Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X300-10
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X300-10 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 MBLCJ40X300-10
The AirTAC MBLCJ40X300-10 is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and twin adjustable air cushions. A 10mm rear trimmer yields a usable travel window of 290-300mm. Delivering 628N of push force at 0.5MPa, this 40mm bore unit drives heavier slides over its 300mm length. The riveted rolling-packed barrel and 20um hard-chrome plated carbon-steel rod withstand demanding cycles.
Unlike the fixed rubber bumper on an MBLJ, the screw-tunable end cushions let you dial in deceleration for fast moving masses, protecting the end covers. Note this specific SKU lacks the -S magnet, meaning it cannot accept CMSG, DMSG, or EMSG position sensors. The rear adjuster sets the physical travel stop but does not lock the load; external guides are required to prevent rod bending over this 300mm extension.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X300-10 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X300-10 |
|---|---|
| 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 MBLCJ40X300-10
| 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 MBLCJ40X300-10 Is Used
PCB Conveyor Gate
Lifts a hinged conveyor section in a PCB assembly line, using the 290-300mm stroke window to dial in exact gate clearance and the air cushions to prevent slamming at high speeds.
Packaging Flap Folder
Pushes carton flaps during case erecting, where the 628N force handles heavier cardboard and the adjustable cushioning softens the impact at the end of the 300mm travel.
Textile Beam Indexer
Shifts a textile winding beam laterally between processing stations, relying on the tunable rear stopper for precise alignment without over-travel.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X300-10 the Right Cylinder?
Choose this 40mm bore when you need 628N push (528N pull) at 0.5MPa with fine end-position tuning. If your payload is lighter, stepping down to the 32mm bore yields 402N push. If you need more thrust, the 50mm bore provides 981N push. The 10mm rear adjuster trims the stroke window down to 290mm, while the separate air cushion needle controls end-of-stroke deceleration—neither mechanism holds the load in place.
This cylinder is limited to Basic, FA, or LB mounting (no SDB pivot or back-cover options). For a drop-in replacement, match the 40mm bore, 300mm stroke, 10mm adjust code, G1/4 port, M12x1.25 rod thread, PT thread form, and confirm no magnet is required. Because the stroke is 300mm, use an external guide to support the 16mm rod against side loads.
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 MBLCJ40X300-10 FAQ
At 0.5MPa, this 40mm bore cylinder provides 628N push and 528N pull force. At 0.7MPa, the push force increases to 880N. The maximum theoretical force is 128kgf at 1.0MPa. It uses a G1/4 port and a 16mm diameter rod.
This specific SKU lacks the built-in magnet (-S code), so it cannot accept CMSG, DMSG, or EMSG position switches. The 10mm rear adjuster acts only as a travel stop to set the 290-300mm window, and the air cushion only controls deceleration; neither feature locks or holds the load in place.
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