Heald 273A Size-Matic Internal Grinding Machine | 24" Swing - #45974

Liberty Machine # 45974 Category Make

Serial No.41529
New - 1978 Rebuilt and Retrofit by Service Network, Inc. (1993)

This is a high precision versatile machine for grinding straight or taper

bores, straight or taper O.D.'s and Flat, Convex or Concave Surfaces.

SPECIFICATIONS:
Maximum Swing Over Table Extension....................................24-1/2"
(Workhead parallel to table without chuck guard,
permits no workslide travel, and limits table travel)
Swing w/Workhead Swiveled +/-90 Degrees...................................16"
Swing Inside Standard Chuck Guard.........................................20"
Angular Adjustment of Workhead.....................................90 Degrees
Workhead Positioning Slide Travel.....................................17-1/2"
Table Travel - Maximum....................................................20"
Grinding Stroke - Maximum.................................................16"
Wheelhead Cross Slide Travel...........................................1-1/2"
Center of Workhead Spindle to Floor Distance.....................0 - 29-1/16"
(Workhead Flange to Edge Wheelslide)
Table Speeds for Grinding .........................................0 - 18 FPM
Workhead Speeds - Reversible & Variable...........................0 - 500 RPM
Rapid Traverse of Table................................................18 FPM
One Turn of Cross Feed Handwheel...........................0.050" on Diameter
Cross Feed Increments...........................0.0001" - 0.0005" on Diameter
(One or Both Ends of Table Stroke)
Stroke - Minimum.......................................................0.125"
One Turn of Workslide Handwheel........................................0.100"
One Turn of Table Handwheel............................................3-3/4"
Wheelhead Motor..........................................................5 HP
Electrics...............................................480V / 3 Phase / 60Hz
Approximate Dimensions...........................96"(L-R) x 64"(F-B) x 75"(H)
Approximate Weight.................................................7,500 Lbs.

EQUIPPED WITH:
Hydrostatic table ways
Feed box combines automatic & manual control for coarse and fine feed
Guarding and chute for coolant
Digital timer
Telemecanique (Squared) Altivar 16 Variable Frequency Drive (Workhead)
Swing down single point dresser
Coolant system

*Preliminary specifications subject to verification

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