Screw-On Tool Heads & Modular Extensions
Dapra's Carbide Core Modular Extensions Are Ideal for Standard Inch End Mill Holders
- Cylindrical inch shanks, providing adaptation for end mill holders, milling chucks and heat-shrink holders
- 3 sizes to accommodate modular head sizes from 3/4" to 1-1/2"
- Carbide core for enhanced vibration dampening capability; reduced deflection and improved rigidity
- Optional add-on extensions for additional 2" reach – screw on to base extensions (for 3/4" to 1-1/2" modular heads)
- Thru-coolant for delivery of air or coolant right at the cutting edge
Carbide Core Modular Extensions
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Carbide Core Modular Extensions For Head Dia. Extension Part No. Shank Dia. Effective Length OAL Thread CC A .750"/20mm CC-ME-0750-3500C 1.000" 3.7" 6.0" M10 7/16" x 4.0" .660 1.000"/25mm CC-ME-1000-4500C 1.000" 4.7" 7.0" M12 7/16" x 5.0" .935 1.250"/1.500"/1.500" CC-ME-1250-5500C 1.250" 5.7" 8.0" M16 1/2" x 6.0" 1.175 -
2" Add-On Extensions For Head Dia. Extension Part No. Effective Length Thread .750"/20mm ME-0750-2"C EXTENSION ADAPTER 2.0" M10 1.000"/25mm ME-1000-2"C EXTENSION ADAPTER 2.0" M12 1.250"/1.500" ME-1250-2"C EXTENSION ADAPTER 2.0" M16 
Dapra Modular Heads Screw on to Industry Standard Systems!
Dapra produces a full selection of Ball Nose, Square Shoulder and Toroid screw-on heads. Advantages include:
- Compatibility with ISO standard modular systems
- Greater effective reach than solid end mills
- Close-tolerance mounting minimizes runout
- Standard inch wrench flats – no special metric wrenches needed
Square Shoulder Modular Heads
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Square Shoulder Screw-On Heads Dia. Holder M DOC E Flutes Inserts Open-End Wrench .750" SSEM0750-MOD-R35-2 M10 .350" 1.50" 2 APET1003.. / XPET1003.. 9/16" 1.000" SSEM1000-MOD-R55-2 M12 .550" 1.50" 2 APET1604.. / XPET1604.. 11/16" 1.250" SSEM1250-MOD-R55-3 M16 .550" 1.75" 3 APET1604.. / XPET1604.. 15/16" 1.500" SSEM1500-MOD-R55-3 M16 .550" 1.75" 3 APET1604.. / XPET1604.. 15/16"
Ball Nose Modular Heads
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Ball Nose Screw-On Heads Dia. Holder M E Flutes Wrench .500"/12mm GWR12-MOD M8* 1.05" 2 3/8" .625"/16mm GWR16-MOD M8* 1.11" 2 7/16" .750"/20mm GWR20-MOD M10 1.28" 2 9/16" 1.000"/25mm GWR25-MOD M12 1.65" 2 11/16" 1.250"/32mm GWR32-MOD M16 1.78" 2 15/16" * M8 modular extensions not available. Use ISO standard bars.
Toroid Modular Heads
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Toroid Screw-On Heads "R" Value Dia. Holder M E IC Flutes Wrench Insert R3 .750" TREM075-MOD-R3-2† M10 1.50" .375" 2 9/16" RDCH-32/HFDCH-32 R4‡ 1.000" TREM100-MOD-R4-2‡ M12 1.50" .500" 2 11/16" RDCH-43 R4 1.250" TREM125-MOD-R4-3 M16 1.75" .500" 3 15/16" RDCH-43/HFDCH-43/SXEH-432 R4 1.500" TREM150-MOD-R4-3 M16 1.75" .500" 3 15/16" RDCH-43/HFDCH-43/SXEH-432 R6 1.500" TREM150-MOD-R6-2 M16 1.75" .750" 2 15/16" RXCH-63/OXCH-634 † TREM075-MOD-R3-2 does not come with top clamp.
‡ Uses RDCH-43 Inserts only.
Modular Screw-On Head Extensions
- Made of high-density tungsten, providing extra resistance
- Machined on both ends; can be cut in half and used with two different modular heads
- Metric shank diameter provides clearance for each inch-size modular head
Modular Screw-On Head Extensions
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Modular Extensions Cutting Dia. Extension Part No. Overall Length Shank Diameter .750" ME-0750-18MM-900 9" 18mm 1.000" ME-1000-25MM-1100 11" 25mm 1.250" ME-125/150-25MM-1200 12" 25mm 1.500" ME-125/150-25MM-1200 12" 25mm
Dapra milling products are made in the USA.