AirTAC MU4 Free Mount Cylinder, Double Acting, Ø4 Bore
Every stocked AirTAC MU4 free mount cylinder on one page: 12 order codes, 4-20 mm stroke, from $20.43. Pick the stroke, magnet and rod end to see the exact order code and price.
No magnet
This combination is not a stock order code. Request a quote and we will confirm availability and price.
- 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 MU4
The AirTAC MU4 is a small free-mount cylinder with a Ø4 mm bore: the square body can be fixed from any of its four sides, and several cylinders can be mounted side by side to save space. It is double acting: air drives the rod out and back.
A locating boss on the front cover makes positioning accurate, the bore is hard-anodized for wear resistance and the piston uses a compact bidirectional seal. It follows JIS standards and needs no lubrication.
MU4 Technical Specifications
| Model | MU4 |
|---|---|
| Action | Double acting |
| Bore / rod | Ø4 / Ø2 mm |
| Standard strokes | 4, 6, 8, 10, 15, 20 mm (max. 20 mm) |
| Force at 0.5 MPa | Push 6.3 N · pull 4.7 N |
| Port | M3×0.5 |
| Fluid | Air (filtered by 40 µm element) |
|---|---|
| Operating pressure | 0.2-0.7 MPa |
| Proof pressure | 1.2 MPa (175 psi) |
| Temperature | -20 to +70 °C |
| Piston speed | 30-500 mm/s |
| Cushion | None |
| Lubrication | Not required |
Source: AirTAC Products Catalog 2026A (PDF01-P0498..P0499), MU series theoretical force, specifications, strokes and ordering code.
How the MU4 Order Code Is Built
| MU | Free mount cylinder, double acting |
|---|---|
| 4 | Bore (mm) |
| ×4 / 6 / 8 / 10 / 15 / 20 | Standard stroke (mm) |
| B | Male rod thread (blank = plain rod) |
All AirTAC MU4 Order Codes (12)
Each order code links to its own datasheet page. Use Select to load it into the configurator above.
| Order code | Stroke | Magnet | Rod end | Price | Select |
|---|---|---|---|---|---|
| MU4X4 | 4 mm | No magnet | Plain rod | $20.43 | |
| MU4X4B | 4 mm | No magnet | Male thread | $20.43 | |
| MU4X6 | 6 mm | No magnet | Plain rod | $20.43 | |
| MU4X6B | 6 mm | No magnet | Male thread | $20.43 | |
| MU4X8 | 8 mm | No magnet | Plain rod | $20.43 | |
| MU4X8B | 8 mm | No magnet | Male thread | $20.43 | |
| MU4X10 | 10 mm | No magnet | Plain rod | $20.43 | |
| MU4X10B | 10 mm | No magnet | Male thread | $20.43 | |
| MU4X15 | 15 mm | No magnet | Plain rod | $20.90 | |
| MU4X15B | 15 mm | No magnet | Male thread | $20.90 | |
| MU4X20 | 20 mm | No magnet | Plain rod | $21.37 | |
| MU4X20B | 20 mm | No magnet | Male thread | $21.37 |
Need a combination that is not listed? Request a quote.
Where the MU4 Is Used
Small pushers
Pushes, ejects and positions small parts.
Multi-cylinder banks
Several cylinders mount side by side in a row.
Jigs and fixtures
Four mounting faces fit tight spaces in a fixture.
Choosing the Right MU4 Configuration
Choose the stroke: the standard strokes on Ø4 are 4, 6, 8, 10, 15, 20 mm. Maximum stroke is 20 mm; tolerance +1.0/0 mm.
Ø4 has no magnet option.
Rod end: blank is a plain rod on Ø4, B a male thread.
AirTAC MU4 FAQ
At 0.5 MPa the theoretical push force is 6.3 N and the pull force 4.7 N. Bore Ø4, rod Ø2 mm.
From any of the four sides of the body, or several side by side.
MU is double acting. MSU is single acting, push type: air extends the rod and a spring returns it.
0.2-0.7 MPa, proof pressure 1.2 MPa, -20 to +70 °C, piston speed 30-500 mm/s, on air filtered to 40 µm.
No. You can order a single piece. Orders are processed and handed to the carrier within 3-5 business days.
Buying the MU4 from AirtacDistr
Genuine AirTAC parts
Every order code on this page is the AirTAC factory part number. Specifications follow the AirTAC Products Catalog 2026A. About us
Ready in 3-5 business days
That is our time to process the order and hand it to the carrier. No minimum order: a single piece can be ordered.
14-day returns, 1-year warranty
Return within 14 days of delivery; the buyer pays return shipping. The warranty covers defects not caused by misuse. Return policy
Engineering help
Send your application details and we will confirm the right order code, usually within 7-8 hours. Ask us
Page data checked against the live catalog on 2026-11-03.
Request a Quote for the MU4
Send the order code, quantity and destination. We confirm price, stock and lead time, usually within 7-8 hours.