Airtac SCJ100 Standard Cylinder SCJ100X125-10
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X125-10 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 10 mm range without swapping the cylinder. Ø100mm bore, 125mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke125 mm
- Stroke adjust-10 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SCJ100 Standard Cylinder SCJ100X125-10
The SCJ100X125-10 is a double-acting, single-rod pneumatic cylinder from AirTAC, featuring a rear-cap adjusting screw that provides a 10 mm field-adjustable stroke-end range. This allows precise fine-tuning of the piston's stop position without removing the cylinder from the machine. With a 100 mm bore, it generates a substantial 3927 N of push force at 0.5 MPa, making it suitable for medium-to-heavy industrial linear tasks.
This model has a 25 mm piston rod, PT1/2 ports, and a 29 mm air cushion for smooth deceleration. The body length A is 245 mm, and the standard stroke of 125 mm is well within the 1500 mm maximum for this bore. The default configuration uses a TPU seal, PT threads, and a basic mount, with no magnet.
Airtac SCJ100 Standard Cylinder SCJ100X125-10 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X125-10 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 125 mm |
| Stroke adjustment | Up to 10 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 SCJ100X125-10
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×125 | Nominal (maximum) stroke length in mm. |
| -10 | 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 SCJ100X125-10 Is Used
End-Stop Commissioning
Fine-tune the final position of a heavy transfer arm during initial machine setup, using the 10 mm screw adjustment to dial in the exact stop point without reprogramming sensors.
Wear Compensation
Adjust the stroke end to compensate for gradual wear on a clamp pad or tooling tip in a high-cycle assembly fixture, maintaining consistent clamping force without replacing parts.
Product Format Changeover
Quickly adapt a pneumatic pusher on a packaging line to handle a new box size, using the rear screw to shorten the stroke by up to 10 mm for a different product depth.
Is the Airtac SCJ100 Standard Cylinder SCJ100X125-10 the Right Cylinder?
Choose the SCJ100X125-10 when you need a powerful 100 mm bore cylinder but must fine-tune the stroke end by up to 10 mm during setup or changeovers. If your force requirement is lower, stepping down to an 80 mm bore (2513 N push at 0.5 MPa) can reduce air consumption and footprint. For applications needing a fixed, non-adjustable stroke, the standard SC100X125 is a direct alternative. This SCJ cylinder is a direct replacement for any AirTAC SCJ100X125-10 with PT ports and a basic mount; for a magnet-equipped version, order SCJ100X125-10S.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-10)
- ✓ 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 SCJ100X125-10 FAQ
At 0.5 MPa, the push force is 3927 N and the pull force is 3681 N. The push force is higher because the single piston rod reduces the effective area on the return stroke. The maximum push force at the 0.9 MPa operating limit is 7068 N.
Yes, the SCJ100X125-10 has the same envelope dimensions as the fixed-stroke SC100X125 but adds a 10 mm adjustable stroke-end range. Ensure your mounting and port connections (PT1/2) match. The adjustable screw adds a small amount to the overall length.
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