Our New Products for 2004 Innovative New Products

　Our New Products for 2004 Innovative New Products for an Innovative New World Dec. 2004 YUKEN KOGYO. CO. LTD. 1

Leading New Products 1. Compact Power Unit packages YF PACK 2. 70 Series Directional Valve 3. Proportional Shockless Valve with Controller 4. ELDF(H)G High Response Proportional Valve 5. LSV(H)G SERVO Valve 6. A 3 H Axial Piston Pump 2

Y-1 YF Pack New Generation Hydraulic Power Package ! Can you see the next generation coming ? Pat. Pend. Compact Sized Hydraulic Power Source 3

Y-2 The Existing Design of PAL Pump Developed in 1996 YP Pack The Sectional Structure of Pal Pump 4

New Concept of YF Pack Fan Cooler Induction Motor A Series Piston Pump The Sectional Structure of YF Pack Y-3 Tank　10 L Pat. Pend. 5

Y-4 Hydraulic　Circuit　of YF Pack T P Dr M M O 6

Features of YF Pack（１） Y-5 • Cubic shape Integrated together with Motor, Pump & Reservoir • Compact, Space saving • Low oil temperature rise up 　　　　≦ room temp. + 53 F　at F. C. O. operation 7

Features of YF Pack（２） Y-6 • Low noise • Saving energy More than 10% power saving from conventional Power Packs • Water-based fluids option available 8

Y-7 Other Types of YF Pack tank 10Ｌ ・ Horizontal type with extended tank (Optional)　 ・Vertical type 　　 ・ Directional valves and Modular valves and also other accessories are available to be installed 9

Advantages of YF Pack Y-8 • Easy installation for the application • Compact size • Easy to use Hydraulic Line Electric Source 10

S-1 New DSG-01… 70 Series Valves Superior Performance without the Higher Price A Better Solution for the D 03/ NG 6 solenoid valve 11

The Higher Performance of Yuken’s New 70 Series Solenoid Valve S-2 • Higher Maximum Flow Rates up to 26 GPM • Higher Maximum Pressure Up to 5075 PSI • Higher Tank or Tube Pressure Up to 3045 PSI • Lower Pressure Drop 10% average reduction • Smaller Foot Print 8. 27 inches reduced to 8. 05 inches • Better Water Resistance Increased to IP 65 • More Electrical Connections Wire Leads, 3 & 5 Pin Brad Harris • Same Great Options Same options as the current 60 Series 12

S-1 Why is it better? New Technology makes all the difference • Smaller Coils - But with the same power • Stronger Core Tube – For higher tank pressures • Longer body – For higher flow capacities and higher pressure rating Yuken Kogyo a Technology Leader 13

S-1 Proportional Shock-less Valve and mated Amplifier 14

Advantages of Proportional Shock -less Valve S-2 • Maximum flow (top speed) is adjustable freely • Each adjustment value is loaded on CPU and display. • Most suitable smooth, shock-less acceleration and deceleration can be obtained. • Easy setting and High repeatability by CPU control. Adjust top speed freely 15

S-3 The EDFG valve can be used Two Ways: 1) Proportional Valve controlled with +/10 V DC command signal thru a Yuken AMN-W-10 Amplifier 2) OR 3) 2) Single Axis Controller when mating the Shock-less valve with a Yuken AMNG amplifier 16

Formation of Shock-less Valve and Amplifier S-4 ・AMN-G 17

S-5 A Example of Shock-less Patterns 18

Specification of Shock-less S-6 Valve and Amplifier • Valve ： 25 MPa，30 L/min • Amplifier ： DC 24 V （35 W） power supply Shock-less curve : 9 slope pattern selections (Designed to round off the pattern) Ramp Time range Max. 99 sec : 0～ 99 sec 19

ELDFHG Series High Response Type Proportional Electro-Hydraulic Directional and Flow Control Valves ELDFG-01/03(1/8, 3/8) & ELDFHG-04/06 (1/2, 3/4) Sub-plate Mounting ELDFHG-04&06 April. 2003 YUKEN KOGYO CO. , LTD. 20

Outline ELDFG/ELDFHG Series High Response Proportional • Electro-hydraulic Directional & Flow control valves • High response characteristics • Closed loop spool feedback • Zero-lap spools are excellent for position and pressure control. ELDFG-01 ELDFG-03 ELDFHG-04&06 21

Features ●High response characteristics equivalent to servo valves 　　　 ELDFG-01： 48 Hz/-90°(± 25％ Amplitude) 　　　 ELDFHG-06： 66 Hz/-90°(± 25％ Amplitude) ● Excellent anti-contamination characteristics Troubles caused by contaminant in oil can be reduced greatly versus the jet-pipe and nozzleflapper type servo valves. 22

Line up Pmax 5075 PSI 01 (10~35 : ΔP=218) 04(280: ΔP=145) 06(350: ΔP=145) 06 (500: ΔP=145) 03 (40/80 : ΔP= 218) 100 300 500 Max. Flow　L/min at ΔP= 145 or 218 PSI 23

Specifications “ ELDFG-01&03 ” Note 1) The above characteristics were measured with each valve so they may vary depend upon hydraulic circuit of actual machine. 24

Specifications “ ELDFHG-04&06 ” Note 1) The above characteristics were measured with each valve so they may vary depend upon hydraulic circuit of actual machine. 25

Structure ELDFG-03 ELDFHG-04 26

Power Amplifier AMN-L-01 - -10 AMB-EL 40 191. 4 90 100 115 128. 5 160 30 AMN-L AMB-EL 27

Performance data Frequency response ELDFHG-04 Pressure： 14 MPa Pilot pressure ： 14 MPa Spool stroke ：± 25% Circuit diagram ：A・B Port Closed 28

LSVHG Series High-speed Linear Servo Valves LSVG-03 (3/8) & LSVHG-04/06/10 (1/2, 3/4, 1) Sub-plate Mounting LSVHG-06 April. 2003 YUKEN KOGYO CO. , LTD. 29

Outline 　LSVG/LSVHG Series High-Speed Linear Servo Valves offer extremely high response and excellent anti-contamination characteristics. 　　　・An intensified small linear motor drives the spool directly. 　　　・A differential transducer electrically detects spool position 　　　 for feedback control. 　　These valves are suitable for the following machines 　 　which require high speed & high precision control. 　　　・High Speed Nibbling Machine 　　　・High Speed Injection Molding Machine 　　　・Die Casting Machine 　　　・Steel Mill Equipment 　　　・Testing Equipment LSVG-03 30

Features High response characteristics LSVG-03 : 450 Hz/-90°(± 25% Amplitude), step response 2 ms (0 -100%) LSVHG-10 : 100 Hz/-90°(± 25% Amplitude), step response 8 ms (0 -100%) Excellent anti-contamination characteristics The valves can be used with fluid of which contamination grade is NAS class 10. Exclusive power amplifier to optimize valve characteristics are available. SK 1119 31

Line up Pmax 4560 ~ 5075 PSI 03 (1~16) 04 (53~132) 132 GPM 04 (200) 06 (240) 264 GPM 06 (340) 10 (400) 400 GPM Flow Rate GPM at diff. P = 1000 PSI 32

Specifications “ LSVG-03 ” q Note 1 Back pressure for the drain port should be less than 7 PSI and also not under a vacuum. q Note 2 The above characteristics are measured values for each individual valve, which is dependant 33 upon the hydraulic circuit, hence the figures may vary.

Specifications “ LSVHG-04, 06, 10 ” q Note 1) Max. T-Line Back Pressure should be less than the actual supply pressure. q Note 2) Back Pressure for the drain port should be less than 7 PSI and also not under a vacuum. q Note 3) Supply Pressure of the Pilot Valve should be 218 -5075 PSI (LSVHG-10 218 -4560 PSI) and should also be more than 60% of q the actual supply pressure when the valve is in operation. q Note 4) Pilot Flow is calculated at 2030 PSI of Pilot Pressure and the above stepped response. 34 q Note 5) Volume of the Internal Drain is the total volume from main and pilot spools.

Structure LSVG-03 -40 -10 LSVHG-04/06/10 Body Cover-A Cover-B LVDT Spring -B Spring　 follower Spool Spring-A 35

Performance data Step response Pressure： 14 MPa Pilot pressure ： 14 MPa Oil viscosity ： 30 mm 2/s LSVHG-04 -750 -（2 P）－（E）（T）－10 Flow：P→B→A→T Input voltage： 100% 0% 5 ms Flow：P→A→B→T 0% Input voltage：-100% 5 ms 36

Performance data Frequency response LSVHG-04 -750 -（2 P）－（E）（T）－10 Pressure： 14 MPa Pilot pressure ： 14 MPa Spool stroke ：± 25% Oil viscosity ： 30 mm 2/s 37

A 3 H Series High-Pressure Variable Piston Pump April. 2003 YUKEN KOGYO CO. , LTD. 38

Features A 3 H Series The ultimate in pump design developed by Yuken. • Optimal control types available for industrial machines and industrial vehicles • Wide displacement range with single and through drive pump • High performance having maximum pressure up to 5075 PSI • Low noise level and high reliability based on well proven service • Compact in size, greater ratio of Output power to Mass 39

Compact 40

Displacement 41

Specifications “ 01” 42

Structure “ 01” 43

Control Type “ 01” “ 09” “ 14” 　“ 01”: Pressure Compensator Type 　“ 09”: Constant Power Control Type 　“ 14”: Load Sensing Type 　“ 55”: Two Pressure & Two Flow Control Type 　　　　（High pressure set : By relief valve) “ 55” 44

“ 09” Constant Power Control Type A 3 H 56 -FR 09 -22 B 4 K-10 Note) Hydraulic power (k. W) changes according to shaft rotation speed. 45

Through Drive Type A 3 H 71 with Gear Pump Splined Shaft A 3 H 1671 tandem pump Keyed Shaft 46

Tandem Pumps 47

Constant Power Control “ 09” Structure of Control Section Graphic Symbol Q p cam feedback piston α N M control piston 0 spring compensator spool pp Pump swash-angle(α) changes in inverse proportion to delivery pressure(p). Under power control condition, the figure p ×α remains in constant balance between two forces acting on cam. One force is spring acting via the compensator spool, the other force is delivery pressure via the feed back piston. The operating point change is dependent on swash angle. Consequently, pump oil power (p × Q) is kept constant at constant condition of shaft speed(N) because Q=N ×function(tanα). 48

Constant Power Control “ 09” Performance Data: A 3 H 180 Test condition ・Hydraulic oil : ISO VG 32 ・Temperature : 40℃ ・Oil viscosity : 32 mm 2/sec ・Max. speed : 1800 r/min ・Control power set : 75 k. W Test condition ・Hydraulic oil : ISO VG 32 ・Temperature : 40℃ ・Oil viscosity : 32 mm 2/sec ・Max. speed : 1500 r/min ・Control power set : 45 k. W Output flow Input power Pressure 49

Load Sensing “ 14” Load Sensing Flow Graphic Symbol Pressure Flow Const. Flow Control Shaft Speed ●Variable Flow Compensator Setting: 1. 0~3. 0 MPa ●Pilot relief valve connection via remote control port (pp) 50

Noise Level Characteristics Typical Data; at Max. Full Flow, N= 1800 r/min 1 meter away from pump head cover 51

Noise Level Characteristics Typical Data; at Full Cut Off, N= 1800 r/min 1 meter away from pump head cover 52

End Cover Doc. No. ：PPD. 2797 　Compiled by YUKEN Product Planning Section 　Date of issue： 4/03/2003 Reference Publication Pub. No. ：EL-0108 Title：A 3 H Series High Pressure Variable Displacement Pumps Date of issue： 9/25/2002 ALA Industries Limited. 1150 Southpoint Drive, Suite D Valparaiso, IN 46385 Tel: 219 -465 -4197, Fax: 219 -477 -4194 www, yuken-usa. com YUKEN KOGYO CO. , LTD. □International Business Department 1 Miyamae, Fujisawa, Kanagawa Prefecture, 251 -8525 Japan Telephone：+81 -466 -23 -2107 Facsimile：+81 -466 -27 -7100 e-mail：int. bd@yuken. co. jp Internet：www. yuken. co. jp 53