Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X40-10S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X40-10S is a genuine double-acting aluminum-barrel mini cylinder with a Ø40mm bore, a 40mm nominal stroke and a rear adjustable-stroke stopper — trim up to 10mm for a usable window of 30–40mm. Adjustable air cushion (both ends).
- BoreØ40 mm
- Stroke40 mm
- Adjustable30–40 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X40-10S
The AirTAC MBLCJ40X40-10S is a compact double-acting mini cylinder featuring a 40mm bore and a 16mm carbon-steel rod. It delivers 628N push and 528N pull force at 0.5 MPa. A rear travel stopper lets you trim up to 10mm, creating a usable 30-40mm end-position window for exacting mechanical setups. Unlike the base MBLJ with its fixed rubber bumper, this variant integrates a screw-tunable adjustable air cushion at both ends to manage end-of-stroke deceleration.
The built-in magnet (-S) supports CMSG reed and DMSG/EMSG electronic sensors for rod position detection. Its riveted aluminum barrel and grease-retaining piston seal ensure reliable service, while the 20μm hard-chrome plating defends the rod against wear. Note that the rear adjuster is strictly a travel stop, and the cushion only decelerates; neither will mechanically lock or hold a load without continuous air pressure.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X40-10S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X40-10S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø40 mm |
| Nominal stroke | 40 mm |
| Adjustable window | 30–40 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 MBLCJ40X40-10S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 40 | Bore size in mm. |
| ×40 | 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 MBLCJ40X40-10S Is Used
PCB Router Z-Axis
Drives a 40mm routing plunge on a PCB depaneling machine. The 628N force handles the spindle load, while the air cushion prevents jarring stops that could fracture the board.
Dispenser Valve Dosing
Actuates a shot valve for two-part epoxy. Trimming the stroke to 30mm calibrates the exact shot size, and the tunable cushion ensures smooth valve closure without fluid hammer.
Pallet Tray Stopper
Halts aluminum pallets on a conveyor. The 528N pull retracts the stop pin quickly, and the adjustable cushion absorbs the kinetic energy of the incoming tray.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X40-10S the Right Cylinder?
If you need less force, the 32mm bore provides 402N push at 0.5 MPa, whereas stepping up to the 50mm bore yields 981N for heavier payloads. Choose this MBLCJ over the MBLJ when your application's mass or speed requires active deceleration to protect the end covers, or over the MBLC if you need to fine-tune the stroke length.
For drop-in replacement, match the 40mm bore, 40mm stroke, 10mm adjust code, G1/4 port, PT thread, and the -S magnet. Mounting is limited to Basic, FA flange, or LB foot (no SDB or back-cover options). Because the adjuster and cushion are not locks, use an external guide or locking device for position-holding.
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 MBLCJ40X40-10S FAQ
At 0.5 MPa it provides 628N push and 528N pull; at 0.7 MPa push is 880N. The maximum theoretical force is 128 kgf at 1.0 MPa. The 40mm bore has a standard stroke limit of 500mm.
The rear adjuster mechanically limits the stroke by 10mm, setting a 30-40mm travel window. The air cushion uses a screw valve to restrict exhaust air, decelerating the piston near the covers. Neither holds the load; the cushion is for speed control, and the adjuster is a hard stop.
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