A complete line of drill bits and drill steel ensure E-Z Drill will always have what you need to get the job done. One-piece whirl bits, 2-piece H-thread steel and bits, and 2-piece tapered steel and bits all come in numerous sizes to meet almost any need.
Drilling Speeds
Outlined below are drilling times compiled from actual job sites. Drilling speed and production is affected by several factors including: (1) type of aggregate, (2) age of concrete, (3) bit sharpness and type, and (4) amount of steel encountered. The drilling times provided are using a Model 210 series with the CP 32A rock drill.
| Bit Diameter |
Drill Depth |
Time |
Location |
| 5/8" (15.9 mm) |
16" (40.6 cm) |
18 – 20 seconds |
Texas |
| 3/4" (19.1 mm) |
12" (30.5 cm) |
25 – 28 seconds |
Texas |
| 3/4" (19.1 mm) |
6" (15.2 cm) |
14 - 16 seconds |
Michigan |
| 7/8" (22.2 mm) |
9" (22.9 cm) |
14 -16 seconds |
Texas |
| 1" (25.4 mm) |
9" (22.9 cm) |
18 – 20 seconds |
Florida |
| 1 1/8" (28.6 mm) |
10" (25.4 cm) |
21 – 23 seconds |
Oklahoma |
| 1 1/4" (31.8 mm) |
9 1/2" (24.1 cm) |
30 – 33 seconds |
Pennsylvania |
| 1 3/8" (34.9 mm) |
9 1/2 " (24.1 cm) |
21 – 24 seconds |
Pennsylvania |
| 1 3/8" (34.9 mm) |
10" (25.4 cm) |
24 – 26 seconds |
Arkansas |
| 1 3/8" (34.9 mm) |
10" (25.4 cm) |
18 – 20 seconds |
Kansas |
| 1 3/8" (34.9 mm) |
10" (25.4 cm) |
25 - 27 seconds |
California |
| 1 3/8" (34.9 mm) |
10" (25.4 cm) |
20 – 22 seconds |
Indiana |
| 1 1/2" (38.1 mm) |
9" (22.9 cm) |
28 – 30 seconds |
Illinois |
| 1 5/8" (41.3 mm) |
15" (38.1 cm) |
48 – 52 seconds |
Georgia |
| 1 5/8" (41.3 mm) |
9" (22.9 cm) |
24 – 26 seconds |
Oklahoma |
| 1 3/4" (44.5 mm) |
10" (25.4 cm) |
33 – 35 seconds |
Arizona |