The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X75-40TC is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 40 mm range without swapping the cylinder. Ø40mm bore, 75mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ40X75-40 is a double-acting, single-rod pneumatic cylinder with a rear-cap adjusting screw that provides up to 40 mm of field-adjustable stroke-end reduction, letting you fine-tune the 75 mm nominal stroke without swapping the unit. At 0.5 MPa it delivers 628 N push and 528 N pull, driven by a 16 mm diameter piston rod through PT1/4 ports.
This 40 mm bore tie-rod cylinder includes a centre trunnion pivot (TC mount) with the TCM1 bracket, making it ideal for applications where the cylinder body needs to swing through an arc. The adjustable air cushion decelerates the piston smoothly, and the body length A(SCJ) is 185 mm, keeping the package compact for machinery with limited space.
| Model | Airtac SCJ40 Standard Cylinder SCJ40X75-40TC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 75 mm |
| Stroke adjustment | Up to 40 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.
| 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.
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×75 | Nominal (maximum) stroke length in mm. |
| -40 | 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.
Fine-tune the end stop during machine build without removing the cylinder. The 40 mm screw range lets technicians dial in the exact stroke for gripper close or part-present sensing.
Adjust the stroke end to accommodate different product heights on a packaging line. The centre trunnion mount allows the cylinder to pivot, simplifying linkage alignment.
Take up mechanical slack in a clamping or pressing station over time. A quick turn of the rear screw restores full clamping force without disassembling the tooling.
Choose the SCJ40X75-40 when your process needs a mid-range force actuator with the ability to dial in the stroke end position during commissioning or after tooling wear. If 628 N of push force is marginal, stepping up to the 50 mm bore SCJ50 series provides 982 N at the same 0.5 MPa pressure. For applications that do not require stroke adjustment, the fixed-stroke SC40 cylinder offers a simpler, lower-cost alternative. This model is a direct replacement for another AirTAC SCJ40X75-40 with PT ports and TC mount, matching bore, nominal stroke, and 40 mm adjust range.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, it generates 628 N of push force and 528 N of pull force. The push force is higher because the single rod reduces the effective piston area on the return stroke. At the maximum 1.0 MPa, theoretical push force reaches 1280 N.
Yes, this SCJ40X75-40 is a direct form-fit-function replacement for any AirTAC SCJ40 cylinder with a 75 mm nominal stroke and 40 mm adjustable range, provided the original also used PT ports and a TC centre trunnion mount. Always verify the mounting bracket code (F-SC40TC) matches your existing setup.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.