Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X40-40
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X40-40 is a genuine double-acting aluminum-barrel mini cylinder with a Ø40mm bore, a 40mm nominal stroke and a rear adjustable-stroke stopper — trim up to 40mm for a usable window of 0–40mm. Adjustable air cushion (both ends).
- BoreØ40 mm
- Stroke40 mm
- Adjustable0–40 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X40-40
The AirTAC MBLCJ40X40-40 is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and an adjustable air cushion at both ends. With a 40mm nominal stroke and a 40mm rear trimmer, you can dial the usable travel window down to 0-40mm. Driven by a Ø16 carbon-steel rod through a G1/4 port, it delivers 628N push and 528N pull at 0.5MPa. The riveted rolling-packed barrel and grease-retaining two-way piston seal keep friction low and service life high in tight machine cavities.
Because this SKU lacks the -S magnet code, it cannot host a CMSG, DMSG, or EMSG position sensor. The screw-tunable end cushions absorb kinetic energy at stroke ends, protecting the end covers from impact—unlike a fixed rubber bumper. The rear adjuster sets the travel stop but does not lock the load; a separate external guide or locking device is required to hold position against gravity or side loads.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X40-40 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X40-40 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø40 mm |
| Nominal stroke | 40 mm |
| Adjustable window | 0–40 mm (trim 40 mm) |
| Acting type | Double acting |
| Port size | G1/4 |
| 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 air cushion (both ends) |
| Max standard stroke | Up to 500 mm |
The rear stopper sets the end position — it is a travel stop, not a lock. Overall length = A + 2 × stroke + adjustable stroke. MBLJ/MBLCJ mounting is Basic / FA / LB only (no SDB, no back-cover code). Thread options: PT / G / NPT.
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 | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a margin.
Model Code: Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X40-40
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 40 | Bore size in mm. |
| ×40 | Nominal stroke length in mm. |
| -40 | Adjustable-stroke amount (mm you can trim at the rear). |
| S | Optional built-in magnet for a CMSG/DMSG/EMSG sensor switch. |
Related: MBLJ (adjustable stroke, fixed bumper), MBL (fixed stroke), MBLD (double rod).
Where the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X40-40 Is Used
PCB Router Z-Axis
Drives a spindle carriage up and down on a printed-circuit-board depaneling router, using the 0-40mm stroke window to set exact plunge depth while the air cushion prevents end-cover shock.
Label Applicator Tamp
Applies adhesive labels to cartons on a packaging line, relying on the 628N push force to overcome peel resistance and the tunable cushion to stop the tamp pad smoothly.
Small Press Ejection
Ejects formed blanks from a 40-ton mechanical press, using the 528N pull force to retract the part stripper while the adjustable stroke dials the ejection height.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X40-40 the Right Cylinder?
If 628N of push force is more than your mechanism requires, step down to the Ø32 bore, which yields 402N push at 0.5MPa. For heavier indexing, step up to the Ø50 bore, which provides 981N push. The MBLCJ is preferred over the MBLJ when you need tunable end-deceleration instead of a fixed bumper, and over the MBLC when you need to trim the stroke length. Remember that the rear adjuster is a travel stop, not a load lock—the cushion only decelerates, so external locking is needed if the rod must hold position. Mounting is limited to Basic, FA flange, or LB foot brackets; there is no SDB pivot or back-cover option. To replace this exact unit, match the 40mm bore, 40mm stroke, 40mm adjust code, G1/4 port, PT thread, and confirm no magnet is fitted.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Adjustable window fits your end position
- ✓ Adjuster is a travel stop, not a lock
- ✓ Magnet (S) for sensors?
- ✓ Side load — add a guide on long strokes
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 stopper for the end position (a travel stop, not a lock).
- check Avoid side load; add an external guide on long strokes.
- check Mounting: Basic / FA flange / LB foot (no SDB, no back-cover code).
- check Installation by qualified personnel per AirTAC docs.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X40-40 FAQ
At 0.5MPa, this Ø40 cylinder provides 628N push and 528N pull. At 0.7MPa, the push force is 880N. The maximum theoretical force is 128kgf at 1.0MPa.
This specific SKU has no built-in magnet (-S), so it cannot accept CMSG, DMSG, or EMSG position switches. The rear adjuster trims travel from 0 to 40mm but acts only as a travel stop; it does not lock the load, and the air cushion only decelerates the piston.
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