What is the noise level of the HW-60 Conveyor?

If you’ve worked with SMT (surface mount tech) production lines, you know how chaotic a full shop floor can get—whirring mount machines, clipping cutters, conveyor belts humming nonstop. The HW-60 conveyor is one of the go-to units for small to mid-sized SMT lines, especially when teams are pushing for throughput without blowing out utility or noise costs. As a supplier of these conveyors, I get so many questions: Is it loud enough to hurt hearing after a 10-hour shift? Can you run it next to a desk where engineers are doing design reviews? And most recently, “How does it stack up against other common SMT conveyors?” Let’s break this down, straight from the techs who assemble these units and the line managers who swear by them.

First, let’s set the scene. SMT lines have a range of noise sources that pile up fast. A standard desktop SMT mounter—one of the core machines paired with most HW-60 setups—can hit 75 to 80 decibels (dB) when running at full tilt, right around the volume of busy city traffic or a vacuum cleaner running on high. That’s not trivial; OSHA recommends keeping continuous exposure under 85 dB, because anything higher over an 8-hour shift can cause gradual hearing damage. The HW-60’s noise doesn’t exist in a vacuum, so how does it hold its own?

Here’s the real data we’ve collected: when the HW-60 is running empty (no PCBs on the belt) at its top speed of 1.2 meters per second, the noise level is roughly 62 dB—about as loud as a normal conversation across a small room, or a quiet office AC unit. Run it with a full load of PCBs (10+ 12x18 inch boards stacked and moving steadily), and that jumps to 68 to 70 dB, which is like background music at a low-volume coffee shop. That number is key because that’s the exact use case for most teams buying these conveyors—they’re not just moving empty belts; they’re shuttling populated PCBs between the mounter, the solder paste printer, and the reflow oven.

Wait, why is it quieter than a lot of older conveyors? The HW-60 uses a brushless DC motor, not the old brushed motors that whine and vibrate like a tired power tool. We also added a few tweaks when we redesigned it in 2021: a closed, vibration-dampening frame that stops the motor’s hum from transferring to the conveyor’s metal rails, and a polyurethane belt instead of the old rubber one that slipped and squealed when it got warm. Those small changes made a huge difference in the noise profile—before that, we had customers complaining the conveyor was loud enough to make it hard to hear the mounter’s status alerts, a common pain point for line supervisors.

Of course, context matters. If your line is crammed with three HW-60s, a reflow oven blowing hot air at 78 dB, and a pick-and-place machine humming at 80 dB, the total ambient noise will creep up closer to 75 dB, even with the HW-60’s low noise. But that’s not a flaw in the conveyor—that’s just how line noise stacks. The HW-60’s noise is consistent, not the jarring, erratic squeal from cheaper conveyors that make you flinch every time a PCB slides into the next slot.

Let’s compare that to the other conveyor we offer, the HW-J100, which is built for higher-volume, heavier 24/7 lines. That one hits a steady 72 dB with a full load, so it’s a little louder, but that’s because it’s built for larger, thicker PCBs and has a more robust motor to handle the extra wear. If you’re wondering about the line pairing, most of our HW-60 buyers use it with a desktop SMT mounter, since it’s compact enough for small labs or lines that don’t have 10-foot ceiling clearances. We’ve also got customers running the HW-60 in clean rooms, where noise control and particle emissions are just as important as throughput—its sealed motor doesn’t blow dust into the air, which is a bonus for those settings.

I’ve heard a lot of folks ask if the HW-60’s noise level affects productivity. Short answer: yes, but not in the way you’d think. Line workers who have to shout over constant loud noise get fatigued faster, leading to more missed alerts or slower PCB loading. The HW-60’s lower noise means teams don’t have to yell, they can hear the mounter’s error beeps from 10 feet away, and they don’t have to wear extra hearing protection that makes communication harder. We had a customer in Austin a few months back switch from a competing conveyor to the HW-60, and their line supervisor said their morning shift fatigue dropped by almost 30%—that’s a direct result of the noise being bearable for a full 8 hours.

Another thing we test is noise at different speeds. The HW-60 runs at three preset speeds (0.6, 0.9, and 1.2 m/s). At the lowest speed, it’s 58 dB—about as loud as a library whisper. Most small lines don’t need to run at top speed all the time, so that’s a big win for teams that are prototyping or running small batches, not high-volume production. The competing conveyors we tested had a 10 dB jump between low and high speed; the HW-60 only jumps 6 dB, so even when you crank it up for fast runs, the noise doesn’t spike drastically.

I should also mention that these are lab-tested numbers, not just marketing fluff. Every HW-60 that leaves our facility gets a 10-minute run test, and we log both its speed and noise level to make sure it’s within spec. We’ve had third-party acoustics labs verify these numbers for our clean room clients, who need official documentation for their ISO certifications. If you’re comparing specs from other suppliers, make sure they’re giving you continuous noise level (A-weighted, which is the standard for workplace noise) not just peak noise—peak numbers are meaningless for 8-hour shifts.

Now, let’s be real: no conveyor is completely silent. If you stick your head right up to the HW-60’s motor housing when it’s running, you’ll hear a faint whine, and the belt will make a soft shush as it moves. But that’s the kind of noise you don’t notice after a minute, not the kind that makes you reach for earplugs before you even fire up the line.

So, when should you care about the HW-60’s noise level? If you’re setting up a line in a small space where office space is adjacent—like a startup lab where engineers work right next to the line—this is a big deal. If you’re running a 24/7 high-volume line in a separate shop, you might prioritize throughput over noise, but even then, the HW-60’s lower noise means you don’t have to soundproof the line room as much. If you’re prototyping, testing new PCBs, or have a small team that works closely with the line, the HW-60’s noise is a non-issue, whereas a cheaper conveyor could be a constant distraction.

At the end of the day, the HW-60 is built for balance: it’s reliable, fits into tight spaces, and doesn’t add unnecessary noise to your line. If you’re looking for a conveyor that pairs well with a desktop SMT mounter, or you’re comparing our HW-60 to the HW-J100 for your specific line needs, the link to our product page has all the detailed specs, including more in-depth noise data. If you have questions about how this would work for your shop floor, or you’re ready to get pricing and lead times, feel free to reach out. We’ve helped hundreds of teams size their SMT lines, and we can help you find the right conveyor for your needs without the guesswork.

References

1. Occupational Safety and Health Administration (OSHA). (2023). Noise: Exposure Limits and Hearing Conservation. U.S. Department of Labor.
2. International Organization for Standardization (ISO). (2021). ISO 11201: Acoustics – Noise emitted by machinery and equipment.
3. SMT Industry Association. (2022). 2022 SMT Line Noise Benchmark Report.
4. Manufacturer’s Internal HW-60 Acoustics Test Data, Version 2.1 (2023).