Raytools BM109 Cutting Head Consumables - Nozzles, Ceramic Ring, Windows and D28 Lenses
The Raytools BM109 is a water-cooled auto-focusing fiber laser cutting head released by Raytools AG in 2017 for sources of 1.5 kW and below. It uses a D28 lens set, a 26 mm clear aperture, and a built-in motor that moves the focusing lens through roughly 17 mm of travel. Its wear parts are the mainstream Raytools M14 set: D32 × M14 × H15 nozzles in a 32 mm ceramic nozzle holder, a Ø24.9 × 1.5 mm collimator protective window, a Ø27.9 × 4.1 mm focus protective window, and a D28 F100 collimating lens with a D28 F125 or F150 focusing lens. SparesZone holds the full set in Ahmedabad for same-day dispatch across India.
What Goes Into a BM109 - The Short Answer
Ordering for this head is simple once you separate two numbers that both appear on its datasheet and describe completely different parts:
- D28 is the lens set. D32 is the nozzle. The collimating and focusing lenses inside a BM109 are 28 mm in diameter. The nozzle that screws into the ceramic holder at the bottom has a 32 mm body with an M14 thread. Both numbers are correct at the same time, and mixing them is the single most common wrong order on this head.
- Two protective window sizes, not one. Ø24.9 × 1.5 mm on the collimator side, Ø27.9 × 4.1 mm on the focus side. They look similar in a sleeve and are not interchangeable - the thicker one is thicker because it is the one absorbing spatter energy.
- The ceramic nozzle holder is the 32 mm / M14 type. The same holder serves the BT240, BT240S, BM110, BM111 and BM114S, so a mixed workshop can keep one holder and one nozzle box for all of them.
Not sure what is fitted to your machine? Send a photo of the head label and the part you are replacing to +91 92740 95891. We identify it and confirm fitment before anything is dispatched.
BM109 Spare Parts and Consumables - Held in Ahmedabad, Shipped Across India
Raytools has moved the BM109 to end-of-life at the factory, and that is exactly why this page exists. A large number of 1 kW and 1.5 kW machines sold in India between 2017 and 2022 carry this head, and they are cutting production work every day. A discontinuation notice at the manufacturer does not stop a shop floor - it just makes some sellers stop stocking the parts. SparesZone keeps the complete BM109 wear-part set physically on the shelf so an eight-year-old head is not a head that waits eight days.
What the BM109 was designed to do. Raytools specified this head for fiber sources at 1.5 kW and below. A built-in motor drives the focusing lens through a linear mechanism across about 17 mm, with an auto-focus window in the region of +8 to -9 mm and positioning accuracy quoted at 0.05 mm. That lets the controller pierce at one focus position and cut at another without an operator touching anything. For 1-6 mm mild steel and thin stainless job work - the daily bread of most of these machines in Ahmedabad, Rajkot and Surat - that specification has not become obsolete.
The optical layout, and why it matters for spares. The BM109 uses a D28 collimating and focusing set, which Raytools chose to hold a diffraction-limited spot at this power class. Above and below those lenses sit cover glass modules in drawer-type mounts, so both windows can be pulled and inspected without opening the beam path. Raytools describes the head as carrying cover glass at top, middle and bottom positions - so when you inspect, do not stop at the one window you can see easily.
Protective windows are the real running cost. On a 1.5 kW head, the Ø27.9 × 4.1 mm window is the only thing standing between spatter and a lens set that costs many times more. Workshops that treat this window as an emergency purchase end up buying focusing lenses. Workshops that keep a small stack in the drawer generally do not. It is the highest-return item in a BM109 spares kit, and it is not a close contest.
A sensible buffer for a single-shift job-work machine. Roughly ten to fifteen nozzles in the tip sizes you actually run, five focus-side windows, two collimator-side windows, one spare ceramic nozzle holder, and one focusing lens in the focal length your machine was configured with. Treat these as starting figures, not gospel - your own replacement log will beat any general guidance inside a month. What the kit really buys is the Saturday evening when a lens cracks and no courier moves until Monday.
Water cooling is an optics issue, not just a diode issue. The BM109 is a water-cooled head. If the chiller setpoint sits below the ambient dew point, moisture condenses on cold optical surfaces inside the head overnight. In humid conditions along the Gujarat and Maharashtra coast this presents as haze that appears by morning and clears by mid-day. Raise the setpoint before condemning any glass.
Raytools BM109 - Specification and the Consumable Each Line Determines
Every figure below drives a purchasing decision. Confirm against the label on your own head, because BM109 units shipped in more than one interface and focal-length configuration:
| Specification | BM109 | What You Order Because of It |
|---|---|---|
| Power rating | 1.5 kW and below | Optics and windows rated for this class - do not fit a BM109 under a higher-power source |
| Year introduced | 2017 (Raytools AG); now end-of-life at the factory | Plan buffer stock rather than relying on on-demand supply |
| Focusing | Auto focus, built-in motor driving the focusing lens | Travel approximately 17 mm; focus faults are drive faults, not consumable faults |
| Auto focus range | Approximately +8 to -9 mm, accuracy 0.05 mm | Reference figure for re-establishing focus zero |
| Lens set diameter | D28 | D28 collimating and D28 focusing lens - never the nozzle size |
| Clear aperture | 26 mm | Beam-handling headroom; not a part you buy |
| Collimating lens | D28, F100 typical | Must suit your fiber interface and beam diameter |
| Focusing lens | D28, F125 or F150 | F125 for thin-sheet detail, F150 for thicker plate and more standoff |
| Collimator protective window | Ø24.9 × 1.5 mm | Upper cover glass - thin, fragile, replace the seal with it |
| Focus protective window | Ø27.9 × 4.1 mm | Lower cover glass - the highest-turnover optic on this head |
| Nozzle fitment | D32 body, M14 thread, H15 height | Single and double layer, tip sizes from 0.8 mm upward |
| Ceramic nozzle holder | 32 mm / M14 type | Shared with BT240, BT240S, BM110, BM111, BM114S |
| Fiber interface | QBH, QD and similar | Affects collimator configuration - check before ordering optics |
| Cooling | Water cooled | Coolant temperature and quality show up as optic contamination |
| Lens mounting | Drawer type | Windows inspectable without opening the beam path |
Nozzle Selection for a 1.5 kW BM109 - Gas First, Thickness Second
Because the BM109 tops out at 1.5 kW, its useful cutting window is narrower than a high-power head and the nozzle chart is correspondingly shorter. Reaching for the largest tips on this head is usually a sign the job belongs on a bigger machine:
| Material and Thickness | Assist Gas | Nozzle Type | Tip Diameter |
|---|---|---|---|
| Stainless or aluminium, under 2 mm | Nitrogen | Single layer | 1.0-1.5 mm |
| Stainless, 2-4 mm | Nitrogen | Single layer | 2.0 mm |
| Thin sheet at maximum feed rate | Nitrogen | High-speed geometry, single layer | 1.2-2.0 mm |
| Mild steel, 1-4 mm | Oxygen | Double layer | 1.2-2.0 mm |
| Mild steel, 5-10 mm | Oxygen | Double layer | 2.0-3.0 mm |
| Mild steel above 10 mm | Oxygen, low pressure | Double layer | 3.0-4.0 mm - at the edge of this head's capability |
Field note: on 1.5 kW machines the most common quality complaint is dross on 6 mm and thicker mild steel. Nine times out of ten the operator is running a tip that is too small and compensating with oxygen pressure. Move one tip size up and reduce the pressure instead - the cut usually cleans up on the first sheet. Both nozzle families for this head sit under standard nozzles and high-speed nozzles.
BM109 Optics - Choosing Focal Length and Reading Window Damage
- F125 versus F150 is a job decision, not an upgrade.
A shorter focal length gives a tighter spot and narrower kerf, which suits thin stainless detail and small holes. A longer focal length gives more depth of focus and standoff, which suits thicker mild steel and forgives sheet that is not perfectly flat. Changing focal length changes every parameter derived from spot size - plan a test sheet, not a live job. - Concentric burn marks are a gas or nozzle problem, not a glass problem.
Scorching around the centre of a Ø27.9 × 4.1 mm window usually means back-reflection or disturbed gas flow from a damaged nozzle. Replace the window, then inspect the nozzle before restarting - otherwise the new window follows the old one inside a shift. - A cloudy collimator window means a seal failed, not that the glass was poor.
The Ø24.9 × 1.5 mm window sits well away from the cut zone and should stay clean for a long time. If it fogs, dirty purge air or coolant vapour is entering the head. Fit new glass with a new seal, and check compressed-air filtration before blaming the part. - Never wipe a Raytools optic dry.
Lint-free lens tissue with isopropyl alcohol, one direction, one pass per tissue, both faces. Dry wiping drags embedded spatter across the coating and turns a cleanable window into scrap. The full laser cutting optics range covers both BM109 window sizes and the D28 lens set.
BM109 Faults That Are Actually Consumable Faults
Support calls on this head follow a pattern. The machine reports something dramatic, the operator opens the controller, and the real cause is a small part in the head. Check these first:
| Symptom | Likely Consumable Cause | First Check |
|---|---|---|
| Height sensor alarm immediately after a nozzle change | Nozzle not fully seated in the M14 ceramic holder | Re-seat by hand, firm final turn, recalibrate |
| Calibration value drifts through the shift | Spatter bridging nozzle face to ceramic ring, or a cracked ring | Brass-brush face and ring; inspect the ring under bright light |
| Cut quality falls off over a few hours, then recovers after a window change | Focus-side Ø27.9 × 4.1 mm window losing transmission | Pull the drawer and view the glass at an angle against a dark background |
| Power at the sheet feels lower than the source rating | Contamination on the focusing lens, usually after a window ran too long | Inspect the lower window first, then the lens face below it |
| Optics hazy in the morning, clear by mid-day | Not a consumable - chiller running below dew point | Raise the coolant setpoint and observe for a few days |
| Focus position no longer matches the program | Not a consumable - motor drive or zero reference | Re-home the focus axis before changing any part |
The BM109 rule worth writing on the machine: contamination travels upward. A nozzle left too long damages the focus-side window; a focus-side window left too long damages the focusing lens. Changing the cheapest part on time is what stops the expensive one from ever being ordered.
Where the BM109 Sits in the Raytools Range
Most Indian workshops running a BM109 eventually add a higher-power machine, and the consumables do not all carry over. This is where the stock lists split:
| Head | Power Class | Lens Group | Nozzle and Ceramic Holder |
|---|---|---|---|
| BM109 | 1.5 kW and below | D28 | D32 M14 H15 / 32 mm M14 holder |
| BM110 | Up to 3.3 kW | D30 | D32 M14 H15 / 32 mm M14 holder |
| BM111 | Up to 3.3 kW | D30 | D32 M14 H15 / 32 mm M14 holder |
| BM114S | 6 kW | D37 | D32 M14 H15 / 32 mm M14 holder |
| BM114 / BM114E | 6 kW | D37 | D28 M11 H15 / 28 mm M11 holder |
| BM115 | 6 / 8 / 12 kW | D37 or D38.1 | D28 M11 H15 / 28 mm M11 holder |
If you are upgrading: a BM110, BM111 or BM114S keeps your existing D32 M14 nozzle stock and 32 mm ceramic holders usable, so only the optics list changes. A BM114, BM114E or BM115 moves to the 28 mm M11 holder and D28 M11 nozzles, and nothing in your nozzle drawer carries over. Plan that changeover before the machine arrives, not after.
Why Workshops Source BM109 Parts from SparesZone
- The full set, not only the fast movers.
Nozzles, 32 mm ceramic holders, both protective window sizes, the D28 collimating and focusing lenses, and the optic-cleaning consumables that go with them - one order, one invoice, one delivery date. - Fitment confirmed before you pay.
Send the head label and the part on WhatsApp. Someone who handles fiber laser spares daily checks it against the model before dispatch. - Same-day dispatch from Ahmedabad.
Orders placed before 3 PM leave the same day. Pan-India delivery in 1-3 business days; Gujarat and Maharashtra often next day. - Support for an end-of-life head, not a pitch to replace it.
If a BM109 still suits your job mix, we will keep it supplied. If your work has genuinely outgrown 1.5 kW, we will say so rather than sell consumables for a head that cannot do the job. - Inspected stock with GST invoicing.
Nozzles checked for concentricity and thread quality, coated optics inspected and sealed before packing, and an ITC-ready GST invoice on every consignment. Bulk and dealer terms from 50 pieces per SKU - WhatsApp +91 92740 95891.
Raytools BM109 - Frequently Asked Questions
A D32 body with M14 thread and H15 height. Single layer for nitrogen cutting of stainless and aluminium, double layer for oxygen cutting of mild steel, with tip sizes selected by sheet thickness. This is the mainstream Raytools fitment, shared with the BT240, BT240S, BM110, BM111 and BM114S, so a mixed workshop running those heads can keep a single nozzle stock. It is not shared with the BM114, BM114E or BM115, which use D28 nozzles with M11 thread.
Because the two numbers describe different parts. D28 is the diameter of the collimating and focusing lens set inside the head. D32 is the outer body diameter of the nozzle that screws into the ceramic holder at the bottom. Both are correct for a BM109 at the same time. If you order a D28 nozzle after reading the lens specification, it will not seat in the 32 mm M14 ceramic holder this head carries. Lenses D28, nozzles D32 M14 - that pairing is worth writing on the machine.
Two published sizes, and they are not interchangeable. The collimator protective window is Ø24.9 × 1.5 mm and sits above the beam path. The focus protective window is Ø27.9 × 4.1 mm and sits below the focusing lens, directly above the nozzle. Raytools describes the head as carrying cover glass at top, middle and bottom positions, so open every drawer when you inspect rather than only the one you reach easily. The focus-side window takes the spatter damage and is replaced most often.
A D28 set. The collimating lens is typically F100, and the focusing lens is supplied as F125 or F150 depending on the work the machine was configured for. F125 gives a smaller spot for thin-sheet detail; F150 gives more depth of focus and standoff for thicker mild steel. Read the marking on your own lens holder before ordering, because a machine builder may have configured it either way - and changing focal length means re-establishing your cutting parameters from a test sheet.
Raytools rates the BM109 series for fiber laser processing at 1.5 kW and below. Its D28 optics, 26 mm clear aperture, cover glass and gas path were all specified for that class. Fitting a BM109 under a higher-power source is a real risk to the optics rather than a mild over-specification. If your job mix has moved to thicker plate or faster nitrogen cutting, a 3.3 kW class head such as the BM110 or BM111 is the correct step - and it keeps your existing D32 M14 nozzle stock usable.
A built-in motor drives the focusing lens through a linear mechanism across roughly 17 mm of travel, giving an auto-focus range in the region of +8 to -9 mm with positioning accuracy quoted at 0.05 mm. Practical point for maintenance: if focus offsets that used to work suddenly need adjusting, verify beam quality before adjusting the program. A clouded focus-side window reduces energy at the sheet and produces the same symptoms as a focus error, and compensating with focus hides the real fault until the lens is damaged.
Start mechanically, not electrically. The capacitive height signal is carried through the nozzle and the ceramic holder, so a nozzle that is loose, cross-started or seated on spatter breaks the circuit and the controller reports a sensor fault. Re-seat the nozzle by hand with a firm final turn and recalibrate. If the alarm persists, clean the nozzle face and the ceramic ring with a brass brush and inspect the ring for hairline cracks. Our laser ceramic ring range covers the 32 mm M14 type this head uses.
Yes. The head is end-of-life at Raytools, but the consumables remain in production and in circulation because the installed base is large. SparesZone holds D32 M14 nozzles in both layer types, 32 mm ceramic nozzle holders, Ø24.9 × 1.5 mm and Ø27.9 × 4.1 mm protective windows, and D28 collimating and focusing lenses in Ahmedabad. A discontinuation notice is a reason to plan buffer stock, not a reason to replace a head that is still cutting to specification.
Inspect the nozzle roughly every 8-10 cutting hours and replace it on any of three signs: dross that no longer responds to parameter changes, a visibly oval or nicked tip, or spatter reaching the lower window more often than it used to. Check the Ø27.9 × 4.1 mm focus-side window at least once a shift on a two-shift operation. Raytools suggests cleaning the collimating and focusing lenses on a two to three month cycle. Record the fitting date on every optic - within a month your own log gives you a replacement interval far more accurate than any general guidance.
Yes. BM109 nozzles, 32 mm ceramic holders, both protective window sizes, D28 lenses and optic-cleaning consumables ship from our Ahmedabad stock to fabrication workshops, OEM machine builders and dealers across India, including Surat, Rajkot, Pune, Ludhiana, Coimbatore, Chennai, Delhi NCR and Hyderabad. Dispatch is same-day on orders placed before 3 PM, delivery is typically 1-3 business days, and every consignment carries a GST-compliant invoice. WhatsApp +91 92740 95891 with your head photo for fitment confirmation.
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Request a BM109 Spares Quote - Fitment Checked Before You Pay
Nozzles, 32 mm ceramic holders, protective windows and the D28 lens set for the Raytools BM109, shipped from Ahmedabad to workshops, OEM builders and dealers across India. Send a photo of your head and the part you need - we confirm the exact fitment, quote with GST, and dispatch the same day.
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