Airtac SCJ100 Standard Cylinder SCJ100X500-20
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X500-20 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, 500mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke500 mm
- Stroke adjust-20 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X500-20
The SCJ100X500-20 delivers a substantial 3927 N of push force at 0.5 MPa, making it a workhorse for medium-to-heavy linear applications. Its rear-mounted adjusting screw provides a 20 mm field-adjustable stroke-end range, allowing operators to fine-tune the piston stop position without removing the 25 mm rod or altering the PT1/2 port plumbing.
This double-acting, single-rod cylinder features an adjustable air cushion (29 mm length) for smooth deceleration and a durable tie-rod construction. The 500 mm nominal stroke is well within the 1500 mm maximum standard for the 100 mm bore, ensuring robust, ready-to-ship availability for demanding industrial tasks.
Airtac SCJ100 Standard Cylinder SCJ100X500-20 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X500-20 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 500 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 SCJ100X500-20
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×500 | 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 SCJ100X500-20 Is Used
End-Stop Calibration
The 20 mm adjustment screw is perfect for dialing in the final pressing depth on assembly fixtures during commissioning, eliminating the need for shims or external hard stops.
Product Gate Actuation
Fine-tune the open position of a diverter gate on a conveyor line to handle different package sizes. The 3927 N push force easily manages heavy gates without slowing down.
Wear Compensation
In high-cycle clamping operations, the adjustable stroke can be periodically tweaked to compensate for mechanical wear on tooling or gripper pads, maintaining consistent clamp force over time.
Is the Airtac SCJ100 Standard Cylinder SCJ100X500-20 the Right Cylinder?
Choose this model when you need high push force in a compact footprint; it bridges the gap between the 80 mm bore (2513 N push) and the larger 125 mm bore (6136 N push). Step down to an SCJ80 if your load is lighter and speed is critical, or move up to an SCJ125 for heavy pressing and clamping. For this 500 mm stroke, ensure the rod is guided externally if significant side loads are present, as a long, unsupported stroke can cause rod bending and premature seal wear.
As a direct replacement, match the 100 mm bore, 500 mm nominal stroke, 20 mm adjust range, PT port thread, and basic mounting. If your application requires position sensing, specify the -S magnet option for CMSG/DMSG sensor compatibility. For a fixed-stroke alternative without the rear adjuster, consider the standard SC100X500 cylinder.
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 SCJ100X500-20 FAQ
At the standard 0.5 MPa operating pressure, the push force is 3927 N and the pull force is 3681 N. The maximum push force at 0.9 MPa is 7068 N. Because it is a single-rod cylinder, the push force is always greater than the pull force due to the rod area.
Yes, the SCJ100X500-20 is dimensionally compatible with the SC100X500 for the basic body length, but it is slightly longer due to the rear adjusting mechanism. It allows you to shorten the stroke end by up to 20 mm in the field, a feature the fixed-stroke SC does not have. Ensure your mounting arrangement has clearance for the rear screw.
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