Raytools BM110 Consumables: D32 M14 Nozzle, 24.9 and 27.9 Windows
BM110 in one line: a 3 kW-class 2D head with an M14 thread, not M11
The BM110 is the head most workshops meet first in the Raytools range: a 2D auto-focus unit rated around 3 kW, 28 mm clear aperture, focus travel −12 to +10 mm. The part that decides whether your order is right is the nozzle thread: D32 body, M14 — not the M11 that the BOCI and Precitec D28 bodies use.
Specification and what it implies for parts
| Item | Value | What it changes when ordering |
|---|---|---|
| Power class | ≈3 kW | Window power rating; nothing above 6 kW belongs on this head |
| Clear aperture | 28 mm | Collimating / focus lens diameter |
| Collimation | F75 or F100 | Lens group, printed on the module |
| Focus | F125 / F155 / F200 | Lens group; check the marking, not the model |
| Nozzle | Flat D32 × M14; 3D option D15 × M8; small-ceramic option D28 × M11 | Body diameter, thread, bore, layer type |
| Ceramic ring | D32-M14 | The ring is M14; an M11 ring will not seat |
| Protective windows | Collimating-side Φ24.9×1.5; focus-side Φ27.9×4.1 | Two different windows on one head — measure both |
| Lens holder | Drawer type | Window format: drawer, not cartridge |
The two-window trap
The BM110 carries a protective window on the collimating side and another on the focus side. They are different diameters and different thicknesses: Φ24.9×1.5 and Φ27.9×4.1. Most “the window does not fit” complaints on this head are one of these two being ordered for the other position — the parcel arrives, the drawer closes, and the beam still hazes. Mark the positions when you take the old ones out.
How to confirm a BM110 order
- Nameplate photo (BM110 vs BM110S matters less here than on the 114, but read it anyway).
- Old nozzle on a rule — D32 body, 15 mm tall, and the M14 thread is unmistakable next to an M11.
- Both windows, each labelled with which side it came from.
- We confirm ring thread, nozzle thread and the two window sizes in one reply.
Where BM110 orders go wrong
- Ordering an M11 nozzle. The D28 / M11 body is the BOCI and Precitec pattern; on a BM110 it will not thread, however close the bore looks.
- One window size for both positions. Φ24.9×1.5 and Φ27.9×4.1 are not interchangeable.
- Replacing optics for a focus drift that is a window. On a head that has not crashed, change the window and check gas first.
FAQ
Is the BM110 the same as the BM111 or BM114?
Same generation, different heads. The BM114 has an M11 ring variant (see the BM114 page), and the BM111 shares the D32 M14 pattern with the BM110. Thread and ring are the parts that differ — not the look of the head.
Which lens diameters do you stock for the BM110?
The D30 family for focus and collimating groups, with F125 as the common stock focal length and F155 / F200 to order. Focal length is confirmed from the marking on your old module.
Sources
Raytools ceramic-ring size table (D32-H12-M14 → BM110 / BM111 / BT240 / BT240S), BM110 head specification (≈3 kW, 28 mm aperture, window sizes), and a second independent parts listing for the nozzle configuration. Read 2026-11-09.
Related categories
Ruiying is an independent supplier of aftermarket laser consumables. Brand names are used only to indicate compatibility and remain the property of their respective owners. We are not affiliated with, authorised by, or endorsed by these manufacturers. Specifications vary between head revisions — please confirm the full model before ordering.