Airtac SCJ100 Standard Cylinder SCJ100X450-20TC
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X450-20TC is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 20 mm range without swapping the cylinder. Ø100mm bore, 450mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke450 mm
- Stroke adjust-20 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X450-20TC
The SCJ100X450-20TC is a double-acting, single-rod pneumatic cylinder that puts 3927 N of push force at 0.5 MPa into a 450 mm nominal stroke, with a rear-cap adjusting screw providing up to 20 mm of field-adjustable stroke-end reduction. Its 25 mm diameter rod, PT1/2 port, and 29 mm air cushion make it a robust workhorse for applications where the end position must be dialled in precisely without swapping the cylinder.
This model is configured with a TC centre trunnion mount (supplied with the TCM1 bracket, order code F-SC100TC), allowing the cylinder to pivot as the load moves through an arc. The body length A(SCJ) is 245 mm, and the adjustable cushion decelerates the piston smoothly at both ends. Operating pressure spans 0.15–1.0 MPa, with a proof pressure of 1.5 MPa.
Airtac SCJ100 Standard Cylinder SCJ100X450-20TC Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X450-20TC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 450 mm |
| Stroke adjustment | Up to 20 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/2 |
| Rod thread | M20×1.5 |
| 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, 29 mm |
| Max stroke | Up to 1500 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 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 SCJ100 Standard Cylinder SCJ100X450-20TC
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×450 | Nominal (maximum) stroke length in mm. |
| -20 | 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 SCJ100 Standard Cylinder SCJ100X450-20TC Is Used
End-Stop Tuning on Packaging Lines
The 20 mm adjustment screw lets technicians compensate for product thickness variations or seal-bar wear without stopping the line to change the cylinder, keeping cartoners and case packers running at target OEE.
Pivoting Diverter Gates
With the TC centre trunnion mount, this 100 mm bore cylinder swings a diverter gate through its arc. The adjustable stroke sets the exact gate angle for reliable sortation of parcels or food trays.
Clamp Stroke Calibration
In a woodworking or welding fixture, the rear screw adjusts the clamp's final closed position by up to 20 mm to accommodate different workpiece thicknesses, ensuring consistent clamping pressure without mechanical shims.
Is the Airtac SCJ100 Standard Cylinder SCJ100X450-20TC the Right Cylinder?
Choose the SCJ100X450-20TC when you need 3927 N of push force and the ability to fine-tune the stroke end by up to 20 mm during commissioning or format changes. If your force requirement is lower, stepping down to the 80 mm bore (2513 N push at 0.5 MPa) can reduce air consumption and physical size; for higher force, the 125 mm bore delivers 6136 N push. The TC trunnion mount is ideal for swinging loads, but if the load path is purely linear, a basic or LB foot-mounted SCJ100 would be a simpler fit.
At a 450 mm stroke, rod deflection under side load becomes a real consideration—if the load is not guided externally, add a guide rail or consider a guided cylinder to protect the rod bearings and seal. For a direct replacement, match an AirTAC SCJ100 with a 450 mm nominal stroke, 20 mm adjust range, PT1/2 ports, and the TC centre trunnion mounting.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-20)
- ✓ 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 SCJ100 Standard Cylinder SCJ100X450-20TC FAQ
At the standard 0.5 MPa operating pressure, it delivers 3927 N pushing and 3681 N pulling (the difference is due to the 25 mm single rod). At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 7854 N.
Yes, if you need the same 100 mm bore, 450 mm nominal stroke, and PT1/2 ports, but also want the ability to shorten the stroke end by up to 20 mm. Ensure the TC trunnion mounting and TCM1 bracket match your machine's pivot point, and note the SCJ body is slightly longer than the fixed-stroke SC to house the adjusting mechanism.
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