LIBERTY III

UNIVERSAL CNC ID/OD GRINDER

The Liberty III Universal Grinder is the next generation in our established line of Liberty CNC OD/ID grinders. The Liberty III was designed and built with a focus on heavy duty construction, higher horse power, and up to three spindle mounting locations. The CNC controlled wheel head with the large variety of spindle options available make the Liberty III a true universal grinder that can take on the most challenging grinding applications.

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Machines must pass rigorous test grinding and verification to .00005” (.00127mm) or less

GENERAL SPECIFICATIONS
OVERALL DIMENSIONS (WXDXH)	120 IN X 130 IN X 80 IN
* HEIGHT WITH MIST COLLECTOR OPTION	105 IN (2670 MM)
MACHINE WEIGHT (NET)	15000 LBS (33069.3 KG)
MAX PART DIAMETER	14 IN (355.6 MM)
DISTANCE BETWEEN CENTERS	10 IN (254 MM)
WORKTABLE SIZE	7.25 IN X 38 IN (184.15 MM X 965.2 MM)

POWER
POWER REQUIREMENT	208, 230, OR 480 VAC – 60 HZ
POWER CONSUMPTION	39.5 KVA
MAX. CURRENT	100 A

CNC CONTROL / PROGRAMMING
SIEMENS 840D SOLUTION LINE
INPUT FORMAT	ETHERNET OR USB
POSITION COMMAND	INCREMENTAL AND ABSOLUTE
PROGRAMMING FORMAT	INCH OR METRIC
MINIMUM PROGRAM INCREMENT	0.00001 IN (0.0001 MM)
HANDWHEEL CONTROL	REMOTE HANDHELD PENDANT

TABLE AXIS
SERVO MOTOR DRIVEN BALLSCREW
HAND SCRAPED TURCITE COATED VEE & FLAT WAY SYSTEM
CLOSED LOOP HEIDENHAIN ABSOLUTE LINEAR GLASS SCALE FEEDBACK
SERVO POWER RATING	2.28 HP
TOTAL TRAVEL	13 IN

CROSSFEED AXIS
SERVO MOTOR DRIVEN BALLSCREW
PRECISION ROLLING ELEMENT LINEAR MOTION BEARING
CLOSED LOOP POSITIONING WITH HEIDENHAIN GLASS SCALE FEEDBACK
SERVO POWER RATING	2.28 HP
TOTAL TRAVEL	13 IN

WORKHEAD SPINDLE
SPEED	0-1000 RPM
SPINDLE NOSE	A2-5 AND 5C COLLETS
TORQUE RATING	40 FT LBS NM (55 NM )
MANUALLY PIVOTING WORKHEAD (B-AXIS) – ACCURACY 0.0005°
SUPER PRECISION 15° ANGULAR CONTACT BEARINGS

GRINDING SPINDLES
SPINDLE NOSE (T.I.R.)	0.00005 IN (0.0013 MM)

SPINDLE 1 - (ID or OD)

SPINDLE 2 - (ID OR OD)

SPINDLE 3 - (ID ONLY)

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THE BENEFITS BUILT INTO EVERY ONE OF OUR
CNC GRINDING MACHINES.

Hand Scraped Ways
The human touch in a high precision machine. Hand scraping provides a more accurate surface for more accurate part production.

Cast Iron Bases

Preprogrammed Cycles