Jun. 05, 2026
Standard BT spindle
Only use standard BT holders. Installing BBT holders results in taper-only contact; BBT advantages cannot be realized, causing unnecessary cost waste.
BBT dual-contact spindle
Best option: full BBT holders; standard BT holders are also compatible but run with single taper contact only.
Spindle size reference: BT30 / BT40 / BT50 as marked on machine nameplate.
2.Select based on workpiece material & cutting condition
Mild steel, 45# steel, mass rough milling & drilling
→ Standard BT holders: ER collet, SLN side-lock, C-type power chuck for economical choice.
Mold steel, titanium alloy, aerospace aluminum, deep cavity with long tool overhang & high-precision finishing
→ BBT holders: higher rigidity, no axial pull-in, anti-chatter, longer cutting tool lifespan.
3.Holder styles by tool clamping type
Drills, taps & general end mills: ER collet holder (most popular)
Solid-shank end mills & heavy-duty cutting: SLN side-lock holder, C-type high-power holder
Boring tools: LBK boring holder
Face mill cutters: FMB face milling arbor
Sales Manager:Grace Fu
WhatsAPP:1591107388
Wechat:18053485528
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Tel: +86 534 425 1888
Mob/WhatsApp/Wechat: +86 137 9138 1619
E-mail: jacksun@ht-tools.net
Add.:East Area of Economic Development Area, Pingyuan County, Shandong Province. China 253100
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