Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X30-30
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X30-30 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 MBLCJ40X30-30
The AirTAC MBLCJ40X30-30 is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and an adjustable air cushion at both ends. It delivers 628 N of push force and 528 N of pull force at 0.5 MPa. The 30 mm nominal stroke combined with a 30 mm rear trimmer yields a usable travel window of 0 to 30 mm, allowing you to dial in the exact end position for short, high-impact moves.
Unlike the base MBLJ which relies on a fixed rubber bumper, this model uses screw-tunable end-of-stroke deceleration to protect the end covers and reduce shock during rapid actuation. The 16 mm carbon-steel rod features 20 um hard-chrome plating for wear resistance, while the riveted rolling-packed barrel ensures structural integrity. Note that this specific SKU lacks a built-in magnet (-S), meaning it cannot support CMSG, DMSG, or EMSG position sensors.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X30-30 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X30-30 |
|---|---|
| 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 MBLCJ40X30-30
| 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 MBLCJ40X30-30 Is Used
PCB Edge Router Clamping
Provides 628 N of precise clamping force to hold printed circuit boards inside an edge routing machine, with the 0-30 mm travel window allowing micro-adjustments for varying panel thicknesses.
Stator Winding Tensioner
Regulates wire tension in an electric motor stator winding station, using the adjustable air cushion to decelerate the 16 mm rod smoothly and prevent snapping delicate copper wire at stroke end.
Bottle Cap Pre-Feeder
Actuates a diverter gate in a cap sorting bowl, where the tuned cushioning absorbs the kinetic energy of high-speed capping components without relying on a fixed rubber bumper.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X30-30 the Right Cylinder?
Stepping down to the 32 mm bore reduces your push force to 402 N at 0.5 MPa, whereas stepping up to the 50 mm bore increases it to 981 N. Choose the MBLCJ40X30-30 when you need the 628 N thrust in a very short, precisely defined travel distance. If your application does not require end-of-stroke deceleration, the fixed-bumper MBLJ saves complexity; if you need fixed full-stroke travel, the MBLC is the alternative.
The rear adjuster acts purely as a mechanical travel stop and does not hold the load, while the air cushion only decelerates—neither functions as a lock. Mounting is limited to Basic, FA (flange), or LB (foot) styles, as this series omits back-cover and SDB pivot options. For a drop-in replacement, match the 40 mm bore, 30 mm stroke, 30 mm adjust code, G1/4 port, PT thread, and confirm no magnet is required.
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 MBLCJ40X30-30 FAQ
At 0.5 MPa, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. At 0.7 MPa, the push force increases to 880 N. The maximum theoretical force is 128 kgf at 1.0 MPa.
This specific SKU lacks the -S code, meaning it has no built-in magnet and cannot accept CMSG, DMSG, or EMSG position sensors. The rear mechanism allows you to trim up to 30 mm of travel, creating a 0 to 30 mm usable window. This adjustable stroke acts as a travel stop, while the separate adjustable air cushion tunes end-of-stroke deceleration—neither component will lock or hold the load in place.
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