The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X60-20 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 20 mm range without swapping the cylinder. Ø40mm bore, 60mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ40X60-20 is a double-acting, single-rod pneumatic cylinder that lets you fine-tune the stroke end position on the fly. A rear-cap adjusting screw provides up to 20 mm of retraction from the 60 mm nominal stroke, eliminating the need for external hard stops during commissioning or format changes.
At 0.5 MPa, this 40 mm bore unit delivers 628 N of push force and 528 N on the pull stroke. It features a 16 mm diameter piston rod, PT1/4 ports, and a 21 mm air cushion for smooth deceleration. The tie-rod body has a length of 185 mm, making it a compact choice for space-constrained adjustable-stroke applications.
| Model | Airtac SCJ40 Standard Cylinder SCJ40X60-20 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 60 mm |
| Stroke adjustment | Up to 20 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. |
| ×60 | Nominal (maximum) stroke length in mm. |
| -20 | 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.
Perfect for initial machine commissioning where the exact stroke length must be dialed in empirically. The 20 mm adjustment range allows technicians to fine-tune the end position without swapping cylinders.
Ideal for packaging or sorting lines that handle different product sizes. Operators can quickly adjust the cylinder's stroke end to accommodate a new box or item format using only a wrench.
In clamping or pressing fixtures, the adjustable screw can be used to take up mechanical wear on tooling or contact surfaces over time, maintaining consistent clamping force and position.
Choose this model when you need a mid-range force actuator with field-adjustable stroke end positioning. If your application requires more force, stepping up to the 50 mm bore SCJ provides 982 N of push force at the same 0.5 MPa pressure. For a fixed, non-adjustable stroke, the standard SC series offers a simpler, more cost-effective alternative. This cylinder is a direct replacement for any AirTAC SCJ40X60-20 with PT ports and basic mounting. For strokes of 300 mm or more, evaluate side-loading on the rod and consider an external guide or a guided cylinder to prevent bending.
Adjustable-stroke checklist
The push force is 628 N at 0.5 MPa and 1130 N at the maximum operating pressure of 0.9 MPa. The pull force is lower due to the single rod design, providing 528 N at 0.5 MPa.
A screw in the rear cap acts as an internal, adjustable end stop for the piston. By turning the screw, you can shorten the stroke by up to 20 mm from the 60 mm nominal maximum. It adjusts the stroke end position only and does not change the cylinder's force or speed.
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.