Airtac SCJ100 Standard Cylinder SCJ100X45-40S
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X45-40S 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, 45mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke45 mm
- Stroke adjust-40 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X45-40S
The SCJ100X45-40S is a 100 mm bore double-acting, single-rod air cylinder with a 45 mm nominal stroke, configurable down to 5 mm via a rear-cap adjusting screw. This model includes a built-in magnet (-S suffix), allowing direct mounting of CMSG/DMSG/EMSG reed or solid-state sensors on the tie-rod barrel for non-contact position feedback. It delivers a substantial 3927 N of push force at 0.5 MPa, making it suitable for pressing, clamping, and heavy-duty positioning tasks where the stroke end needs to be dialled in precisely on the machine.
With a 25 mm diameter piston rod and PT1/2 ports, the cylinder body length A is 245 mm. The adjustable stroke feature is invaluable during commissioning and for applications that require periodic stroke-end take-up, such as compensating for tooling wear or changing product formats. The screw shortens the stroke end by up to 40 mm, providing a wide window for fine-tuning without replacing the cylinder or adding external hard stops. The pneumatic cushion is 29 mm long, ensuring smooth deceleration even at the adjusted stroke end.
Airtac SCJ100 Standard Cylinder SCJ100X45-40S Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X45-40S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 45 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 SCJ100X45-40S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×45 | 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 SCJ100X45-40S Is Used
Commissioning & Setup
The 40 mm adjustment screw lets technicians fine-tune the end position during machine setup without swapping cylinders or machining custom stops, dramatically reducing commissioning time.
Tooling Wear Compensation
In pressing or riveting operations, the stroke end can be gradually extended to compensate for electrode or punch wear, maintaining consistent part quality over long production runs.
Format Changeover
On packaging lines, the cylinder's stroke can be quickly adjusted to handle different box sizes or pallet dimensions, enabling a fast changeover between product batches.
Is the Airtac SCJ100 Standard Cylinder SCJ100X45-40S the Right Cylinder?
Choose the SCJ100X45-40S when you need a powerful, field-adjustable end-stop within a 40 mm range. If your force requirement is lower, stepping down to an 80 mm bore SCJ reduces push force to 2513 N at 0.5 MPa, saving air consumption and space. For a fixed stroke with no adjustment, the standard SC100 series is a simpler alternative. This model is a direct replacement for an existing AirTAC SCJ100 with a 45 mm nominal stroke, 40 mm adjust range, PT ports, and a magnetic piston; the F-SC100LB foot mount or F-SC100TC centre trunnion are available if a mounting bracket is needed later. For strokes over 300 mm, consider an external guide rod assembly to protect the 25 mm rod from side-load deflection.
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 SCJ100X45-40S FAQ
At the standard 0.5 MPa operating pressure, the cylinder produces 3927 N of push force and 3681 N of pull force. The maximum push force at 0.9 MPa is 7068 N. The pull force is lower due to the 25 mm piston rod reducing the effective piston area on the return stroke.
A rear-cap screw mechanically limits the piston's stroke end, allowing you to shorten the 45 mm nominal stroke by up to 40 mm. This model's -S suffix means it has a built-in magnet, so you can mount CMSG/DMSG/EMSG sensors directly on the cylinder body to detect the piston position at any point within the adjusted range.
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