Airtac SCJ40 Standard Cylinder SCJ40X175-100TC
The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X175-100TC 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. 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 SCJ40X175-100TC
This SCJ40X175-100TC is a double-acting, single-rod pneumatic cylinder that puts fine stroke-end adjustment at your fingertips. With a 100 mm adjustable range on the rear cap, you can dial in the exact 175 mm nominal stroke your application needs without swapping the cylinder or adding external hard stops. The 16 mm piston rod and PT1/4 ports deliver 628 N of push force at 0.5 MPa, making it a solid mid-range actuator for tasks that need frequent tweaking.
The centre trunnion (TC) mount, supplied with its TCM1 bracket, lets the cylinder pivot during operation, which is ideal for swinging arms and articulating mechanisms. The 21 mm air cushion at each end decelerates the piston smoothly, protecting the end caps during high-cycle work. Its tie-rod construction keeps it serviceable, and the body length A(SCJ) of 185 mm provides a compact reference for machine layout.
Airtac SCJ40 Standard Cylinder SCJ40X175-100TC Technical Specifications
| Model | Airtac SCJ40 Standard Cylinder SCJ40X175-100TC |
|---|---|
| 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 SCJ40X175-100TC
| 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 SCJ40X175-100TC Is Used
Commissioning & Setup
Fine-tune the end position of a material stop or pusher during initial machine setup without machining new brackets. The 100 mm adjustment range lets technicians quickly dial in the perfect stroke.
Product Changeover
Adjust the stroke of a diverter gate on a conveyor line when switching between product sizes. The rear screw provides a repeatable mechanical stop that operators can reset in seconds.
Wear Compensation
Take up mechanical play in a clamping or pressing fixture over time. As tooling wears, the adjustable stroke end lets you restore the original clamping position without replacing the cylinder.
Is the Airtac SCJ40 Standard Cylinder SCJ40X175-100TC the Right Cylinder?
Step up to the SCJ50 bore if you need more muscle—it provides 982 N of push at the same 0.5 MPa. For a fixed, non-adjustable stroke, the standard SC40 is a simpler, lower-cost alternative. If your load needs external guidance to prevent rod bending on this 175 mm stroke, consider pairing the cylinder with a linear guide or switching to a guided cylinder. This model is a direct replacement for another AirTAC SCJ40X175-100 with a centre trunnion (F-SC40TC) and PT ports.
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 SCJ40X175-100TC FAQ
At 0.5 MPa, it generates 628 N pushing and 528 N pulling. The push force is higher because the single rod reduces the piston area on the return side. At the maximum operating pressure of 0.9 MPa, the push force reaches 1130 N.
Yes, if you need the ability to adjust the stroke end. The SCJ40X175-100TC matches the SC40 bore and port size but adds a rear adjusting screw. Ensure your mounting is compatible with the centre trunnion (TC) and that the slightly longer body length fits your machine envelope.
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