Multifunctional Core Drill UR21

D SERIES Dry Diamond UR21-D

Rotation

  • ■Capable of drilling reinforced concrete(cutting up to triple-reinforcement), blocks, mortar etc. without the use of water.
  • ■Center pin type cuts using only rotation force, greatly reducing noise and vibration.

◆Applicable Electric Tool: Electric Drill / Percussion Drill (rotating mode)

*For porcelain ceramic tile and stone, water should be used.

D SERIES Dry Diamond UR21-D
D SERIES Dry Diamond UR21-D

Uses

REINFORCED CONCRETE•HARD EXTERIOR PANEL•Resin-based ARTIFICIAL MARBLE•MORTAR•
SOFT EXTERIOR PANEL•BLOCK•BRICK•*CERAMIC TILE

Precautions on use

  • ■Note that the cutting edge may experience wear sooner when used for concrete without the elapse of an insufficient curing period.
  • ■Make sure to use the drill in the “rotation mode.” Using the drill in the percussion/impact mode may cause reakins of the cutting edge or other failures.
  • ■Note that forced insertion/removal operations during drilling (the cutting edge collides against the hole bottom or hole wall) or excessive tilting of a tool may also cause failures.
  • ■Make sure to use this product in a “dry” condition. Using it in a wet or a damp condition may cause not only a shorter life but also reduced operating efficiency.

■Handling Method (Dry Diamond UR-D/DL [common])

Handling Method (Dry Diamond UR-D/DL [common])

  1. Align the center pin with the drilling position. Hold it tight and turn on the motor switch. [Rotation mode]
  2. Stop the motor when the cutting edge is inserted approximately 5 mm and remove the center pin.
  3. Lightly press the body against the drilling groove and continue operation.

■Dressing (sharpening) operation

Perform dressing (sharpening) operation in the following cases:

  • ■Where cutting quality deteriorates during drilling
  • ■Where burns or discoloration is detected on the cutting edge

In dressing operation, perform normal drilling in heavy weight (hollow) blocks or GC/WA grinding wheels. Dressing operation is completed when diamond particles protrude from the cutting edge surface and streaks in the rotation direction become clear.

UR-D (Set)Body + Center Pn + Shank Assembly
Code Diameter
(mm)
Effective
Length
(mm)
Center Pin
(code)
JAN Code
ST-Shank SDS-Shank ST SDS
UR21-D025ST UR21-D025SD 25 170 URCP-230 4989270262010 4989270263017
UR21-D029ST UR21-D029SD 29 4989270262027 4989270263024
UR21-D032ST UR21-D032SD 32 4989270262034 4989270263031
UR21-D035ST UR21-D035SD 35 4989270262041 4989270263048
UR21-D038ST UR21-D038SD 38 4989270262058 4989270263055
UR21-D040ST UR21-D040SD 40 4989270262065 4989270263062
UR21-D045ST UR21-D045SD 45 4989270262072 4989270263079
UR21-D050ST UR21-D050SD 50 4989270262089 4989270263086
UR21-D055ST UR21-D055SD 55 4989270262096 4989270263093
 
UR21-D060ST UR21-D060SD 60 130 DBP-No.1 4989270262102 4989270263109
UR21-D065ST UR21-D065SD 65 4989270262119 4989270263116
UR21-D070ST UR21-D070SD 70 4989270262126 4989270263123
UR21-D075ST UR21-D075SD 75 4989270262133 4989270263130
UR21-D080ST UR21-D080SD 80 4989270262140 4989270263147
UR21-D090ST UR21-D090SD 90 4989270262157 4989270263154
UR21-D095ST UR21-D095SD 95 4989270262164 4989270263161
UR21-D100ST UR21-D100SD 100 4989270262171 4989270263178
UR21-D105ST UR21-D105SD 105 4989270262188 4989270263185
UR21-D110ST UR21-D110SD 110 4989270262195 4989270263192
UR21-D120ST UR21-D120SD 120 4989270262201 4989270263208
UR21-D130ST UR21-D130SD 130 4989270262218 4989270263215
UR21-D160ST UR21-D160SD 160 4989270262225 4989270263222
UR21-D170ST UR21-D170SD 170 4989270262232 4989270263239
Diameter 25-55mm

Diameter 25-55mm

All replacement blades and all sizes (diameter: 25 - 55 mm) are available for one type shank assembly.

*With guide plate

Diameter 60-170mm

Diameter 60-120mm

All replacement blades and all sizes (diameter: 60 - 170 mm) are available for one type shank assembly.

UR-D (Body)
Code Diameter
(mm)
JAN Code
UR21-D025B 25 4989270267015
UR21-D029B 29 4989270267022
UR21-D032B 32 4989270267039
UR21-D035B 35 4989270267046
UR21-D038B 38 4989270267053
UR21-D040B 40 4989270267060
UR21-D045B 45 4989270267077
UR21-D050B 50 4989270267084
UR21-D055B 55 4989270267091
 
UR21-D060B 60 4989270267107
UR21-D065B 65 4989270267114
UR21-D070B 70 4989270267121
UR21-D075B 75 4989270267138
UR21-D080B 80 4989270267145
UR21-D090B 90 4989270267152
UR21-D095B 95 4989270267169
UR21-D100B 100 4989270267176
UR21-D105B 105 4989270267183
UR21-D110B 110 4989270267190
UR21-D120B 120 4989270267206
UR21-D130B 130 4989270267213
UR21-D160B 160 4989270267220
UR21-D170B 170 4989270267237
UR-D (Center Pin)
Code Overall Length
(mm)
Core Drill Size
(mm)
JAN Code
URCP-230 230 25-55 4989270225213
DBP-No.1 187 60-120 4989270220089
UR21 (Shank Assembly)
Code Core Drill Size
(mm)
JAN Code
ST-Shank SDS-Shank ST SDS
UR25/55FST UR25/55FSD 25-55 4989270225312 4989270225510
 
UR60/170FST UR60/170FSD 60-170 4989270225329 4989270225336
UR-D (Standard Accessory) Diameter: 25-55mmPolyethylene
Code Core Drill Size
(mm)
JAN Code Appearance
GP-D25 25 4989270222700
GP-D29 29 4989270222717
GP-D32 32 4989270222724
GP-D35 35 4989270222731
GP-D38 38 4989270222748
GP-D40 40 4989270222755
GP-D45 45 4989270222762
GP-D50 50 4989270222779
GP-D55 55 4989270222786

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