Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X40-30S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X40-30S 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 30mm for a usable window of 10–40mm. Adjustable air cushion (both ends).
- BoreØ40 mm
- Stroke40 mm
- Adjustable10–40 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X40-30S
The AirTAC MBLCJ40X40-30S is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and an adjustable air cushion at both ends. A built-in magnet (-S) enables position detection. It delivers 628N push and 528N pull at 0.5MPa, making it highly effective for moderate-force positioning tasks. The rear stopper trims up to 30mm of travel, creating a precise 10-40mm usable stroke window for exact end-of-move placement.
Unlike the fixed rubber bumper found on the MBLJ variant, this model uses screw-tunable pneumatic cushioning to decelerate the rod near each end-cap, absorbing kinetic energy to prevent impact wear. The riveted rolling-packed aluminum barrel pairs with a 20um hard-chrome plated carbon-steel rod and a grease-retaining piston seal for low-friction longevity. Note that the rear adjuster acts only as a mechanical travel stop; it does not lock or hold the load in place without continuous air pressure.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X40-30S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X40-30S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø40 mm |
| Nominal stroke | 40 mm |
| Adjustable window | 10–40 mm (trim 30 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 MBLCJ40X40-30S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 40 | Bore size in mm. |
| ×40 | Nominal stroke length in mm. |
| -30 | 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 MBLCJ40X40-30S Is Used
PCB Router Z-Axis
Drives a 2.2kW spindle router for electronics prototyping, using the 628N push force to plunge carbon bits while the air cushion prevents bounce at the 40mm stroke end.
Dispenser Valve Snubber
Actuates a precision fluid dispenser, relying on the 10-40mm adjustable window to dial in exact shot sizes without reprogramming the PLC logic.
Carton Flap Folder
Folds corrugated box flaps at 30-800mm/s on a packaging line, where the tunable cushioning slows the 528N pull to protect the cardboard from tearing.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X40-30S the Right Cylinder?
If you need less force, the MBLCJ32 bore provides 402N push at 0.5MPa, whereas stepping up to the MBLCJ50 yields 981N for heavier loads. Choose this MBLCJ over the MBLJ when your cycle speeds demand tunable end-cushioning rather than a fixed bumper, or over the MBLC if you need to fine-tune the stroke length rather than using a fixed travel. The overall length extends to A + 2 x 40 + 30, and mounting is restricted to Basic, FA, or LB styles (no SDB or back-cover options). For an exact replacement, match the 40mm bore, 40mm stroke, 30mm adjust code, G1/4 port, PT thread, and the -S magnet specification.
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 MBLCJ40X40-30S FAQ
At 0.5MPa it provides 628N push and 528N pull. At 0.7MPa the push increases to 880N. The maximum theoretical force is 128kgf at 1.0MPa operating pressure.
The rear stroke adjuster is a mechanical stop that trims travel by up to 30mm, setting a 10-40mm usable window. The adjustable air cushion is a screw-tunable valve that bleeds trapped air to decelerate the piston near the end-caps. Neither mechanism locks or holds the load; position holding requires live air or an external guide.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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