GEN2 T-A Insert
Ring Gears: GEN2 T-A 
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The Challenge

The customer is machining wind energy ring gears made from 8620 using a Mazak Integrex 1550V-II with 800 PSI (55 bar) of water soluble coolant.

When the customer changed the size of the part, the 880 Drill could not achieve the extra depth required to complete the job. The new required depth of the hole was 14.4” (336 mm).

The GEN2 T-A met the customer’s goals.

Product: GEN2 T-A
Objective: Achieve depth requirements
Industry: Renewable energy/wind
Part: Ring gears
Material: 8620 steel
Hole Ø: 1.3" (33.02mm)
Hole Depth: 13.15" (334.01mm)

The Solution
The GEN2 T-A drilling system
  • Holder: 24025S-125F
  • Insert: Special T-A GEN2 Insert
Measure Competitor GEN2 T-A
RPM 984 472
Feed Rate 0.004 IPR (0.102 mm/rev) 0.012 IPR (0.305 mm/rev)
Penetration Rate 3.94 IPM (100.076 mm/min) 5.66 IPM (143.764 mm/min)
Cycle Time 1 min 51 sec 1 min 16 sec
Tool Life 22 holes 44 holes

The Advantages
The GEN2 T-A drilling system provided:
  • Double the tool life
  • Decreased cycle time
  • Achieved depth requirements