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.

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Details

Size table

Item	Part No.
Expanding shank S	PCSKSEXP250
Expanding shank L	PCSKLEXP250

Optional parts

Item	Part No.
Expanding plate S	PCEXPS
Expanding plate L	PCEXPL
Expanding bar	PCSLB250

* 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.)

Core bit-specific correspondence table

*The tables below serve as a guide for using an expanding cutter of the same type as the cutter used to drill existing holes.

*Use this method to make a ø 70mm (2-3/4") hole from a ø 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 to 220mm (1-3/4" to 8-21/32")
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

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 to 220mm (1-3/4" to 8-21/32")
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

*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

Additional Information

Manufacturer: Miyanaga Co. Ltd.

For More Information on the Expanding shanks, [Click Here] to Link to Manufacturer Web Site

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