Airtac BSLM Miniature Silencer BSLM02
The AirTAC Airtac BSLM Miniature Silencer BSLM02 is a genuine mini silencer that cuts exhaust noise by 13 dB at 0.5 MPa using a sintered brass sound-absorbing element in an aluminium-alloy body.
- TypeMini silencer
- SeriesBSLM
- Working pressure0 - 1.0 MPa (0 - 10 kgf/cm2)
- Proof pressure1.5 MPa
- Noise reduction13 dB
- Temperature-20 to +70 °C
- 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 BSLM Miniature Silencer BSLM02
Every time a directional valve dumps its air, the escaping pulse cracks like a whip. The BSLM02 screws into that 1/4in PT exhaust port and forces the flow through a brass-particle sintered sound-absorbing cover, spreading the pulse into countless tiny jets. Measured at 0.5 MPa, the result is a 13 dB cut in exhaust noise.
BSLM is the short-stroke member of AirTAC's metal silencer range: it carries exactly the same aluminium-alloy body and sintered brass element as the full-size BSL, packed into a noticeably shorter shell. That makes it the go-to when a manifold's exhaust ports sit so close together that full-length silencers would foul each other, or when a fitting on the exhaust line needs clearance.
Airtac BSLM Miniature Silencer BSLM02 Technical Specifications
| Model | Airtac BSLM Miniature Silencer BSLM02 |
|---|---|
| Type | Mini silencer |
| Series | BSLM |
| Noise reduction | 13 dB at 0.5 MPa |
| Element | Sintered brass sound-absorbing element in an aluminium-alloy body |
| Working pressure | 0 - 1.0 MPa (0 - 10 kgf/cm2) |
|---|---|
| Negative pressure | -750 mmHg (10 Torr) |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Thread standard | PT (Rc tapered) unless the code says otherwise |
POM release button and chuck, aluminium-alloy guide, stainless spring gasket, NBR O-ring; body brass or PBT depending on the part. AirTAC publishes flow as a characteristic curve rather than a single figure, so no L/min value is listed.
Model Code: Airtac BSLM Miniature Silencer BSLM02
| BSLM | Mini silencer. |
|---|---|
| 01 / 02 / 03 / 04 | Thread: 1/8", 1/4", 3/8", 1/2". M5 where the series offers it. |
| D | Black. Blank = grey. |
Choosing a Silencer
- check Sintered-brass types (BSL / BSLM / BESL) give 13 dB and take rough treatment.
- check Resin types (PAL / PALM / PPA) give 25 dB and weigh far less.
- check PPA plugs straight into a tube instead of a thread, and is copper-free for sensitive processes.
- check BESL adds an adjustable throttle, so it silences AND sets exhaust speed in one part.
- check An undersized or clogged silencer shows up as a slow return stroke - size it to the valve's exhaust port.
Where the Airtac BSLM Miniature Silencer BSLM02 Is Used
Packaging valve islands
On a carton-sealing line where 5/2 valve exhausts line up along one manifold, operators stand within arm's reach all shift. The BSLM02's short body fits neighbouring ports without fouling, so every valve can be silenced.
Bench clamping fixtures
A workshop jig with 1/4in-threaded quick exhaust or dump valves fires a sharp crack each clamp cycle. Fitting BSLM02 on each port turns the pulse down 13 dB without adding the length that would foul the fixture frame.
Noise-limit retrofits
When a machine is brought under a workplace noise limit, valve exhaust is often the loudest remaining source. Swapping bare 1/4in exhaust ports for BSLM02 is a low-cost step that removes the periodic air crack from the measurement.
Is the Airtac BSLM Miniature Silencer BSLM02 the Right Part?
Metal or resin is the first decision. Sintered brass, like this BSLM02, takes knocks, hot dry exhaust and dirty shop air without complaint, and holds the 13 dB rating across the whole series. If your priority is the quietest possible exhaust rather than toughness, the resin PAL range reaches 25 dB but will not survive the same abuse. For ports where you also need to slow the cylinder down, step up to the BESL throttling silencer instead.
On the size ladder, BSLM02 sits between BSLM01 (1/8in) below and BSLM03 (3/8in) above, all sharing the same 13 dB figure. Sizing down to a 01 may look tidy but chokes the exhaust and drags out the cylinder's return stroke, so match the BSLM02 to the valve's exhaust port size rather than choosing smaller. If a 1/4in thread is right but space is not the constraint, the full-length BSL02 offers the same element in a taller body.
Quick checklist
- ✓ Tube outside diameter matches exactly
- ✓ Thread size and standard match the port
- ✓ Working pressure within 0 - 1.0 MPa (0 - 10 kgf/cm2)
- ✓ Temperature within -20 to +70 °C
- ✓ Noise target: 13 dB metal or 25 dB resin
Airtac BSLM Miniature Silencer BSLM02 FAQ
Working pressure is 0-1.0 MPa (0-10 kgf/cm2), and the part tolerates vacuum down to -750 mmHg (10 Torr) on the exhaust side. Proof pressure is 1.5 MPa. The allowable temperature range is -20 to +70 C. This SKU is the 1/4in PT-threaded size (code 02) in the BSLM mini series, which also exists in M5, 1/8in, 3/8in and 1/2in. Noise reduction is 13 dB at 0.5 MPa, the figure shared by every sintered-brass silencer in this catalogue.
The thread, the 13 dB rating and the internal element are identical. The difference is body length: BSLM is the mini series, using the same sintered brass element in a shorter shell, while BSL is the full-length version. Choose BSLM02 when exhaust ports sit close together on a manifold or when a fitting downstream needs clearance; choose BSL02 when there is room and you want the longer body. AirTAC also publishes a -S variant of this series with a SUS304 body for corrosive conditions.
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