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GM Series Micro Long Reach Carbide Ball End Mill

Ultra-precision R0.15-R0.45mm micro long reach ball nose end mills with TiSiN coating for deep cavity steel 3D contouring. Extended flute length (2-10mm) enables deep pocket milling in stainless steel, alloy steel ≤38HRC. 2-flute design ensures optimal chip evacuation in deep 3D profiles.

R0.15mm - R0.45mm Radius 2-Flute Long Reach Ball TiSiN Coated Extended Flute 2-10mm ≤38 HRC Deep Cavity Steel 3D
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GM Series Micro Long Reach Carbide Ball End Mill
GM Series Micro Long Reach Carbide Ball End Mill

Procurement & Commercial Terms for Micro Long Reach Ball Tools

MOQ5 pcs (micro long reach ball minimum) | 50 pcs (bulk pricing)
Lead Time3–5 days (standard micro long reach) | 10–15 days (custom lengths)
InventoryR0.15mm–R0.45mm with various flute lengths in stock. Extended lengths require careful handling
Special HandlingIndividual protective tubes + anti-static packaging for micro long reach ball tools
Quality Guarantee100% inspection under microscope. Replacement for any deflection or precision defects
ShippingDHL/FedEx Express with tracking | Anti-vibration packaging mandatory

Why Choose GM Micro Long Reach Ball Nose for Deep Cavity Steel 3D Machining?

Extended 3D Reach Capability

Flute lengths from 2mm to 10mm enable deep cavity 3D contouring impossible with standard ball nose tools. Ideal for deep micro mold cavities and deep pockets in steel components with superior reach.

TiSiN Heat Resistance

TiSiN coating provides superior heat resistance in deep cavity 3D operations where heat concentration is critical. Prevents premature tool wear in micro long reach steel ball nose machining.

Deep Cavity 3D Chip Evacuation

2-flute ball nose design provides maximum chip evacuation space in deep 3D pockets. Prevents chip packing and breakage in stainless steel and alloy steel deep cavity contouring.

Optimized Ball Core Rigidity

Optimized core diameter maximizes tool rigidity at extended lengths. Reduces deflection and vibration in deep cavity steel 3D machining for consistent precision and surface finish.

GM Micro Long Reach Ball Nose Specifications (R0.15-R0.45mm)

GM Micro Long Reach Ball Nose Specifications (R0.15-R0.45mm)

ModelR (mm)D (mm)H(h1+h2) (mm)d (mm)L (mm)Stock
GM-2BS-0.15-0.3-2-4-500.150.32(0.6+1.4)450● In Stock
GM-2BS-0.15-0.3-3-4-500.150.33(0.6+2.4)450● In Stock
GM-2BS-0.15-0.3-4-4-500.150.34(0.6+3.4)450● In Stock
GM-2BS-0.2-0.4-2-4-500.20.42(0.8+1.2)450● In Stock
GM-2BS-0.2-0.4-3-4-500.20.43(0.8+2.2)450● In Stock
GM-2BS-0.2-0.4-4-4-500.20.44(0.8+3.2)450● In Stock
GM-2BS-0.2-0.4-5-4-500.20.45(0.8+4.2)450● In Stock
GM-2BS-0.2-0.4-6-4-500.20.46(0.8+5.2)450● In Stock
GM-2BS-0.25-0.5-2-4-500.250.52(1+1)450● In Stock
GM-2BS-0.25-0.5-3-4-500.250.53(1+2)450● In Stock
GM-2BS-0.25-0.5-4-4-500.250.54(1+3)450● In Stock
GM-2BS-0.25-0.5-6-4-500.250.56(1+5)450● In Stock
GM-2BS-0.25-0.5-8-4-500.250.58(1+7)450● In Stock
GM-2BS-0.25-0.5-10-4-500.250.510(1+9)450● In Stock
GM-2BS-0.3-0.6-2-4-500.30.62(1.2+0.8)450● In Stock
GM-2BS-0.3-0.6-3-4-500.30.63(1.2+1.8)450● In Stock
GM-2BS-0.3-0.6-4-4-500.30.64(1.2+2.8)450● In Stock
GM-2BS-0.3-0.6-6-4-500.30.66(1.2+4.8)450● In Stock
GM-2BS-0.3-0.6-8-4-500.30.68(1.2+6.8)450● In Stock
GM-2BS-0.35-0.7-3-4-500.350.73(1.4+1.6)450● In Stock
GM-2BS-0.35-0.7-4-4-500.350.74(1.4+2.6)450● In Stock
GM-2BS-0.35-0.7-6-4-500.350.76(1.4+4.6)450● In Stock
GM-2BS-0.35-0.7-8-4-500.350.78(1.4+6.6)450● In Stock
GM-2BS-0.35-0.7-10-4-500.350.710(1.4+8.6)450● In Stock
GM-2BS-0.4-0.8-3-4-500.40.83(1.6+1.4)450● In Stock
GM-2BS-0.4-0.8-4-4-500.40.84(1.6+2.4)450● In Stock
GM-2BS-0.4-0.8-6-4-500.40.86(1.6+4.4)450● In Stock
GM-2BS-0.4-0.8-8-4-500.40.88(1.6+6.4)450● In Stock
GM-2BS-0.4-0.8-10-4-500.40.810(1.6+8.4)450● In Stock
GM-2BS-0.45-0.9-3-4-500.450.93(1.8+1.2)450● In Stock
GM-2BS-0.45-0.9-4-4-500.450.94(1.8+2.2)450● In Stock
GM-2BS-0.45-0.9-6-4-500.450.96(1.8+4.2)450● In Stock
GM-2BS-0.45-0.9-8-4-500.450.98(1.8+6.2)450● In Stock
GM-2BS-0.45-0.9-10-4-500.450.910(1.8+8.2)450● In Stock

All sizes in stock | Radius tolerance: ±0.005mm | Spherical runout: <0.005mm | Surface finish: Ra≤0.2μm | Custom radius/flute lengths available upon request

Micro Long Reach Ball Tool Handling: Extended flute ball nose tools require rigid setup and optimized 3D stepover strategies. Use precision collets (ER11/ER16), minimize overhang, and employ tilt angles (5-15°) to prevent zero cutting speed at ball center. Always use climb milling for deep 3D contouring.

Material Compatibility for Micro Deep Cavity 3D Steel Machining

Workpiece MaterialSuitabilityDeep 3D Machining Notes
Stainless Steel (304, 316)◎ ExcellentTiSiN coating prevents work hardening in 3D contours. Use low speeds (15-35 m/min) with flood coolant
Alloy Steel (42CrMo, S45C)◎ ExcellentExcellent for pre-hardened steels ≤38HRC. Maintain constant stepover in 3D toolpaths
Tool Steel (SKD11, SKD61)◎ ExcellentUse conservative parameters for deep 3D profiling. TiSiN provides heat resistance for micro ball operations
Pre-hardened Steel (NAK80)◎ ExcellentIdeal for deep micro mold 3D cavities. Use climb milling and constant Z stepover
Carbon Steel (A36, 1045)◎ ExcellentGood machinability for 3D features. Can use higher feeds than stainless
Aluminum / Copper✗ Not RecommendedUse ALC Series for non-ferrous 3D. GM Series optimized for steel

◎ = Excellent for Micro Deep Cavity 3D Steel | ✗ = Not Recommended | GM Micro Long Reach Ball Series is optimized for steel ≤38HRC. For aluminum or copper micro 3D machining, use our ALC Micro Long Reach Ball Series.

Precision Deep Cavity 3D Applications for GM Micro Long Reach Ball Nose

Deep Micro Mold 3D Cavities

Deep 3D contouring of micro mold cavities, inserts, and cores in pre-hardened steels. Extended flute length reaches deep 3D features impossible with standard tools.

Medical Device Deep 3D Features

Deep 3D profiling of surgical instruments, implant components, and diagnostic device parts in stainless steel. ±0.005mm precision meets strict medical tolerances.

Precision Steel 3D Parts

Deep 3D profiling, pocketing, and contouring in alloy steels and tool steels. 2-flute ball design ensures chip evacuation in complex 3D deep cavity features.

Micro Deep Cavity 3D Ball Machining Parameters & Best Practices

Recommended Deep Cavity 3D Parameters (Steel ≤40HRC)
  • ✅ R0.15-R0.25mm tools: Vc=15-25 m/min, fz=0.003-0.006 mm/tooth, Stepover ≤3% D
  • ✅ R0.3-R0.35mm tools: Vc=20-30 m/min, fz=0.005-0.008 mm/tooth, Stepover ≤5% D
  • ✅ R0.4-R0.45mm tools: Vc=25-35 m/min, fz=0.006-0.01 mm/tooth, Stepover ≤8% D
  • ✅ Use peck drilling strategy for deep cavities - retract periodically for chip evacuation
Critical Deep Cavity 3D Machining Tips
  • ⚠️ Use precision collets (ER11/ER16) with <0.003mm runout
  • ⚠️ Tilt ball tool 5-15° to avoid zero cutting speed at ball center during deep 3D paths
  • ⚠️ Climb milling only - reduces cutting forces and prevents deflection in deep 3D cavities
  • ⚠️ Use compressed air or mist for 3D chip evacuation - flood coolant may cause chip packing
  • ⚠️ Reduce feed rates by 30-40% for flute lengths >5× diameter to maintain 3D toolpath rigidity

Factory Production & Quality Control

Micro long reach carbide ball nose grinding and quality inspection line

Manufacturing Process & QA Steps

  • 🔹 Substrate: Ultra-fine grain carbide optimized for micro long reach ball rigidity and TiSiN coating adhesion
  • 🔹 Long Reach Ball Grinding: 5-axis CNC micro ball grinding maintains radius accuracy ±0.005mm and extended flute quality
  • 🔹 TiSiN Coating: PVD coating applied for heat resistance and wear resistance in deep cavity steel 3D machining
  • 🔹 Inspection: 100% inspection under microscope. Radius, runout, and coating thickness verified
  • 🔹 Packaging: Individual protective tubes with anti-static packaging for micro long reach ball tool protection

Frequently Asked Questions

GM Series micro long reach ball nose end mills are available from R0.15mm (D0.3mm) to R0.45mm (D0.9mm). The 2-flute design provides optimal chip evacuation for deep cavity steel 3D machining.

Yes. GM Series micro long reach ball nose end mills with TiSiN coating are specifically designed for stainless steel, alloy steel and pre-hardened steels up to 38HRC for precision deep cavity 3D contouring.

For micro long reach ball nose steel machining: Use Vc=15-35 m/min, fz=0.003-0.01 mm/tooth, stepover 3-8% of diameter. Maintain rigid setup with runout <0.003mm. Use tilt angle 5-15° and climb milling.

Use precision collets with <0.003mm runout, minimize tool overhang (≤3× diameter), tilt ball tool 5-15° to avoid zero cutting speed at center, use conservative stepover (3-8% D), operate at recommended RPM/feed rates, ensure rigid machine setup, and use peck drilling strategy for deep cavities.

Request Quote for GM Series Micro Long Reach Carbide Ball End Mill

Specify your diameter range, material, and monthly volume. We respond with pricing, stock status within 24 hours.

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