Airtac SCJ40 Standard Cylinder SCJ40X200-100
The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X200-100 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, 200mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Nominal stroke200 mm
- Stroke adjust-100 mm
- Port sizePT1/4
- Rod threadM12×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ40 Standard Cylinder SCJ40X200-100
The SCJ40X200-100 is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, providing a nominal 200mm maximum stroke that can be shortened by up to 100mm via the rear-cap adjusting screw. This 40mm bore unit delivers 628 N of push force and 528 N of pull force at 0.5 MPa, using a 16mm diameter piston rod with M12x1.25 male threads. Its tie-rod construction houses an adjustable air cushion (21mm long) to decelerate the piston smoothly, and the body length A(SCJ) is 185mm.
This adjustable-stroke design allows machine builders and maintenance teams to fine-tune the cylinder's end position on the fly, without swapping the unit or adding external hard stops. The 100mm adjustment range is particularly useful for commissioning trials, format changeovers on packaging lines, or taking up mechanical wear over time. Operating on 40µm filtered air from 0.15 to 1.0 MPa, the standard TPU seals suit temperatures from -20 to +70°C, with PT1/4 port connections.
Airtac SCJ40 Standard Cylinder SCJ40X200-100 Technical Specifications
| Model | Airtac SCJ40 Standard Cylinder SCJ40X200-100 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 200 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 SCJ40X200-100
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×200 | 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 SCJ40X200-100 Is Used
Commissioning & Setup
Fine-tune the end position of a pusher or stop during machine commissioning. The 100mm rear screw adjustment lets technicians quickly dial in the exact stroke without removing the cylinder from the assembly.
Format Changeovers
Adapt a packaging machine's stroke for different box or product sizes. Operators can adjust the stroke end to match a new format in minutes, minimizing downtime between production runs.
Wear Compensation
Compensate for mechanical wear in a clamping or pressing fixture. As tooling or contact surfaces wear down, the adjustable stroke can be extended slightly to maintain consistent clamping force and position.
Is the Airtac SCJ40 Standard Cylinder SCJ40X200-100 the Right Cylinder?
Choose the SCJ40X200-100 when you need to dial in a precise end-stop position within a 100mm window on a 200mm nominal stroke. If your force requirement increases, stepping up to the SCJ50 bore provides 982 N of push force at 0.5 MPa. For applications where the stroke is fixed and never needs field adjustment, the standard SC40X200 fixed-stroke cylinder is a simpler, more cost-effective alternative. This model is a direct replacement for an existing AirTAC SCJ40X200-100 with PT ports and basic mounting; ensure the adjust range, bore, and stroke match exactly.
For this 200mm stroke length, ensure the load is guided and aligned axially to prevent side-loading and rod bending. If external guidance is not feasible, consider a guided cylinder or adding an external linear rail to protect the rod bearings and seals.
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 SCJ40X200-100 FAQ
A threaded screw in the rear cap acts as an internal stop for the piston. Turning the screw changes the retracted end position of the stroke, allowing you to shorten the 200mm nominal stroke by up to 100mm. It adjusts the stroke end only; it does not change the cylinder's force or speed.
At the standard operating pressure of 0.5 MPa, the SCJ40X200-100 generates 628 N of push force and 528 N of pull force. The push force is higher because it acts on the full 40mm bore area, while the pull force is reduced by the area of the 16mm piston rod.
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