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New 12" x 24" Acra Automatic 3 Axis Hydraulic Super Precision Surface Grinder

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$36,500.00
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SKU:
OMASG1224AHD
Condition:
New
Weight:
5,400.00 LBS

ACRA’S new 1224AHD Automatic 3 Axis High Precision Surface Grinder is a distinction in precision technology that is built to fulfill the idea of:

  • High accuracy
  • Long accuracy life
  • Superior surface roughness
  • High productivity
  • Easy operation
  • Heavy duty grinding
  • Fully-support of each slide way
  • Rigidity and damping effect of each main part such as base, column, saddle, spindle & grinding head, etc.
  • Dust-free protection of all slide ways as well as spindle unit.
  • Ergonomic engineering of each hand wheel and control lever.

Rigid Construction

  • Heavy, extra rigid castings are used for the main parts to assure accuracy at full capacity of grinder.

Built for Precision

  • Extra-wide table support provides superior rigidity and accuracy for long work pieces. X & Z slide ways are coated with “Turcite B” and precision hand scraped. The wheel spindle is supported at each end by duplex ball bearings which are sealed to help extend life of each bearing. Entire spindle unit is replaceable.

Advanced Hydraulic Circuit Design

  • Improved hydraulic circuit provides vibration-free reversing motion of table. Easily handle the table by the hand wheel when table speed is switched off.

Automatic Lubrication

  • Constant lubrication oil is pumped to every part of the slide way whenever the machine is powered on. A flashing light will be actuated when the lubricating function is not working.

Precision Down Feed

  • A precision ground, vertical lead screw and transmission gears provide accurate down feed.

Completed Dust Protection

  • All slide ways and the electrical cabinet are protected from dust and water. 

Table Hydraulic Feed

  • Speed ranges from 1 m/min to 25 m/min (3 FPM-83 FPM).

Automatic Cross Feed

  • A combination of precision ball screws and a timing belt drive motor provides quick and smooth cross feed operation.
  • Proximity switches are installed inside
  • Stroke is adjustable by a push button
  • Box-type column provides excellent damping effect
  • Lubrication oil tank can be taken out easily for cleaning
  • Cartridge spindle uses precision bearings class ABEC 7 (P4)
  • Enlarged double vee and extra-long slide way on the base

Completed Dust Protection

  • All slide ways and the electrical cabinet are protected from dust and water
  • Extra-strong saddle and slide way for greater support
  • Highly efficient variable speed pump is used for saving energy
  • A separated unit from the machine body for vibration-free and easy maintenance.
  • Hardened & ground vertical lead screw and transmission gears.

Specifications

Capacity

  • Maximum Grinding (Length x Width): 27.5” x 12”
  • Maximum Distance from Tabletop to Spindle: 26.9″

Table

  • Table Surface (Length x Width) Inch: 24” x 12”
  • Center Height: 26.9″
  • Maximum Longitudinal Travel: 29.9”
  • Maximum Cross Travel: 14.1”
  • T -slot Width (No. x Width): 3 x 0.67”

Longitudinal Movement of Table

  • Hydraulic Feed Ft. (m): 3.28’ ~ 82”
  • Hand Feed per Revolution: 2.36”

Cross Movement of Saddle

  • Intermittent Feed: 0.04” – 0.59”/min
  • Continuous Feed: 47.2”/min
  • Hand Feed per Revolution: 0.2”
  • Graduation of Hand Wheel: 0.001”

Vertical Movement of Wheel Head

  • Hand Feed per Revolution: 0.02”
  • Graduation of Handwheel: 0.0001”

Feed

  • Micro Feed (OPTION): 0.0001″
  • Rapid Feed (OPTION): 8.6”/min

Vertical Automatic Down Feed

  • Feed Per Time: 0.0001″~0.0015″
  • Total Feed: 1.95″
  • Spark-Out: 0~9 Times

Spindle

  • Spindle Motor Horsepower: 5 HP/4P
  • Spindle Speed (60Hz): 1,750 RPM
  • Grinding Wheel (Diameter x Width x Bore): 14″x 2″ x 5″

Motors

  • Hydraulic Motor: 2 HP/6P
  • Vertical Feed Motor: 190W.
  • Cross Feed Motor: 150W.
  • Voltage: 230 or 460V AC~3 PH

Standard Equipment

  • Grinding Wheel
  • Diamond Wheel Dresser
  • Kanetsu Electric Magnetic Chuck
  • Wheel Balancing Arbor
  • Leveling Screws & Plates
  • Automatic Lubrication
  • Wheel Flange
  • Halogen Light
  • Table Hydraulic Feed
  • Chuck Controller
  • Parallel Dresser
  • Coolant System
  • Flange Extractor
  • Operation Manual, Electrical Diagrams
  • Toolbox
One (1) Year MFG Parts Warranty