Shell & Face Mills — Shank, Arbor & Centring Mount
Shell & Face Mills — Shank, Arbor & Centring Mount
HSS, Nos. 640/640X, 650/650X, 660C/660CX, B650/B650X — light, medium, and heavy-duty mounting styles.
Galtona shell and face mills use the same Serrated Cutter Blade system in four mounting styles, made to suit varying duty — light, medium, or heavy:
- No. 640 / 640X — shank type, for milling small faces, steps, or channels. Standard (640) or heavy-roughing (640X) blade sets.
- No. 650 / 650X — arbor type shell end mills, adaptable to any milling machine or horizontal boring mill via a separate arbor.
- No. 660C / 660CX — centring arbor type; cutter is driven direct by keys in the milling-machine spindle, with the arbor only centring and holding it against the spindle nose — a heavy-duty drive for small face mills.
- B650 / B650X — small face mills built to fit British Standard BS 122-1953 arbors, for shops converting from solid HSS face mills.
Representative sizes — 640/640X (cast iron / heavy duty)
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| Diameter | Code (cast iron) | Blades | Code (heavy duty) | Blades (HD) |
|---|---|---|---|---|
| 3" | 6403 | 8 No. 62-8 | 6403X | 8 No. 62-12 |
| 4" | 6404 | 12 No. 62-6 | 6404X | 10 No. 62-13 |
| 6" | 6406 | 16 No. 62-14 | 6406X | 12 No. 62-22 |
| 8" | — | — | 6408X | 14 No. 62-23 |
Representative sizes — 650/650X arbor type
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| Diameter | dia. "A" | Code (cast iron) | Blades | Code (heavy duty) | Blades (HD) |
|---|---|---|---|---|---|
| 4" | 1 27/64" | 6504 | 12 No. 62-6 | 6504X | 10 No. 62-13 |
| 6" | 1 47/64" | 6506 | 16 No. 62-14 | 6506X | 12 No. 62-22 |
| 8" | 1 47/64" | 6508 | 20 No. 62-14 | 6508X | 14 No. 62-22 |
660C/660CX and B650/B650X follow the same diameter/blade-count progression with their own arbor-specific bore and keyway dimensions — full designation tables available on request.