Airtac SCJ40 Standard Cylinder SCJ40X60-50
The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X60-50 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 50 mm range without swapping the cylinder. Ø40mm bore, 60mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Nominal stroke60 mm
- Stroke adjust-50 mm
- Port sizePT1/4
- Rod threadM12×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ40 Standard Cylinder SCJ40X60-50
The SCJ40X60-50 is a 40 mm bore double-acting single-rod cylinder whose rear-cap adjusting screw provides up to 50 mm of stroke-end reduction, letting you fine-tune the 60 mm nominal stroke on the machine without swapping parts. Its 16 mm rod and PT1/4 ports deliver 628 N push and 528 N pull at 0.5 MPa, rising to 1130 N push at the 0.9 MPa maximum operating pressure.
Built on the tie-rod SC platform with a 185 mm body length A, this genuine AirTAC cylinder includes an adjustable air cushion for smooth deceleration and suits filtered-air service from 0.15 to 1.0 MPa. The basic mounting configuration accepts the SCJ accessory subset—FA front flange, LB foot, or TC centre trunnion—so you can tailor the installation to your machine layout.
Airtac SCJ40 Standard Cylinder SCJ40X60-50 Technical Specifications
| Model | Airtac SCJ40 Standard Cylinder SCJ40X60-50 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 60 mm |
| Stroke adjustment | Up to 50 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 SCJ40X60-50
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×60 | Nominal (maximum) stroke length in mm. |
| -50 | 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 SCJ40X60-50 Is Used
Commissioning & Setup
The 50 mm adjust range lets technicians quickly dial in the exact stroke end during machine commissioning without cutting brackets or adding external hard stops, saving hours of trial-and-error fitting.
Product Changeover
When packaging lines switch between box sizes, the rear screw adjusts the pusher stroke in seconds—no cylinder swap needed—keeping changeover time under a minute for 40 mm bore actuators.
Wear Compensation
On clamping or pressing fixtures, the adjustable stroke end can be advanced to take up pad or tooling wear over time, maintaining consistent clamp force without replacing the cylinder.
Is the Airtac SCJ40 Standard Cylinder SCJ40X60-50 the Right Cylinder?
Choose the SCJ40 when you need the 628 N push force of a 40 mm bore and the ability to dial in the stroke end by up to 50 mm for commissioning or format changes. If your load requires more force, stepping up to the 50 mm bore SCJ50 delivers 982 N push at 0.5 MPa; if a smaller footprint is critical, the 32 mm bore SCJ32 provides 402 N push.
For a direct replacement, match the 40 mm bore, 60 mm nominal stroke, 50 mm adjust range, PT1/4 ports, and the same SCJ mounting accessory. If your application does not need field-adjustable stroke, the fixed-stroke SC40 offers identical force in a slightly shorter body. For strokes of 300 mm or more, evaluate side-load and rod bending—add an external guide or switch to a guided cylinder if the load is not perfectly axial.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-50)
- ✓ 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 SCJ40X60-50 FAQ
At 0.5 MPa the push force is 628 N and the pull force is 528 N. At the maximum operating pressure of 0.9 MPa, push force reaches 1130 N. The pull force is lower because the 16 mm rod reduces the piston area on the return stroke.
Yes, if you need the 50 mm field-adjustable stroke range. The SCJ40 shares the same 40 mm bore, 16 mm rod, PT1/4 ports, and SCJ mounting accessories (FA, LB, TC). The SCJ body is slightly longer to accommodate the adjusting screw, so check your space envelope.
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