Airtac SCJ32 Standard Cylinder SCJ32X70-50
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X70-50 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. Ø32mm bore, 70mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke70 mm
- Stroke adjust-50 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X70-50
The SCJ32X70-50 is a double-acting, single-rod pneumatic cylinder with a 32 mm bore and a nominal 70 mm stroke, featuring a rear adjusting screw that provides a 50 mm field-adjustable range. This allows operators to fine-tune the stroke end position without removing the cylinder from the machine, delivering 402 N of push force at 0.5 MPa. The 12 mm diameter piston rod and PT1/8 port ensure a compact, reliable package for light automation tasks.
Built on a durable tie-rod construction, the SCJ32X70-50 includes an adjustable air cushion (21 mm long) to decelerate the piston smoothly at the end of travel. This model is a genuine AirTAC component, designed for consistent performance in filtered-air systems with operating pressures from 0.15 to 1.0 MPa.
Airtac SCJ32 Standard Cylinder SCJ32X70-50 Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X70-50 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 70 mm |
| Stroke adjustment | Up to 50 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/8 |
| Rod thread | M10×1.25 |
| 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 1000 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 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 SCJ32 Standard Cylinder SCJ32X70-50
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×70 | 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 SCJ32 Standard Cylinder SCJ32X70-50 Is Used
Commissioning & Setup
The 50 mm adjustment range lets technicians dial in the exact stroke end during machine commissioning, eliminating the need to swap cylinders or fabricate custom stops for small-bore pick-and-place units.
Wear Compensation
In clamping or pressing fixtures, the adjustable screw can be used to take up mechanical wear on tooling or workpieces over time, maintaining consistent contact force without reprogramming the machine.
Format Changeovers
For small product diverters or sorting gates on packaging lines, the stroke can be quickly adjusted to handle different box or product widths, reducing downtime during batch changes.
Is the Airtac SCJ32 Standard Cylinder SCJ32X70-50 the Right Cylinder?
Choose the 32 mm bore SCJ when your application requires a compact cylinder with up to 402 N of push force. If you need more power, stepping up to the SCJ40 bore provides 628 N of push force at the same 0.5 MPa pressure. For applications where the stroke length is permanently fixed and never needs field adjustment, the standard SC series fixed-stroke cylinder is a more economical choice. This SCJ32X70-50 is a direct replacement for another AirTAC SCJ32 cylinder with a 70 mm nominal stroke, 50 mm adjust range, PT ports, and basic mounting.
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 SCJ32 Standard Cylinder SCJ32X70-50 FAQ
At 0.5 MPa, this cylinder provides 402 N of push force and 345 N of pull force. The maximum push force at the 0.9 MPa operating limit is 724 N. The pull force is lower because the rod reduces the effective piston area on the return stroke.
A rear-cap screw sets the stroke end position within a 50 mm range from the nominal 70 mm maximum. It is a mechanical stop for the piston, not a speed or force control. It directly replaces another SCJ adjustable-stroke cylinder with the same bore, stroke, and adjust range, but it is not a drop-in replacement for a fixed-stroke SC cylinder due to its longer body length.
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