Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X300-10S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X300-10S is a genuine double-acting aluminum-barrel mini cylinder with a Ø40mm bore, a 300mm nominal stroke and a rear adjustable-stroke stopper — trim up to 10mm for a usable window of 290–300mm. Adjustable air cushion (both ends).
- BoreØ40 mm
- Stroke300 mm
- Adjustable290–300 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X300-10S
The AirTAC MBLCJ40X300-10S 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 push and 528 N pull at 0.5 MPa. The integrated -S magnet enables position feedback via CMSG reed or DMSG/EMSG solid-state switches.
This model trims up to 10 mm at the rear, creating a precise 290-300 mm usable travel window. Unlike the base MBLJ with its fixed rubber bumper, the screw-tunable cushioning here decelerates heavy 300 mm moves to protect the end covers. The riveted rolling-packed barrel and 20 um hard-chrome carbon-steel rod handle rapid 30-800 mm/s cycles. The rear stopper sets the travel end but does not hold the load; the cushion only decelerates, so external locking is needed for position holding.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X300-10S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X300-10S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø40 mm |
| Nominal stroke | 300 mm |
| Adjustable window | 290–300 mm (trim 10 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 MBLCJ40X300-10S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 40 | Bore size in mm. |
| ×300 | Nominal stroke length in mm. |
| -10 | 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 MBLCJ40X300-10S Is Used
Textile Loom Beater
Drives the 300 mm beating motion at 628 N push, using the tunable air cushion to halt the heavy reed frame smoothly without shocking the loom frame.
Packaging Flap Folder
Trims 10 mm at the rear to hit exactly 290 mm for custom carton sizes, while the adjustable cushion softens the end-of-stroke impact for rapid 800 mm/s folding.
Pallet Dispenser Pusher
Separates empty pallets in a high-speed line; the 528 N pull retracts the 16 mm rod reliably, and the DMSG sensor confirms retraction for the PLC.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X300-10S the Right Cylinder?
Stepping down to the 32 mm bore drops output to 402 N push at 0.5 MPa, while moving up to the 50 mm bore increases thrust to 981 N. Choose this 40 mm bore when your payload sits firmly in the 60-70 kgf range. The MBLCJ suits high-inertia 300 mm strokes better than the fixed-bumper MBLJ, and offers rear-end trimming unlike the fixed-stroke MBLC. Mounting is limited to Basic, FA flange, or LB foot (no SDB pivot or back-cover). For a drop-in replacement, match the 40 mm bore, 300 mm stroke, 10 mm adjust code, G1/4 port, PT thread, and -S magnet. Because this stroke reaches the 300 mm mark, the 16 mm rod is susceptible to side-load bending; always guide the load externally.
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 MBLCJ40X300-10S FAQ
At 0.5 MPa it provides 628 N push and 528 N pull. At 0.7 MPa the push increases to 880 N. The maximum theoretical force is 128 kgf at 1.0 MPa.
The rear adjuster trims travel by 10 mm, giving a 290-300 mm usable window, acting as a mechanical stop. The adjustable air cushion is a screw-tunable valve that decelerates the piston near the end covers. Neither holds the load; you need external locking for that.
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Standard models usually ship in 3-4 days.
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