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Heald 273A Internal Universal Grinder | 24″ Swing – #45974

Liberty Machine # 45974 Category Make

Heald 273A Internal Universal Grinder

Serial No.41529
New – 1978 Rebuilt and Retrofit by Service Network, Inc. (1993)
This is a high precision versatile machine for grinding straight or taperbores, straight or taper O.D.’s and Flat, Convex or Concave Surfaces.
Heald 273A internal universal grinder 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.

Heald 273A internal universal grinder EQUIPPED WITH:
26,000 RPM Heald “Red-Head” ID Spindle
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

Grinding machine tools are essential equipment in the manufacturing industry for precision grinding and finishing operations. These machines use abrasive wheels or belts to remove material from a workpiece, achieving tight tolerances and desired surface finishes. Grinding machine tools like the Heald 273A internal universal grinder come in various types, including surface grinders, cylindrical grinders, and tool and cutter grinders. They are used for tasks such as surface grinding, cylindrical grinding, and sharpening cutting tools. Grinding machine tools are critical for achieving precise dimensions, improving part quality, and enhancing overall productivity in metalworking processes.

To find out more about grinders click HERE and HERE.

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