Airtac SCJ100 Standard Cylinder SCJ100X250-100TC
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X250-100TC is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 100 mm range without swapping the cylinder. Ø100mm bore, 250mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke250 mm
- Stroke adjust-100 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X250-100TC
The SCJ100X250-100TC is a double-acting, single-rod pneumatic cylinder that puts stroke-end adjustability directly on the machine. Its rear-cap screw lets you shorten the effective stroke by up to 100 mm from the nominal 250 mm, so commissioning teams and maintenance staff can dial in the exact end position without swapping cylinders or adding external hard stops. The 100 mm bore generates a substantial 3927 N of push force at 0.5 MPa, rising to 7068 N at the maximum operating pressure of 0.9 MPa.
This model ships with a centre trunnion (TC) mount, supplied complete with the TCM1 bracket under part code F-SC100TC, making it ready to handle pivoting loads on welding fixtures, clamps, or material-handling linkages. The 25 mm diameter piston rod and PT1/2 ports are standard for the 100 mm bore, and the adjustable air cushion decelerates the piston smoothly at both ends. With a body length A(SCJ) of 245 mm, it fits into layouts where a fixed-stroke cylinder would require time-consuming shimming to achieve the same position repeatability.
Airtac SCJ100 Standard Cylinder SCJ100X250-100TC Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X250-100TC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 250 mm |
| Stroke adjustment | Up to 100 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 SCJ100X250-100TC
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×250 | Nominal (maximum) stroke length in mm. |
| -100 | 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 SCJ100X250-100TC Is Used
Format Changeovers
On packaging or converting lines, the 100 mm stroke adjustment lets operators quickly reset the end stop for different box heights or product sizes without mechanical rework, cutting downtime between batches.
Clamp Stroke Tuning
In welding or assembly fixtures, the screw adjusts the clamp's final position to accommodate part tolerance variations or tooling wear, ensuring consistent clamping force without over-stroking the mechanism.
Diverter Gate Positioning
For material-handling diverters, the 100 mm adjust range fine-tunes the gate's open angle. The TC trunnion mount allows the cylinder body to pivot freely as the gate cycles, reducing rod side-load.
Is the Airtac SCJ100 Standard Cylinder SCJ100X250-100TC the Right Cylinder?
Choose the SCJ100X250-100TC when you need the 100 mm bore's force class—3927 N push at 0.5 MPa—and require on-machine stroke trimming. If your load demands more force, step up to the 125 mm bore, which delivers 6136 N push at the same pressure; for a lighter, more compact solution, the 80 mm bore provides 2513 N push. The TC centre trunnion is the correct mounting choice for pivoting applications, but if the cylinder body must be fixed to a flat surface, select the LB foot mount or FA front flange instead.
For a direct replacement, match the bore (100 mm), nominal stroke (250 mm), and the full 100 mm adjust range. The port thread must be PT, the mounting must be TC with the F-SC100TC trunnion kit, and the cylinder must be a genuine AirTAC SCJ adjustable-stroke unit. At a 250 mm stroke, rod deflection under side load is a design consideration; if the application imposes significant radial force, pair this cylinder with an external guide rail or consider a guided cylinder to protect the rod bearing and seal.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-100)
- ✓ 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 SCJ100X250-100TC FAQ
At 0.5 MPa, the push force is 3927 N and the pull force is 3681 N (the difference is due to the 25 mm single rod). At the maximum operating pressure of 0.9 MPa, push force reaches 7068 N. The rear adjusting screw does not alter these force values; it only sets the stroke end position.
Yes, provided the original cylinder is an AirTAC SCJ adjustable-stroke model with a 100 mm bore, 250 mm nominal stroke, 100 mm adjust range, PT ports, and TC trunnion mount. The SCJ is not dimensionally interchangeable with ISO 15552 cylinders; it is a tie-rod design. Always verify the body length A(SCJ) of 245 mm and the F-SC100TC trunnion bracket fit your existing mounting.
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