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Center Drills Type ‘B’ – 60°
- They are well-suited for centering and creating starting points for drilling in various materials such as steel, stainless steel, cast iron, and other materials like metal alloys, copper, iron, wood, and aluminum.
- Center drills are crucial for creating a precise pilot hole that prevents a standard drill bit from “walking” or deviating from the intended drilling spot.
- They are commonly used before larger drilling operations or when turning workpieces between centers on a lathe.
- The use of a Bell Type center drill, particularly for turning operations, helps to create a secure and stable support point, accommodating the lathe’s live center.
- They also contribute to improved accuracy, reduced drill bit breakage, and better hole quality in machining processes.
| Cat No. | Size | Body Dia. (A) | Drill Dia. (B) | Bell Dia. Length | Overall Length (L) | ||
|---|---|---|---|---|---|---|---|
| GCD-2582 | 11 | 1/8" | 3/64" | .100" | 1-1/4" | ||
| GCD-2583 | 12 | 3/16" | 1/16" | .150" | 1-7/8" | ||
| GCD-2584 | 13 | 1/4" | 3/32" | .200" | 2" | ||
| GCD-2585 | 14 | 5/16" | 7/64" | .250" | 2-1/8" | ||
| GCD-2586 | 15 | 7/16" | 5/32" | .350" | 2-3/4" | ||
| GCD-2587 | 16 | 1/2" | 3/16" | .400" | 3" | ||
| GCD-2588 | 17 | 5/8" | 7/32" | .500" | 3-1/4" | ||
| GCD-2589 | 18 | 3/4" | 1/4" | .600" | 3-1/2" |
| Cat No. | GCD-2582, GCD-2583, GCD-2584, GCD-2585, GCD-2586, GCD-2587, GCD-2588, GCD-2589 |
|---|---|
| Size | 11, 12, 13, 14, 15, 16, 17, 18 |
| Body Dia. (A) | 1/8", 3/16", 1/4", 5/16", 7/16", 1/2", 5/8", 3/4" |
| Drill Dia. (B) | 3/64", 1/16", 3/32", 7/64", 5/32", 3/16", 7/32", 1/4" |
| Bell Dia. Length | .100", .150", .200", .250", .350", .400", .500", .600" |
| Overall Length (L) | 1-1/4", 1-7/8", 2", 2-1/8", 2-3/4", 3", 3-1/4", 3-1/2" |
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