site map

Product Information

Geotest Home

Customer Service


Geotest Catalog
Request Catalog



Contact Geotest


C-3520-C-3591 Core Drilling Accessories and Diamond Drill Bits

Core Drilling Accessories

Hand pressured 4 gallon (15 liter) water tank 牋牋 C-3520
Water Saver (electric pump with trap ring) C-3521
Extension Rod 9" (229 mm) C-3522
Chuck Wrench for drill bit drive shaft C-3524
Strap Wrench 18" C-3525
Bit Dresser C-3526
Replacement Dresser Wheel C-3526W
Core Retrieval Tongs for 4" cores C-3528
Core Retrieval Tongs for 6" cores C-3529

Thin Wall Diamond Coring Bits

These are the best quality American made bits now available. They are available with solid back (slightly less expensive) and open ended. For high production, the core can be ejected quicker from the open ended style which requires use of an expander set. Expander set is designed for quick, easy attachment of 2 to 6.5" (51 to 165mm) dia. bits. Two beveled plates tighten expander ring firmly against inside of bit barrel. The expander ring attaches to core drill. Solid back bits are now frequently specified due to ease of use although it is slightly more difficult to push core out through the segmented (teeth) part. Listing here is for open ended bits. For solid back bits which thread directly to core drill, add an "S" to catalog number.

All Geotest thin wall bits offered here are segmented type which permits resegmentation (resetting). These are heavier wall than non-segmented bits which are not resettable. Standard core length is 13" (330mm). Longer lengths are available to special order. Larger diameters than the common sizes listed are also available. Custom drill bits can be designed. The following grades are offered:

Utility grade gives a long life due to high diamond content, has a low initial cost and is excellent for general purpose fast drilling.

Premium grade is the most versatile that we offer.It has a higher diamond content than Utility and intended for fast cutting and clean holes in concrete and gives lowest overall drilling costs.

Asphalt grade is very similar and identical in price to Premium grade. It is configured specifically to give optimum performance if bulk of work is taking asphalt cores. Specify by adding an "A" to end of catalog number of Premium grade size required.

Professional grade will give fastest possible penetration speed, longest bit life for hard concrete and heavy steel drilling. It has highest diamond concentration.

Thin Wall Diamond Drill Bits

Hole Size
牋inch (mm)
Utility Premium Asphalt Pro Expander Set
牋2 (50.8) C-3540牋牋 C-3560牋牋 C-3560A牋牋 C-3580牋牋 C-3560E
牋2.5 (63.5) C-3541 C-3561 C-3561A C-3581 C-3561E
牋3 (76.2) C-3542 C-3562 C-3562A C-3582 C-3562E
牋3.5(88.9) C-3543 C-3563 C-3563A C-3583 C-3563E
牋4 (101.8) C-3544 C-3564 C-3564A C-3584 C-3564E
* 4.25(108) C-3545 C-3565 C-3565A C-3585 C-3565E
牋4.5 (114.3) C-3546 C-3566 C-3566A C-3586 C-3566E
牋5 (127) C-3547 C-3567 C-3567A C-3587 C-3567E
牋5.5(139.7) C-3548 C-3568 C-3568A C-3588 C-3568E
牋6 (152.4) C-3549 C-3569 C-3569A C-3589 C-3569E
* 6.25 (158.8)牋 C-3550 C-3570 C-3570A C-3590 C-3570E
牋6.5 (165.1) C-3551 C-3571 C-3571A C-3591 C-3571E
*These are sizes frequently specified for 4" (102mm) and 6" (152mm) cores.

Corecase, a system for drilling cores up to 106mm in generally inaccessible locations is available. Request information.

Related Items:

This item is part of the following categories:

Other items in the core drilling category include:

C-3512 Kor-Mobiles
C-3499 Portable Core Drilling Machine, hand held gasoline
C-3500 Portable Core Drilling Machine, gasoline
C-3505 Portable Core Drilling Machine, electric
C-3520-C-3591 Core Drilling Accessories and Diamond Drill Bits

Other items in the concrete category include:

C-1352-C-1366 Compression Machine Accessories
C-0130 Digital Compression Tester,
675,000 lb (3000kN) Capacity
C-0110 Digital Compression Tester,
350,000 lb (1556kN) Capacity
C-0050 Cybertronic Digital Readout
C-2540G Concrete Vibrator, gas operated
C-2530 Pocket Tachometer
C-1300 Dual Frame Concrete Testing System 500,000 lb
C-0070 Hydraulic Pump
B1600 Asphalt/Concrete Mobile Mixers with 8创 wheels
B1605 Asphalt/Concrete Stationary Mixer 5 gallon
B1600/5access Asphalt/Concrete Mixer Accessories
C-0300 Compression Testers for Low Resistance Materials
C-0200 Flexure Tester 33,700 lb (150kN) Digital
C-0100S Automatic Servo Controlled Compression Testers
C-0140 Digital Hi Cap Compression,
1,125,000 lb (5000kN)
C-2220 Single Use Cylinder Molds-Plastic
C-2230 Single Use Cylinder Molds-Cardboard
C-2200 Reusable Cylinder Molds-Steel
C-2206 Reusable Cylinder Molds-Plastic
C-2210 3-Gang 2x4创 Mold
C-2226 Mold Stripper
C-1280 Universal Tensile/Compression Machine
C-1299 Plotter for use with C-1298
C-0120HS High Stability Compression Testers
C-1260 Printer
C-1295 Compression Accessories
C-1298 Extensometer 2创 (50mm)
C-1710 Portable Beam Tester
C-2330 Cylinder Carrier
C-2348 Capping Ladle
C-2320 Cylinder Cappers
C-2352 High Strength Capping Compound
C-2334 Capping Set for 6创 Cylinders
C-2300 Concrete Air Indicator
C-2301 Concrete Air Indicator Kit
C-2305 Roll-A-Meter
C-2305A Aluminum Roll-A-Meter
C-2304 Volumetair
C-2306 Pressure Meter
C-2311 Air Meter Calibrator, plastic
C-2312 Air Meter Calibrator, machined brass
C-2360 Slump Sets
C-2365 Concrete Workability Meter (CWM)
C-2355 Kelly Ball Apparatus
C-1820 Lightweight Test Hammer
C-1805 Calibration Anvil
C-1860 Rebar Locater (Metal Detector)
C-1927 Portable AC/DC Oscilloscope
C-1031A Concrete Compression Machine, 700,000 lb (3114kN) capacity
C-2000 Rapid Freeze-Thaw Apparatus
C-2003 Freeze-Thaw Specimen Molds
C-2010 Sonometer with Oscilloscope
Resonance Frequency Tester
C-0100 Digital Compression Tester,
300,000 lb (1233kN) Capacity
C-3050 Concrete Corrosion Mapping System
C-1930.1 Thermocouple Wire
C-3100 Permeability Tester
C-3120 Rapid Chloride Test Set
C-3130 Rapid Alkali Test Set
C-1720 Compressometer
S2520 PI Tape, concrete
C-1722 Compressometer-Extensometer
C-3200 Multi-Position Strain Gauge Sets
C-2380 Curing Tank Heater
C-2382 Curing Tank Circulator
C-2410 Concrete Curing Box
C-2415 Deluxe Portable Curing Box
C-2722-C-2739 Masonry Saw Accessories and Blades
C-2510 Hand Tow Concrete Mixer
C-2511 Vehicle Tow Concrete Mixer
C-2525 Vibrating Table 20x20创
C-2540 Concrete Vibrator
C-2550 Unit Weight Measures (Yield Buckets), steel
C-2560 Unit Weight Measures (Yield Buckets), aluminum
C-2580 Initial Set Penetrometer
C-2582 Acme Penetrometer
C-2583 Mortar Penetrometer
C-2710 Heavy Duty Masonry Saw
C-2715/16 Holding Attachments (for Masonry Saws)

C-3499 Portable Core Drilling Machine, hand held gasoline
C-3500 Portable Core Drilling Machine, gasoline
C-3505 Portable Core Drilling Machine, electric
C-3520-C-3591 Core Drilling Accessories and Diamond Drill Bits
C-3602 Instant Moisture and Temperature Testers
C-3610 Concrete Moisture Encounter
C-3630 Moisture Encounter: Wood, Felt-Roofing, Dry Wall, Plaster, Brick
C-3640 Wood-Encounter
C-3645 Compact Moisture Meter for Wood
C-3650 Professional Wood Moisture Meter
C-3651-C-3655 Probe Meter Accessories for C-3645 and C-3650
C-3700 Hand Penetrometer
C-3760 Crackcase
C-4050 Digital Fault Meter
C-1940 Crack Width Gauge Monitors
C-6000 Traveling Beam Device
C-6000access Traveling Beam Accessories
C-6030 Pavement Profilograph Mechanical Recording
C-6040 Pavement Profilograph Computerized
C-7200 4-Cell Concrete Permeability
C-7220 2-Cell Large Permeability Apparatus
C-7600 Temperature Matched Curing System
C-7201 Sealing Devices
C-7215 Epoxy Resin, 5kg can
C-6500 Concrete Floor Tester
C-7501 Concrete and Non-metalic Coating Thickness Gages
C-7510 Mechanical Thickness Gages for Steel Coatings
C-2257 Beam Curing Cover
C-2239 Beam (Plastic) and Large Cube Molds
C-2240-C-2249 Beam (Steel) and Large Cube Molds
C-2224 Cylinder Wrap
C-2308 Type A Pressure Meter
C-3512 Kor-Mobiles
U-1031AC Digital Concrete Field Scale
U-1031A Digital Concrete Field Scale
C-2340 Compound Melting Pots
C-4020 Printer
C-4016 Software
C-4001-C-4010 Calibration Load Cell
C-0120 Concrete Compression Tester,
440,000 lb (2000kN) Capacity
C-0400 Digital Two Piston Low Capacity Compression/Flexure Tester
C-2541 Concrete Vibrator, larger head
C-05access Compression Machine Accessories including Software
C-0500 Mounting Stand
C-0510 Spacers
C-0520 Block Test Platen Set
C-0530 Universal Flexure Test Set
C-0540 Cube Test Apparatus
C-0550 Splitting Tensile Test Device
C-0560 Clay Block Flexure Device
C-2472 Humidifiers for Moist Rooms
C-0565 Flexure Device for Prisms, 40x40x160mm
C-0800 Concrete Compression Test Software
C-2461 Curing Room
C-6050 High-Low Detectors (Rolling Straight Edge)
C-3750 Crack Detection Microscope
C-2358 Slump Cone Test
C-2480 Turbo Oscillator
C-2369 Curing Tanks
C-1910 Windsor Pin System
C-1899 Windsor Probe System
C-0080 Concrete Compression Machine, Digital
C-1925A Pro Model Ultrasonic Tester
C-1800 Concrete Test Hammer
C-1810A Digital Concrete Test Hammer
C-4015 Universal Digital Display
C-4001 Calibration Load Cell System
C-1450 Concrete End Grinder
C-1946 Crack Width Automatic Measuring Apparatus
C-1942 Large Crack Monitoring, Digital System
C-2471B Humidifier 3 gallons/hour
C-1986 Concrete Thickness Gauge
C-1960 Crack Width Gauge
C-1962 Crack Depth Gauge
C-2465 Moist Room Controller
C-0101 Concrete Compression Machine, 275,000 lb (1225kN), all automatic
C-0102 Concrete Compression Machine, 350,000 lb (1556kN), all automatic
C-0100A Concrete Compression Machine, 280,000 lb (1230kN), all automatic

Back to search page



[ Geotest Home | Customer Service | Documentation |
Geotest Catalog | Calendar | Contact Geotest ]
Geotest Instrument Corporation
241 S. Frontage Road., Suite 38
Burr Ridge,IL 60527 USA