LEADERMAC

LEA-TECH Type 50 Precision Knife & Surface Grinders

Video

Machine Information

Features

LEA TECH Type 50
Precision Grinding Machine Complete  – Grinding Lengths

  • GL 15 – 60” ( 1525 mm) Grinding Length/Magnetic Bed Length 
  • GL 21 – 83” ( 2110 mm) Grinding Length/Magnetic Bed Length
  • GL 25 – 98” (2500 mm) Grinding Length/Magnetic Bed Length
  • GL 31 – 122” ( 3100 MM) Grinding Length/Magnetic Bed Length
  • GL 36 – 144” ( 3660 mm) Grinding Length/Magnetic Bed Length

Main Machine Base:

  • Box/Cellular Construction – extremely Heavy throughout
  • Entire Base is Stress Relieved
  • Interior of Base is very open for easy access
    • Easily Aligned and Leveled

Machine Ways:

  • The LEA-TECH Carriage Design allows Easy Access for Operation and Wheel Changing and  Adjustment from the front of the machine
  •  NEW:Machine Ways are Precision Machined prior to installation of Hardened Precision Ground Way Strips(Steel Bands) on the Tops of the ways as well as the rear Side Guiding Ways.
  • The Carriage Rides on Hardened Precision Ground Steel Bands(Wear Strips) along the length of the base on the tops and sides of ways which can be easily and inexpensively replaced and after many years  of operation
  • Adjustable Way Wipers also included.  

 

Grinding Head Carriage

  • The Carriage is Wide with Maximum Distance between bearings
  • The Wide Carriage Design also provides Even Load Distribution and Maximum Rigidity.
  • The Grinding Head Carriage is carried on 4 Horizontal Re-adjustable with race roller bearings
  • 4 other bearings are used for Carriage Side Alignment.
Details

PRIMARY GRINDING HEAD

  • Precision Grinding Motor – 15 HP – 1800 RPMDynamically Balanced & HD Manufactured
  • Extra heavy duty, high precision Grinding Head Motor Spindle,
  • Motor is Totally Enclosed, sealed and with HD windings
  • Head is Slewable (Tiltable) for Concave & Surface Grinding.
  • Head is Cross-Adjustable for wheel & precision hollow positioning
  • Ø 10” Diameter Grinding Wheel & Backing Plate (Can use 10” Segmental Head)  

Downfeed & Control Of Grinding Head

  • The Vertical Feed of the Grinding Head is through the use of a Servo Motor which is directly coupled to a Vertical Oversized Ball Screw(with Special Nut Assembly),
  • The guide ways, spindle gear and ball screws are mounted under covers, additionally protected with wipers and the maximum up/down movement pre-tested with limit switches.
  • Power Up & Down to the grinding head with push-button control (greatly reduces setup time) as well as handwheel infinitely variable speed up & down
  • Automatic Electronic Down-feed System enables the operator to preset the machine with a Set Finish Point    

Note:  With this the grinder man can do other jobs with the machine automatically grinding and then with auto shutdown at the end of the preset program. 

GRINDING PROGRAMS

  • Grinding Cycle
  • Roughing
  • Finishing – Sparkout
  • And Auto Return to start position with machine shut down with completion of grind.
  • Automatic Down feed is Infinitely Variable

LONGITUDINAL CARRIAGE FEED SYSTEM

  • Grinding Head Carriage Feed:  via Servo Motor which is ideal for .75”/min to 100fpm feed speeds reciprocal grinding.  Ideal for all types of Steel as well as Carbide Grinding
  • The Feed System utilizes a Rack and Pinion Drive System (Helical / Angle Cut)– for assured continued smooth operation (even as wear develops)
  • The Helical Pinion is belt driven
  • Grinding Length can be easily varied by movement of length stops
  • Longitudinal Travel can be easily started or stopped
  • The Coolant is pumped by a powerful pump from the Separate Coolant Tank, which sits at the rear of the grinder.  The coolant travels to the grinding head carriage and then the flow is split.  One Outlet Goes Through the Hollow Spindle of the Main Motor to the end of the shaft where it is deflected out to the inner side of the grinding wheel. The Other Outlet goes to a nozzle directed at the outer edge of the grinding head being used and material being ground.
  • The Coolant then proceeds with the swarf to the left hand end of the machine where it flows out into the Added Option Magnetic Roller Coolant Cleaner on the separate coolant tank
  • There is a Wash down Hose supplied

COOLANT SYSTEM

  •  The Coolant is pumped by a powerful pump from the Separate Coolant Tank, which sits at the rear of the grinder.  The coolant travels to the grinding head carriage and then the flow is split.  One Outlet Goes Through the Hollow Spindle of the Main Motor to the end of the shaft where it is deflected out to the inner side of the grinding wheel. The Other Outlet goes to a nozzle directed at the outer edge of the grinding head being used and material being ground.
  • The Coolant then proceeds with the swarf to the left hand end of the machine where it flows out into the Added Option Magnetic Roller Coolant Cleaner on the separate coolant tank
  • There is a Wash down Hose supplied

Electrical Equipment

  • NEW – The grinder is now Supplied with Standard Button controls and a Touch Screen Carriage mounted on Top of the carriage for easiest operation
  • There is also Remote Control furnished Mounted on the Grinding Carriage
  • Y-Delta Starter for Main Grinding Head (Soft Start & low amperage start –
  • Ammeter for Main Grinding Head.
  • Safety Systems included – Feed will not start unless Magnetic Bed (if supplied) is magnetized;
  •  Electrical Panel completely Pre-wired and at left (or right as desired) end of machine for easy access.  Supplied with starting, switching and overload controls to U.L. and C.S.A. Standards

MAGNETIC CLAMPING TABLE

  • 6 inch (150 mm) Wide Magnetic Bed
  • Variable Magnetism Strength & Variable Speed Magnetizing
  • Patented Sinusoidal Pole – Pitch for maximum Holding Power.
  • Large turning shaft with H.D. Pinion and Gear Turning and large Micrometer Dial
  • Special Quick Set-up Knife Aligning Bar

Note:   Magnetic Bed Plates can be easily Reground.

Specifications
Grinding Width (Max.) 8”
Grinding Wheel Max. Clearance 4.7”
Magnetic Table (Bed) 6” Wide swivelable with Heavy Pivot
Shaft
Main Grinding Motor 15 HP (1800 RPM)
Grinding Wheel Size 10” North American Style (Nut Inserted)
Feed Speed of Grinding Carriage .75”/min to 98 FPM
Down Feed of Grinding Motor Full automatic, adjustable .00008” up to
.008”/stroke
Coolant Tank Size (Approx.) 60 gals.
Output of Coolant Pump 17 gal/min. (for main head)
Wash down Hose – Output 17 gal/min.

Other Standard Equipment:

  • Electrics are 230/460 or 575 volts 3 Phase 60 Cycles to UL/CSA Standards
  • Leveling bolts and leveling plates are furnished
  • Machine Color – Two Tones (Blue and Light Grey RAL 7035/5000) – Special colors on request.
  • Options as listed (if you want any options not listed, please inquire about these).