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PM Series Micro Long Reach Ball Nose End Mill

Ultra-precision R0.15-R0.45mm micro long reach ball nose end mills with AlTiCrN composite coating for deep cavity hardened steel 3D contouring. Extended flute length (2-10mm) enables deep pocket milling in hardened steels ≤55HRC. 2-flute design ensures optimal chip evacuation in deep 3D profiles.

R0.15mm - R0.45mm Radius 2-Flute Long Reach Ball AlTiCrN Coated Extended Flute 2-10mm ≤55 HRC Deep Cavity Hardened Steel 3D
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PM Series Micro Long Reach Ball Nose End Mill
PM Series Micro Long Reach Ball Nose 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 PM Micro Long Reach Ball Nose for Deep Cavity Hardened Steel 3D Machining?

AlTiCrN Extreme Heat Resistance

AlTiCrN composite coating withstands extreme friction heat generated during deep cavity 3D contouring of hardened steels. Prevents thermal softening and maintains cutting edge integrity in micro long reach applications.

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, die inserts, and deep pockets in hardened steel components.

Optimized Micro Ball Rigidity

Reinforced core diameter maximizes torsional rigidity at extended lengths. Reduces chatter and deflection during deep 3D ball nose machining, ensuring consistent radius accuracy and surface finish.

Efficient Hard Material Chip Flow

2-flute gullet geometry provides maximum chip evacuation space in deep cavities. Prevents chip recutting and packing when machining gummy hardened alloys and stainless steels.

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

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

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

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 Hardened Steel Machining

Workpiece MaterialSuitabilityDeep 3D Machining Notes
Hardened Steel (45-55HRC)◎ ExcellentAlTiCrN coating prevents rapid wear in 3D contours. Use low speeds (15-30 m/min) with flood coolant
Tool Steel (SKD11, SKD61)◎ ExcellentExcellent for deep cavity die/mold 3D features. Maintain constant stepover in 3D toolpaths
Pre-hardened Steel (38-45HRC)◎ ExcellentUse conservative parameters for deep 3D profiling. AlTiCrN provides extreme heat resistance
Stainless Steel (304, 316)◎ ExcellentIdeal for deep micro 3D contours. Use climb milling and constant Z stepover
Alloy Steel (42CrMo, S45C)◎ ExcellentGood machinability for 3D features. Can use higher feeds than hardened steel
Aluminum / Copper✗ Not RecommendedUse ALC Series for non-ferrous 3D. PM Series optimized for hardened steel

◎ = Excellent for Micro Deep Cavity 3D Hardened Steel | ✗ = Not Recommended | PM Micro Long Reach Ball Series is optimized for hardened steel ≤55HRC. For aluminum or copper micro 3D machining, use our ALC Micro Long Reach Ball Series.

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

Deep Hardened Mold 3D Cavities

Deep 3D contouring of micro mold cavities, inserts, and cores in 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 hardened stainless steel. ±0.005mm precision meets strict medical tolerances.

Precision Hard 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 (Hardened Steel ≤55HRC)
  • ✅ 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 AlTiCrN coating adhesion
  • 🔹 Long Reach Ball Grinding: 5-axis CNC micro ball grinding maintains radius accuracy ±0.005mm and extended flute quality
  • 🔹 AlTiCrN Coating: Composite coating applied for extreme heat resistance and wear resistance in deep cavity hardened 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

PM 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 hardened steel 3D machining.

Yes. PM Series micro long reach ball nose end mills with AlTiCrN composite coating are specifically designed for hardened steel, dies, and inserts up to 55HRC for precision deep cavity 3D contouring.

For micro long reach ball nose hardened 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="">

Use precision collets with<0.003mm runout="">

Request Quote for PM Series Micro Long Reach Ball Nose End Mill

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

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