Airtac SCJ100 Standard Cylinder SCJ100X300-40
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X300-40 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, 300mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke300 mm
- Stroke adjust-40 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X300-40
The SCJ100X300-40 delivers a robust 3927 N of push force at 0.5 MPa, making it a workhorse for mid-to-heavy linear applications that demand on-the-fly stroke tuning. Its 25 mm piston rod and PT1/2 ports handle substantial flow, while the rear adjusting screw provides up to 40 mm of stroke-end reduction without dismounting the cylinder.
This double-acting, single-rod cylinder uses a tie-rod construction and features an adjustable air cushion for smooth deceleration. The body length A(SCJ) is 245 mm, and the unit operates reliably between -20 and +70 °C with the standard TPU seals, suiting general-purpose industrial environments.
Airtac SCJ100 Standard Cylinder SCJ100X300-40 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X300-40 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 300 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 SCJ100X300-40
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×300 | 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 SCJ100X300-40 Is Used
Format Changeovers
Quickly dial in a new stroke end position for packaging machines or palletizers that handle different box sizes, eliminating manual stop adjustments.
Clamping & Pressing
Set a precise clamp depth or press stroke for assembly fixtures. The 40 mm adjustment range allows fine control to avoid part damage or ensure consistent bond lines.
Commissioning & Wear Take-Up
During machine setup, the screw lets you compensate for tooling tolerances. Over time, it can be adjusted to take up mechanical wear in linkages, maintaining cycle accuracy.
Is the Airtac SCJ100 Standard Cylinder SCJ100X300-40 the Right Cylinder?
Choose this 100 mm bore model when your application needs roughly 3900 N of push force. If you require less force, the 80 mm bore delivers 2513 N, while stepping up to the 125 mm bore provides 6136 N at the same pressure. This SCJ is the right choice over a fixed-stroke SC when you need to fine-tune the end position during commissioning or for different product runs.
For this 300 mm stroke, be mindful of side loads which can cause rod bending; use an external guide or switch to a guided cylinder if the load is not perfectly axial. As a direct replacement, match the 100 mm bore, 300 mm nominal stroke, 40 mm adjustment range, PT port thread, and basic mounting. The adjustable range is key—a different -{adj} value will change the cylinder's minimum working stroke.
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 SCJ100X300-40 FAQ
At 0.5 MPa, the push force is 3927 N and the pull force is 3681 N. The maximum push force at the 0.9 MPa operating limit is 7068 N. Because it is a single-rod cylinder, the pull force is always lower due to the rod area.
Only if you need the adjustable stroke feature. The SCJ100X300-40 has a rear screw that shortens the stroke by up to 40 mm, making the body slightly longer than a fixed-stroke SC. It is a direct dimensional match for another AirTAC SCJ100X300-40 with the same port and mounting options.
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