Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X400-100S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X400-100S is a genuine double-acting aluminum-barrel mini cylinder with a Ø40mm bore, a 400mm nominal stroke and a rear adjustable-stroke stopper — trim up to 100mm for a usable window of 300–400mm. Adjustable air cushion (both ends).
- BoreØ40 mm
- Stroke400 mm
- Adjustable300–400 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X400-100S
The AirTAC MBLCJ40X400-100S is a compact, double-acting aluminum mini cylinder featuring a rear stroke adjuster and an adjustable air cushion at both ends. It delivers 628N push and 528N pull force at 0.5MPa, making it well-suited for moving heavier jigs over long 400mm travels. The integrated -S magnet enables CMSG, DMSG, or EMSG solid-state sensor switches to track rod position.
This specific SKU lets you trim up to 100mm at the rear, creating a usable end-position window of 300 to 400mm. Unlike the fixed rubber bumper on an MBLJ, the screw-tunable air cushion allows you to dial in end-of-stroke deceleration for heavy 400mm moves, protecting the end covers from impact. The riveted rolling-packed barrel and 20um hard-chrome plated carbon-steel rod handle speeds up to 800mm/s, but at 400mm of travel, the 16mm rod requires an external guide to prevent side-load bending.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X400-100S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X400-100S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø40 mm |
| Nominal stroke | 400 mm |
| Adjustable window | 300–400 mm (trim 100 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 MBLCJ40X400-100S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 40 | Bore size in mm. |
| ×400 | Nominal stroke length in mm. |
| -100 | 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 MBLCJ40X400-100S Is Used
Servo-Driven Press Ejection
Provides 628N of push force at 0.5MPa to eject stamped metal parts from a 400-ton servo press, using the adjustable cushion to soften the 400mm retraction stop and protect the press tooling.
Wood Panel Conveyor Diverter
Shifts a routing gate along a 300-400mm trimmed window to reroute cabinetry panels on a CNC line, with the tunable air cushion preventing sudden jolts to the heavy aluminum gate.
Automated Welding Torch Positioner
Drives a robotic MIG torch into position for long chassis seams, using the -S magnet to confirm retraction and the 100mm rear stopper to dial in the exact weld standoff distance.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X400-100S the Right Cylinder?
Step down to the 32mm bore (402N push at 0.5MPa) if your payload is lighter and you need a smaller footprint, or step up to the 50mm bore (981N push at 0.5MPa) for heavier lifting. Choose this MBLCJ over the MBLJ when your moving mass demands tunable deceleration rather than a fixed bumper, or over the MBLC when you need the 100mm rear travel stopper to fine-tune the end position.
Remember, the rear adjuster is a travel stop, and the cushion only decelerates; neither holds the load pneumatically, so use an external lock for position holding. Mounting is limited to Basic, FA flange, or LB foot (no SDB pivot or back-cover options), which extends the overall length to A + 2x400 + 100mm. For a direct replacement, match the 40mm bore, 400mm stroke, 100mm adjust code, G1/4 port, PT thread, and -S magnet.
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 MBLCJ40X400-100S FAQ
At 0.5MPa, the 40mm bore provides 628N push and 528N pull force. At 0.7MPa, push increases to 880N. The maximum theoretical force is 128kgf at 1.0MPa, with an operating pressure range of 0.15-1.0MPa.
The adjustable stroke is a rear mechanical stopper that trims the travel window from 300 to 400mm. The adjustable air cushion is a screw-tunable valve that controls end-of-stroke deceleration. Neither acts as a lock; the cylinder drifts without live air, so an external guide and lock are required for this 400mm stroke.
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