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SECTION E

This Section Contains The Following:

Page

Press Servicing  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E-2

Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E-2

Lockable Switches & Valves  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E-2

Servicing The Pneumatic System  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E-3

Air Lockout Valve  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E-3

Air Filter  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E-4

Air Pressure Regulators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E-4

Air Pressure Gauges  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E-4

Solenoid Air Valves  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E-4

Air Pressure Switches  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E-5

Air Line Lubricators  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E-5

To Fill The Air Line Lubricators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E-5

To Adjust The Clutch/Brake Air Line Lubricator  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E-6

To Adjust The Slide Adjust Motor Air Line Lubricator  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E-6

Counterbalance System  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E-7

Theory Of Operation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E-7

Air Pressure Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E-8

Determining Die Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E-8

Alternate Methods Of Air Pressure Adjustment  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E-8

Balancing Slide And Die Weight  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E-8

Percent Motor Load  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E-8

Effects Of Improper Pressure  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E-9

Service And Maintenance  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E-9

Re-applying Air After Shutdown  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E-9

To Check For Air Leaks In The Counterbalance System  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E-9

To Replace Slide Counterbalance Cylinder Air Seal  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E-9

Flywheel Brake  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-10
Flywheel Brake Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-11
Die Cushion  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-11

To Check For Air Leaks In The Die Cushion System   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-11
To Replace Rail Mounted Die Cushion System Air Seals  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-11
To Replace Trunion Mounted Die Cushion System Air Seals  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-12

Air Reservoir Tanks  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-15
Safety Relief Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-15
Fusible Plugs  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-15
Drain Cocks  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-15
Air Leaks  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-15

E - 1

Содержание IOI

Страница 1: ...Manual No 1010C MINSTER 8952 399 15 00 Service Manual OBI OBS SERIES PRESS MODEL...

Страница 2: ...Manual No 1010C MINSTER 8952 399 15 00 Service Manual OBI OBS SERIES PRESS MODEL...

Страница 3: ...ecifications designs and materials with out notice consistent with sound engineering principles and recognized modern practices IMPORTANT In order to more clearly show details of the Minster Model 101...

Страница 4: ...n the press to remind personnel of hazards that may not be obvious when and if improper procedures are followed The objective here is to establish SAFE operating procedures for all personnel associat...

Страница 5: ...g Procedure C 7 Digital Speed Meter Calibration C 8 To Calibrate The Digital Speed Meter C 8 Servicing Procedure C 8 Remote Controls C 9 Flywheel Rotation C 9 To Check Flywheel Rotation C 9 Air Supply...

Страница 6: ...ubricator E 6 Counterbalance System E 7 Theory Of Operation E 7 Air Pressure Adjustments E 8 Determining Die Weight E 8 Alternate Methods Of Air Pressure Adjustment E 8 Balancing Slide And Die Weight...

Страница 7: ...ation F 10 Factor Affecting Parallelism And Vertical Movement F 11 SECTION G Pages G 1 thru G 6 Servicing The Frame And Drive Assembly G 2 Relieving A Slide From A Stuck On Bottom Condition G 2 Using...

Страница 8: ...s I 4 Weekly Checks I 4 Monthly Checks I 5 Semi Annual Checks I 5 Pneumatic Components I 7 Weekly Checks I 7 Monthly Checks I 7 Electrical Equipment I 9 Weekly Checks I 9 Monthly Checks I 9 Lubricatio...

Страница 9: ......

Страница 10: ...SECTION B This Section Contains The Following Page Press Identification B 2 Preparation For Use B 3 Press Safety B 4 B 1...

Страница 11: ...IDENTIFICATION Optional Counterbalance Assembly N A On Super Speed Press Main Drive Motor Flywheel Cover Lifting Lug Limit Switch Front Cover Slide Bolster Plate Air Line Lubricator Clutch Solenoid Va...

Страница 12: ...ve UNDERSTAND PRESS OPERATING PROCEDURES Read and understand all information provided in the Model 101 OBI OBS Series Press Operation Manual Learn to Inch and Stroke the slide before the dies are inst...

Страница 13: ...the applica ble Federal and State Regulations with a safeguarding device Personal protective equipment such as safety hel mets tongs gloves hand pads spats and protec tive sleeves must also be provide...

Страница 14: ...Lube Line Installation C 5 Drive V Belt Installation C 5 Electrical Connections C 6 Digital Meters Optional C 6 Digital Percent Of Load Meter Calibration C 6 To Calibrate The Digital Percent Of Load M...

Страница 15: ...instructed to use adequate block ing when placing slings around major frame parts to prevent cables from crushing oil lines or damaging electrical conduit and or other exposed components CAUTION NEVE...

Страница 16: ...dard threaded fasteners bolts screws etc are used on Minster Model 101 OBI OBS Series presses When assembly torques greater than can be tolerated by Grade 5 hardware are required Grade 8 fasteners are...

Страница 17: ...his is required in order to make certain that all four 4 press feet are bearing evenly to avoid twisting the frame 2 Make certain the area of the foundation slab on which the press is to be mounted is...

Страница 18: ...g Hex Head Cap Screws and flat washers DRIVE V BELT INSTALLATION The drive v belts transmit energy from the main drive motor to the press flywheel Install the drive v belts fol lowing procedure outlin...

Страница 19: ...so if the press is equipped with an Eddy Current Variable Speed Drive the coupling control leads must be connect ed before flywheel rotation can be checked Refer to Flywheel Rotation section page C 9...

Страница 20: ...present or is present but erratic 1 Check for loose or broken wires attached to the cur rent transformers 2 Check the current transformers for possible dam age open or shorted windings 3 If the power...

Страница 21: ...is position the reading is obtained from the first three digits In the 0 2000 position the digit on the right is a fixed 0 which will require speed changed in increments of 10 S P M before the display...

Страница 22: ...of flywheel rotation but DO NOT CYCLE THE SLIDE NOTE Lube reservoir must be filled the lube system must be operational and the air supplied to the press must be clean dry and of sufficient vol ume for...

Страница 23: ...inster Model 101 OBI Series presses are inclinable Flywheel presses may be inclined to one of four posi tions 0o vertical 10o 20o or 30o Geared presses may be inclined to one of three positions 0o ver...

Страница 24: ...d before stroking the press for the first time All tubing and related fittings in the lubrication system must be checked to make certain they are in good con dition Occasionally tubing is crushed or t...

Страница 25: ......

Страница 26: ...iness And Control D 5 Waste Disposal D 5 Changing Oil In The Lube System D 5 To Change Oil In The Lube System D 5 Lube System Oil Filter D 6 To Replace The Lube Unit 25 Micron Oil Filter D 6 Lube Dist...

Страница 27: ...lly are included in the Press Inspection Check List Maintenance Record in Section H Lubrication system components are included in the comprehensive press inspection check list so that they may be conv...

Страница 28: ...the top of the cylinder with Minster Lubricant No 1 See Figure 2D 3 Pour one half pint 0 24 liters into the slide ball box See Figure 2D 4 Fill clutch brake air line lubricator and slide adjust motor...

Страница 29: ...ress Normal operating counterbalance pressure is 35 to 45 psi 2 4 to 3 1 Bar 12 Make certain oil is dripping from the gibs 13 Check the entire recirculating lubrication system for leaks Also check for...

Страница 30: ...ties unless only approved lubricants are used in our presses and auxiliary equipment The lubricants must be periodically drained at recom mended intervals and replaced with new oil or a reconditioning...

Страница 31: ...nd sealing surface of the new filter Install the new filter and tighten it securely by hand 7 After new filter element is installed restore electri cal power to the press and start the main drive moto...

Страница 32: ...EVICE To Check The Flow Switch To check flow switch for proper operation perform the following test 1 Turn OFF power to press 2 Disconnect the two 2 flow switch leads from the press electrical system...

Страница 33: ...E mode and slide positioned at top of stroke start the lube pump motor Then check for presence of 110 V A C between terminal A1 and press ground See Figure 6D Results required 110 V A C should be pres...

Страница 34: ...accordance the manufacturer s recommendations 9 Rotor Seal Lubricate every three 3 months with an approved grease lubricant meeting the specifications of Minster Lubricant No 2 Refer to General Lubri...

Страница 35: ...D 10 11 3 2 4 8 12 13 9 1 LUBRICATION AREAS Refer to Summary of Lubrication Areas on page D 9 for lubrication instructions 7 7 14...

Страница 36: ...Air Pressure Adjustments E 8 Determining Die Weight E 8 Alternate Methods Of Air Pressure Adjustment E 8 Balancing Slide And Die Weight E 8 Percent Motor Load E 8 Effects Of Improper Pressure E 9 Ser...

Страница 37: ...eone is working on the press Some sample WARNING TAGS are shown in Figure 1E LOCKABLE SWITCHES VALVES During service procedures it is sometimes necessary to shut off pneumatic or electrical power to p...

Страница 38: ...g pneumatic equipment such as piping pressure regulators pres sure switches varies with the type and number of basic air components installed by Minster and may include optional items needed for the o...

Страница 39: ...To adjust the air pres sure turn the regulator handle until the desired pres sure is indicated on the associated air pressure gauge Turn the regulator handle clockwise to increase coun terclockwise t...

Страница 40: ...ricator is supplied if the press is equipped with motorized slide adjustment A mist of rust inhibited light turbine oil should be carried by the flow of air into the solenoid valve and slide adjust mo...

Страница 41: ...he correct interval the drip rate should be adjusted as outlined in Steps 7 thru 11 7 Stop the main drive motor and place the Stroking Selector Switch in the OFF position Make certain that the flywhee...

Страница 42: ...es As the piston travels up in the stroke the volume increases thus decreasing pressure allowing lubrication of the bear ings to occur The counterbalance system assists in the following Maintains and...

Страница 43: ...gth x width x height in inches of the upper die and divide by 4 Dividing by 4 is the same as mul tiplying by 0 25 Approx 0 283 LBS in3 minus the holes Alternate Methods of Air Pressure Adjustment Bala...

Страница 44: ...er month At the same time check alignment of the cylinder with slide A monthly check should be made of lubrication lines and associ ated fittings connected to the counterbalance Make certain that they...

Страница 45: ...alant to the air cylinder head mating surface and install the cylinder on the air cylinder head Wipe away any excess sealant 18 Reinstall the air cylinder cover on cylinder and secure with four 4 375...

Страница 46: ...ial is fastened to the brake piston with a single 250 20 x 500 long Socket Low Head Cap Screw NOTE If friction material is replaced use a new screw and apply several drops of Loctite Adhesive Grade 24...

Страница 47: ...stopped turning completely Attach a WARNING sign to the press controls to advise other personnel that the press is currently being serviced 4 Remove the cylinder stop from lower cylinder See Figure 9...

Страница 48: ...d 16 Reconnect pipe unions in the air supply lines that feed and are directly attached to the die cushion and air cylinder Apply Loctite Hydraulic Sealant H S No 569 Brown Liquid to the threads of the...

Страница 49: ...bottoms out in lower cylinder being careful not to damage the seal 13 Place a new gasket on the lower cylinder then install the bottom plate Secure the bottom plate to the lower cylinder with twelve...

Страница 50: ...and allows air to escape NOTE A spent fusible plug is not repairable and must be replaced with an identical plug DRAIN COCKS Ref Figure 11 E Drain cocks are used for draining moisture from the air op...

Страница 51: ......

Страница 52: ...Calibration Of The Shutheight Indicator F 5 To Check Calibration Of The Shutheight Indicator F 6 To Calibrate The Shutheight Indicator F 6 Connection Cap Installation F 6 Slide Ball Box F 7 To Check S...

Страница 53: ...de surfaces of the slide Properly adjusted gibs are an important factor in main taining parallelism between the slide face and top of press bed or bolster Loose gibs will cause unsatisfac tory stampin...

Страница 54: ...relation to the press bed It is most important that the slide face be par allel with the top surface of the bed or bolster because parallelism affects die alignment and quality of the work produced A...

Страница 55: ...ed return the press to the full verti cal position 2 Remove dies or tooling from the press 3 Turn ON the air supply to the press Charge the counterbalance cylinder if applicable with air pres sure tha...

Страница 56: ...he last 2 00 of travel WARNING MAKE CERTAIN THAT ALL PERSONS AVOID ANY PINCHING POINTS ASSOCIATED WITH THE OPER ATION OF THE PRESS AND OR ITS AUXILIARY EQUIPMENT 14 Stop the main drive motor Place the...

Страница 57: ...Applied jack pressure should never exceed 5 percent of press rated tonnage 8 Using the inside micrometer or other precision mea suring instrument measure the exact distance between the slide face and...

Страница 58: ...Stroking Selector Switch in the INCH position Then position the slide at Bottom Dead Center BDC of the stroke WARNING MAKE CERTAIN THAT ALL PERSONS ARE CLEAR OF ANY PINCH POINTS ASSOCIATED WITH THE OP...

Страница 59: ...n screw clamp plug and turning the connection screw in through one full rev olution If excessive force is required to turn the screw loosen the set screw and back off the adjust ing nut a small amount...

Страница 60: ...cam knockout arrangement is also available as an option This mechanism however requires a special slide and is available only when ordered on a new press or by replacing the complete slide assembly A...

Страница 61: ...Clean the slide face and the top surface of the bed or bolster 7 Insert a pry bar between the slide and frame Using the pry bar carefully apply pressure at the center of the slide in order to force t...

Страница 62: ...due to usage Set gibs as explained on page F 2 2 Improper setting of gibs Set gibs as explained on page F 2 3 Gibs damaged probably due to lack of oil Repair or replace gib and wear plate if necessar...

Страница 63: ......

Страница 64: ...Stuck On Bottom Condition G 2 Using The Optional Clutch Bumping Arrangement To Free A Stuck on Bottom Press Flywheel Press Only G 2 Total Bearing Clearance G 3 To Check Total Bearing Clearance G 3 Ind...

Страница 65: ...n adjust the clutch air pressure regulator to apply full line air pressure to the clutch 4 Set the SPEED SLOW FAST speed control if applicable to maximum speed 5 Place the POWER OFF ON BAR Selector Sw...

Страница 66: ...he INCH position Then position the slide at Bottom Dead Center BDC of the stroke WARNING MAKE CERTAIN THAT ALL PERSONS AVOID ANY PINCHING POINTS ASSOCIATED WITH THE OPER ATION OF THE PRESS AND OR ITS...

Страница 67: ...D AND THAT THE POWER HAS BEEN DISCONNECTED FROM THE DRIVE MOTOR BEFORE REMOVING DIES 2 Clean the slide face and the top surface of the bed or bolster 3 Place the POWER OFF ON BAR Selector Switch in th...

Страница 68: ...s frame and indi cate to the crankshaft Make certain the indicator is placed on the flywheel or main gear side of the press See Figure 1G Set the indicator dial to 0 reading 11 Energize the hydraulic...

Страница 69: ...es reveals the need to replace the main or connection bushings it is most important that the recommended fitting practice be observed These bushings are split and must be pre loaded by squeezing them...

Страница 70: ...SECTION H This Section Contains The Following Page Press Application H 2 Tonnage H 2 Tonnage Stroke Relationship H 3 Press Drives H 4 Punch Speeds H 8 Energy Capacity H 8 H 1...

Страница 71: ...ably one of the least understood The amount of direct tonnage that a mechanical press is able to exert is at minimum near mid stroke however it increases progressively from that point to its maximum r...

Страница 72: ...e at all Assuming that a torque input of 600 inch tons is applied to the shaft which has a crank throw of 6 inch es a force of 100 tons would be delivered by the slide at that point To illustrate how...

Страница 73: ...as the flywheel located directly on the crankshaft is called a flywheel type or non geared press In presses of this type flywheel energy which has been spent during each stroke should be recov ered du...

Страница 74: ...30 25 20 15 10 5 0 25 0 50 0 75 1 00 1 25 1 50 1 75 2 00 2 Stroke 3 Stroke 4 Stroke OBI 5 Flywheel Distance off Bottom vs Tonnage Available Distance off Bottom inches Tonnage Available U S Tons 0 00...

Страница 75: ...10 0 25 0 50 0 75 1 00 1 25 1 50 1 75 2 00 2 25 2 50 2 75 3 00 3 Stroke 4 Stroke 5 Stroke 6 Stroke 7 Stroke OBI 7 Flywheel Distance off Bottom vs Tonnage Available Distance off Bottom inches Tonnage A...

Страница 76: ...50 45 40 35 30 25 20 0 50 1 00 1 50 2 00 2 50 3 00 3 50 4 Stroke 5 Stroke 6 Stroke 7 Stroke OBI 7 Geared Distance off Bottom vs Tonnage Available Distance off Bottom inches Tonnage Available U S Tons...

Страница 77: ...able for work Energy is supplied by the main drive motor and stored as flywheel energy by rotating the fly wheel mass through a predetermined speed range It should be pointed out that not all of the e...

Страница 78: ...t Maintenance Record I 4 Mechanical Press Parts I 4 Weekly Checks I 4 Monthly Checks I 5 Semi Annual Checks I 5 Pneumatic Components I 7 Weekly Checks I 7 Monthly Checks I 7 Electrical Equipment I 9 W...

Страница 79: ...ed or replaced after every 1300 hours of operation and critical press parts inspected for cracks worn or broken sections Parts needing replacement should be ordered and time to perform repairs should...

Страница 80: ...pecific press from its manufacturing Bill Of Material This type of list has proven to be more valu able than placing a generalized list in the manual because subsequent design improvements specifica t...

Страница 81: ...ments of die or dies to be installed Do not exceed tonnage capacity of press If dies are set test press to determine if it is overloaded Do not operate press above maximum rated tonnage I 4 MINSTER Pr...

Страница 82: ...attachment pins for loose or broken parts Check motor sheave for looseness on motor shaft Check alignment of motor sheave with flywheel sheave Check motor sheave and flywheel for cracks wear and rough...

Страница 83: ...ss of ball box adjustment set screw NOTE Checking procedure explained in manual Check frame for cracked or broken sections Check for loose brackets or components attached to the frame Check for uneven...

Страница 84: ...With air pressure turned on turn regulator adjustment knob clockwise and note whether associated gauge reading increases Then turn adjustment screw counterclockwise and actuate the related component...

Страница 85: ...I 8 COMMENTS CORRECTIVE STEPS TAKEN Inspected By Press approved for operation Press NOT approved for operation...

Страница 86: ...is being used where necessary and that it is func tioning properly Check all point of operation guards to make certain they are in place and secure Make certain that all point of operation guards are...

Страница 87: ...I 10 COMMENTS CORRECTIVE STEPS TAKEN Inspected By Press approved for operation Press NOT approved for operation...

Страница 88: ...ter pump is stopped before adding oil Never permit oil level to fall below 2 00 from the bottom of the reservoir while press in is operation Quarterly Checks Lubricate as necessary See instructions in...

Страница 89: ...I 12 COMMENTS CORRECTIVE STEPS TAKEN Inspected By Press approved for operation Press NOT approved for operation...

Страница 90: ...ADDITIONAL COMMENTS I 13...

Страница 91: ...MMC0208 MINSTER The Minster Machine Company Minster Ohio 45865 Phone 419 628 2331 Fax 419 628 3517 Distributors strategically located throughout the world...

Страница 92: ...MMC0208 MINSTER The Minster Machine Company Minster Ohio 45865 Phone 419 628 2331 Fax 419 628 3517 Distributors strategically located throughout the world...

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