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Combination of this Poly-Clic shank and a cutter allows hole-expanding operations.
- Existing holes can be expanded with ease.
- You have only to prepare the expanding shank to perform hole-expanding operations, because the cutter used to drill existing holes is used as the guide.
- To expand pipe-laying holes when replacing air conditioners.
- To expand pipe-laying holes when replacing pipes in a plant.
- To expand other holes.
| Item |
Part No. |
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Expanding shank S
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PCSKSEXP250 |
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Expanding shank L
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PCSKLEXP250 |
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| Item |
Part No. |
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Expanding plate S
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PCEXPS |
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Expanding plate L
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PCEXPL |
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Expanding bar
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PCSLB250 |
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If you have an expanding shank S and additionally purchase an expanding plate L, you can replace the plate S with the plate L and use the tool as an expanding shank L. (Likewise, your expanding shank L can be used as an expanding
shank S.) |
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The tables below serve as a guide for using an expanding cutter of the same type as the cutter used to drill existing holes. |
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Use this method to make a o 70mm (2-3/4") hole from a o 65mm (2-9/16") hole. |
Wooding core bits, ALC core bits
Cutter's nominal diameter
(Existing-hole diameter) |
Expanding cutter's nominal diameter
(Target diameter) |
| 22mm (7/8") |
N/A |
| 25mm (1") |
32mm to 220mm (1-1/4" to 8-21/32") |
| 29mm (1-1/8") |
35mm to 220mm (1-3/8" to 8-21/32") |
| 32mm (1-1/4") |
38mm to 220mm (1-1/2" to 8-21/32") |
| 35mm (1-3/8") |
45mm to 220mm (1-3/4" to 8-21/32") |
| 38mm (1-1/2") |
| 45mm (1-3/4") |
50mm to 220mm (2" to 8-21/32") |
| 50mm to 220mm (2" to 8-21/32") |
Existing-hole diameter plus
5mm (3/16") or larger |
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Rotary core bits (H core), Percussion core bits (S core)
Cutter's nominal diameter
(Existing-hole diameter) |
Expanding cutter's nominal diameter
(Target diameter) |
| 22mm (7/8") |
N/A |
| 25mm (1") |
32mm to 220mm (1-1/4" to 8-21/32") |
| 29mm (1-1/8") |
35mm to 220mm (1-3/8" to 8-21/32") |
| 32mm (1-1/4") |
38mm to 220mm (1-1/2" to 8-21/32") |
| 35mm (1-3/8") |
45mm to 220mm (1-3/4" to 8-21/32") |
| 38mm (1-1/2") |
| 45mm (1-3/4") |
50mm to 220mm (2" to 8-21/32") |
| 50mm to 220mm (2" to 8-21/32") |
Existing-hole diameter plus
10mm (3/8") or larger |
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The maximum cutter size of the Rotary core bit is 170mm (6-11/16"). |
Drimond core bits, Drimond core bits for block, Hyperdia core bits
Cutter's nominal diameter
(Existing-hole diameter) |
Expanding cutter's nominal diameter
(Target diameter) |
| 25mm (1") |
35mm to 220mm (1-3/8" to 8-21/32")
(Up to 310mm (12-13/64")
for the Hyperdia core bits) |
| 29mm (1-1/8") |
38mm to 220mm (1-1/2" to 8-21/32")
(Up to 310mm (12-13/64")
for the Hyperdia core bits) |
| 32mm (1-1/4") |
45mm to 220mm (1-3/4" to 8-21/32")
(Up to 310mm (12-13/64")
for the Hyperdia core bits) |
| 35mm (1-3/8") |
| 38mm (1-1/2") |
50mm to 220mm (2" to 8-21/32")
(Up to 310mm (12-13/64")
for the Hyperdia core bits) |
| 45mm (1-3/4") |
55mm to 220mm (2-1/8" to 8-21/32")
(Up to 310mm (12-13/64")
for the Hyperdia core bits) |
50mm to 220mm (2" to 8-21/32")
(Up to 310mm (12-13/64")
for the Hyperdia core bits) |
Existing-hole diameter plus
10mm (3/8") or larger |
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- In the hole-expanding operation, remove the guide cutter immediately after hole starting.
- Some holes drilled with other manufacturers' cutters cannot be expanded.
- When expanding the holes drilled with other manufacturers' cutters, "vibrations" and "chatters" may be produced due to a difference in diameter between the hole and guide cutter.
- This product cannot be used for electric drills having a safety clutch.
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