Airtac SCJ100 Standard Cylinder SCJ100X275-100S
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X275-100S 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, 275mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke275 mm
- Stroke adjust-100 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X275-100S
The SCJ100X275-100S is a double-acting, single-rod pneumatic cylinder from the AirTAC SCJ adjustable-stroke series, featuring a 100 mm bore and a nominal stroke of 275 mm. Its defining capability is the rear-cap adjusting screw, which provides a 100 mm range to shorten the stroke end, enabling precise, on-machine fine-tuning without swapping the cylinder. At a standard 0.5 MPa operating pressure, this unit delivers a substantial 3927 N of push force and 3681 N of pull force, making it suitable for heavy-duty positioning tasks.
This specific model includes a built-in magnet (-S), allowing for direct mounting of CMSG, DMSG, or EMSG sensors along the tie-rod barrel for reliable, non-contact end-of-stroke detection. The cylinder uses a 25 mm diameter piston rod, PT 1/2 port threads, and an M20x1.5 rod thread for robust mechanical connections. With a body length of 245 mm, it features a 29 mm air cushion to decelerate the piston smoothly at the end of travel, protecting the end cap from impact.
Airtac SCJ100 Standard Cylinder SCJ100X275-100S Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X275-100S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 275 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 SCJ100X275-100S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×275 | 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 SCJ100X275-100S Is Used
Commissioning & Process Setup
The 100 mm adjust range allows engineers to dial in the exact stopping position for a heavy transfer arm during initial machine commissioning, eliminating the need to fabricate custom hard stops or order multiple fixed-stroke cylinders.
Wear Compensation on Clamping
In high-cycle clamping fixtures for automotive welding, the adjustable stroke can be periodically shortened to compensate for wear on clamping pads, maintaining consistent clamping force without reprogramming the machine.
Multi-Format Packaging Pusher
A case-packing machine pushing boxes of varying widths onto a pallet uses the SCJ's field-adjustable stroke to quickly change the pusher's end position for different product formats, reducing changeover time.
Is the Airtac SCJ100 Standard Cylinder SCJ100X275-100S the Right Cylinder?
Step up to this 100 mm bore when a 63 mm cylinder's 1559 N push force at 0.5 MPa is insufficient for your load. If your application requires a fixed, non-adjustable stroke, the standard SC100X275-S is a more economical alternative. For guided loads or high side-load moments, consider pairing this cylinder with an external guide rail or selecting a guided cylinder to prevent rod bending. A direct replacement must match the 100 mm bore, 275 mm nominal stroke, 100 mm adjust range, PT port thread, and the built-in magnet; the basic mounting style uses the cylinder's own tie-rod nuts for attachment.
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 SCJ100X275-100S FAQ
The theoretical push force at 0.5 MPa is 3927 N, and the pull force is 3681 N. At the maximum operating pressure of 0.9 MPa, the push force reaches 7068 N. The pull force is lower due to the 25 mm piston rod reducing the effective area on the return stroke.
A rear adjusting screw lets you shorten the stroke end by up to 100 mm, so the effective stroke is anywhere between 175 mm and 275 mm. It is a direct dimensional and functional replacement for an SC100X275-S only if you need the adjustability; the SCJ body is slightly longer to house the mechanism and uses the same mounting accessories.
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