800.253.0820
3977 Emerald Dr., Kalamazoo, MI 49001
KC Series Multisize Collets
Untitled Document

Advantages of the Pratt Burnerd Multisize Collets

WIDE RANGE CAPACITY
Each multisize collet has a gripping
range of .125" with an extended
range of .010" above and below
each nominal size for a total range
of .145" per collet.

ADAPTABILITY
Fractional, decimal, metric and
non-standard bar sizes are all accommodated
as the collet range is
stepless. The collets will accept
round and hexagonal bars.

UNEQUALLED ACCURACY
Each collet is inspected to .0005
maximum eccentricity at the nose of
the collet.

NO DISTORTION
Geometrically designed. Ensures
freedom from collet distortion and
provides constant parallel grip
throughout the gripping range with
even wear and long life.

ALL STEEL COLLETS
Collet blades are all hardened and
ground.

INTERCHANGEABILITY
Multisize collets are interchangeable
between the various types of Pratt
Burnerd collet chucks.

MULTISIZE COLLETS
Multisize collets are available with
smooth blades or serrated blades
for gripping black or scaly type material.

 

Table Test

Use with chucks prefixed by No. KC-15KC-25
Capacity Collets Collet Numbers Collet Numbers
1/16 - 3/16EC2-
 3150-30200 
1/8 - 1/4EC3-
 3150-30300 
1/4 - 3/8EC4-
 3150-30400 
3/8 - 1/2EC5-
 3150-30500 
1/2 - 5/8EC6EE6
 3150-306003150-50600
5/8 - 3/4EC7EE7
 3150-307003150-50700
3/4 - 7/8EC8EE8
 3150-308003150-50800
7/8 - 1EC9EE9
 3150-309003150-50900
1 - 1-1/8EC10EE10
 3150-310003150-51000
1-1/8 - 1-1/4ED11EE11
 3150-311003150-51100
1-1/4 - 1-3/8EC12*EE12
 3150-312003150-51200
1-3/8 - 1-1/2EC13*EE13
 3150-313003150-51300
1-1/2 - 1-5/8-EE14
  3150-51400
1-5/8 - 1-3/4-EE15
  3150-51500
1-3/4 - 1-7/8-EE16
  3150-51600
1-7/8 - 2-EE1
  3150-51700
2 - 2-1/8-EE18
  3150-51800
2-1/8 - 2-1/4-EE19
  3150-51900
2-1/4 - 2-3/8-EE20
  3150-52000
2-3/8 - 2-1/2-EE21
  3150-52100
Complete SetEC14EE22
 3160-313003160-52100
*For round stock only.