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Sutton R109 Adjustable Reamer Set (16 Piece with Pilots (M-A to H))
Machining Tool by Sutton Tools
$5,272.87
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Sutton R109 Adjustable Reamer Set - Reamer Only (11 Piece (M-A4 to M-H))
Machining Tool by Sutton Tools
$3,614.24
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Sutton R109 Adjustable Reamer Set - Reamer Only (9 Piece (M-A to M-I))
Machining Tool by Sutton Tools
$3,326.04
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Buy Long Drill Bits Online in Australia
Long Drill Bits
AIMS Industrial sells long series and extra-long drill bits for deep-hole drilling in metal, timber and composite materials where standard jobber-length drills cannot reach. Our range from Sutton Tools and Bordo covers diameters from 2 mm to 25 mm in HSS and HSS-Co for through-hole and extended-depth applications.
Long Drill Bit Types
- Long series (taper shank): Extended-length HSS drills with Morse taper shanks for deep-hole work in drill presses and radial arm drills — available in MT1 to MT4.
- Extra-long jobber drills: Straight-shank long drills in 150–300 mm OAL for through-holes in structural sections, plates and long components in standard chucks.
- Aircraft extension drills: Narrow-diameter (3–6 mm) drills in 150–300 mm OAL for reaching fastener locations in aircraft and automotive structural assemblies.
- Masonry long drills: Extended SDS-plus and round shank carbide-tip masonry bits for drilling through thick concrete walls, columns and posts.
- Wood auger extensions: Long-shank auger bits for boring holes through multiple wall and floor members from a single access point in building construction.
Application and Technique
- Chip clearance: Retract the drill frequently to clear chips from deep holes — chip packing in long holes causes sudden torque spikes and bit breakage.
- Cutting speed: Reduce spindle speed by 25–30% for long drills compared to standard jobber length — deflection and whip increase with flute length.
- Coolant: Apply through-tool or flood coolant for deep-hole drilling in steel — heat build-up in long flutes is the primary cause of premature failure.
- Pilot drilling: Pre-drill with a short drill to the diameter of the long drill's web — pilot holes reduce deflection and improve entry accuracy in long drills.
Australian Business, Local Supply: As a proudly Australian business since 1988, we stock locally and work with trusted local Australian manufacturers and distributors to ensure fast, reliable supply.
Expert Support: Need help buying the right product for your application? Contact our team for application-specific advice or request a quote.
Also see our Hand Tools and Power Tool Accessories for complementary products.