Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X500-75
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X500-75 is a genuine double-acting aluminum-barrel mini cylinder with a Ø40mm bore, a 500mm nominal stroke and a rear adjustable-stroke stopper — trim up to 75mm for a usable window of 425–500mm. Adjustable air cushion (both ends).
- BoreØ40 mm
- Stroke500 mm
- Adjustable425–500 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable air cushion (both ends)
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X500-75
The AirTAC MBLCJ40X500-75 is a double-acting, single-rod aluminum mini cylinder engineered for demanding motion control. It integrates a rear stroke adjuster allowing you to trim up to 75 mm of travel, creating a usable end-position window of 425 to 500 mm. Driven through a G1/4 port, it delivers 628 N of push force and 528 N of pull force at 0.5 MPa. A defining feature of this SKU is the adjustable air cushion at both ends, which uses screw-tunable needle valves to decelerate heavy loads smoothly over a 500 mm run, preventing end-cover impact damage.
This model uses a Ø16 mm carbon-steel rod with 20 µm hard-chrome plating to resist scoring, paired with a heterogeneous two-way grease-retaining piston seal inside a riveted rolling-packed barrel. Because this is a full 500 mm stroke, the small 16 mm rod is highly susceptible to side-load bending; an external guide rail is strongly recommended to prevent premature seal failure. Note that this specific configuration lacks a built-in magnet, meaning it cannot support CMSG, DMSG, or EMSG electronic position sensors without changing the SKU. The rear travel stopper sets the stroke endpoint but does not mechanically hold the load in place.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X500-75 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X500-75 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø40 mm |
| Nominal stroke | 500 mm |
| Adjustable window | 425–500 mm (trim 75 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 MBLCJ40X500-75
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 40 | Bore size in mm. |
| ×500 | Nominal stroke length in mm. |
| -75 | 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 MBLCJ40X500-75 Is Used
CNC Lathe Bar Feeder
Pushes raw bar stock into a lathe spindle over the full 500 mm stroke, using the adjustable air cushion to halt the heavy material carriage smoothly without shocking the machine headstock.
Pallet Transfer Diverter
Utilizes the 628 N push force to deflect loaded pallets onto a secondary conveyor line, while the 75 mm rear stroke adjustment lets operators fine-tune the deflection angle without moving the cylinder mount.
Heavy Carton Case Packer
Extends 500 mm to erect large corrugated cartons, relying on the tunable end cushions to decelerate the 16 mm rod assembly rapidly but gently, protecting the packaging mechanics from impact wear.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X500-75 the Right Cylinder?
When sizing this actuator, compare its 628 N push force (at 0.5 MPa) against your actual load dynamics. Stepping down to the 32 mm bore yields 402 N of push force, which may suffice for lighter pick-and-place arms. Stepping up to the 50 mm bore provides 981 N, necessary for shifting heavier machining fixtures. Choose this MBLCJ variant over the MBLJ if your process involves high kinetic energy, as the MBLJ relies solely on a fixed rubber bumper that degrades rapidly under 500 mm stroke impacts. Similarly, choose it over the MBLC if you need to fine-tune the end-of-stroke deceleration rate on-site rather than accepting a fixed cushion profile.
Remember that the 75 mm rear adjuster acts purely as a mechanical travel stop, not a locking device; the cylinder will drift if air pressure is removed. Mounting is restricted to Basic, FA flange, or LB foot brackets—this series explicitly omits SDB pivot and back-cover options. For a direct replacement, match the 40 mm bore, 500 mm stroke, 75 mm adjust code, G1/4 port, PT thread form, and confirm the absence of the -S magnet suffix. Given the 500 mm stroke, always factor in side-load mitigation via an external linear guide.
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 MBLCJ40X500-75 FAQ
This 40 mm bore cylinder uses a G1/4 port and a Ø16 mm rod with an M12x1.25 rod-end thread. At 0.5 MPa it provides 628 N push and 528 N pull force. At 0.7 MPa the push force is 880 N. The maximum theoretical force is 128 kgf at 1.0 MPa.
No. This specific SKU lacks the -S magnet option, so it cannot accept CMSG reed or DMSG/EMSG electronic sensors. Furthermore, the 75 mm rear adjuster is a travel stop that sets the 425-500 mm stroke window, not a load-locking brake; the rod will drift without air pressure. The adjustable air cushion only controls deceleration speed.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
Related AirTAC Adjustable-Stroke Cylinders
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