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GRINDERS, INTERNAL (Also See CNC, Grinders, Internal)

Cincinnati Heald #273A, 273-A Size-Matic, 17.5" slide, coarse-fine clnt, 1979, #42866

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General Specifications


Manufacturer: cincinnati
Model: 273A
Stock #: 42866
Price: Request a Price

Dealer Information
Liberty Machinery Co logo
Liberty Machinery Co
111 Schelter Rd
Lincolnshire, IL 60069
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Contact: Peter Sonneborn
Tel: 847-276-2761
Fax: 847-276-2762
Email: sales@libertymachinery.com
  
Gold Level Dealer Since 1996
Website: www.libertymachinery.com

View our Equipment Listings

Detailed Product Description


New - 1979
Serial No. 46231

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" - .0005" on Dia.
(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
Machine dimensions - approximate.................96"(L-R) x 64"(F-B) x 75"(H)
Weight - approximate...............................................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
Heald red head grinding spindle model 409-250-200 (14000 RPM)

Swing down single point dresser
Coolant system

*Preliminary specifications subject to verification