Airtac SCJ100 Standard Cylinder SCJ100X450-40
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X450-40 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 40 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-40 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X450-40
The SCJ100X450-40 is a double-acting, single-rod pneumatic cylinder from AirTAC, engineered with a rear-cap adjusting screw that provides up to 40 mm of field-adjustable stroke-end reduction. This allows you to fine-tune the 450 mm nominal stroke on the machine without dismounting the cylinder or adding external hard stops. With a 25 mm rod diameter and a PT1/2 port, it delivers a substantial 3927 N of push force at 0.5 MPa, scaling to 7068 N at the maximum operating pressure of 0.9 MPa.
Built on a robust tie-rod construction, this cylinder is designed for reliable industrial service with filtered air. The body length A for the SCJ100 series is 245 mm, and the unit features an adjustable air cushion of 29 mm to decelerate the piston smoothly at the end of travel. The standard TPU seal and PT thread configuration suits ambient temperatures from -20 to +70 °C, making it a versatile workhorse for demanding automation tasks requiring precise, repeatable end-position control.
Airtac SCJ100 Standard Cylinder SCJ100X450-40 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X450-40 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 450 mm |
| Stroke adjustment | Up to 40 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 SCJ100X450-40
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×450 | Nominal (maximum) stroke length in mm. |
| -40 | 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 SCJ100X450-40 Is Used
Commissioning & Setup
Fine-tune the end-stop position of a large material pusher or stop gate during initial machine setup. The 40 mm screw adjustment allows operators to dial in the exact 450 mm stroke needed without fabricating custom mechanical stops.
Format Changeovers
Quickly adapt a heavy-duty packaging or palletizing system to handle different product sizes. The adjustable stroke lets a single cylinder manage multiple box heights or pallet positions by simply turning the rear screw.
Wear Compensation
Maintain precise clamping or pressing force on a welding fixture over time. As tooling or contact surfaces wear, the 40 mm adjustment range can be used to extend the effective stroke end, ensuring consistent process quality without immediate cylinder replacement.
Is the Airtac SCJ100 Standard Cylinder SCJ100X450-40 the Right Cylinder?
Select the SCJ100X450-40 when your application demands a powerful 100 mm bore with the flexibility to adjust the stroke end by up to 40 mm during commissioning or changeovers. If your force requirement is lower, stepping down to an 80 mm bore reduces the push force to 2513 N at 0.5 MPa; for even higher demands, the 125 mm bore offers 6136 N. For applications where the stroke is fixed and never needs adjustment, a standard SC100X450 fixed-stroke cylinder is a simpler, cost-effective alternative.
At a 450 mm stroke, managing side loads is critical to prevent rod bending and premature seal wear. If the load is not perfectly guided, pair this cylinder with an external guide rail or consider a guided cylinder assembly. For a direct replacement, match the 100 mm bore, 450 mm nominal stroke, 40 mm adjustment range, PT1/2 port thread, and basic mounting configuration of this SCJ model.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-40)
- ✓ 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 SCJ100X450-40 FAQ
The output force depends on the air pressure. At 0.5 MPa, the push force is 3927 N and the pull force is 3681 N (reduced due to the 25 mm rod area). At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 801 kgf. Always use the push force for clamping or pressing applications.
Unlike a fixed-stroke SC cylinder, the SCJ has a rear adjusting screw that lets you shorten the stroke end by up to 40 mm in the field. This is ideal for fine-tuning the piston's stopping position without removing the cylinder. It does not change the cylinder's force or speed, only the physical end-of-travel point.
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