium-weight diverters and pushers.
Wear Compensation
In clamping or pressing fixtures, the adjustable screw can be advanced to take up mechanical wear on tooling or seals over time, maintaining consistent clamp force without replacing the actuator.
Is the Airtac SCJ40 Standard Cylinder SCJ40X100-100 the Right Cylinder?
Choose the SCJ40X100-100 when you need to fine-tune the retract end-stop by up to 100 mm on the machine. If your force requirement is borderline, stepping up to a 50 mm bore SCJ provides 982 N of push force at the same 0.5 MPa, while stepping down to a 32 mm bore yields 402 N. For a fixed, non-adjustable stroke application, a standard SC40X100 cylinder is a simpler and more cost-effective alternative.
This is a direct replacement for another AirTAC SCJ40X100-100 with PT ports and basic mounting. If you need magnetic piston sensing, select the -S suffix model. For a pivoting application, the TC centre trunnion kit is the correct mounting choice. At this 100 mm stroke, rod side-loading is minimal, but always align the load with the rod axis.
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 SCJ40X100-100 FAQ
At the standard 0.5 MPa operating pressure, 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 greater than the pull force due to the area of the 16 mm rod.
Yes, if you need the adjustable stroke feature. The SCJ40X100-100 has the same bore, nominal maximum stroke, and mounting interfaces as an SC40X100, but the body is slightly longer to house the adjusting screw. Ensure your machine has clearance for the rear adjustment mechanism and that the 100 mm adjustment range suits your process.
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