GPP-2 Flute Ball Nose End Mill

•  High-toughness substrate combined with high-performance coating, especially suitable for pre-hardened steel processing.
•  Positive-angle cutting edge design minimizes chip resistance and brings better appearance.

2 Flute Ball Nose End Mills

Series Code Parameter Dc(h7) Fillet LC L1 SD(h5) Teeth number
GPP GPPB2-01 R0.5*2*50*4 R0.5 50 
GPP GPPB2L-01P R0.5*2*75*6 R0.5 75 
GPP GPPB2-015 R0.75*3*50*4 1.5  R0.75 50 
GPP GPPB2L-015P R0.75*3*756 1.5  R0.75 75 
GPP GPPB2-02 R1*4*50*4 R1 50 
GPP GPPB2L-02 R1*4*75*4 R1 75 
GPP GPPB2L-02P R1*4*75*6 R1 75 
GPP GPPB2-025 R1.25*5*50*4 2.5  R1.25 50 
GPP GPPB2-03 R1.5*6*50*4 R1.5 50 
GPP GPPB2L-03 R1.5*6*75*4 R1.5 75 
GPP GPPB2L-03P R1.5*6*75*6 R1.5 75 
GPP GPPB2-04 R2*8*50*4 R2 50 
GPP GPPB2L-04 R2*8*75*4 R2 75 
GPP GPPB2X-04 R2*8*100*4 R2 100 
GPP GPPB2-05 R2.5*10*50*6 R2.5 10  50 
GPP GPPB2L-05 R2.5*10*75*6 R2.5 10  75 
GPP GPPB2L-06 R3*12*75*6 R3 12  75 
GPP GPPB2-06- R3*12*50*6 R3 12  50 
GPP GPPB2X-06 R3*12*100°6 R3 12  100 
GPP GPPB2-08 R4*16*60*8 R4 14  60 
GPP GPPB2L-08 R4*16*75*8 R4 14  75 
GPP GPPB2X-08 R4*16*100*8 R4 14  100 
GPP GPPB2-10 R5*20*75*10 10  R5 18  75  10 
GPP GPPB2L-10 R5*20*100*10 10  R5 18  100  10 
GPP GPPB2X-10 R5*20*150*10 10  R5 18  150  10 
GPP GPPB2-11 R5.5*22*75*12 11  R5.5 20  75  12 
GPP GPPB2L-11 R5.5*22*100*12 11  R5.5 20  100  12 
GPP GPPB2-12 R6*24*75*12 12  R6 22  75  12 
GPP GPPB2L-12 R6*24*100*12 12  R6 22  100  12 
GPP GPPB2X-12 R6*24*150*12 12  R6 20  150  12 
GPP GPPB2-14 R7*28*100*14 14  R7 26  100  14 
GPP GPPB2L-14 R7*28*150*14 14  R7 26  100  14 
GPP GPPB2-16 R8*32*100*16 16  R8 30  100  16 
GPP   GPPB2L-16   R8*32*150*16 16  R8 30  150  16 
GPP   GPPB2-18   R9*36*100*18 18  R9 34  100  18 
GPP   GPPB2L-18   R9*36*150*18 18  R9 34  150  18 
GPP   GPPB2-20   R10*40*100*20 20  R10 38  100  20 
GPP   GPPB2L-20   R10*40*150*20 20  R10 38  150  20 
FAQ
We use nano-grade substrates, which increase bending strength by 20%. As long as the parameters are matched, the lifespan is very stable, effectively reducing downtime.
No. The chip removal groove is mirror-polished and extremely smooth, allowing chips to be discharged smoothly.
Strictly controlled within 0.003mm with this range, ensure precise hole diameter and avoid enlarging the hole.
Yes. We have a specialized series of nano-coatings that are high-temperature resistant, wear-resistant, and specifically designed for difficult-to-process materials.
Standard sizes are readily available and can be shipped on the same day; custom-made items can be delivered in as little as 7-10 days.

MSU have rich stock for standard micro drills, if have stock, we can ship to you within 3 days. please download our 2026 Micro drills catalogue for speficiation of micro drills.

Every single item has batch traceability. If there’s a quality issue, we respond within 24 hours and offer refund or replacement.

“Our micro drill bit diameter tolerance is strictly controlled within ±0.002mm , and the shank diameter tolerance is h6 standard. Regarding runout, each batch undergoes high-magnification optical inspection before leaving the factory to ensure that the runout is controlled within 0.005mm , minimizing the risk of drill breakage and ensuring the consistency of hole diameter.”

“We offer a variety of coatings, including TiAlN (TiAlN) and DLC (Diamond-like Carbon). To address chip removal challenges, our micro-drills feature mirror-polished chip evacuation grooves . This significantly reduces cutting resistance and prevents built-up edge (BUE) formation, making them particularly suitable for deep hole machining.”

“While our unit price may be slightly higher than that of lower-end brands, by increasing tool life by 30% and reducing scrap rate by 0.5% , your ‘overall machining cost per hole’ is actually lower. For customers with high annual usage, we offer tiered pricing and annual rebate agreements.”

Yes, we can produce as per client’s drawing or request, then our engineer will make drawing for confirmation, we will produce samples for testing after client’s confim.  MSU Provide High-precision machining solutions, improved micro-hole machining yield. wholesale micro-drills, reduced tooling costs.

Yes, our MSU426 series is suitable for stainless steel. 

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