Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X350-100S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X350-100S is a genuine double-acting aluminum-barrel mini cylinder with a Ø40mm bore, a 350mm nominal stroke and a rear adjustable-stroke stopper — trim up to 100mm for a usable window of 250–350mm. Adjustable air cushion (both ends).
- BoreØ40 mm
- Stroke350 mm
- Adjustable250–350 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X350-100S
The AirTAC MBLCJ40X350-100S is a compact double-acting aluminum mini cylinder engineered for heavy-duty positioning. It features a rear travel stopper that trims up to 100 mm, creating a usable stroke window of 250-350 mm. Simultaneously, twin screw-tunable air cushions absorb end-of-stroke kinetic energy, protecting the end covers far better than the fixed rubber bumpers found on the base MBLJ series. Delivering 628 N of push force at 0.5 MPa, it drives robust 40 mm bore mechanisms.
This specific SKU includes a built-in magnet (-S) for CMSG reed or DMSG/EMSG electronic position sensing. The riveted aluminum barrel and 20 µm hard-chrome plated carbon-steel rod resist wear, while the heterogeneous two-way grease-retaining piston seal maintains lubrication over long 350 mm traverses. Note that the rear stopper sets the travel end but does not lock the load; external guides are strongly recommended for this 350 mm stroke to prevent rod bending on the Ø16 mm shaft.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X350-100S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X350-100S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø40 mm |
| Nominal stroke | 350 mm |
| Adjustable window | 250–350 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 MBLCJ40X350-100S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 40 | Bore size in mm. |
| ×350 | 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 MBLCJ40X350-100S Is Used
Automated Lathe Tailstock
Advances a tailstock barrel across a 250-350 mm window to seat live centers, using the 628 N push force and tunable cushion to stop heavy spindles smoothly without shock.
Pallet Transfer Diverter
Deploys a diverter arm on a 350 mm packaging line; the rear adjuster dials the exact 250 mm retracted position to clear passing pallets, while the magnet confirms extension.
Textile Calender Nip
Sets a 40 mm bore nip roller against fabric rolls, relying on the 528 N pull force and screw-tunable end cushions to absorb high-speed deceleration without marking the material.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X350-100S the Right Cylinder?
Select this 40 mm bore when a 628 N push (0.5 MPa) or 880 N (0.7 MPa) is required within a 250-350 mm travel window. If your application needs less force, step down to the 32 mm bore (402 N push @0.5 MPa); if you need more power, step up to the 50 mm bore (981 N push @0.5 MPa). Choose the MBLCJ over the MBLJ when your moving mass requires tunable pneumatic deceleration rather than a fixed bumper, or over the MBLC when you need to fine-tune the end position via the rear adjuster.
Remember that neither the rear travel stopper nor the adjustable cushion acts as a mechanical lock; the rod will drift without live air, so use an external locking device for true position holding. Mounting is limited to Basic, FA (flange), or LB (foot) brackets—SDB pivot or back-cover options are not available on the MBLCJ series. To replace this exact unit, match: 40 mm bore, 350 mm stroke, 100 mm adjust code, G1/4 port, PT thread, and the -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 MBLCJ40X350-100S FAQ
This 40 mm bore cylinder uses a G1/4 port and a Ø16 mm rod with an M12x1.25 thread. At 0.5 MPa it provides 628 N push and 528 N pull. At 0.7 MPa the push increases to 880 N, with a maximum theoretical output of 128 kgf at 1.0 MPa.
The rear adjuster physically limits the stroke, offering a usable travel window of 250-350 mm by trimming up to 100 mm. The adjustable air cushion uses needle screws at both ends to tune pneumatic deceleration near the stroke ends. The adjuster is a travel stop, not a lock, and the cushion only decelerates; neither holds the load in place without live air.
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Standard models usually ship in 3-4 days.
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