Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X30-30S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X30-30S is a genuine double-acting aluminum-barrel mini cylinder with a Ø40mm bore, a 30mm nominal stroke and a rear adjustable-stroke stopper — trim up to 30mm for a usable window of 0–30mm. Adjustable air cushion (both ends).
- BoreØ40 mm
- Stroke30 mm
- Adjustable0–30 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X30-30S
The AirTAC MBLCJ40X30-30S is a compact double-acting mini cylinder featuring a 40mm bore and a 30mm stroke. It integrates a rear stroke adjuster allowing you to trim up to 30mm at the rear, yielding a usable travel window of 0-30mm. Delivering 628N of push force at 0.5MPa, this aluminum-bodied actuator is built for applications needing exact end-position tuning. The riveted barrel and 20µm hard-chrome plated carbon-steel rod ensure mechanical stability in tight spaces.
Unlike the base MBLJ which relies on a fixed rubber bumper, this MBLCJ variant incorporates an adjustable air cushion at both ends. This screw-tunable deceleration allows you to safely manage heavier or faster loads by absorbing kinetic energy before the end cap is struck. The built-in magnet (-S) supports CMSG reed and DMSG/EMSG electronic sensors for precise position detection. Note that the rear stopper sets the travel end and the cushion only decelerates; neither component mechanically locks or holds the load.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X30-30S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X30-30S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø40 mm |
| Nominal stroke | 30 mm |
| Adjustable window | 0–30 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 MBLCJ40X30-30S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 40 | Bore size in mm. |
| ×30 | 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 MBLCJ40X30-30S Is Used
PCB Router Z-Axis
Lifts and lowers a spindle on a PCB depaneling machine, using the 0-30mm stroke window to precisely set the cutting depth while the air cushion prevents abrupt stops.
Dispenser Valve Actuation
Drives a pneumatic glue dispenser, relying on the 628N force to open high-flow valves and the tunable cushions to eliminate fluid splashing at stroke ends.
Connector Insertion
Presses IDC connectors onto ribbon cables in an electronics assembly line, using the adjustable stopper to set exact insertion depth without crushing the housing.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X30-30S the Right Cylinder?
Select this 40mm bore when you need 628N push (528N pull) at 0.5MPa. If your application requires less force, stepping down to the 32mm bore yields 402N push, while moving up to the 50mm bore provides 981N push for heavier payloads. Choose the MBLCJ over the MBLJ when your cycle speeds demand tunable end-cushioning rather than a fixed bumper, or over the MBLC when you need that rear travel adjustment. Mounting is limited to Basic, FA flange, or LB foot brackets; there is no SDB pivot or back-cover option available. For a direct replacement, match the 40mm bore, 30mm stroke, 30mm adjust code, G1/4 port, PT thread, and the -S magnet. Even at this short 30mm stroke, external guidance is recommended to prevent rod side-loading bending forces.
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 MBLCJ40X30-30S FAQ
At 0.5MPa, this 40mm bore double-acting cylinder provides 628N of push force and 528N of pull force. At 0.7MPa, the push force increases to 880N. The maximum theoretical force is 128kgf at 1.0MPa.
The adjustable stroke is a rear mechanical stopper that lets you trim the travel window down to 0-30mm, setting the exact end position. The adjustable air cushion is a separate screw-tunable valve that controls end-of-stroke deceleration. Neither feature locks or holds the load; the cylinder requires live air to maintain position.
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