P.29,30 P.33,34 P.35,36 BT series FEATURES >> P.1-6 FEATURES >> P.1-6 FEATURES >> P.1-6 HPC MICRON CHUCK HPC-H MICRON CHUCK H series HPC-M MICRON CHUCK M series P.37,38 P.39 P.42 P.44 FEATURES >> P.7-8 FEATURES >> P.9-10 FEATURES >> P.9-10 CTH,CTH12L CT-G RSC RSC-G HARD CHUCK,SLIM HARD CHUCK COLLET CHUCK COLLET CHUCK G Type P.50 P.51 P.53 P.55 FEATURES >> P.17-18 FEATURES >> P.11-12 SDC EDC HDU SYFN,SYFS DRILL CHUCK SLIM DRILL CHUCK Hy-Dual CHUCK SYNCHRO TAP HOLDER type SYFN,SYFS P.57 P.61 P.62 P.63 TPC TWC FIC-AN FIC-VN TWC FIC-N TAP HOLDER (Clockwise Rotation) TWINCUT FINECUT TWINCUT,FINECUT for LARGE BORE P.67 P.68,69 P.70 P.71,72 SLA,SLB MTA,MTB FMA FMB,FMC END MILL HOLDER MORSE TAPER HOLDER (Type A) FACE MILL ARBOR (Type A) FACE MILL ARBOR (Type B,C) P.73 P.74,75 P.76 P.77,78 FEATURES >> P.13-16 FM SMA,SMB SCA TDU RADIUS MILL LONG ARBOR SHELL MILL ARBOR (Type A,B) SIDE CUTTER ARBOR TRACTION DRIVE SPEED ACCELERATOR

Quality tooling system applicable to a wide range of jobs. P.79 P.80 P.81 P.82 OH-SL OH-MT OH-CTH OH-TPC OIL-HOLE ADAPTER,STRAIGHT SLEEVE OIL-HOLE ADAPTER,MT SLEEVE OIL-HOLE HARD CHUCK OIL-HOLE TAP HOLDER P.83,84 P.88 P.91,92 HSK series FEATURES >> P.1-6 FEATURES >> P.1-6 AGCT-RSC ANGLE JET (Angle Head Holder) HPC MICRON CHUCK HPC-H MICRON CHUCK H series P.93,94 P.95 P.98 P.99 FEATURES >> P.1-6 FEATURES >> P.7-8 FEATURES >> P.9-10 FEATURES >> P.9-10 HPC-M CTH RSC RSC-G MICRON CHUCK HARD CHUCK COLLET CHUCK COLLET CHUCK G Type P.105 P.107 P.109 P.111,112 FEATURES >> P.17-18 FEATURES >> P.11-12 HDU SYFN,SYFS TWC-S FIC-AN,FIC-VN Hy-Dual CHUCK SYNCHRO TAP HOLDER type SYFN,SYFS TWINCUT FINECUT P.110,113 P.115 P.116 P.117 TWC,FIC-N-S SDC SLA MTA,MTB TWINCUT&FINECUT for LARGE BORE DRILL CHUCK END MILL HOLDER MORSE TAPER HOLDER(Type A,B) P.118-120 P.121 FMA,FMB,FMC FACE MILL ARBOR (Type A,B,C) SMA SHELL MILL ARBOR (Type A)

P.125 P.125 P.126 ST series FEATURES >> P.7-8 FEATURES >> P.9-10 CTH HARD CHUCK RSC COLLET CHUCK EDC SLIM DRILL CHUCK P.126 P.127 P.128 P.129 TPC TWC FIC-AN,FIC-VN S TAP HOLDER (Clockwise Rotation) TWINCUT FINECUT SLIM SIDE LOCK HOLDER P.129 P.130 P.130 P.131 MT FMA SCA AFT01 MORSE TAPER COLLET FACE MILL ARBOR (Type A) SIDE CUTTER ARBOR ADJUSTABLE TAPPER P.131 AFT02 SIDE LOCK TAPPER P.135 P.135 P.136 Versatile Tool FEATURES >> P.7-8 FEATURES >> P.21-22 CTH FMA FACE MILL ARBOR (Type A) CTH,FMA HARD CHUCK, FACE MILL ARBOR (TYPE A) P.138 FEATURES >> P.7-8 P.139-142 CTH HARD CHUCK (Collet Holder) S-HOLDER, S1-S6 Collet

44 POINT Acceptable tap size HOLDER COLLET JIS TAP SIZE POINT 5 Machining Performance 5 With the Synchro Tap infinitesimal float is used, increasing the degree of transparency, thereby illustrating the accurancy of threads are improved. DIMENSIONS BT P.55,56 HSK P.107,108-12

TRACTION DRIVE SPEED ACCELERATOR Full-functions in a compact body. 1 1 Basic principle Power of the traction drive is transmitted by the rolling contact mechanism via oil film of traction grease characterized by high viscosity at high pressures. Contact pressure P is created at each contact surface on planetary rollers, a sun roller and a stationary housing, which are assembled with elastic deformation. By this pressure, the oil films changes to high viscosity one (only when contact pressure P is imposed) so that the power can be transmitted at the roller contact area. The traction force T is formulated by Equation (1). T=µP (1) where, µ:traction coefficient, P:Contact pressure This unit is a speed increasing device which the revolution of the planetary roller is used for input side and the rotation of the sun roller is output side. The speed increasing ratio is formulated by Equation (2). n=1+ (2) where, D:Bore diameter of stationary housing d:outside diameter of sun roller Planetary rollers Sun roller Stationary housing High viscosity oil film Traction force (Rolling transmission power)

POINT 4 4 Covering a wide application range 1 Application range k Cutting power 10 5 TDU40 TDU17 0 1 2 10 4 rpm Output speed 3 4 2 Torque transmission characteristics Slip ratio 2 1 TDU17 TDU40 0 0.5 1.0 1.5 6.5 7.0 7.5 8.0 Nm 1Nm 0.1kgfmOutput torque 3 Runout and Bending rigidity Type Runout Bending rigidity Displacement Main spindle Displacement W Nm0.1kgfm Runout of main spindle Bending = W rigidity (Displacement - Displacement) Runout Load 4 Temperature rise (Temperature-Coolant temperature) Temperature rise 50 40 30 20 10 0 TDU1730,000rpm TDU4012,000rpm 10 20 30 40 50 minrunning time Housing Output spindle Radiation thermometer 200kPa2kgf/F Coolant pressure 20: Coolant temperature 20: Room temperature 15R/X Coolant amount 5 Axial displacement m Displacement 100 80 60 40 20 0 TDU1730,000rpm TDU4012,000rpm 10 20 30 40 50 minrunning time Non contact type displacement meter 200kPa2kgf/F Coolant pressure 20: Coolant temperature 20: Room temperature 15R/X Coolant amount 6 Noise level db Noise level 90 80 70 60 50 6,200rpm Main spindle only TDU4012,000rpm TDU1730,000rpm 40 1 2 3 4 10 4 rpmoutput speed - 16

HY-DUAL CHUCK TOOL HOLDER FOR DIFFICULT TO MACHINE MATERIALS POINT 1 Dual-clamping method 1 Dual chucking by Hydraulic & Mechanical Only high rigidity & high clamping power can prevent the end mill from being pull-out and can prevent chattering. SHOWA has solved the so-called "wooden pestel phenomenon" which causes the pulling out of end mill, by clamping the cutting tool's shank nose & shank end. "Vibration" caused by chattering is removed by the attenuation mechanism of hydraulic and spring. POINT 2 2 Structure Thrust rilg is plled down. Chucking tube At the same time, the piston is being pressed down. Unclamp Chucking tube shrink. At the same time, the hydraulic clamping is activated. Hydro Clamp Clamping is complete. Piston Thrust ring - 17

POINT 3 3 "Wooden pestel phenomenon" Trumpet-like wear Bending resistance R (Feed force + Back component forceåj Headband-like rust direct chucking Straight collet Trumpet-like wear Headband-like rust Bending resistance R (Feed force + Back component forceåj) Chucking throgh collet A tool, while being deformed by a bending moment in the milling process, twists in the tool holder, the deformation occurs repeatedly by high pressure in a short stroke.(bending moment: Bending resistance R (N) x tool protruding amount L (m)). The mouths of both the collet and the holder will expand and wear flare by this movement. These mouths are easily deformed by the principle of leverage, as the ratio below is increased. L (tool protruding amount) /H (tool gripping length) The material such as steel having a lower Young's modulus is more likely to deform than the carbide of the tool. A circumference difference [e=(d1-d)] occurs between the tool shank and the holder mouth because of abrasion expansion. The tool turns more than the holder and at the same time it starts pulling out little by little. In addition, debr is generated in the worn area creates a rust ring and is adhered mainly to the shank. It is considered that, as measures, to reduce the bending moment is mainly common. POINT 4 4 Machining Performance Test cut with Hy-Dual chuck and conventional milling chuck in the same program Comparison of surface roughness Holder in use : BT50-HDU20-100(HY-DUAL CHUCK) BT50-HPC20-105(MICRON CHUCK) Cutting tool : Six flutes Cemented carbide endmill Work materials : SKD61 Cutting condition Rotational speed Feeding rate Tool projection Result: improvement of surface roughness was observed DIMENSIONS BT P.53,54 HSK P.105,106-18

SHOWA SKM TOOL SYSTEM TOOL HOLDERS FOR MULTI-TASKING MACHINE POINT 1 1 Features High-precision High rigidity machining High Speed Machining HSK connection depends on a combination of axial clamping forces and taper-shank interference. HSK's clamping mechanism and additional application of drawbar force positively lock the two elements together into a joint with a high level of radial and axial rigidity. This contributes to a secure connection by guaranteeing strong contact between the shank and the spindle. By a combination of axial clamping forces and taper-shank interference, positiong repeatability improves highr than BT shank, enabling high-precision machining. There is no subduction in the high-speed machining because all from holder to clamp unit are in shymmetrical shape. Lock rod End face contact Steel ball Spindle Holder - 19

FACE MILL ARBOR (Type B) BT -FMB - Thru -the-tool Coolant Available (Option) BBT Available FIG.1 FIG.2 ø ø ø ø ø ø ø ø ø ø ø ø ø ø ø FIG.3 FIG.4 NOTE : For Sandvik cutters. ø ø ø ø ø ORDERING EXAMPLE BT40 - FMB 25.4-060 ød GL L Shank Size Name ød G.L. Length - 71

SHELL MILL ARBOR (Type A) BT -SMA - BT series FIG.1 FIG.2 ST series ø ø ø ø ø ø ø ø ø Versatile Tool HSK series FIG.3 FIG.4 ø ø ø ø ø ø ø ø ø ø ø Cutting Tool ø ø ø ø ø ø ORDERING EXAMPLE NOTE : Arbors in ( ) for cutters in inches are in stock. BT40 - SMA 16-060 ød GL L Shank Size Name ød G.L. Length Accessories Data - 74

SHELL MILL ARBOR (Type B) BT -SMB - ø ø ø ø ø ø ø ø ø ø ø ø ø ø NOTE : For shell endmill with brazed T/C tips. ORDERING EXAMPLE BT40 - SMB 38.1-060 ød GL L Shank Size Name ød G.L. Length ACCESSORIES for FACE MILL ARBOR ACCESSORIES CLAMP BOLT FOR FACE MILL ARBOR ø ø - 75

SIDE CUTTER ARBOR BT -SCA - ø ø ø ø Versatile Tool ST series HSK series BT series ø ø Cutting Tool Accessories Data ORDERING EXAMPLE BT40 - SCA 12.7-060 ød GL L Shank Size Name ød G.L. Length - 76

TRACTION DRIVE SPEED ACCELERATOR FEATURES P.13-16 BT -TDU PATENTED Traction drive (TD) speeder is an A.T.C. type speed accelerator, which employs planetary rollers and is co-developed and introduced to the market by Koyo Seiko and SHOWA for the first time in the world. FEATURES 30,000min -1 is obtainable on normal M/C. High and stable torgue transmission enables small diameter drilling and endmilling, as well as deep grooving. Capable even for grinding on M/C, with minimum vibration and noise. Compact and light weight A.T.C. type. Broadly adjustment Positioning Pin "One-touch" adjustment, and a height range of 40 mm. POSITIONING BLOCK - 77