Airtac SCJ40 Standard Cylinder SCJ40X800-100SH
The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X800-100SH 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, 800mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Nominal stroke800 mm
- Stroke adjust-100 mm
- Port sizePT1/4
- Rod threadM12×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ40 Standard Cylinder SCJ40X800-100SH
The SCJ40X800-100SH is a 40 mm bore double-acting single-rod cylinder with a field-adjustable stroke end, giving you up to 100 mm of rear-screw adjustment to fine-tune the piston stop without swapping the cylinder. At 0.5 MPa it delivers 628 N push and 528 N pull, and its 16 mm rod with 21 mm air cushion handles deceleration reliably over the full 800 mm nominal stroke.
This unit is built with a built-in magnet for CMSG/DMSG/EMSG sensors and Viton (FKM) seals that shift the operating temperature window to 0–150 °C, making it suitable for hot environments where standard TPU would degrade. The PT1/4 port and M12x1.25 rod thread keep it compatible with common AirTAC bracketry, and the body length A(SCJ) is 185 mm.
Airtac SCJ40 Standard Cylinder SCJ40X800-100SH Technical Specifications
| Model | Airtac SCJ40 Standard Cylinder SCJ40X800-100SH |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 800 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 SCJ40X800-100SH
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×800 | 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 SCJ40X800-100SH Is Used
Commissioning & Setup
Dial in the exact stroke end position during machine commissioning without cutting rod extensions or adding shims—the rear screw gives 100 mm of fine adjustment.
Format Changeovers
Quickly re-set the cylinder stroke for different product sizes on packaging or sorting lines, reducing downtime between batch runs.
Wear Take-Up
Compensate for tooling or gripper wear over time by adjusting the stroke end, maintaining consistent part engagement without replacing the actuator.
Is the Airtac SCJ40 Standard Cylinder SCJ40X800-100SH the Right Cylinder?
Choose the SCJ40 when you need to dial in a stroke end on the machine—commissioning trials, format changeovers, or taking up wear—without adding external hard stops. If 628 N push at 0.5 MPa is marginal, stepping up to the SCJ50 (982 N push) gives 56 % more force in the same tie-rod family. For a fixed stroke where the adjust screw is unnecessary, the standard SC40 is the simpler, lower-cost alternative.
At 800 mm nominal stroke, rod buckling and side-load become real considerations. Fit an external guide rail or switch to a guided cylinder if the load is not perfectly axial. For direct replacement, match a genuine AirTAC SCJ40X800-100SH with the same bore, 800 mm nominal stroke, 100 mm adjust range, PT port, and the -S magnet option.
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 SCJ40X800-100SH FAQ
At 0.5 MPa the push force is 628 N and the pull force is 528 N (single-rod area difference). At the maximum operating pressure of 0.9 MPa, push force reaches 1130 N. The theoretical force at 1.0 MPa is 128 kgf.
Yes, if you need the adjustable stroke end. The SCJ40 shares the same bore, rod (16 mm), port (PT1/4), and mounting accessories (FA, LB, TC) as the SC40. Ensure the nominal stroke and adjust range match your application, and note the SCJ body is slightly longer to house the adjusting screw.
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