Airtac SCJ100 Standard Cylinder SCJ100X70-10
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X70-10 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, 70mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke70 mm
- Stroke adjust-10 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X70-10
The SCJ100X70-10 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. With a 100 mm bore and 25 mm diameter piston rod, it delivers a substantial 3927 N of push force and 3681 N of pull force at 0.5 MPa, making it suitable for medium-to-heavy duty industrial positioning tasks where the final stroke length needs fine-tuning during commissioning or changeover.
This tie-rod cylinder uses a PT1/2 port and has an M20x1.5 rod thread. The adjustable air cushion, with a 29 mm cushion length, decelerates the piston smoothly. Its body length A(SCJ) is 245 mm for the base cylinder, and it operates within a standard pressure range of 0.15-1.0 MPa. The adjustable screw only sets the stroke end position; it does not alter the cylinder's force output or speed.
Airtac SCJ100 Standard Cylinder SCJ100X70-10 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X70-10 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 70 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 SCJ100X70-10
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×70 | 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 SCJ100X70-10 Is Used
End-Stop Calibration
Perfect for commissioning automated test fixtures where the final push position of a probe or clamp must be dialed in precisely on-site to accommodate part tolerances, using the rear screw for quick 10 mm adjustments.
Product Format Changeover
Used on packaging lines to adjust the stroke of a diverter gate or pusher arm. The 10 mm fine-tuning range allows operators to quickly adapt to different box or product sizes without replacing the cylinder.
Wear Compensation in Clamping
In high-cycle clamping operations, the adjustable stroke can be periodically tweaked to compensate for wear on contact pads or tooling, maintaining consistent clamping force without needing immediate part replacement.
Is the Airtac SCJ100 Standard Cylinder SCJ100X70-10 the Right Cylinder?
Choose the SCJ100X70-10 when you require a powerful, 100 mm bore cylinder but need the ability to precisely dial in the stroke end position by up to 10 mm on the machine. This is a step up in force from the 80 mm bore SCJ (2513 N push at 0.5 MPa) and a step down from the 125 mm bore (6136 N push). If your application requires a fixed, non-adjustable stroke, the standard SC100 series is a more economical choice. For a direct replacement, match the 100 mm bore, 70 mm nominal stroke, 10 mm adjust range, PT port thread, and basic mounting style.
For this 70 mm stroke, side-loading is typically not a primary concern, but always ensure the load is guided and aligned axially with the piston rod to prevent premature seal and bearing wear. If the load cannot be perfectly aligned, consider adding an external guide rail.
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 SCJ100X70-10 FAQ
A threaded screw in the rear end cap acts as an internal, adjustable stop for the piston. Turning this screw changes the retracted end position of the stroke by up to 10 mm, allowing you to shorten the 70 mm nominal stroke without disassembling the cylinder. It does not affect the extend stroke or the cylinder's force.
At the standard operating pressure of 0.5 MPa, the SCJ100X70-10 provides 3927 N of push force and 3681 N of pull force. The pull force is lower because the piston rod reduces the effective area on the return side. At its maximum operating pressure of 0.9 MPa, the push force increases to 7068 N.
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