SMD type. SEC-MultiDrills. The Ultimate in Low Cost Drilling

Transcription

1 Tooling News No.E435 The Ultimate in Low Cost ing SEC-s MB Utilizing DEX Coat, a dedicated coating developed for drills, to achieve more than double the tool life of conventional drills Head Different drill edge profiles can be selected based on application heads have regrinding allowance Double the tool life of brazed carbide tip drills type ranges from ø12.~3.8mm,136 items series expansion SEC : Steady and Easy Clamp is the generic code for our indexable tools Stocked Sizes ( Heads) MB Assembly ø12. ~ ø42.mm ø12. ~ ø3.8mm ø24.5 ~ ø26.7mm

2 MB Assembly Front screw clamp design Head design + Special coated carbide Oil holes are directed at cutting lip Radial serration provides steady and precise clamping Specially treated body for high wear and rust resistance Holder n Series Range Head Holder (L/D) Application Range Icon type M type () L type (5D) D type (8D) General ø12.~ø42.5 ø12.~ø42.5 ø13.5~ø42.5 Tool Life and Cost Comparison Tool Life Comparison Cost Comparison Conclusion Number of Workpieces General Features Exchangeable head drills that utilize an unique radial serration design for high precision and strength. Exchangeable drill heads provide easy tool change, higher productivity and cost efficiency, which contribute to easy tool management. Regrinding allowance of 1.5mm to 3.mm makes further tool cost reductions possible Special grade and coating Without regrinding considerations, tool is used until maximum wear permitted. Double the tool life! SEC- type tolerance and tool life are relatively lower after regrinding Brazed Tooling Cost 1% 5% Cost Reduction! Holder SEC- type 1 Heads New New New New New Brazed 4 x regrind 4 x regrind 4 x regrind type M type () L type (5D) D type (8D) B3 type () 4 x regrind For regrinding purpose, brazed drills are used only up to 5~7% of its actual tool life potential. 4 x regrind SEC- type can be used up to 1%! SUS SS FC Structural Workpiece Example ø12.~ø3.8 ø12.~ø3.8 ø13.5~ø3.8 ø24.5~ø26.7 SEC- type offers : Double the tool life of brazed drills! Tool change time is shortened! Hole size : φ18.mm, Depth : 5mm SEC- type Insert : SMDT18 Holder : SMDH18M Work : Machine component (S5C) WET MB ing Precision Strength 18.1 SEC- type Competitor A Competitor B Brazed SEC- type : Normal Wear Durability comparison at maximum feedrate Hole Size After drilling 9 holes (about 34m) Competitor A : Large Wear SEC- type Brazed type drill , Number of Holes After drilling 9 holes (about 34m) Competitor B :Edge Chipping Feedrate at which breakage occurs, f (mm/rev) Work material : S5C ( diameter : φ18.mm) Cutting conditions : Vc=7m/min, f=.25mm/rev Hole depth=38mm (through), WET After drilling 67 holes (about 25m) Work material : S5C diameter : φ16.mm Cutting conditions : Vc=8m/min, Hole depth=38mm Characteristics Of The Next Generation Coating : DEX COAT Sumitomo Electric Hardmetal s next generation drill coating utilizes the latest nano-coating technology to provide more than double the tool life of conventional coatings. Inclusion of Silicon and Chrome greatly improve wear, thermal and adhesion resistance. Newly developed compound super multi-layered structure offers significant improvements to chipping resistance (coating strength). Coating Structure World s first compound coating layer that is made from combining two alternately stacked layers of super multi-layered coatings. TiAlCr based Super multilayered coating SEM Profile TiSi based Super multilayered coating Coating Characteristics Coating Hardness (GPa) 5 4 TiSiN DEX Coat 3 TiAlN TiCN 2 TiN Poor Chipping Resistance Good Drastic Reduction of Rake Face Wear DEX Coat (ACX7) Conventional coating (ACZ7S) Work material : S5C Cutting conditions : Vc=8m/min, f=.25mm/rev Hole depth=38mm, WET Total cutting length : 32.8m 2

3 type X-type Thinning type Overlap-type Thinning DEX Coat Web thinning for excellent centering DEX Coat Large edge treatment Strong peripheral cutting edge Large thinning angle Small edge treatment Suitable for high efficiency drilling of General Specially for hard-to-cut metals such as, Soft, Grey and low rigidity setups Sharp peripheral cutting edge Application Examples ( type) Application Examples ( type) Improved tool life and efficiency Part name Work material size Conditions Hole depth : Housing : S2C : φ15mm x 5D : Vc = 17m/min f =.3mm/rev : 32mm x 12 holes Efficiency Performance Tool Life Tool Life (%) Comparison ing Efficiency (pcs) pcs % 17pcs % SEC- type Competitor s 3.3 times huge tool life improvement Part name Work material size Conditions Hole depth : Support bracket : S45C : φ2mm x : Vc = 98m/min f =.18mm/rev : 17mm Excellent cutting edge design for and Soft. Large thinning angle prevents breakage at the convex R-profile portion, particularly when drilling Soft and it also reduces breakages caused by adhesion when drilling. Improved chipping resistance around the hole openings of Better edge sharpness at the peripheral edge prevents chipping around the hole openings when drilling. Tool Life (pcs) 6, 4, 2, Tool Life Comparison 6,pcs SEC- type 3.3x Tool Life 1,8pcs Competitor s Brazed type (ing length 15m) Competitor (ing length 11m) Chipping at center portion Workpiece image Work : Hub (S55C equivalent) Hole diameter : φ Hole depth : 1mm (through hole) ing position : 4 holes Coolant : Emulsion (external) SEC- type with excellent centering, is able to drill 15m without any edge chipping or visible rifle marks. Competitor s indexable drill exhibited poor centering with visible rifle marks. The drill point chipped after 11m. Work material : SUS34 size : φ14mm x 5D Conditions : Vc = 6m/min, f =.15mm/rev Coolant : Emulsion type Efficiency (%) Performance Comparison 1,6pcs 129% SEC- type Tool Life 2.3x Tool Life 7pcs 1% Competitor s Solid Efficiency Tool Life (pcs) 2, 1,5 1, 5 SEC- type Condition : Vc = 6m/min f =.3mm/rev (Vf = 49mm/min) Tool Life : 1,6pcs - Work hardening is minimal with stable dimensional accuracy. Able to achieve 1.3 times better efficiency with 2.3 times longer tool life as compared to previous drill. Competitor s Solid Condition : Vc = 7m/min f =.2mm/rev (Vf = 318mm/min) Tool Life : 7pcs - The internal wall of the drilled hole was found to have work hardened, as such, the solid drill could not be use beyond 3 times regrinding and recoating. Stable ing On Low Rigidity Setups Achieving stable and long tool life even with low rigidity work, jig and machine. type : Output 2,pcs Smooth chip form. type : Output 676pcs Chips with multiple straight edges. Work material : S48C (Axel component) diameter : φ28mm Machine : Vertical M/C (BT4) Conditions : Vc = 8m/min, f =.23mm/rev, depth 3mm (blind hole), WET n Recommended Cutting Conditions ( type / type) 3 Achieving Drastic Reduction In Cutting Resistance type exhibits 25% less thrust force as compared to type! Thrust Force (N) 3, 2,5 2, 1,5 1, 5 f =.15 f =.2 f =.25 Feedrate, f (mm/rev) type type Work Material : S5C diameter : φ14mm Conditions : Vc = 8m/min Sharper cutting edges with overlap thinning significantly reduce thrust force and improve chip control, allowing stable drilling in low rigidity set ups. Vc: Cutting Speed (m/min), f: Feedrate (mm/rev) Work Soft General Hardened (~25HB) (25~32HB) (45HRC) (~2HB) Grey Ductile s [ Recommended Head type / type type / type type type type / type type / type type Cond. ødc min - optimum - max min - optimum - max min - optimum - max min - optimum - max min - optimum - max min - optimum - max min - optimum - max ~ ø16. ~ ø2. ~ ø3.8 v c (5-7-8) (5-7-8) (3-5-7) (4-5-6) (4-6-8) (4-5-7) ( ) f v c (5-7-8) (5-7-8) (3-5-7) (4-6-7) (5-7-9) (4-6-8) ( ) f v c (5-7-8) (5-7-8) (3-5-7) (4-6-7) (5-7-9) (4-6-8) ( ) f Note : Where machine and work clamp rigidity are good, conditions may be increased up to the maximum range. For 8xD drills, please use cutting speeds stated within the ( ). Before drilling 8xD holes, it is recommended that a guide hole of similar diameter is prepared. [ Inquire about drills designed specifically for s

4 (Large s) Large Dia. type Optimized cutting edge design for malleable material used in large sized casings X-type Thinning Reduces drift at the point of drill engagement X-type Thinning Aimed at reducing thrust forces under heavy drilling conditions Large Thinning Angle Improved chip management for highly malleable materials Large Helix Angle Design Designed to handle low machine and clamping rigidity conditions Edge Treatment Exclusively For Large s Prevents unexpected breakage when working with expensive materials High Toughness Substrate ing Precision Work material : SM49 (Base plate for construction machinery) size : φ33. x 5D Conditions : Vc=12m/min, f=.25mm/rev Coolant : Emulsion type ø33.15 ø33.1 ø33.5 ø33. ø32.95 ø32.9 ø32.85 High hole accuracy even with large diameters Measurement point Measurement point Entrance Midpoint Exit ing Resistance (Thrust) Work material : SS4 (Stacked plates) size : φ37.5 x 5D Conditions : Vc=9m/min, f=.35mm/rev Coolant : Emulsion type Good Chip Control 1, Stable even when drilling stacked plates ing Force (N) 8, 6, 4, 2, ing Time (sec) n Recommended Cutting Conditions (Large s) Vc: Cutting Speed (m/min), f: Feedrate (mm/rev) Work Soft (~25HB) General (25~32HB) Hardened (45HRC) (~2HB) Grey Ductile s [ Cond. min - optimum - max min - optimum - max min - optimum - max min - optimum - max min - optimum - max min - optimum - max min - optimum - max ødc ø31. ~ ø42.5 v c (3-5-8) (4-5-8) (3-4-6) (3-4-6) (4-6-9) (4-5-7) f Note : Where machine and work clamp rigidity are good, conditions may be increased up to the maximum range. For 8xD drills, please use cutting speeds stated within the ( ). Before drilling 8xD holes, it is recommended that a guide hole of similar diameter is prepared. [ Inquire about drills designed specifically for s 4

5 (For Structual ) MB Specially for drilling Rolled for Welded Structures (single or stacked plates) X-type Thinning DEX Coat Excellent fracture resistance and excellent chip control Cutting Edge Designed Exclusively For ing Structrual Application Examples for Structural Good Chip Control Unique wide and smooth flute shape significantly improve chip control and evacuation New J Flute Design Reduces peripheral edge chipping caused by sudden work shift High Toughness Substrate & Reinforced Edge Treatment Directs coolant at the cutting edge even during MQL drilling Centralized Oil Hole SM49YB V c =87m/min,f=.29mm/rev Competitor s Elongated Chips 15 o Point Angle Smooth flute surface greatly improves chip evacuation Highly Polished Flute SM49YB V c =87m/min,f=.29mm/rev n ing Length Comparison () Case Current Tool Tool Life Comparison (Cutting Length) Cutting Conditions 1 Comp A Comp A 17m 42m 2.5x tool life V c =46m/min f=.35mm/rev Coolant : MQL Compared to Current Tools, 1.7x ~ 3.x 2 Comp B Comp B 5m 1.7x tool life 87m V c =56m/min f=.3mm/rev Coolant : MQL Longer Tool Life 3 4 Comp C Brazed Comp D Comp C Comp D 32m 7m 3.x tool life 95m 1.7x tool life 12m V c =54m/min f=.3mm/rev Coolant : MQL V c =6m/min f=.3mm/rev Coolant : MQL Tool Cost Huge Potential Savings n Recommended Cutting Conditions () Vc: Cutting Speed (m/min), f: Feedrate (mm/rev) Work Rolled for Welded Structures SS4 Rolled for Welded Structures SM49 Rolled for Welded Structures SM52 Rolled for Welded Structures SM57 ødc ø24.5 ~ ø26.7 Conditions min - optimum - max min - optimum - max min - optimum - max min - optimum - max v c f

6 l Head Carbon ~.28%.29%~ l Holder Hardened 5D 8D 14 ødc h7 øds h6 h 1 n Heads (ø12.~ø18.5) [Grades - type: ACX7 / type: ACX8] n Holders M() l L(5D) l D(8D) Heads Holders type type h (ødc) M () L (5D) D (8D) 1 Cat. No. Stock Cat. No. Stock Range Cat. No. Stock Cat. No. Stock Cat. No. Stock 12. SMDT 12 l SMDT 12 l l 121 l l 122 l 9.1 From 12. to below 12.5 SMDH 12M l SMDH 12L l l 123 l l 124 l 12.5 SMDT 125 l SMDT 125 l l 126 l l 127 l 9.4 From 12.5 to below 13. SMDH 125M l SMDH 125L l l 128 l l 129 l 13. SMDT 13 l SMDT 13 l l 131 l l 132 l 9.7 From 13. to below 13.5 SMDH 13M l SMDH 13L l l 133 l l 134 l 13.5 SMDT 135 l SMDT 135 l l 136 l l 137 l l 138 l l 139 l l 14 l l 141 l 1.3 From 13.5 to 14.5 SMDH 14M l SMDH 14L l SMDH 14D l l 142 l l 143 l l 144 l l 145 l 14.6 SMDT 146 l SMDT 146 l l 147 l l 148 l l 149 l l 15 l l 151 l 11. More than 14.5 to 15.5 SMDH 15M l SMDH 15L l SMDH 15D l l 152 l l 153 l l 154 l l 155 l 15.6 SMDT 156 l SMDT 156 l l 157 l l 158 l l 159 l l 16 l l 161 l 11.6 More than 15.5 to 16.5 SMDH 16M l SMDH 16L l SMDH 16D l l 162 l l 163 l l 164 l l 165 l 16.6 SMDT 166 l SMDT 166 l l 167 l l 168 l l 169 l l 17 l l 171 l 12.2 More than 16.5 to 17.5 SMDH 17M l SMDH 17L l SMDH 17D l l 172 l l 173 l l 174 l l 175 l 17.6 SMDT 176 l SMDT 176 l l 177 l l 178 l l 179 l l 18 l l 181 l 12.9 More than 17.5 to 18.5 SMDH 18M l SMDH 18L l SMDH 18D l l 182 l l 183 l l 184 l l 185 l l mark: Stocked item l mark: Stocked item (expansion item) Please inquire about drill sizes not listed above. 6

7 Head Head Head MB l Assembled Carbon ~.28%.29%~ Only use / type drill heads for M/L/D type holders Hardened 5D 8D 14 ødch7 ødsh6 (Effective Flute Lenght) L s n Dimensions of Assembled 7 n Spare Parts, Recommended Tightening Torque M () L (5D) D (8D) Shank Cap Screw Wrench Recommended Tightening Dimensions Dimensions Dimensions Dimensions Torque L L L s ød s (N. m) BXD228IP TRDR8IP.75~ BXD228IP TRDR8IP.75~ BXD228IP TRDR8IP.75~ BXD228IP TRDR8IP.75~ BXD228IP TRDR8IP.75~ BXD259IP TRDR1IP.93~ BXD259IP TRDR1IP.93~ BXD259IP TRDR1IP.93~

8 Head Head Head MB l Head Carbon ~.28%.29%~ l Holder Hardened 5D 8D 14 ødc h7 øds h6 h 1 n Heads (ø18.6~ø24.8) [Grades - type: ACX7 / type: ACX8] n Holders M() l L(5D) l D(8D) Heads Holders type type h (ødc) M () L (5D) D (8D) 1 Cat. No. Stock Cat. No. Stock Range Cat. No. Stock Cat. No. Stock Cat. No. Stock 18.6 SMDT 186 l SMDT 186 l l 187 l l 188 l l 189 l l 19 l l 191 l 13.5 More than 18.5 to 19.5 SMDH 19M l SMDH 19L l SMDH 19D l l 192 l l 193 l l 194 l l 195 l 19.6 SMDT 196 l SMDT 196 l l 197 l l 198 l l 199 l 2. 2 l 2 l l 21 l 14.1 More than 19.5 to 2.5 SMDH 2M l SMDH 2L l SMDH 2D l l 22 l l 23 l l 24 l l 25 l 2.6 SMDT 26 l SMDT 26 l l 27 l l 28 l l 29 l l 21 l l 211 l 14.8 More than 2.5 to 21.5 SMDH 21M l SMDH 21L l SMDH 21D l l 212 l l 213 l l 214 l l 215 l 21.6 SMDT 216 l SMDT 216 l l 217 l l 218 l l 219 l l 22 l l 221 l l 222 l 14.8 More than 21.5 to 22.8 SMDH 22M l SMDH 22L l SMDH 22D l l 223 l l 224 l l 225 l l 226 l l 227 l l 228 l 22.9 SMDT 229 l SMDT 229 l l 23 l l 231 l l 232 l l 233 l l 234 l 15.1 More than 22.8 to 23.8 SMDH 23M l SMDH 23L l SMDH 2 l l 235 l l 236 l l 237 l l 238 l 23.9 SMDT 239 l SMDT 239 l l 24 l l 241 l l 242 l l 243 l l 244 l 15.4 More than 23.8 to 24.8 SMDH 24M l SMDH 24L l SMDH 24D l l 245 l l 246 l l 247 l l 248 l l mark: Stocked item l mark: Stocked item (expansion item) Please inquire about drill sizes not listed above. 8

9 Head Head Head MB l Assembled Carbon ~.28%.29%~ Only use / type drill heads for M/L/D type holders Hardened 5D 8D 14 ødch7 ødsh6 (Effective Flute Lenght) L s n Dimensions of Assembled n Spare Parts, Recommended Tightening Torque M () L (5D) D (8D) Shank Cap Screw Wrench Recommended Tightening Dimensions Dimensions Dimensions Dimensions Torque (N. m) L L L s ød s BXD311IP TRDR15IP 1.83~ BXD311IP TRDR15IP 1.83~ BXD311IP TRDR15IP 1.83~ BXD3512IP TRDR15IP 2.79~ BXD3512IP TRDR15IP 2.79~ BXD3512IP TRDR15IP 2.79~

10 l Head Carbon ~.28%.29%~ l Holder Hardened 5D 8D 14 ødc h7 øds h6 h 1 n Heads (ø24.9~ø3.8) [Grades - type: ACX7 / type: ACX8] n Holders M() l L(5D) l D(8D) Heads Holders type type h (ødc) M () L (5D) D (8D) 1 Cat. No. Stock Cat. No. Stock Range Cat. No. Stock Cat. No. Stock Cat. No. Stock 24.9 SMDT 249 l SMDT 249 l l 25 l l 251 l l 252 l l 253 l l 254 l 15.8 More than 24.8 to 25.8 SMDH 25M l SMDH 25L l SMDH 25D l l 255 l l 256 l l 257 l l 258 l 25.9 SMDT 259 l SMDT 259 l l 26 l l 261 l l 262 l l 263 l l 264 l 16.4 More than 25.8 to 26.8 SMDH 26M l SMDH 26L l SMDH 26D l l 265 l l 266 l l 267 l l 268 l 26.9 SMDT 269 l SMDT 269 l l 27 l l 271 l l 272 l l 273 l l 274 l 17.1 More than 26.8 to 27.8 SMDH 27M l SMDH 27L l SMDH 27D l l 275 l l 276 l l 277 l l 278 l 27.9 SMDT 279 l SMDT 279 l l 28 l l 281 l l 282 l l 283 l l 284 l 17.7 More than 27.8 to 28.8 SMDH 28M l SMDH 28L l SMDH 28D l l 285 l l 286 l l 287 l l 288 l 28.9 SMDT 289 l SMDT 289 l l 29 l l 291 l l 292 l l 293 l l 294 l 18.3 More than 28.8 to 29.8 SMDH 29M l SMDH 29L l SMDH 29D l l 295 l l 296 l l 297 l l 298 l 29.9 SMDT 299 l SMDT 299 l 3. 3 l 3 l l 31 l l 32 l l 33 l l 34 l 19. More than 29.8 to 3.8 SMDH 3M l SMDH 3L l SMDH l l 35 l l 36 l l 37 l l 38 l l mark: Stocked item l mark: Stocked item (expansion item) Please inquire about drill sizes not listed above. 1

11 Head Head Head MB l Assembled Carbon ~.28%.29%~ Only use / type drill heads for M/L/D type holders Hardened 5D 8D 14 ødch7 ødsh6 (Effective Flute Lenght) L s n Dimensions of Assembled n Spare Parts, Recommended Tightening Torque M () L (5D) D (8D) Shank Cap Screw Wrench Recommended Tightening Dimensions Dimensions Dimensions Dimensions Torque (N. m) L L L s ød s BXD414IP TRDR2IP 4.14~ BXD414IP TRDR2IP 4.14~ BXD414IP TRDR2IP 4.14~ BXD4515IP TRDR25IP 4.98~ BXD4515IP TRDR25IP 4.98~ BXD4515IP TRDR25IP 4.98~

12 SEC- (Large s) Carbon ~.28%.29%~ Hardened 5D 8D l Head l Holder 14 ±3 ø c h7 øds h6 1 n Heads (ø31.~ø42.5) [Grade - type: ACX8] n Holders M() l L(5D) l D(8D) Heads Holders type (ødc) M () L (5D) D (8D) h 1 Range Cat. No. Stock Cat. No. Stock Cat. No. Stock Cat. No. Stock 31. SMDT 31 l More than 3.8 to 32. SMDH 32M l SMDH 32L l SMDH 32D l l 32.5 SMDT l 21. More than 32. to 33.5 SMDH 335M l SMDH 335L l SMDH 335D l SMDT 34 l More than 33.5 to 35. SMDH 35M l SMDH 35L l SMDH 35D l l 35.5 SMDT l 23. More than 35. to 36.5 SMDH 365M l SMDH 365L l SMDH 365D l SMDT 37 l l 25. More than 36.5 to 38. SMDH 38M l SMDH 38L l SMDH 38D l l 38.5 SMDT l 25. More than 38. to 39.5 SMDH 395M l SMDH 395L l SMDH 395D l SMDT 4 l l 27. More than 39.5 to 41. SMDH 41M l SMDH 41L l SMDH 41D l l 41.5 SMDT l 27. More than 41. to 42.5 SMDH 425M l SMDH 425L l SMDH 425D l l mark: Stocked item l Assembled Only use type drill heads for M/L/D type holders 14 ødch7 ødsh6 (Effective Flute Lenght) L s n Dimensions of Assembled n Spare Parts, Recommended Tightening Torque M () L (5D) D (8D) Shank Cap Screw Wrench Recommended Dimensions Dimensions Dimensions Dimensions Tightening Torque L L L s ød s (N. m) BXD4515IP TRDR25IP 4.98 ~ BX515 HD4 7.2

13 SEC- (For Structual ) MB Carbon ~.28%.29%~ Hardened l Assembled l Assembled Only use MLB type drill heads for B3 type holders 15 ødc h7 15 ødch7 ødsh6 h 1 L s n Heads [Grade - : ACX8] n Holders B3 () n Dimensions of Assembled n Spare Parts, Recommended Tightening Torque Heads Holders Shank Cap Screw Wrench B3 () Dimensions Dimensions h 1 Cat. No. Stock Cat. No. Stock L s ød s Recommended Tightening Torque (N. m) 24.5 SMDT 245MB l 14.1 SMDH 24B3 l BXD3512IP TRDR15IP 2.79~ MB l 26.5 SMDT 265MB l 15.3 SMDH 26B3 l BXD414IP TRDR2IP 4.14~ MB l l mark: Stocked item Please inquire about drill sizes not listed above. Improved Lubrication Supply to Cutting Edge / type Coolant supply is directed closer to the cutting edge Holder Head Coolant Comparison of Cutting Resistance (Thrust Force) Cutting Force (N) 7, 6, 5, 4, 3, 2, Thrust increases at start of hole / type Cutting Force (N) 7, 6, 5, 4, 3, 2, Stable drilling at start of hole 1, 1, Cutting Time (sec) Cutting Time (sec) 14 Work Material: SS4, : ø24.7, Conditions: Vc=7m/min, f=.35mm/rev, Coolant: MQL Due to the difference in the position of the oil holes and serration shape, / type drill heads are not compatible to use with B3 type holders and similarly incompatible for drill heads to be use with normal holders. 13

14 MB Head Replacement Instructions Take care to avoid chipping (1) Remove the used head. Clean off all foreign particles from the serrated portion of the drill holder with air blow. (2) With a wire brush, further remove any foreign particles that cannot be cleared by air blow. (3) Take care when tightening the screws as the area around the screw hole will easily chip if the wrench slips. Ensure that the wrench is positioned squarely and its head is sitting properly in the screw head pattern to prevent wearing out the pattern. (4) Screws should be replaced as soon as they start to show signs of wear or shape deformation after long-term usage. (5) Refer to the drill set tables for the appropriate tightening torque. Precautions If the drills are not utilized for long periods of time, it is advised that the drill heads and bodies are stored separately. Due to the difference in the position of the oil holes and serration shape, / type drill heads are not compatible to use with B3 type holders and similarly incompatible for drill heads to be use with normal holders. The SMD drill is not recommended for the following work shapes. For such applications, it is advisable to either use a solid or brazed drill and ensure that the feedrate is reasonably reduced. Work examples Slanted entry face Intersecting holes Interruption at exit or slanted exit face Very hot or lengthy chips may be discharged while the machine is in operation. Therefore, machine guards, safety goggles or other protective covers must be used. Fire safety precautions must also be considered.! SAFETY NOTES Please handle with care as this product has sharp edges. Improper cutting conditions or mis-handling of the tool may result in breakages or projectiles. Therefore, please use the tool within its recommended conditions. When using non-water soluble cutting oil, precautions against fire must be taken and please ensure that a fire extinguisher is placed near the machine. Global Marketing Department : 1-1 Koyakita 1-Chome, Itami, Hyogo Japan Tel : (+81) Fax : (+81) SHAP16-3JV18