Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X100-40
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X100-40 is a genuine double-acting aluminum-barrel mini cylinder with a Ø20mm bore, a 100mm nominal stroke and a rear adjustable-stroke stopper — trim up to 40mm for a usable window of 60–100mm. Adjustable air cushion (both ends).
- BoreØ20 mm
- Stroke100 mm
- Adjustable60–100 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM8×1.25
- 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 MBLCJ20X100-40
The AirTAC MBLCJ20X100-40 is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and tunable air cushioning at both ends. It delivers 157 N of push force and 132 N of pull force at 0.5 MPa. The integrated rear stopper allows you to trim up to 40 mm of travel, creating a usable stroke window of 60 to 100 mm for precise end-positioning.
Unlike the base MBLJ which relies on a fixed rubber bumper, this model uses screw-tunable air cushions to decelerate the rod at each end, absorbing kinetic energy to protect the end covers during faster cycles. The 8 mm carbon-steel rod features 20 um hard-chrome plating to resist scuffing, while the heterogeneous two-way grease-retaining piston seal maintains lubrication over the 30-800 mm/s speed range. Note that this specific SKU lacks a built-in magnet, so it cannot support CMSG, DMSG, or EMSG position sensing.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X100-40 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X100-40 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø20 mm |
| Nominal stroke | 100 mm |
| Adjustable window | 60–100 mm (trim 40 mm) |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M8×1.25 |
| 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 300 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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | — |
| Max (@1.0 MPa) | 32 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 MBLCJ20X100-40
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 20 | Bore size in mm. |
| ×100 | Nominal stroke length in mm. |
| -40 | 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 MBLCJ20X100-40 Is Used
PCB Depaneling Saw
Provides 157 N of push force to advance a circular saw blade through a PCB panel, using the 60-100 mm adjustable stroke window to set the exact cutting depth limit.
Micro-Dispense Valve
Triggers a small pneumatic adhesive valve using the tunable air cushion to soften the rod's impact at the end of the 100 mm stroke, preventing splashing.
Small Part Ejector
Pushes lightweight plastic caps out of a mold cavity, relying on the 20 um hard-chrome plated 8 mm rod to survive repetitive fast ejections without side-load scoring.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X100-40 the Right Cylinder?
If you need less force, stepping down to the 20 mm bore is not an option, but moving to a smaller 12 mm class cylinder would drastically reduce your output below the 157 N available here; stepping up to the 25 mm bore increases your push force to 245 N at 0.5 MPa for heavier payloads. Choose the MBLCJ over the MBLJ when your cycle speed requires active deceleration rather than a passive rubber bumper, or choose the MBLC if you require a fixed stroke without the rear adjustment mechanism. Remember that the rear adjuster is a travel stop, not a lock, and the air cushion only decelerates; neither will hold a load in place without live air pressure. Mounting is limited to Basic, FA flange, or LB foot brackets, as this series lacks back-cover or SDB pivot options. To match this exact replacement, specify bore 20, 100 mm stroke, 40 mm adjust code, G1/8 port, PT thread, and no 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 MBLCJ20X100-40 FAQ
At 0.5 MPa, this 20 mm bore cylinder provides 157 N of push force and 132 N of pull force. At 0.7 MPa, the push force is 220 N. The maximum theoretical force is 32 kgf at 1.0 MPa, with a proof pressure of 1.5 MPa.
This SKU lacks the -S magnet option, so it cannot accept CMSG, DMSG, or EMSG electronic position switches. Additionally, the 40 mm rear adjustment is a travel stop that sets the end position, not a lock; it will not hold a load in place without continuous air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC Adjustable-Stroke Cylinders
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