Airtac SCJ40 Standard Cylinder SCJ40X175-100S
The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X175-100S 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. Ø40mm bore, 175mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Nominal stroke175 mm
- Stroke adjust-100 mm
- Port sizePT1/4
- Rod threadM12×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ40 Standard Cylinder SCJ40X175-100S
The SCJ40X175-100S is a double-acting, single-rod pneumatic cylinder with a 40 mm bore and a nominal 175 mm stroke, featuring a rear-cap adjusting screw that provides a 100 mm field-adjustable range. At 0.5 MPa, it delivers 628 N of push force and 528 N on the pull stroke, making it a capable mid-range actuator for tasks requiring on-the-fly stroke end tuning. The built-in magnet allows direct mounting of CMSG/DMSG/EMSG sensors for reliable position feedback.
This tie-rod cylinder uses a 16 mm diameter piston rod with an M12x1.25 male thread and PT1/4 ports. The adjustable air cushion is 21 mm long, and the SCJ body length A is 185 mm. The operating pressure range is 0.15 to 1.0 MPa, with a standard temperature range of -20 to +70 °C and a speed range of 30 to 800 mm/s.
Airtac SCJ40 Standard Cylinder SCJ40X175-100S Technical Specifications
| Model | Airtac SCJ40 Standard Cylinder SCJ40X175-100S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 175 mm |
| Stroke adjustment | Up to 100 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/4 |
| Rod thread | M12×1.25 |
| 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, 21 mm |
| Max stroke | Up to 1200 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 SCJ40 Standard Cylinder SCJ40X175-100S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×175 | 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 SCJ40 Standard Cylinder SCJ40X175-100S Is Used
Commissioning & Setup
The 100 mm adjustment range lets technicians fine-tune the stroke end position during machine commissioning without swapping cylinders, speeding up line setup for new product formats.
Wear Take-Up
In high-cycle pick-and-place or clamping stations, the stroke can be gradually extended via the rear screw to compensate for gripper pad wear, maintaining consistent contact force over time.
Format Changeover
Quickly adapt the actuator throw for different box sizes or product heights on a packaging line by adjusting the screw stop, eliminating the need for mechanical hard stops or multiple cylinder sizes.
Is the Airtac SCJ40 Standard Cylinder SCJ40X175-100S the Right Cylinder?
Choose the SCJ40X175-100S when you need a robust 40 mm bore actuator with a long, 100 mm stroke-end adjustment range for commissioning or format changes. If your force requirement is lower, stepping down to a 32 mm bore SCJ reduces push force to 402 N at 0.5 MPa; for significantly higher force, a 50 mm bore SCJ provides 982 N. This adjustable-stroke model is ideal when the exact stroke length is uncertain, whereas a fixed-stroke SC40 is a simpler, more compact choice if the stroke is final.
For a direct replacement, match the 40 mm bore, 175 mm nominal stroke, 100 mm adjustment range, PT ports, and the S magnet option. This model uses a basic mount; if a pivot mount is needed, the TC centre trunnion is available. For strokes of this length, ensure the load is guided to prevent excessive side-loading and rod bending, or consider an external guide rail.
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 SCJ40 Standard Cylinder SCJ40X175-100S FAQ
At the standard operating pressure of 0.5 MPa, the push force is 628 N and the pull force is 528 N. The maximum push force at the 0.9 MPa operating limit is 1130 N. The theoretical force at 1.0 MPa is 128 kgf.
A screw in the rear cap acts as an internal, adjustable end-stop for the piston. Turning the screw shortens the stroke by up to 100 mm from the nominal 175 mm maximum. It sets the stroke end position but does not lock the piston or hold a load when air pressure is removed.
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