Airtac SCJ100 Standard Cylinder SCJ100X80-75S
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X80-75S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 75 mm range without swapping the cylinder. Ø100mm bore, 80mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke80 mm
- Stroke adjust-75 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X80-75S
The SCJ100X80-75S is a double-acting, single-rod pneumatic cylinder from AirTAC, featuring a 100 mm bore and an 80 mm nominal stroke. A rear-cap adjusting screw provides a 75 mm field-adjustable range, allowing you to fine-tune the stroke end position without swapping the cylinder. It delivers a substantial 3927 N of push force at 0.5 MPa, making it a powerful solution for heavy-duty positioning tasks.
This model includes a built-in magnet (-S suffix), enabling direct mounting of CMSG, DMSG, or EMSG sensors along the tie-rod barrel for reliable end-of-stroke detection. The 25 mm piston rod and PT1/2 ports handle high flow rates, while the 29 mm air cushion decelerates the piston smoothly. With a body length A of 245 mm, it is a compact yet robust unit for applications requiring both high force and precise, on-machine adjustability.
Airtac SCJ100 Standard Cylinder SCJ100X80-75S Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X80-75S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 80 mm |
| Stroke adjustment | Up to 75 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 SCJ100X80-75S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×80 | Nominal (maximum) stroke length in mm. |
| -75 | 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 SCJ100X80-75S Is Used
Commissioning & Setup
The 75 mm adjustment range lets technicians quickly dial in the perfect stroke end for a new machine without cutting rods or adding external hard stops, dramatically reducing commissioning time.
Product Format Changeover
On a packaging line, switching between box sizes often requires a different pusher stroke. The SCJ100X80-75S allows operators to adjust the stroke end in seconds to match the new format.
Wear Compensation
In high-cycle clamping or pressing fixtures, mechanical parts can wear over time. The rear adjusting screw provides a simple way to take up slack and restore the precise clamping position without disassembly.
Is the Airtac SCJ100 Standard Cylinder SCJ100X80-75S the Right Cylinder?
Select the SCJ100X80-75S when you need a high-force actuator with the flexibility to dial in the stroke end during commissioning or changeovers. If your force requirement is lower, stepping down to an 80 mm bore reduces push force to 2513 N at 0.5 MPa; for even greater force, the 125 mm bore provides 6136 N. This adjustable-stroke model is ideal when the exact stroke length is unknown at design time or may need periodic tweaking, unlike a fixed-stroke SC cylinder.
For a direct replacement, match the 100 mm bore, 80 mm nominal stroke, 75 mm adjust range, PT port thread, and the -S magnet option. This SCJ model accepts the SCJ-specific mounting subset: FA front flange, LB foot, or TC centre trunnion. For strokes of 300 mm or more, always evaluate side-load and rod bending; an external guide or a guided cylinder is recommended to protect the rod and bearings in long-stroke applications.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-75)
- ✓ 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 SCJ100X80-75S FAQ
At 0.5 MPa, the push force is 3927 N and the pull force is 3681 N. The push force is higher because the single rod reduces the effective piston area on the return stroke. The maximum operating force at 0.9 MPa is 7068 N of push.
A screw in the rear cap acts as an internal, adjustable end-stop for the piston. Turning the screw changes the stroke end position by up to 75 mm from the nominal 80 mm maximum. It adjusts the stroke length only, not the cylinder's force or speed, and it is not a locking device.
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