High Speed Masonry Core Drills & Accessories

  • Product Code: HSM Cores
  • Availability: In Stock
$0.00 Ex Tax: $0.00

A rapid action core drill ideally matched to SDS Plus Machines 

  • Unique Armeg original design ball-locking & pilot drill system eliminates the need for awkward grub screws, meaning pilots and arbors can be interchanged quickly for greater convenience
  • Precision machined arbor flats allow users to easily use grips or a spanner to lock on to the arbor for easy separation of core assembly
  • Machined Tommy Bar hole allows users to locate a Tommy Bar for hassle free disconnection of arbor and core drills
  • 2.5mm ultra thin wall means there is dramatically reduced drag resulting in extreme drilling speeds
  • Ultra hard tungsten carbide tips provide increased wear resistance allowing users to operate the core on 'hammer action' for rapid drilling speeds
  • Made in Sheffield

High Speed Masonry Cores can be used in:

  • Heavy duty concrete 
  • General concrete
  • Hard bricks
  • Soft bricks
  • Lightweight blocks
  • Natural stone
  • Constructional granite
  • Limestone



HSM - High Speed Masonry Core Drills

Diameter Size mm Overall Length mm Working Length mm Part Number  
25 85 60 CL25S
30 85 60 CL30S
40 85 60 CL40S
45 85 60 CL45S
50 85 60 CL50S
66 85 60 CL66S
80 85 60 CL80S


HSM - High Speed Masony Core Drill Accessories 

Description Shank Type Thread Type Working Length mm Part Number  
7 mm HSM Pilot Drill Ball retention groove - 100 CLPDS  
200mm HSM Tommy Bar n/a  - 200 CLTB
100mm SDS Plus Arbor HSM Cores SDS Plus M16 x 2.0 100 DL100B4S
300mm SDS Plus Arbor HSM Cores SDS Plus M16 x 2.0 300 DL300B4S
100 Hex Arbor HSM Cores 10mm Hexagon M16 x 2.0 100 DL100X13S
300mm Hex Arbor HSM Cores 10mm Hexagon M16 x 2.0 300 DL300X13S


Connection Diagram



  • When cleanliness of breakout is critical, turn off hammer action and use 'rotary only' mode for the last part of the drilling process 

Recommended Speed

  • Recommended speed for these cores is largely governed by the power tool itself. This is because they are designed to be used in power tools where in the majority of cases there is no facility to regulate the speed (SDS Plus, SDS Max machines etc.).
  • If used in a machine where speed regulation is possible, a general recommendation is the larger diameter of the core drill being used, the slower the speed. 

Material Chart


Machine Recommendations

Tags: CL25S, CL30S, CL40S, CL45S, CL50S, CL66S, CL80S, CLPDS, CLTB, DL300B4S, DL100B4S, DL100X13S, DL300B4S, Concrete, Bricks, Block, Natural Stone, Granite, Limestone, Waste Pipes, Water Feed Pipes, Cable Entry / Exit, Flue Passage, Extractor Fans, Exhausts, Dust Extraction, Core, Coring, Core Drilling, Tungsten Carbide Tip


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