Airtac SCJ100 Standard Cylinder SCJ100X450-75S
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X450-75S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 75 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-75 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X450-75S
The SCJ100X450-75S is a double-acting, single-rod pneumatic cylinder that puts field-adjustable stroke control directly into the rear cap. A 75 mm adjusting screw lets you fine-tune the stroke end position without removing the cylinder or adding external hard stops—ideal for commissioning trials, format changeovers, and wear take-up on long-stroke tooling. At 0.5 MPa, it delivers 3927 N push and 3681 N pull, with a 25 mm rod and PT1/2 ports.
Built with a tie-rod construction and a 29 mm air cushion, this unit includes a built-in magnet (-S suffix), so CMSG, DMSG, or EMSG sensors clamp straight onto the barrel for reliable end-of-stroke sensing. The 450 mm nominal stroke is well within the 1500 mm maximum for the 100 mm bore, and the body length A(SCJ) is 245 mm, giving you a compact footprint for the force class.
Airtac SCJ100 Standard Cylinder SCJ100X450-75S Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X450-75S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 450 mm |
| Stroke adjustment | Up to 75 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 SCJ100X450-75S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×450 | Nominal (maximum) stroke length in mm. |
| -75 | 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 SCJ100X450-75S Is Used
Multi-Product Packaging Stops
A packaging line running multiple box sizes uses the 75 mm adjustment screw to quickly reset the pusher end-stop for each format, eliminating manual shimming and reducing changeover time.
Clamp Stroke Take-Up
In a woodworking clamp station, the adjustable stroke compensates for pad wear over thousands of cycles. Operators tweak the rear screw to maintain consistent clamping pressure without replacing the cylinder.
Long-Stroke Diverter Gate
A 450 mm stroke diverter on a conveyor needs precise end-position tuning during commissioning. The SCJ100X450-75S allows the integrator to dial in the exact gate angle, with sensor feedback via the built-in magnet.
Is the Airtac SCJ100 Standard Cylinder SCJ100X450-75S the Right Cylinder?
Step up to the SCJ125 if your application needs more than 3927 N push at 0.5 MPa—the 125 mm bore delivers 6136 N at the same pressure. If you need a smaller footprint, the SCJ80 provides 2513 N push. The SCJ is the right choice when you need to dial in the stroke end on the machine; if the stroke is fixed and never changes, the standard SC fixed-stroke cylinder is a simpler, lower-cost alternative. For a direct replacement, match the 100 mm bore, 450 mm nominal stroke, 75 mm adjust range, PT port thread, and the -S magnet option. At 450 mm, rod bending under side load is a real risk—use an external guide rail or switch to a guided cylinder if the load is not perfectly axial.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-75)
- ✓ 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 SCJ100X450-75S FAQ
At the standard 0.5 MPa operating pressure, the cylinder produces 3927 N of push force and 3681 N of pull force. At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 7068 N. Because it is a single-rod cylinder, the push force is always greater than the pull force due to the rod area on the return side.
Yes, provided the mounting footprint, port size (PT1/2), and 100 mm bore match. The SCJ body is slightly longer than a fixed-stroke SC to house the adjusting mechanism. For a drop-in replacement of another SCJ, ensure the nominal stroke (450 mm), adjust range (75 mm), and the -S magnet option all match. The adjusting screw only changes the stroke end position; it does not alter the cylinder's force rating.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SCJ Adjustable-Stroke Cylinders
Request a Quote for Airtac SCJ100 Standard Cylinder SCJ100X450-75S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.